Once the barrel is back together (correct the issue that arose at Hawkes Bay north island round a few years back).
Then we can get onto sorting out this issues.
I've learnt a lot playing with the Richards' 300s.
I think some of the drop can be resolved with improved power valve operation.
Lifting the barrel to get a little more than the 122 transfer duration.
Then maybe time to look at the pipe again...
Scotty, do you think it's possible to press the sleeve out completely? To do some work on it?
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He's saying it opening too soon. But barrel is feckef with crazy low vs crazy high timing,
Don't you look at my accountant.
He's the only one I've got.
Detail is I'm on holiday and staying up too late drinking grape juice so please excuse the rhetoric.
Memory had your transfers at 122 and your exhaust already at quite a high number. Barrel raise might make that crazy high. Although the PV does help of course.
. But on a race engine PV would be better geared down for less movement but faster perhaps. Random thought.
If your sleeve is out you could preport the transfers a bit and finish transition in barrel. Where are floors at BDC wrt piston?
Don't you look at my accountant.
He's the only one I've got.
The power valve spool has to be really close to the piston face to have any effect.having the spool 3mm away from the piston isn't helpful
My neighbours diary says I have boundary issues
Valid and that's the theory we were working with.
But.... We were a little shocked when we did comparison fully open and fully closed.
Gut feel was that when closed it disrupts the gas flow out of the port (rather than stop it completely). Same for the returning wave at the small cost to the piston face (but never had a issue) - but it never did more than 25-30 hrs in total.
Ideally, the cylinder would be offset bored closer to the power valve. But I guess that would have created other issues...
gprs new works rider owns the track now![]()
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