kick stand safety alternative?

[Tengai Mark Van Horn]

I haven't really followed this mod as I generally don't mess with the mechanicals of a stock system that's working OK. My Tengai is at 60K miles and loses no oil. I can see how this PCV thing can control oil consumption. However, has anyone actually measured the crankcase vacuum created by one of these valves? Without any sort of breather or control/relief valve, I would guess the vacuum is pretty strong, being a big one-banger with no opposing piston to help equalize pressure. I think too much vacuum would prevent oil from sufficiently making it to the rings, accelerating piston/cylinder wear. Also, an increased amount of blow-by and unburnt fuel would enter the crankcase, putting more strain on the oil additives. Anyone? Mark

[RobertWichert]

Yes, even a speed bump can make that noise. Irritating. Robert P. Wichert P.Eng LEED AP +1 916 966 9060 FAX +1 916 966 9068 ===============================================

On 3/10/2011 5:05 AM, Tengai Mark Van Horn wrote: > > On my old "thrash-o-matic" KLR650 woods-beater/insect-fogger, I had > installed two stock kickstand springs to prevent a bouncing kickstand. > I also has the safety cable removed, but I was annoyed by the > bouncing kickstand on rough trails because the sound make me think I > was losing parts of my bike. > > Mark > > At 10:54 AM -0800 3/9/11, RobertWichert wrote: > One thing that I don't like about the kickstand > safety is that it can disable the spark when hitting a bump. > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed]

[roncriswell@sbcglobal.net]

A friend of mine is leaking oil quite a bit after he did the 685 conversion. I guess this might help him? Criswell

On Mar 10, 2011, at 7:42 AM, Tengai Mark Van Horn wrote: > I haven't really followed this mod as I generally don't mess with the > mechanicals of a stock system that's working OK. My Tengai is at 60K > miles and loses no oil. > I can see how this PCV thing can control oil consumption. However, > has anyone actually measured the crankcase vacuum created by one of > these valves? Without any sort of breather or control/relief valve, I > would guess the vacuum is pretty strong, being a big one-banger with > no opposing piston to help equalize pressure. I think too much > vacuum would prevent oil from sufficiently making it to the rings, > accelerating piston/cylinder wear. Also, an increased amount of > blow-by and unburnt fuel would enter the crankcase, putting more > strain on the oil additives. > Anyone? > > Mark > [Non-text portions of this message have been removed]