Agree with Matt. Yesterday i ran a speed passion 5.5 on 22x81 on a 33 pulley and had no issues, in fact i ran around for another 3/4 mins after the A final to try some tyres and only pulled off because i wanted to go home! Indoors however i do run a cut down under tray, either with holes reamed out (looks like a cheese grater) or yesterday i cut the centre out and ran the edges. To be fair, the difference with a full undertray and the one i ran yesterday was only 10 degrees at the end of the run, I wouldnt of been close to thermalling with a normal undertray anyway.
Id be thinking speedo.
Si
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Schumacher, Hobby Wing, Thunder Power, Anderson, Sanwa, Trishbits, P-Dub Racing, Rudebits, Inside Line, Nuclear RC, RC Domination, RPC
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