low power and brake issue

Ernest Montague afm199 at earthlink.net
Mon Jun 2 12:27:42 PDT 2008


pointless to speculate without knowing your exhaust, carbs, 
airbox/filter and motor


On Jun 2, 2008, at 11:40 AM, Wendell Crain wrote:

> Well, I took the "3 week wonder" to the track and something definitely 
> isn't right. During the second 20 minute session, I ran out of gas. I 
> know I didn't have the tank all the way full, but this was excessive. 
> I ended up using about 7 gallons for evening. There was so much fuel 
> going through it, you could smell it in the exhaust. I never even 
> thought to check that before. The bike had no top end power at all. 
> Going with WOT, I was at least 10 seconds down on a lap time. I know I 
> am slow, but definitely not that slow. We rode the primary bike for 
> the endurance race on Saturday and going through the pits, I found 
> someone that loaned me some smaller jets. (Based on another mechanics 
> advice there, his suggestion was to go to around a DJ130 and remove 
> both shims from the nylon spacer on the needles.) So I spent Saturday 
> evening swapping over to the smaller mains and trying very hard not to 
> lose any small parts inside my tiny trailer. In Sunday practices, the 
> bike seemed like it had a bit more, but I was still down 8-9 seconds 
> and this was going around most corners WOT. I wasn't using quite as 
> much fuel though. While the bike was running you could still smell 
> unburnt fuel, just not as strong. The mechanic made suggestions on 
> things to try, since I have 2 weeks before the next round. Since I 
> have DJ mains in it and stock needles, he recommended buying the DJ 
> needles (or complete kit). I do have another set of carbs I had 
> purchased, so he recommended setting those up to see if something is 
> wrong with the first set. (As a quick easy test without tearing the 
> first set down to find an issue.) Rebalancing the carbs. Do a 
> compression check. (Anyone know what kind of number I would look for 
> in central Ohio?) If the compression numbers don't look good, a leak 
> test would be next. (I really don't have a clue on how to do that 
> one.)
>
> Wendell
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