Re: TS1 245 38bhp / 26.14 ft.lbs
Posted: Sun Mar 31, 2013 9:04 pm
yes?tony wrote:6 minutes ?
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yes?tony wrote:6 minutes ?
At what point would you normally take the peak power figure of this engine? The 40HP 'in the hope of keeping it alive' or the figure prior to it being backed off?Darrell Taylor wrote:ive backed the motors off to approx 40 in hope of keeping them alive
Most races are longer than that dan. Unless you bin it or suffer a problem. Maybe if they only did 6 laps of Lydden as the lap time is generally under a minute. But cadwell for example the general lap time is around 2.05 with a 6 lap race that's twice as much. They end to try to run a race around the ten to twelve minute mark in the vmcc.drunkmunkey6969 wrote:yes?tony wrote:6 minutes ?
Adspeed wrote:At what point would you normally take the peak power figure of this engine? The 40HP 'in the hope of keeping it alive' or the figure prior to it being backed off?Darrell Taylor wrote:ive backed the motors off to approx 40 in hope of keeping them alive
tony wrote:Most races are longer than that dan. Unless you bin it or suffer a problem. Maybe if they only did 6 laps of Lydden as the lap time is generally under a minute. But cadwell for example the general lap time is around 2.05 with a 6 lap race that's twice as much. They end to try to run a race around the ten to twelve minute mark in the vmcc.drunkmunkey6969 wrote:yes?tony wrote:6 minutes ?
You are not wrong there Darrell, heat issues are the devil for these machines. But one thing is for sure, you have got more power out of your machines than any tuner (especially when taking RPM/spread of power and available torque into consideration). No one else is publishing power graphs at 47bhp. Figures in the 47+ bracket are very hard to come by, especially at sub 10k RPM....so good for you. If you solve the heat issues your engines will be a formidable weapon on the track.......Darrell Taylor wrote:[ at these horsepower levels on an aircooled motor im probably finding out for the first time as to whether or not its sustainable at 42 / 45 / 47 i may have to liquid cool
ive just dynoed a late model cr250 with a road tyre fitted that did 43bhp this model had a 100% increase in radiator size compared to the year earlier so shows that they had cooling problems too even at 43 with liquid cooling
drunkmunkey6969 wrote:tony wrote: Most races are longer than that dan. Unless you bin it or suffer a problem. Maybe if they only did 6 laps of Lydden as the lap time is generally under a minute. But cadwell for example the general lap time is around 2.05 with a 6 lap race that's twice as much. They end to try to run a race around the ten to twelve minute mark in the vmcc.
lol....oh dear, Mr Pedantic strikes again The numbers are arbitrary, I was illustrating the difference between a sprint, a race meet, an occasional rider and a year round rally goer, that's is all.
Although its not just Lydden, your own lap times from a 3 lap race at Cadwell below....6 mins 11 seconds.
http://vespasmallframeforum.proboards.c ... hread=1899
RESULT - RACE 20 - EVENT 23
Pl/No/Evt/ Name / Machine / Laps / Time / MPH / Best Lap / on / MPH
1/601/23/ Charles EDMONDS/ Lambretta SX 204/ 3/ 6:09.88/ 63.65/ 2:01.07/ 2/ 64.82
2 621 23 Tony O‘BRIEN Vespa SS 153/ 3 /6:11.13 /63.44 1:58.81 3 66.06
3 667 23 Richard CONNEELY Lambretta Inter 200 3 6:11.69 63.34 1:59.84 3 65.49
4 638 23 Stuart DAY Lambreta GP 200 3 6:12.55 63.20 1:59.46 2 65.70
5 653 23 James CAMPEN Lambretta GP 200 3 6:15.33 62.73 2:00.07 3 65.36..........
I dare say Lydden race times would be circa 6 mins, as would perhaps 3-sisters also?.....but what the hell 6 minutes, 6 laps, 8 minutes, 10 minutes??? It doesn't matter....its not 15 seconds, and its not a full rally season, im sure you get the point.
Always the bridesmaid, never the bride! loltony wrote:Not a bad lap time tho eh dan