Wilsons Sandbox

Pete Chester be Da Mane! Not sure he's ready for orders yet. Does sound interestin though, Huh! Rod

--- In DSN_KLR650@yahoogroups.com, "gwing86" wrote: > > In the photo section there is a pick of a torsion counter balace > tension spring. Anyone know where to get more info on this. I looks to > be a better option to me. >

There will probable be something in the near future with a torsion spring that will work on the existing after market balancer chain adjusting levers (Doohickeys). They will snap into place without any need for drilling. Should be nice. Pete Chester A16

--- In DSN_KLR650@yahoogroups.com, "Rodney Copeland" wrote: > > Pete Chester be Da Mane! > Not sure he's ready for orders yet. > Does sound interestin though, Huh! > Rod > > > > > --- In DSN_KLR650@yahoogroups.com, "gwing86" wrote: > > > > In the photo section there is a pick of a torsion counter balace > > tension spring. Anyone know where to get more info on this. I looks > to > > be a better option to me. > > >

PS I am not the one who is making them. A trusted member of the KLR650 group is doing it. Pete --- In DSN_KLR650@yahoogroups.com, "pete88chester" wrote:

> > There will probable be something in the near future with a torsion > spring that will work on the existing after market balancer chain > adjusting levers (Doohickeys). They will snap into place without

any

> need for drilling. Should be nice. Pete Chester A16 > > --- In DSN_KLR650@yahoogroups.com, "Rodney Copeland"

wrote:

> > > > Pete Chester be Da Mane! > > Not sure he's ready for orders yet. > > Does sound interestin though, Huh! > > Rod > > > > > > > > > > --- In DSN_KLR650@yahoogroups.com, "gwing86" wrote: > > > > > > In the photo section there is a pick of a torsion counter

balace

> > > tension spring. Anyone know where to get more info on this. I > looks > > to > > > be a better option to me. > > > > > >

> There will probable be something in the near future

Pete: Not to pry, but can you give any details on approximately when ? I'm getting ready to do the doo this winter on a bike w 3300 mi. The present doo is OK, so rather than dooing it now I'd rather wait for a better spring. If you're thinkin that it's a year or more out, I'll just go w the present replacement spring. Thanks for pioneering this hardware! Shame Kwak didn't think of it.... Coop A10 VX800

How is one to know if the spring is designed properly, and properly manufactured to the design? How is it better than the coil spring design. Jim A17

--- In DSN_KLR650@yahoogroups.com, "pete88chester" wrote: > > There will probable be something in the near future with a torsion > spring that will work on the existing after market balancer chain > adjusting levers (Doohickeys). They will snap into place without any > need for drilling. Should be nice. Pete Chester A16 > > --- In DSN_KLR650@yahoogroups.com, "Rodney Copeland" wrote: > > > > Pete Chester be Da Mane! > > Not sure he's ready for orders yet. > > Does sound interestin though, Huh! > > Rod > > > > > > > > > > --- In DSN_KLR650@yahoogroups.com, "gwing86" wrote: > > > > > > In the photo section there is a pick of a torsion counter balace > > > tension spring. Anyone know where to get more info on this. I > looks > > to > > > be a better option to me. > > > > > >

Good question, I too wonder about the load comparisons and about the range dynamics. The standard spring is low tech and a known failure point. I'm not confident the new springs are on par with the new do yet. --Jim A-15

> How is one to know if the spring is designed properly, and properly > manufactured to the design? How is it better than the coil spring

design.

> > Jim A17

My thoughts are that a torsion spring would provide a more linear pull force across a wider range of travel for the lever, if designed properly. This could be especially useful for those of us that may not want to change out the balancer chain as often and have ground our case to maximimize clearance for the chain to be adjusted. I went with the shortest spring for this very reason. Rod

--- In DSN_KLR650@yahoogroups.com, "Jim" wrote: > > Good question, I too wonder about the load comparisons and about the > range dynamics. The standard spring is low tech and a known failure > point. I'm not confident the new springs are on par with the new do yet. > --Jim > A-15 > > > How is one to know if the spring is designed properly, and properly > > manufactured to the design? How is it better than the coil spring > design. > > > > Jim A17 >

Jim A15 & Jim A17: I am the person that did the original torsion spring conversion, the one that is pictured in this sites Photo Section. Before I went to the spring manufacturer to discuss making this spring I figured out by measuring the force needed to extend the spring the greatest amount that would normally occur. Using this force I was able to calculate the torque that would be applied to the idler shaft by the spring pulling on the spring lever. It was something like 10 inch-pounds (I have it written in my notes somewhere). This information along with the range of motion I needed & other measurement was given to the spring manufacturer along with drawings. In other words it was all calculated out. What is good about this torsion spring as it is designed is that it will provide a torque force over a large range. The torsion spring when it is first installed with a new chain is rotated something like 160 degrees from its relaxed state to its highest range of torque it will apply to the idler shaft (it was designed to be a little under its maximum safe deflection). The idlershaft-adjusting lever (aka Doohickey) only has a range of angular movement of about 30 degrees (estimated) from the installed point to the end of the range of adjustment. That adjusting range is all on the upper end of the torsion springs torsional force range & only a small amount would be lost over the adjusting range of the Doohickey. Probable with a properly adjusted balancer chain not anywhere near all the adjusting range will be used over the life of the engine. That is the problem with the stock system using the tension springs, they don't have a great enough range of movement. A lot of these springs are being installed with only about 1/8 inch of stretch. It isn't long before there is not enough force being applied to tension the balancer chain. The other problem with the tension springs & the one that has the most to due with them breaking is that they act through a separate lever that is not clamped down after the adjustment is done. Even with a properly adjusted balancer chain vibrations from the chain will act on the tension spring through the eccentric shaft & the spring lever. With the torsion spring acting directly on the Doohickey to adjust the balancer chain slack, once the Doohickey is clamped down by the adjusting bolt the torsion spring is no longer subjected to the relatively high amplitude vibrations that cause the tension springs to break. Any way a lot of thought went into this torsion spring design. A lot of thought also is going into the new one that will not need any drilling to be installed. Sincerely, Pete Chester A16

--- In DSN_KLR650@yahoogroups.com, "Jim" wrote: > > Good question, I too wonder about the load comparisons and about the > range dynamics. The standard spring is low tech and a known failure > point. I'm not confident the new springs are on par with the new do yet. > --Jim > A-15 > > > How is one to know if the spring is designed properly, and properly > > manufactured to the design? How is it better than the coil spring > design. > > > > Jim A17 >

--- In DSN_KLR650@yahoogroups.com, "Rodney Copeland" wrote:

> > My thoughts are that a torsion spring would provide a more linear > pull force across a wider range of travel for the lever, if designed > properly. > This could be especially useful for those of us that may not want to > change out the balancer chain as often and have ground our case to > maximimize clearance for the chain to be adjusted. > I went with the shortest spring for this very reason. > Rod

Since I have to replace my stator and will have the left cover off I figured it would be a good time to do some preventative maintenance on the hoohickey, so I ordered the $129 Eagle doohickey kit from Fred. I assumed this kit was the final word, clearly not. Hmmmn. I have to put on the new stator this week. Is not doing the Doohickey and waiting for some "improved" spring a case of fools wisdom ... aka install what I have and stop worrying? Any advice? Tony