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Can anyone with experience of changing from square slide carbs to round slide,or even flat slide, find any performance gains to be had? My engine is based on a 350 sport, now bored to 410 with open pipes and foam filters. Used in flattrack racing on speedway ovals.

The blue book do's not cater for possible race setup as far as i remember. I would look at the valve to piston clearance, with some kind of silver solder or Plasticine in the valve area. If you have a high lift cam and raised compression ratio, you may be running out of clearance. I run a 350/410 in...

Are you still looking for a starter Peter?

I have a solenoid operated fuel tap for sale, Tested on a battery and could blow through when connected , £20 + post

Thanks for that, it will be cheap, but im not that desperate to own one if its not right, i have the back plate and rotor, i need to measure the angle between the 2 points of fire,

Has anyone tried a Rita electronic ignition? i have been offered one, so it would be interesting to get some feedback before i start playing with it.

Wanted a pair of 26mm PHBH carbs, must be in good condition.

Ok thanks for the input, i have to say the best way to iron out the mid range problem is a dyno with someone who knows his stuff, iv'e used them for years, it definitely got me in the ball park. saves hours of guess work.

What made you choose the 262T ? i do not see it listed for other models? i will order both needles and see how it go's. but i suspect it will need the 50 slide, to help the midrange flatspot, so many people ignore the slide, it plays an important role and should be changed if necessary, if you have ...

I am about to order a pair of 28mm dellorto's that will be going on my 410 flattrack race bike, can anyone suggest any jetting so i can specify when i order.

Im working on a 1999 350 it wasn't running very well when i took it in, but that turned out to be a split carb rubber. It is better now it has 2 new rubbers but it do's not pull well over 60mph. it go's a bit flat , i strobed the timing and the front cylinder is advancing and i adjusted until it was...

I have 2 Lafranconi silencers brand new never fitted if they are of any use to you? they are not stainless, they were the last 2 that Nlm had at the time, One is black the other was chrome, i sprayed them both with satin black heat resistant paint so they would at least match.

Have you tried doing a plug chop after holding the bike at the required revs to make it splutter for as long as is safely possible on an open road, it will give you an indication of wether it is running rich or lean, The needle position can effect it around half throttle, and possibly going down on ...

Pete i sent you a PM regarding the cam, but no reply?

I will have to ask Paul what I payed for it. As i can't remember. It's never been fitted. You are welcome to try it in some case's and see what numbers come up.