Also the super monza questioned was ridden by a road lad and it was geared with a tv200 gearbox for touring. Its not a comparison although this bike in question had just done the 6hr in spain.
Craigs gearing was that too,LI150 with 19t with either 46/47 crownwheel.Think it 4.4 or 4.2 even . I was shocked too. Hey,6hr endurance.....thats like a blast up to Bridlington which so it should do or id have mi money back!
Nothing you could do on the way to a rally compares to what you do to an engine on the racetrack. Some people will not believe that, but that's just because they've never been on a racetrack. I'd say that a proper race scooter would stand a very good chance to be an extremely reliable road bike.
Dyno or not: Tuning a twostroke is knowledge/experience, and once you start trying to push the limit it's applying the two plus a very good portion of trial and error. You change something and evaluate whether it was an improvement or not. Once you get past a limit the gains are not very large, say 0.3BHP for instance on a 30BHP engine. I for one am unlikely to "feel" that sort of difference with the seat of my pants. A combination of maybe 10 changes may well give you an increase of 3 BHP though, which is definitely worthwhile. On a dyno it takes you a coupe of minutes to test alterations. On the road it takes much longer (if it's possible at all). So you end up trying more variations, and you learn more in less time. Which in the real world means you build faster engines.
Would agree with that amazombie and watching somebody that knows there stuff looking at what appears to be a good power curve and then disecting it at 500rev intervals under load putting an engine through its paces then knowing what to do to get more power is amazing and at that level of tune it is what sorts the top tuners out, as said, sometimes having to make multiple adjustments to get a couple more bhp without blowing the motor !!!
Post by jonnysnatchsniffer on Nov 28, 2011 13:06:03 GMT
well i thrash the fuck out of mine on the road, cos thats what its built for, i think a racetrack would be more forgiving on other components of the scoot tho as it wouldnt have to deal with massive fucking potholes, gravel, salt and shit, dodgy fuel but saying that i doubt id stay on it long enough to blow it up
Maybe charley will do a group 6 one day... Guy is only a little older than me. His bike weighs 50lbs less than charley's grp4 with much less wind drag.. Guy's other prepped machine run by Doug Turner is lighter than my vespa so it shows how light they are. Its wind drag that kills a grp4 over a grp6(apart from the obvious unrestricted mods you can do)
Ryan is a special talent make no mistake. On a similar bike I would like to see the race. Ryan has raced against CE several times and beat him once on his Dragster grp6A auto. But Charley has won every other time out of maybe 4 race weekends apart from the broken hub race. I think Ryan would have won here.. Donny is sooo big that the weight and wind resistance as well as the drive you get from a reed valved motor low down off the corners gives it a massive advantage.
re the sprint times.. they were geared to do those times. Not knocking them at all.. in fact the opposite! It was awesome. Only 4 machines broke the 100mph too and 3 of them were Bsso race bikes . Mine was massively overgeared for the 1/4 and was only just maybe 2 seconds or so into 4th at the 1/4 marker which I did in 14.15 at 94mph. But launching a track built smallframe is hard. I am crap at the starts tbh ;D
Yes, the other times Ryan was on Craig Bewey's 70cc Zip!