Carby Carb running dry at WOT

[gothicguy64]

everyone i talk to asks "you hear about how theyre trying to ban these?"

slow the **** down, use ya brain, or well all lose the priviledge! go fast on empty roads in the sticks, not in traffic in populated areas!


probably one of these people that rides on the footpath expecting everyone to get out the way too...

this is nsw, the nanny state. remember that.

*end rant*

hmmmmm where to start .....

aussie law is 200 watts of power
aussie law is the sign posted speed limit unless on path then its 20kph
pity im a sandgroper living in dirty sydney full of bloody arab imports
an i usally do 40 kph but i am able to go much faster an do if its safe to do so like in places i do 60 on the hume goin into the city an it freaks cars an m/bikes ...me on a pushy doin 60 ........
the rd from penrith is much better for doin 70 its downhill
up i do maybe 55 ...
an yes i am worried i ride a outlawed pushy (its well over 1800 watts )


brad

 

[olow]

:helmet: so hows it running now

 

[lazylightning@mail.r]

I drilled it out to a 1.5 mm. Yes, it was actually smaller than that. I don't know if all of the stock carbs have such a narrow inlet tube/float bowl valve seat, maybe I just got lucky. It may be kind of a top speed governor mechanism.

 

[lazylightning@mail.r]

Hi Guys!

I think I made a significant discovery here. The brass inlet tube/float bowl valve seat had a very narrow feed hole down in there. It was about 1 mm in diameter and drilling it out to 1.5mm did the trick. Has anybody else had troubles with getting enough fuel into the stock carb float bowl at high speed? I had to use a larger bit to widen the orifice so the needle valve could be pushed up in it easily and have a better seating surface. To which I carefully tapped an object with the same cone form and size of hard metal just as the valve seat. Don't hammer on that valve, it has a very narrow support at the end. Now the valve never misses the hole and it seals perfectly and I get enough gas to feed the motors needs. I think that this is signifigant because that 1 mm orifice was just not feeding enough gas in there fast enough and my jet is bored out to only .71mm.

 

[Al.Fisherman]

No, I've never hat that problem out of 5 builds, all using a NT carburetor.

 

[motorpsycho]

No, I've never hat that problem out of 5 builds, all using a NT carburetor.

Me either.
4 builds ann using n.t. carbs.
they will run at w.o.t. as long as you want them to.

 

[lazylightning@mail.r]

That's strange, but then again, that which the Chinese ship to Russia may differ from what is shipped to the US for some unfounded reasoning on the shipper's part. Maybe they think the Russian government is strict or something and they don't want people driving fast, or maybe it's just the kind of thing that is required of them inside of China and the same got shipped to Russia. A 1 mm inlet hole. Check your's the next time you have it off.