aww but that ruins all the fun....then where's your sense of achievement

Hi
Having spent many hours over winter in the garage working on my track bike after last weeks balst at Oulton the three stand out mods that really made a difference are:
Gearing 14/43.. the acceleration is as good as my 749
Tyres, Diablos are awesome even in the wet
and something not to everyones taste bit fitted a quick action throttle - might be a bit twitchy for some on the road but on the track it's essential.

Cheers for the replies all.
After buying the bike, I certainly ain't got money to burn.....
I certainly don't have 1/2 day spare at the mo, if I get chance, I may have a go sooner.

Cheers, Phil

Has anyone posted dyno results from before and after carb mods (showing fuelling ratio) on an otherwise stock bike. Had a quick search but couldn't find anything.

Had another run out today, definately a bit lame up to 6k (from about 4 1/2), worse when it's hot which, as mentioned, indicates lean. Also bike starts & runs wonderfully when cold but is a little more reluctant when warm (after being hot & stood a while) - a bit rich on the pilots???

Phil

Have a read of this:

viewtopic.php?f=24&t=11503

Nice bike (in the best colours too )

Do you have a dyno run with the stock jets?

I must admit, it looks to be running quite rich with the 120 jets & the aftermarket exhaust.

Phil

Unfortunately I don't have graphs with stock jets. Sorry.
Do you mean mine looks like it's running rich?

alexwitham wrote:Unfortunately I don't have graphs with stock jets. Sorry.
Do you mean mine looks like it's running rich?

Yeah, fuel curve is spending a lot of time below 13:1 which means a bike that stinks to follow & wastes fuel, I bet your exhaust is sooty too!
Best to keep between 13 & 14.5:1 - to the lower end of this for power & upper end of this for economy.

Phil

I'm now running modified induction on the same carb setting and it runs great. It used to pop and fart a touch before I done some fettling with the airbox/filter/snorkel etc.
It pulls very strong now.

UPDATE;
I had the carbs off, all stock (110) mains & 35 pilots allround, stock needles & a single .5mm washer under each. Pilot screws were between 2.1 & 2.6 turns out (two were 2.5/2.6 turns out). Emulsion tubes 2 were correct, 2 had been fitted in the wrong carbs......
Float heights - all were .5 to 1mm too high (smaller measurement).

With carbs set to correct stock standard, except the 115/117.5 mains from RO, the bike feels good - stronger at 9k+ not as boggy at 5-7 k rpm but still feels a bit feeble - again, more so when warm.

I'll leave it a while, might try & get to the dyno day on 16/7

Phil