when is filling up not good for your klr? (sorta related)

[Wayne Blackburn]

I recently replaced my broken dohicky with eagle mikes upgraded doo and torsion spring. My question is,At about 3800 rpms there is a vibration.Anything above or below this rpm, it seems to smooth out. Is this normal or something of concern? Something I forgot to mention was, It has always done this. Before and after doo replacement. --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. [Non-text portions of this message have been removed]

[Jeff Saline]

On Fri, 28 Dec 2007 05:48:06 -0800 (PST) Wayne Blackburn writes:

> I recently replaced my broken dohicky with eagle mikes upgraded doo > and torsion spring. My question is,At about 3800 rpms there is a > vibration.Anything above or below this rpm, it seems to smooth out. > Is this normal or something of concern? Something I forgot to > mention was, It has always done this. Before and after doo > replacement.

<><><><><><><> <><><><><><><> Wayne, Did you check the balancer shafts to make sure they were in time? I suppose the vibration could be caused by being just one tooth off on one shaft. As I recall you may need to turn the crank up to 9 revolutions (counterclockwise) to get the balancer shaft marks and the mark on the crank to all line up. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT

[Darren Clark]

Wayne, This happened on my bike. The broken doo caused too much slack in the chain and everything was out of time. I'm just glad it didn't kill my bike. Darren Clark 2004 KLR650 Fowlerville, MI Jeff Saline wrote:

>On Fri, 28 Dec 2007 05:48:06 -0800 (PST) Wayne Blackburn > writes: > > >>I recently replaced my broken dohicky with eagle mikes upgraded doo >>and torsion spring. My question is,At about 3800 rpms there is a >>vibration.Anything above or below this rpm, it seems to smooth out. >>Is this normal or something of concern? Something I forgot to >>mention was, It has always done this. Before and after doo >>replacement. >> >> ><><><><><><><> ><><><><><><><> > >Wayne, > >Did you check the balancer shafts to make sure they were in time? > >I suppose the vibration could be caused by being just one tooth off on >one shaft. > >As I recall you may need to turn the crank up to 9 revolutions >(counterclockwise) to get the balancer shaft marks and the mark on the >crank to all line up. > >Best, > >Jeff Saline >ABC # 4412 South Dakota Airmarshal >Airheads Beemer Club www.airheads.org >The Beautiful Black Hills of South Dakota >75 R90/6, 03 KLR650, 79 R100RT > > >List sponsored by Dual Sport News at: www.dualsportnews.com >List FAQ courtesy of Chris Krok at: www.bigcee.com/klr650faq.html >Member Map at: http://www.frappr.com/dsnklr650 >Yahoo! Groups Links > > > > > >

[Non-text portions of this message have been removed]

[Mike]

--- In DSN_KLR650@yahoogroups.com, Jeff Saline wrote:

> > On Fri, 28 Dec 2007 05:48:06 -0800 (PST) Wayne Blackburn > writes: > > I recently replaced my broken dohicky with eagle mikes upgraded doo > > and torsion spring. My question is,At about 3800 rpms there is a > > vibration.Anything above or below this rpm, it seems to smooth out. > > Is this normal or something of concern? Something I forgot to > > mention was, It has always done this. Before and after doo > > replacement. > <><><><><><><> > <><><><><><><> > > Wayne, > > Did you check the balancer shafts to make sure they were in time? > > I suppose the vibration could be caused by being just one tooth off on > one shaft. > > As I recall you may need to turn the crank up to 9 revolutions > (counterclockwise) to get the balancer shaft marks and the mark on the > crank to all line up. > > Best, > > Jeff Saline > ABC # 4412 South Dakota Airmarshal > Airheads Beemer Club www.airheads.org > The Beautiful Black Hills of South Dakota > 75 R90/6, 03 KLR650, 79 R100RT >

Actually, it's nine revolutions of the chain to get the marks to line up again. Seventy links in the chain, eighteen teeth on the sprockets, right? Nine crank rev's gives 162 links, right. Least common multiple would be 630 chain links, 35 crank revolutions, or 9 chain rev's. and no coffee yet......... Check your drive chain and sprockets? If the only thing you changed was the balancer parts, and the balancer chain and weights are in time, it could be something showing up in the final drive system. Even tires can do something like this, if the vibration shows up mostly at a certain speed. Broken balancer springs and levers have also been known to change cam timing. all the best, Mike

[Jeff Saline]

On Fri, 28 Dec 2007 17:16:07 -0000 "Mike" writes:

> Actually, it's nine revolutions of the chain to get the marks to > line > up again. Seventy links in the chain, eighteen teeth on the > sprockets, > right? Nine crank rev's gives 162 links, right. Least common > multiple > would be 630 chain links, 35 crank revolutions, or 9 chain rev's. > > and no coffee yet......... > > Check your drive chain and sprockets? If the only thing you changed > was the balancer parts, and the balancer chain and weights are in > time, it could be something showing up in the final drive system. > Even > tires can do something like this, if the vibration shows up mostly > at > a certain speed. Broken balancer springs and levers have also been > known to change cam timing. > > all the best, > > Mike

<><><><><><> <><><><><><> Mike, DANG!!! That makes my head hurt. : ) Thanks for the explanation. Best, Jeff

[Mick Moriarty]

How do you find cheap gas? Easy, fill up on expensive stuff, you'll find the cheap stuff shortly afterwards Mick. --------------------------------- Never miss a thing. Make Yahoo your homepage. [Non-text portions of this message have been removed]

[grufrude]

Yeah, Jeff, I KNEW it took more than 9 revolutions of the crank to get the balancer marks to line up on my bike as you kept predicting dire results because of the way I was pulling the wrench GRIN!

--- In DSN_KLR650@yahoogroups.com, Jeff Saline wrote: > > > On Fri, 28 Dec 2007 17:16:07 -0000 "Mike" > writes: > > Actually, it's nine revolutions of the chain to get the marks to > > line > > up again. Seventy links in the chain, eighteen teeth on the > > sprockets, > > right? Nine crank rev's gives 162 links, right. Least common > > multiple > > would be 630 chain links, 35 crank revolutions, or 9 chain rev's. > > > > and no coffee yet......... > > > > Check your drive chain and sprockets? If the only thing you changed > > was the balancer parts, and the balancer chain and weights are in > > time, it could be something showing up in the final drive system. > > Even > > tires can do something like this, if the vibration shows up mostly > > at > > a certain speed. Broken balancer springs and levers have also been > > known to change cam timing. > > > > all the best, > > > > Mike > <><><><><><> > <><><><><><> > > Mike, > > DANG!!! That makes my head hurt. : ) Thanks for the explanation. > > Best, > > Jeff >

[Jeff Saline]

On Sat, 29 Dec 2007 18:58:44 -0000 "grufrude" writes:

> Yeah, Jeff, > > I KNEW it took more than 9 revolutions of the crank to get the > balancer marks to line up on my bike as you kept predicting dire > results because of the way I was pulling the wrench GRIN!

<><><><><><><> <><><><><><><> Hugh, Those dire results were more like a heart attack than a mechanical issue. : ) Hope the weather has warmed a bit for you. Yesterday sounded like you were working in an ice box. I've been in the shop on the RT project with the temp a nice cozy 66 degrees. Best, Jeff