Benelli 2C - Practice Reports - Daily
Bill Snelling Offline
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RE: Benelli 2C - Practice Reports - Daily
Good morning all from a sunny Isle of Man (sorry, late again!)

Last nights practice saw us complete our required 5 laps for qualifying however we still need one lap at the required time of just under 85mph.

That said - it was wet and windy and generally awful conditions last night and we had a 80 plus mph lap from a standing start on rain soaked roads - so not a bad omen!

Second lap ended at Creg ny Baa with the gear level falling off! Ho hum!

Engine No 3 performed superbly well with bags of mid range combined with a close ration box giving Fozzy an excellent tool for the job and one which he is confident should allow him to achieve the required qualifying time.

His speed through the start / finish speed trap was 92.9mph last night - up almost 5mph on our previous best so a massive improvement.

We will now leave Engine No 3 in for practice tonight and the race on Monday.

For those interested in the tuning spec - here it is:-

2mm higher exhaust port and 1mm wider
Boost port added (this is the cunning bit!!!)
2mm off the skirt of the piston to increase inlet duration
1mm off the inside of the inlet manifolds

So as you can see - not a staggering amount of change but what a difference to Engine No 1 which is limited to the exhaust port modifications only.

The use of a boost port as prescribed by Walter Kaadan is a cunning way of increasing mid range power and cooling the underside of the piston at the same time. This technology actually dates back to the 20's - so nothing is new - just reused! The ex works TT bike uses the same approach and hence we have now adapted same for our bike.

All good fun and lets see what we can do tonight.
I'm on the Great Flapjack Foray of Life - can't you tell!
“You don’t stop riding because you get old. You get old because you stop riding”
29-08-2009, 09:42 PM
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RE: Benelli 2C - Practice Reports - Daily - by Bill Snelling - 29-08-2009, 09:42 PM



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