Alex Wong1697456877 Posted January 6, 2006 Author Share Posted January 6, 2006 I think that's why you have the "clunky" box Alex, I suspect the standard 6 speed wouldn't be any stronger if it was used as hard as that But how else are you supposed to drive on track?? I think I'm quite gentle with the changes which is why I struggle a bit with the dog sequential box. Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted January 6, 2006 Author Share Posted January 6, 2006 Ahh - Blatmail up again - Brent, YHM. Link to comment Share on other sites More sharing options...
paul jacobs Posted January 6, 2006 Share Posted January 6, 2006 Alex, that raises an interesting point. Any track day driver has to ask themself whether they want to drive the car as if they are in competition, ie wringing the neck out of it, oblivious to wear and tear, so that a competitive advantage can be gained, or whether a track day is fun, and why trash the box, clutch engine and brakes just for the sake of going at 10/10s instead of 9/10s. Breaking a little earlier, slowing the gearchange by a microsecond and clean changes instead of using clutch slip, up and down the box. I guess that overall lap times would be less than a couuple of seconds adrift, even if timing was allowed, which it isn't at most track days. If the descision is to drive at 100% then why not actually race and get the satisfaction [or frustration] that that involves? Ha, sounds like another topic for the Friday arguement 😬 Graham, I probably won't be in a position to do a back to back test, unless the BGH 5 speeder proves to be the wrong choice or breaks, I just feel that the ratios of the 6 are all wrong for a torquey powerfull engine, with, primarily, road use in mind. I could be wrong, but several have already gone down this route very succesfully, Rob and Brent come to mind. Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted January 6, 2006 Author Share Posted January 6, 2006 How I drive depends on who's in front and who's in my mirror! Actually, I've been driving like a total nancyboy of late which is why I was thinking of making the car more road friendly. Link to comment Share on other sites More sharing options...
F355GTS Posted January 6, 2006 Share Posted January 6, 2006 I read this thread with interest as I've no doubt I may be in the market soon, Brent I could well be another Customer! I am currnetly running a Quaife 5 Speed semi Helicoil 5th with (French?) Quaife coated steel syncromesh rings fitted by R&R and with 18months of track use the rings haven't broken and the changes are very smooth, with the bronze ones Phil was changing them every few months!. He suggested that the 6 speed wasn't really strong enough for my car with the previous spec engine but others here seem to have a different view, may be the way to go for me, I'd love to have a quieter box even for track Mark Link to comment Share on other sites More sharing options...
I.Mupferit Posted January 6, 2006 Share Posted January 6, 2006 Alex, I seem to be having problems with sending mail at the moment but will keep trying so please be patient...........it will get to you eventually Mark, I will no doubt see you at some point soon so will chat with you then. Brent 2.3 DURATEC SV Reassuringly Expensive R 417.39 😬 Link to comment Share on other sites More sharing options...
F355GTS Posted January 6, 2006 Share Posted January 6, 2006 thanks Brent, I'm away skiing for a week will catch up when back Mark Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted January 6, 2006 Author Share Posted January 6, 2006 No prob - Thanks. Link to comment Share on other sites More sharing options...
I.Mupferit Posted January 6, 2006 Share Posted January 6, 2006 At last, you should now have mail. Brent 2.3 DURATEC SV Reassuringly Expensive R 417.39 😬 Link to comment Share on other sites More sharing options...
Paul Gibb Posted January 6, 2006 Share Posted January 6, 2006 Also watching this with interest. I have no experience of BGH or Caterham 6 speed but I have run alloy maincase Quaife straight cut dog engagement boxes in my last two Vx Caterhams (220 & 250+bhp) with no breakages. Synchro gearboxes proved unreliable in both cars. L7FUN has been running the 6 speed dog box with seq. drum mechanism since March 2003. No problems apart from occasional false neutrals during downshifting from 4 to 3 last year were resolved by the replacement of a bent selector fork & drive disc in June. The ratios of the 6 speed do seem to suit my engine fine and the box was very carefully chosen with reference to dyno sheet & gearing charts etc. A 5 speed with longer 1+2 and 3,4+5 equivalent to my current 4,5+6 might have been as good but it didn't feel so in my previous car (admittedly with very different engine spec). If returning to H pattern I personally would choose dog engagement or wait to see how the Caterham 6 speed boxes fair in the 260CSR's this year before taking the plunge. L7 FUN Link to comment Share on other sites More sharing options...
Paul Gibb Posted January 6, 2006 Share Posted January 6, 2006 BTW changing rear tyre diameter ie ACB10 or slick from 20" to 22" is equivalent to change in final drive (ie 1:1 to overdrive top) or diff. L7 FUN Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted January 6, 2006 Author Share Posted January 6, 2006 sorry Brent - no mail yet. Link to comment Share on other sites More sharing options...
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