gearing calculator

DSN_KLR650
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Norm Keller
Posts: 712
Joined: Thu Apr 01, 2004 7:48 am

gearing calculator

Post by Norm Keller » Tue Dec 30, 2014 12:21 am

#ygrps-yiv-1550487671 blockquote.ygrps-yiv-1550487671cite {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;} #ygrps-yiv-1550487671 blockquote.ygrps-yiv-1550487671cite2 {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;margin-top:3px;padding-top:0px;} #ygrps-yiv-1550487671 .ygrps-yiv-1550487671plain pre, #ygrps-yiv-1550487671 .ygrps-yiv-1550487671plain tt {font-family:monospace;font-size:100%;font-weight:normal;font-style:normal;} #ygrps-yiv-1550487671 a img {border:0px;}#ygrps-yiv-1550487671 {font-family:Tahoma;font-size:12pt;} #ygrps-yiv-1550487671 .ygrps-yiv-1550487671plain pre, #ygrps-yiv-1550487671 .ygrps-yiv-1550487671plain tt {font-family:Tahoma;font-size:12pt;} This gearing calculator might be handy:  http://www.gearingcommander.com/
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Norm Keller
Posts: 712
Joined: Thu Apr 01, 2004 7:48 am

motorcycle horsepower versus speed

Post by Norm Keller » Tue Dec 30, 2014 12:56 am

#ygrps-yiv-945476548 blockquote.ygrps-yiv-945476548cite {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;} #ygrps-yiv-945476548 blockquote.ygrps-yiv-945476548cite2 {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;margin-top:3px;padding-top:0px;} #ygrps-yiv-945476548 .ygrps-yiv-945476548plain pre, #ygrps-yiv-945476548 .ygrps-yiv-945476548plain tt {font-family:monospace;font-size:100%;font-weight:normal;font-style:normal;} #ygrps-yiv-945476548 a img {border:0px;}#ygrps-yiv-945476548 {font-family:Tahoma;font-size:12pt;} #ygrps-yiv-945476548 .ygrps-yiv-945476548plain pre, #ygrps-yiv-945476548 .ygrps-yiv-945476548plain tt {font-family:Tahoma;font-size:12pt;} A link was posted to FB showing a KLR maximum speed of 115 mph which is clearly very "optimistic": http://www.topspeed.com/motorcycles/motorcycle-reviews/kawasaki/2010-kawasaki-klr-650-ar72623.html   That brought up some "guesstimate" rules of thumb I use: Honda 50 - 5 hp- 50 mph Suzuki 80 - 7.3 hp- 62 mph Honda S90 - 8 hp- 65 mph Honda CB125 12.5 hp- 75 mph Honda CB160 16 hp- 85 mph Honda CB175 20 hp- 90 mph Suzuki X6 Hustler 29 hp- 100 mph KLR650 37 hp - 100 mph Norton 750 55 hp - 115 mph Kawasaki Z1 82 hp- 132 mph Honda VF1000 122 hp- 150 mph Kawasaki Ninja ZX11 145 hp - 175 mph Suzuki Hyabusa 173 hp- 194 mph   Anyone care to improve the list?
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Martin Earl
Posts: 231
Joined: Wed Nov 26, 2003 10:00 pm

motorcycle horsepower versus speed

Post by Martin Earl » Tue Dec 30, 2014 11:28 am

Sometime during 2004, many posted how fast the KLR was or wasn't.Stock OEM 15/43 yielded various claims. Mile would do 105mph, down hill, hunkered down on the tank.None of it was valid without using a GPS or measured mile/stopwatch.That 105mph/gauge was ~95mph GPS. I don't think I have been there since...maybe I should see if the installed 685 kit would make a difference. yawn. As I recall, changing the gearing to taller gears do not make it go faster, or if it did, not by much.The beast does not have the HP to overcome the exponential component of frontal plate drag, without significant faring(s) modification. Enter, Craig Vetter.http://thekneeslider.com/alcan-fairing-craig-vetters-latest-project/ Well, Just for musings--Once, I was doing an indicated 125mph into 40mph headwind. whoo hooo. And I didn't spend a dime to achieve this vaunted number. cough.I think I posted to this list as the 'World's fastest KLR", which of course was a spoof and clearly instrument error.Shortly after that, the speedo head locked up and twisted the speedo internal cable into two parts. shrug.I think the GPS was an indicated70ish, and the fuel economy was as a side note, I spent many dimes to replace the speedo head...IMO another very weak point in the Gen 1 KLR. I would imagine with the Free HP mod, = exhaust cam advanced one tooth, there may be a slight increase in MPH. Free HP mod and the 685 kit might just make it go slightly faster.With the work Craig 'Vetter' is doing on his KLR, there may be $1000's of dollars spent to obtain bragging rights of the worlds fastest KiLeRista. m1.
On Mon, Dec 29, 2014 at 11:56 PM, 'Norm Keller' normkel32@... [DSN_KLR650] DSN_KLR650@yahoogroups.com> wrote: A link was posted to FB showing a KLR maximum speed of 115 mph which is clearly very "optimistic": http://www.topspeed.com/motorcycles/motorcycle-reviews/kawasaki/2010-kawasaki-klr-650-ar72623.html That brought up some "guesstimate" rules of thumb I use: Honda 50 - 5 hp- 50 mph Suzuki 80 - 7.3 hp- 62 mph Honda S90 - 8 hp- 65 mph Honda CB125 12.5 hp- 75 mph Honda CB160 16 hp- 85 mph Honda CB175 20 hp- 90 mph Suzuki X6 Hustler 29 hp- 100 mph KLR650 37 hp - 100 mph Norton 750 55 hp - 115 mph Kawasaki Z1 82 hp- 132 mph Honda VF1000 122 hp- 150 mph Kawasaki Ninja ZX11 145 hp - 175 mph Suzuki Hyabusa 173 hp- 194 mph Anyone care to improve the list?
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Norm Keller
Posts: 712
Joined: Thu Apr 01, 2004 7:48 am

motorcycle horsepower versus speed

Post by Norm Keller » Tue Dec 30, 2014 11:54 am

#ygrps-yiv-1731568434 blockquote.ygrps-yiv-1731568434cite {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;} #ygrps-yiv-1731568434 blockquote.ygrps-yiv-1731568434cite2 {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;margin-top:3px;padding-top:0px;} #ygrps-yiv-1731568434 .ygrps-yiv-1731568434plain pre, #ygrps-yiv-1731568434 .ygrps-yiv-1731568434plain tt {font-family:monospace;font-size:100%;font-weight:normal;font-style:normal;} #ygrps-yiv-1731568434 a img {border:0px;}#ygrps-yiv-1731568434 {font-family:Tahoma;font-size:12pt;} #ygrps-yiv-1731568434 .ygrps-yiv-1731568434plain pre, #ygrps-yiv-1731568434 .ygrps-yiv-1731568434plain tt {font-family:Tahoma;font-size:12pt;} Great anecdotes, Martin.   I forgot to add to the horsepower versus speed that these are indicated speeds not real speeds.   ------ Original Message ------ From: "Martin Earl" To: "DSN KLR650" DSN_KLR650@yahoogroups.com>; "Norm Keller" Sent: 2014-12-30 9:28:52 AM Subject: Re: [DSN_KLR650] Motorcycle horsepower versus speed  
Sometime during 2004, many posted how fast the KLR was or wasn't. Stock OEM 15/43 yielded various claims.  Mile would do 105mph, down hill, hunkered down on the tank. None of it was valid without using a GPS or measured mile/stopwatch. That 105mph/gauge was ~95mph GPS.  I don't think I have been there since...maybe I should see if the installed 685 kit would make a difference. yawn.   As I recall, changing the gearing to taller gears do not make it go faster, or if it did, not by much. The beast does not have the HP to overcome the exponential component of frontal plate drag, without significant faring(s) modification. Enter, Craig Vetter. http://thekneeslider.com/alcan-fairing-craig-vetters-latest-project/ Well,  Just for musings-- Once, I was doing an indicated 125mph into 40mph headwind.  whoo hooo.  And I didn't spend a dime to achieve this vaunted number. cough. I think I posted to this list as the 'World's fastest KLR", which of course was a spoof and clearly instrument error. Shortly after that, the speedo head locked up and twisted the speedo internal cable into two parts. shrug. I think the GPS was an indicated70ish, and the fuel economy was as a side note, I spent many dimes to replace the speedo head...IMO another very weak point in the Gen 1 KLR. I would imagine with the Free HP mod, = exhaust cam advanced one tooth,  there may be a slight increase in MPH. Free HP mod and the 685 kit might just make it go slightly faster. With the work Craig 'Vetter' is doing on his KLR, there may be $1000's of dollars spent to obtain bragging rights of the worlds fastest KiLeRista. m1. On Mon, Dec 29, 2014 at 11:56 PM, 'Norm Keller' normkel32@... [DSN_KLR650] DSN_KLR650@yahoogroups.com> wrote: A link was posted to FB showing a KLR maximum speed of 115 mph which is clearly very "optimistic": http://www.topspeed.com/motorcycles/motorcycle-reviews/kawasaki/2010-kawasaki-klr-650-ar72623.html   That brought up some "guesstimate" rules of thumb I use: Honda 50 - 5 hp- 50 mph Suzuki 80 - 7.3 hp- 62 mph Honda S90 - 8 hp- 65 mph Honda CB125 12.5 hp- 75 mph Honda CB160 16 hp- 85 mph Honda CB175 20 hp- 90 mph Suzuki X6 Hustler 29 hp- 100 mph KLR650 37 hp - 100 mph Norton 750 55 hp - 115 mph Kawasaki Z1 82 hp- 132 mph Honda VF1000 122 hp- 150 mph Kawasaki Ninja ZX11 145 hp - 175 mph Suzuki Hyabusa 173 hp- 194 mph   Anyone care to improve the list?
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Jeff Saline
Posts: 2246
Joined: Fri Oct 10, 2003 6:02 pm

motorcycle horsepower versus speed

Post by Jeff Saline » Tue Dec 30, 2014 12:05 pm

#ygrps-yiv-959415015 .ygrps-yiv-959415015ygrp-photo-title { TEXT-ALIGN:center;WIDTH:75px;HEIGHT:15px;CLEAR:both;FONT-SIZE:smaller;OVERFLOW:hidden;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015ygrp-photo { BORDER-BOTTOM:black 1px solid;BORDER-LEFT:black 1px solid;BACKGROUND-COLOR:white;WIDTH:62px;BACKGROUND-REPEAT:no-repeat;BACKGROUND-POSITION:center 50%;HEIGHT:62px;BORDER-TOP:black 1px solid;BORDER-RIGHT:black 1px solid;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015photo-title A { TEXT-DECORATION:none;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015photo-title A:active { TEXT-DECORATION:none;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015photo-title A:hover { TEXT-DECORATION:none;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015photo-title A:visited { TEXT-DECORATION:none;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015attach-table DIV.ygrps-yiv-959415015attach-row { CLEAR:both;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015attach-table DIV.ygrps-yiv-959415015attach-row DIV { FLOAT:left;} #ygrps-yiv-959415015 P { PADDING-BOTTOM:3px;PADDING-LEFT:0px;PADDING-RIGHT:0px;CLEAR:both;OVERFLOW:hidden;PADDING-TOP:15px;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015ygrp-file { WIDTH:30px;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015attach-table DIV.ygrps-yiv-959415015attach-row DIV DIV A { TEXT-DECORATION:none;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015attach-table DIV.ygrps-yiv-959415015attach-row DIV DIV SPAN { FONT-WEIGHT:normal;} #ygrps-yiv-959415015 DIV.ygrps-yiv-959415015ygrp-file-title { FONT-WEIGHT:bold;} #ygrps-yiv-959415015 BLOCKQUOTE.ygrps-yiv-959415015cite { BORDER-LEFT:#cccccc 1px solid;PADDING-LEFT:10px;PADDING-RIGHT:0px;MARGIN-LEFT:5px;MARGIN-RIGHT:0px;} #ygrps-yiv-959415015 BLOCKQUOTE.ygrps-yiv-959415015cite2 { BORDER-LEFT:#cccccc 1px solid;MARGIN-TOP:3px;PADDING-LEFT:10px;PADDING-RIGHT:0px;MARGIN-LEFT:5px;MARGIN-RIGHT:0px;PADDING-TOP:0px;} #ygrps-yiv-959415015 .ygrps-yiv-959415015plain PRE { FONT-STYLE:normal;FONT-FAMILY:monospace;FONT-SIZE:100%;FONT-WEIGHT:normal;} #ygrps-yiv-959415015 .ygrps-yiv-959415015plain TT { FONT-STYLE:normal;FONT-FAMILY:monospace;FONT-SIZE:100%;FONT-WEIGHT:normal;} #ygrps-yiv-959415015 A IMG { BORDER-BOTTOM:0px;BORDER-LEFT:0px;BORDER-TOP:0px;BORDER-RIGHT:0px;} #ygrps-yiv-959415015 { FONT-FAMILY:Tahoma;FONT-SIZE:12pt;} #ygrps-yiv-959415015 .ygrps-yiv-959415015plain PRE { FONT-FAMILY:Tahoma;FONT-SIZE:12pt;} #ygrps-yiv-959415015 .ygrps-yiv-959415015plain TT { FONT-FAMILY:Tahoma;FONT-SIZE:12pt;} On Tue, 30 Dec 2014 06:56:40 +0000 "'Norm Keller' normkel32@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes:   A link was posted to FB showing a KLR maximum speed of 115 mph which is clearly very "optimistic": http://www.topspeed.com/motorcycles/motorcycle-reviews/kawasaki/2010-kawasaki-klr-650-ar72623.html   That brought up some "guesstimate" rules of thumb I use: Honda 50 - 5 hp- 50 mph Suzuki 80 - 7.3 hp- 62 mph Honda S90 - 8 hp- 65 mph Honda CB125 12.5 hp- 75 mph Honda CB160 16 hp- 85 mph Honda CB175 20 hp- 90 mph Suzuki X6 Hustler 29 hp- 100 mph KLR650 37 hp - 100 mph Norton 750 55 hp - 115 mph Kawasaki Z1 82 hp- 132 mph Honda VF1000 122 hp- 150 mph Kawasaki Ninja ZX11 145 hp - 175 mph Suzuki Hyabusa 173 hp- 194 mph   Anyone care to improve the list? <><><><><><> <><><><><><>   Norm,   I don't know about an improvement but I'll add to it.   1979 BMW R100S European specs 70 hp - 120 mph indicated (converted from kph) when I chickened out and slowed.  I think it would have done close to 140 mph indicated.  I was in Germany on the autobahn.  I suppose that was probably closer to 108 mph actual and maybe it would have gone to 122-125 mph actual.   I had a 1982 BMW R100S that would have been rated 70 hp and fastest I took it was 105 mph indicated which was probably 97 mph actual.  That was on a deserted road in Oklahoma about 15 years ago.  It would have gone faster but I wouldn't.   Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . .     . . .     ____________________________________________________________ [b]Apple's Crazy New Gizmo[/b] Forget the iPhone 6. Next hit Apple product leaked. (see picture) fool.com
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Norm Keller
Posts: 712
Joined: Thu Apr 01, 2004 7:48 am

motorcycle horsepower versus speed

Post by Norm Keller » Tue Dec 30, 2014 12:54 pm

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On Tue, 30 Dec 2014 06:56:40 +0000 "'Norm Keller' normkel32@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes:   A link was posted to FB showing a KLR maximum speed of 115 mph which is clearly very "optimistic": http://www.topspeed.com/motorcycles/motorcycle-reviews/kawasaki/2010-kawasaki-klr-650-ar72623.html   That brought up some "guesstimate" rules of thumb I use: Honda 50 - 5 hp- 50 mph Suzuki 80 - 7.3 hp- 62 mph Honda S90 - 8 hp- 65 mph Honda CB125 12.5 hp- 75 mph Honda CB160 16 hp- 85 mph Honda CB175 20 hp- 90 mph Suzuki X6 Hustler 29 hp- 100 mph KLR650 37 hp - 100 mph Norton 750 55 hp - 115 mph Kawasaki Z1 82 hp- 132 mph Honda VF1000 122 hp- 150 mph Kawasaki Ninja ZX11 145 hp - 175 mph Suzuki Hyabusa 173 hp- 194 mph   Anyone care to improve the list? <><><><><><> <><><><><><>   Norm,   I don't know about an improvement but I'll add to it.   1979 BMW R100S European specs 70 hp - 120 mph indicated (converted from kph) when I chickened out and slowed.  I think it would have done close to 140 mph indicated.  I was in Germany on the autobahn.  I suppose that was probably closer to 108 mph actual and maybe it would have gone to 122-125 mph actual.   I had a 1982 BMW R100S that would have been rated 70 hp and fastest I took it was 105 mph indicated which was probably 97 mph actual.  That was on a deserted road in Oklahoma about 15 years ago.  It would have gone faster but I wouldn't.   Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . .     . . .     ____________________________________________________________ [b]Apple's Crazy New Gizmo[/b] Forget the iPhone 6. Next hit Apple product leaked. (see picture) fool.com
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Eddie
Posts: 472
Joined: Sat Jun 03, 2000 9:42 am

motorcycle horsepower versus speed

Post by Eddie » Tue Dec 30, 2014 2:00 pm

I remember one of the ST1100 design criteria being "100mph for 3 three hours without undo stress on neither the bike nor rider." I believe it. I changed tires on my Honda dealer buddy's one afternoon and then took it for a lengthy test ride (at his insistance). On I-85 back to Opelika,AL from Montgomery, I found myself in small line of cars passing a much slower group {a funeral, I thought}. Then I looked down at the speedometer at an indicated 110mph! The big Honda was just cruising along in perfect comfort. Oops! When I returned, my friend saw my grin and asked, "How fast?" I confessed and he just smiled and said "Yep, it'll do it all day." As for the Hayabusa's speed being affected by fairing design, one of the magazines - Kevin Cameron in Cycle World, I want to recall - mentioned the aerodynamic affect of the now banned "dustbin" fairings of post-WWII european bikes. The estimated top speed increase to a Hayabusa with one such fairing was the equiv. of an additional 75h.p. to a stock bike. 75h.p. is a HUGE difference! -eddie
----- Original Message ----- [b]From:[/b] normkel32@... [DSN_KLR650] [b]To:[/b] salinej1@... [b]Cc:[/b] DSN_KLR650@yahoogroups.com [b]Sent:[/b] Tuesday, December 30, 2014 1:18 PM [b]Subject:[/b] Re: [DSN_KLR650] Motorcycle horsepower versus speed  

Honda ST1100 100 hp, I heard of a guy who registered 228 kph (137 mph) GPS and still accelerating at the end of a short stretch. These are heavy girls which brings to the point: "I also wonder how much effect has weight on maximum speed?".   Martin Earl's anecdotes regarding streamlining a KLR was also interesting. A front air dam on one of my rally cars raised actual speed from 118 mph to 124 mph which was equivalent to a bunch of power.   Jeff's right about topping stuff out- not at my age. It simply no longer appeals to run a set of knobbies up to even modest speeds.   Had a Dunstall Commando start a lock to lock tank slapper at about 135 mph and took me between cars in an approaching line of traffic. That was "interesting". Only outcome was to break the fairing mounts loose which took 1/2 and some fibreglass to fix. Didn't even soil my shorts- those were the days. :-)   I wonder how much of the "Busa's speed is streamlining. Darn it, Martin, you are making me think that it might be fun to dig out a fairing and....nooooo!!! Not doing that!!!  Unless....  ;-)

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Norm Keller
Posts: 712
Joined: Thu Apr 01, 2004 7:48 am

motorcycle horsepower versus speed

Post by Norm Keller » Tue Dec 30, 2014 3:08 pm

#ygrps-yiv-1739865768 blockquote.ygrps-yiv-1739865768cite {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;} #ygrps-yiv-1739865768 blockquote.ygrps-yiv-1739865768cite2 {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;margin-top:3px;padding-top:0px;} #ygrps-yiv-1739865768 .ygrps-yiv-1739865768plain pre, #ygrps-yiv-1739865768 .ygrps-yiv-1739865768plain tt {font-family:monospace;font-size:100%;font-weight:normal;font-style:normal;} #ygrps-yiv-1739865768 a img {border:0px;}#ygrps-yiv-1739865768 {font-family:Tahoma;font-size:12pt;} #ygrps-yiv-1739865768 .ygrps-yiv-1739865768plain pre, #ygrps-yiv-1739865768 .ygrps-yiv-1739865768plain tt {font-family:Tahoma;font-size:12pt;} The ST1100 & KLR650 are my two favorite bikes. The ST is a no fuss no muss beast. Stick it into 5th gear at 30 mph and open the throttle. It will haul itself "electric motor smooth" up to 145 mph- that and an 800 pound ST is easier to pick up than a KLR....go figure. Not so good in the gravel though. ;-)   My nephew and younger son took his 500 Suzuki and my ST out for a ride and swapped bikes. Nephew came back shaking his head. The were on the freeway and running along at 100 kph/60 mph and nephew thought that it wasn't much smoother than his 500 until he realized that he hadn't shifted at all. He's started out in 2nd gear and was running at 60 mph in second. ST wasn't bothered. :-)   Some of my friends have had both ST & KLR and refer to the KLR as "a gravel road ST1100". I'd love to have that ST engine in something like a Honda S800 sports car.   ------ Original Message ------ From: "eddie" To: DSN_KLR650@yahoogroups.com; "Norm Keller" Sent: 2014-12-30 11:59:57 AM Subject: Re: [DSN_KLR650] Motorcycle horsepower versus speed  
I remember one of the ST1100 design criteria being "100mph for 3 three hours without undo stress on neither the bike nor rider." I believe it. I changed tires on my Honda dealer buddy's one afternoon and then took it for a lengthy test ride (at his insistance). On I-85 back to Opelika,AL from Montgomery, I found myself in small line of cars passing a much slower group {a funeral, I thought}. Then I looked down at the speedometer at an indicated 110mph! The big Honda was just cruising along in perfect comfort. Oops! When I returned, my friend saw my grin and asked, "How fast?" I confessed and he just smiled and said "Yep, it'll do it all day." As for the Hayabusa's speed being affected by fairing design, one of the magazines - Kevin Cameron in Cycle World, I want to recall - mentioned the aerodynamic affect of the now banned "dustbin" fairings of post-WWII european bikes. The estimated top speed increase to a Hayabusa with one such fairing was the equiv. of an additional 75h.p. to a stock bike. 75h.p. is a HUGE difference! -eddie ----- Original Message ----- [b]From:[/b] normkel32@...%20[DSN_KLR650] [b]To:[/b] salinej1@... [b]Cc:[/b] DSN_KLR650@yahoogroups.com [b]Sent:[/b] Tuesday, December 30, 2014 1:18 PM [b]Subject:[/b] Re: [DSN_KLR650] Motorcycle horsepower versus speed   Honda ST1100 100 hp, I heard of a guy who registered 228 kph (137 mph) GPS and still accelerating at the end of a short stretch. These are heavy girls which brings to the point: "I also wonder how much effect has weight on maximum speed?".   Martin Earl's anecdotes regarding streamlining a KLR was also interesting. A front air dam on one of my rally cars raised actual speed from 118 mph to 124 mph which was equivalent to a bunch of power.   Jeff's right about topping stuff out- not at my age. It simply no longer appeals to run a set of knobbies up to even modest speeds.   Had a Dunstall Commando start a lock to lock tank slapper at about 135 mph and took me between cars in an approaching line of traffic. That was "interesting". Only outcome was to break the fairing mounts loose which took 1/2 and some fibreglass to fix. Didn't even soil my shorts- those were the days. :-)   I wonder how much of the "Busa's speed is streamlining. Darn it, Martin, you are making me think that it might be fun to dig out a fairing and....nooooo!!! Not doing that!!!  Unless....  ;-)
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Martin Earl
Posts: 231
Joined: Wed Nov 26, 2003 10:00 pm

motorcycle horsepower versus speed

Post by Martin Earl » Tue Dec 30, 2014 6:02 pm

Norm,The air-dam technology captilized on the parasitic drag created by down pressure, and the hardware hangining out in the open.As I recall, a lot of early hot rods tinned the entire undercarriage, some vented, some not, trying to achieve a streamlined body. You know some of the earliest wind tunnel test were not done on a wind tunnel but done in the wind, nevertheless.Sometimes-It was an 'object' strapped to the front of a vehicle, sometimes several ft forward, covered with short pieces of yarn to see where the wind was going around the object. Sometimes there was photography involved, sometimes there was a second rider up close to see the yarn move about.I recall seeing a trailer that was pushed, then a scaffolding on the trailer THEN an aircraft model attached to the scaffolding. I think the whole get-up was powered by a Model A or some such thing.More than one way to achieve clean air. There is a lot of aviation technology that is not being used on bikes.Vortex generators could make a bike faster, and uglier.Props are now being given a dimpled tape (think replicating golf ball dimples) along the leading edge that allow the prop to spin up to a higher rpm on the same HP, resulting in slightly faster airplane for all power setting.I think the dimpled tape placed in strategic locations could reduce some amount of the airflow drag. The number one thing to make your bike go faster?Remove the extra 20# located at your belt line.That is what I heard.and so it goes.m1.
On Tue, Dec 30, 2014 at 11:18 AM, 'Norm Keller' normkel32@... [DSN_KLR650] DSN_KLR650@yahoogroups.com> wrote: Honda ST1100 100 hp, I heard of a guy who registered 228 kph (137 mph) GPS and still accelerating at the end of a short stretch. These are heavy girls which brings to the point: "I also wonder how much effect has weight on maximum speed?". Martin Earl's anecdotes regarding streamlining a KLR was also interesting. A front air dam on one of my rally cars raised actual speed from 118 mph to 124 mph which was equivalent to a bunch of power. Jeff's right about topping stuff out- not at my age. It simply no longer appeals to run a set of knobbies up to even modest speeds. Had a Dunstall Commando start a lock to lock tank slapper at about 135 mph and took me between cars in an approaching line of traffic. That was "interesting". Only outcome was to break the fairing mounts loose which took 1/2 and some fibreglass to fix. Didn't even soil my shorts- those were the days. :-) I wonder how much of the "Busa's speed is streamlining. Darn it, Martin, you are making me think that it might be fun to dig out a fairing and....nooooo!!! Not doing that!!! Unless.... ;-) ------ Original Message ------ From: "Jeff Saline" To: normkel32@... Cc: DSN_KLR650@yahoogroups.com Sent: 2014-12-30 10:03:34 AM Subject: Re: [DSN_KLR650] Motorcycle horsepower versus speed http://AABLLF4K2AZM3Y9J@..." type="cite"> On Tue, 30 Dec 2014 06:56:40 +0000 "'Norm Keller' normkel32@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes: A link was posted to FB showing a KLR maximum speed of 115 mph which is clearly very "optimistic": http://www.topspeed.com/motorcycles/motorcycle-reviews/kawasaki/2010-kawasaki-klr-650-ar72623.html That brought up some "guesstimate" rules of thumb I use: Honda 50 - 5 hp- 50 mph Suzuki 80 - 7.3 hp- 62 mph Honda S90 - 8 hp- 65 mph Honda CB125 12.5 hp- 75 mph Honda CB160 16 hp- 85 mph Honda CB175 20 hp- 90 mph Suzuki X6 Hustler 29 hp- 100 mph KLR650 37 hp - 100 mph Norton 750 55 hp - 115 mph Kawasaki Z1 82 hp- 132 mph Honda VF1000 122 hp- 150 mph Kawasaki Ninja ZX11 145 hp - 175 mph Suzuki Hyabusa 173 hp- 194 mph Anyone care to improve the list? <><><><><><> <><><><><><> Norm, I don't know about an improvement but I'll add to it. 1979 BMW R100S European specs 70 hp - 120 mph indicated (converted from kph) when I chickened out and slowed. I think it would have done close to 140 mph indicated. I was in Germany on the autobahn. I suppose that was probably closer to 108 mph actual and maybe it would have gone to 122-125 mph actual. I had a 1982 BMW R100S that would have been rated 70 hp and fastest I took it was 105 mph indicated which was probably 97 mph actual. That was on a deserted road in Oklahoma about 15 years ago. It would have gone faster but I wouldn't. Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . . . . . ____________________________________________________________ [b]Apple's Crazy New Gizmo[/b] Forget the iPhone 6. Next hit Apple product leaked. (see picture) fool.com
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Norm Keller
Posts: 712
Joined: Thu Apr 01, 2004 7:48 am

motorcycle horsepower versus speed

Post by Norm Keller » Tue Dec 30, 2014 10:05 pm

#ygrps-yiv-1644690913 blockquote.ygrps-yiv-1644690913cite {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;} #ygrps-yiv-1644690913 blockquote.ygrps-yiv-1644690913cite2 {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;margin-top:3px;padding-top:0px;} #ygrps-yiv-1644690913 .ygrps-yiv-1644690913plain pre, #ygrps-yiv-1644690913 .ygrps-yiv-1644690913plain tt {font-family:monospace;font-size:100%;font-weight:normal;font-style:normal;} #ygrps-yiv-1644690913 a img {border:0px;}#ygrps-yiv-1644690913 {font-family:Tahoma;font-size:12pt;} #ygrps-yiv-1644690913 .ygrps-yiv-1644690913plain pre, #ygrps-yiv-1644690913 .ygrps-yiv-1644690913plain tt {font-family:Tahoma;font-size:12pt;} If any modification would make a KLR look unbalanced or unfinished, it would be out of the question. ;-)   Does anyone remember Jim Hall's Cheetah Chaparral race cars? He if memory served, he tried a vacuum pump system to create a low pressure area under the car in increase traction and reduce drag. Long, long time ago...  http://c-lab.columbia.edu/0094.html   A 55 hp engine to operate the vacuum pump might help the KLR's top speed. Might be a bit less than happy in water crossings and dust?   :-)    ------ Original Message ------ From: "Martin Earl" To: "DSN KLR650" DSN_KLR650@yahoogroups.com>; "Norm Keller" Sent: 2014-12-30 4:02:23 PM Subject: Re: [DSN_KLR650] Motorcycle horsepower versus speed  
Norm, The air-dam technology captilized on the parasitic drag created by down pressure, and the hardware hangining out in the open. As I recall, a lot of early hot rods tinned the entire undercarriage, some vented, some not, trying to achieve a streamlined body. You know some of the earliest wind tunnel test were not done on a wind tunnel but done in the wind, nevertheless. Sometimes- It was an 'object' strapped to the front of a vehicle, sometimes several ft forward, covered with short pieces of yarn to see where the wind was going around the object.  Sometimes there was photography involved, sometimes there was a second rider up close to see the yarn move about. I recall seeing a trailer that was pushed, then a scaffolding on the trailer THEN an aircraft model attached to the scaffolding.  I think the whole get-up was powered by a Model A or some such thing. More than one way to achieve clean air. There is a lot of aviation technology that is not being used on bikes. Vortex generators could make a bike faster, and uglier. Props are now being given a dimpled tape (think replicating golf ball dimples) along the leading edge that allow the prop to spin up to a higher rpm on the same HP, resulting in slightly faster airplane for all power setting. I think the dimpled tape placed in strategic locations could reduce some amount of the airflow drag. The number one thing to make your bike go faster? Remove the extra 20# located at your belt line. That is what I heard. and so it goes. m1. On Tue, Dec 30, 2014 at 11:18 AM, 'Norm Keller' normkel32@... [DSN_KLR650] DSN_KLR650@yahoogroups.com> wrote: Honda ST1100 100 hp, I heard of a guy who registered 228 kph (137 mph) GPS and still accelerating at the end of a short stretch. These are heavy girls which brings to the point: "I also wonder how much effect has weight on maximum speed?".   Martin Earl's anecdotes regarding streamlining a KLR was also interesting. A front air dam on one of my rally cars raised actual speed from 118 mph to 124 mph which was equivalent to a bunch of power.   Jeff's right about topping stuff out- not at my age. It simply no longer appeals to run a set of knobbies up to even modest speeds.   Had a Dunstall Commando start a lock to lock tank slapper at about 135 mph and took me between cars in an approaching line of traffic. That was "interesting". Only outcome was to break the fairing mounts loose which took 1/2 and some fibreglass to fix. Didn't even soil my shorts- those were the days. :-)   I wonder how much of the "Busa's speed is streamlining. Darn it, Martin, you are making me think that it might be fun to dig out a fairing and....nooooo!!! Not doing that!!!  Unless....  ;-)   ------ Original Message ------ From: "Jeff Saline" To: normkel32@... Cc: DSN_KLR650@yahoogroups.com Sent: 2014-12-30 10:03:34 AM Subject: Re: [DSN_KLR650] Motorcycle horsepower versus speed   http://AABLLF4K2AZM3Y9J@..." type="cite"> On Tue, 30 Dec 2014 06:56:40 +0000 "'Norm Keller' normkel32@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> writes:   A link was posted to FB showing a KLR maximum speed of 115 mph which is clearly very "optimistic": http://www.topspeed.com/motorcycles/motorcycle-reviews/kawasaki/2010-kawasaki-klr-650-ar72623.html   That brought up some "guesstimate" rules of thumb I use: Honda 50 - 5 hp- 50 mph Suzuki 80 - 7.3 hp- 62 mph Honda S90 - 8 hp- 65 mph Honda CB125 12.5 hp- 75 mph Honda CB160 16 hp- 85 mph Honda CB175 20 hp- 90 mph Suzuki X6 Hustler 29 hp- 100 mph KLR650 37 hp - 100 mph Norton 750 55 hp - 115 mph Kawasaki Z1 82 hp- 132 mph Honda VF1000 122 hp- 150 mph Kawasaki Ninja ZX11 145 hp - 175 mph Suzuki Hyabusa 173 hp- 194 mph   Anyone care to improve the list? <><><><><><> <><><><><><>   Norm,   I don't know about an improvement but I'll add to it.   1979 BMW R100S European specs 70 hp - 120 mph indicated (converted from kph) when I chickened out and slowed.  I think it would have done close to 140 mph indicated.  I was in Germany on the autobahn.  I suppose that was probably closer to 108 mph actual and maybe it would have gone to 122-125 mph actual.   I had a 1982 BMW R100S that would have been rated 70 hp and fastest I took it was 105 mph indicated which was probably 97 mph actual.  That was on a deserted road in Oklahoma about 15 years ago.  It would have gone faster but I wouldn't.   Best, Jeff Saline The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650 . . . .     . . .     ____________________________________________________________ [b]Apple's Crazy New Gizmo[/b] Forget the iPhone 6. Next hit Apple product leaked. (see picture) fool.com
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