Search found 6 matches

by AusMecham
Wed Apr 04, 2018 1:50 am
Forum: 2Stroke Tech
Topic: Gordon Blair 2T Design.
Replies: 4
Views: 4678

Re: Gordon Blair 2T Design.

Interestingly in Blairs book he claims to have seen chambers prior to MZ using them.
I think it was Montesa he cited.
by AusMecham
Wed Apr 04, 2018 1:37 am
Forum: 2Stroke Tech
Topic: Boost Bottles
Replies: 16
Views: 21069

Re: Boost Bottles

Hey AusMechem. You say he got it a bit wrong in the video but don't tell us how. I would be genuinely interested in knowing where he got it wrong. I'm not having a go at you, just looking for more detailed info. Cheers Where do I start. For one thing, Intake lengths are not designed to be tuned to ...
by AusMecham
Mon Nov 20, 2017 9:34 pm
Forum: 2Stroke Tech
Topic: Gordon Blair 2T Design.
Replies: 4
Views: 4678

Re: Gordon Blair 2T Design.

Gordon Bennet ! Gordon Jennings. I wonder what this thing does book. Read it several times. So much measuring, guessing and then theorising. And then gives you a tune length forumla with the guts of it hidden away to produce an imperial value in inches. Magically jumps from ft/sec sonic velocity to ...
by AusMecham
Mon Nov 20, 2017 7:23 pm
Forum: 2Stroke Tech
Topic: Boost Bottles
Replies: 16
Views: 21069

Re: Boost Bottles

All it does is improve low speed carburation, for a city ride it could help with economy, slightly.. Nothing to do with Helmoltz resonance or compression and expansion waves. The RD LC350 had a balance tune, same deal. In the 80's I welded new intakes on an LC 350, stuffed YZ, manifolds, 6 petal ree...
by AusMecham
Tue Oct 10, 2017 8:45 pm
Forum: 2Stroke Tech
Topic: Flow management through reeds
Replies: 22
Views: 10323

Re: Flow management through reeds

2 cycles to fire up thats all, magneto CD ignition more but battery powered induction ignition that provides full energy from 1 RPM upwards such as I had on my racing RD350LC moded ignition, 3rd compression hump is go on a racing push start. from engine off, not primed. Discovered this was a benefit...
by AusMecham
Tue Oct 10, 2017 7:55 pm
Forum: 2Stroke Tech
Topic: Boost Bottles
Replies: 16
Views: 21069

Re: Boost Bottles

I watched that recently myself. Yes very well explained for the layman. It is, albiet hit and miss. Matt is an engineer not a mechanic. Like most they use basic physics and engineering principles to reverse engineer how engines work, however any seasoned mechanic knows that often fails because not ...