RPM Issues 08 D7

[TROUT HUNTER]

Well first ride out on fresh springs, derilins in the Sec. and a balanced primary I was pulling 8200 at 7k feet with 10-58s. What I wanted. By the end of the ride most it would pull was 7900, and this last weekend 7850.

Any suggestions on where to look to find the RPM loss?
Was going to check valves to see if they are dirty since they are about 100 miles short of where I have been cleaning them. Bottom end pulls super hard just that top end is gone.

[785rmk]

Do you have any oil on top of the bellows? Possibly cracked bellows. Also check the port in the cylinder that activates the valves.

[785rmk]

'bout forgot did you smoke a belt, if you have a new one try it.

[TROUT HUNTER]

Just road rides, nothing to crazy yet.

Guessing its something in the valves, planning on pulling em apart in the AM.

[785rmk]

Originally Posted by BUBBA

Guessing its something in the valves.

Same here. Let us know what you found.

[dansyl159]

Bubba, my money would be the drive belt. Seriously doubt cracked bellows, you'd see a more dramatic drop in rpm.

[AKSNOWRIDER]

I would think belt as well.....

[TROUT HUNTER]

Well Im going to do some cleaning anyhow ( never hurts ) and Ill take a new belt along and try it out next ride and see if that helps at all.

Thanks guys.

[sasquatch]

I would also bet on the belt

[785rmk]

was that the first ride of the season? could have chit fuel, too.