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Spice
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Spice 's Discussions

Front to rear tyre pressures??
9 Replies

Whats your thoughts on front to rear tyre pressures??Do you run equal all round?More in rear?More in front?ThanksSpiceContinue

Started this discussion. Last reply by David Arnold Apr 29, 2018.

Rotax, does main jet influence low speed?
2 Replies

Anyone know if the main jet on a Rotax has any influence on low speed rpm? If your low revs are around 6000rpm will changing the main do anything or is it more needle for lower rpm? Thanks lots

Started this discussion. Last reply by Vic Roy Apr 9, 2018.

 

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David Arnold replied to Spice 's discussion Front to rear tyre pressures??
"No sorry. I left the sport when the rear bars and new tyres came in. The tyre importer should be able to supply data on the ideal working temp and perhaps even recommended ideal pressures. Regards"
Apr 29, 2018
Daniel Smith replied to Spice 's discussion Front to rear tyre pressures??
"Hey David do you have any knowledge/experience with the Dunlop DFM tyre and their ideal start/working temp?"
Apr 28, 2018
Spice replied to Spice 's discussion Front to rear tyre pressures??
"Thank you all lots for your advice B Fast"
Apr 26, 2018
David Arnold replied to Spice 's discussion Front to rear tyre pressures??
"You are trying to achieve optimum pressures at WORKING temp. This means that you should be checking tyre temps as soon as you return to the in-grid. The difference between cold pressures and working pressures will vary greatly, depending on your…"
Apr 26, 2018
David Kerwood replied to Spice 's discussion Front to rear tyre pressures??
"Track/ tyre/ race length will vary your starting pressure. Just as an example on MG reds you might start at FL13.5 FR 13 RR 14 RL 13.5 Just depends on what your chasing.. You may have 1 corner with high grip and another with a large bump in it..…"
Apr 25, 2018
Glenn Forsyth replied to Spice 's discussion Front to rear tyre pressures??
"More pressures in rear coz more weight in back?"
Apr 25, 2018
Royce Sutherland replied to Spice 's discussion Front to rear tyre pressures??
"Typically start all equal as you want the kart to evenly use the tyres. And that way you don't induce  understeer or oversteer from missmatched pressures. But in higher horsepower classes you may use lower rear pressures as the rears get…"
Apr 25, 2018
Ian Mooney replied to Spice 's discussion Front to rear tyre pressures??
"depends a lot on the track and of course the tyre on a practice day .... put the same psi in all and go out and do a race distance immediately when you come in tack pressures and let them down to the same psi all round. tyre diameter is dependant…"
Apr 25, 2018
David Kerwood replied to Spice 's discussion Front to rear tyre pressures??
"All depends on track you are at.. generally staggered side to side."
Apr 25, 2018
Vic Roy replied to Spice 's discussion Rotax, does main jet influence low speed?
"A Rotax engine (particularly older engines) at 6,000RPM has little power as it is below the power band.  Low revs of 6,000RPM is too low and usually a result of incorrect gearing or driver slowing too much for the corner.    The…"
Apr 9, 2018
Alan Roberts replied to Spice 's discussion Rotax, does main jet influence low speed?
"The main jet will have some minimal influence on the low speed performance. The exact effect however is determined more by driving style and throttle position than RPM. When accelerating from a low speed corner the throttle should be fed in rather…"
Apr 3, 2018

Profile Information

My involvement in karting:
Racer
My race number:
52
The class(es) I race:
Rotax
My best results:
Championships and seeded in Super 1

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