Kawasaki KLR 650 Forum - Reply to Topic
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

Thread: Manual Balancer Chain Mod. Reply to Thread
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  Topic Review (Newest First)
07-22-2015 05:10 PM
Drifter. The Military KLR diesels did not use the balancer system. They vibrated bad without it!
07-21-2015 08:34 AM
twinjet
Quote:
Originally Posted by GoMotor View Post
Yes, he used an electric coolant pump. You have to imagine that pumping five gallons per minute at 3,500 rpm used up most of the excess charging capacity. No room for extra lights or heated clothing.
Too bad, I was hoping that removing the balance shafts might be a great way to solve the "doo" issue and simplify the engine at the same time.

Old Bultaco TSS road racers used thermo cycling to circulate coolant. But I don't have the guts to try that on a KLR.
07-21-2015 02:08 AM
GoMotor Yes, he used an electric coolant pump. You have to imagine that pumping five gallons per minute at 3,500 rpm used up most of the excess charging capacity. No room for extra lights or heated clothing.
07-21-2015 01:15 AM
650Stew I think he was running some sort of electric water pump. He ran it for a while without the balancer... Said he even did some 700 km days. I'm not sure if he kept at it or not, I remember him saying once that the KLR wasn't really the bike for his needs and he wanted to get something lighter.
07-20-2015 02:28 PM
Damocles
Quote:
Originally Posted by GoMotor View Post
The water pump runs on the front shaft.
Through a haze, darkly, my memory indicates he actually accommodated coolant circulation; maybe with an auxiliary water pump or some such work-around.

Yet, again if I recall correctly, he did run the engine without active balancer. Successfully? Ain't sure.

Don't know the advantage to jettisoning the balancer system, beyond shedding weight. After the chain and shafts are in motion, looks to me like the only forces to overcome are those of bearing and chain friction, and air resistance; no huge power drain, I would think (or Newton's First Law of Motion was his idea of a joke).
07-20-2015 12:13 PM
GoMotor The water pump runs on the front shaft.
07-20-2015 11:11 AM
650Stew
Quote:
Originally Posted by twinjet View Post
Now that's scary.
Lol, I just meant he quit posting, he didn't actually disappear
07-20-2015 09:29 AM
twinjet
Quote:
Originally Posted by 650Stew View Post
Yup, a guy by the name of Peter650 was messing around with removing the balancing system... Never found out how it worked for him long term though because he kind of disappeared.
Now that's scary.
07-20-2015 09:24 AM
650Stew
Quote:
Originally Posted by twinjet View Post
Has anyone tried running without the balance shafts?

I had a 650 BSA twin that would turn it's handlebar ends into a one inch blur at idle but was completely ride able at speed.
Yup, a guy by the name of Peter650 was messing around with removing the balancing system... Never found out how it worked for him long term though because he kind of disappeared. Too bad really, he was a real out of the box thinker .
Edit: He didn't remove the shafts, but did disable the balancer http://www.klrforum.com/2008-klr650-...g-dooless.html
07-20-2015 08:42 AM
twinjet Has anyone tried running without the balance shafts?

I had a 650 BSA twin that would turn it's handlebar ends into a one inch blur at idle but was completely ride able at speed.
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