Author Topic: Tyre pressures  (Read 1965 times)

Offline Sav

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Re: Tyre pressures
« Reply #15 on: 28.03. 2019 09:57 »
Continental tubes my group had were very porous and needed air every couple of weeks.

We've all switched to Michelins and problem has disappreared
1961 A10SR, spent a fortune at SRM
1961 A7SS, finally the right green
2011 New addition 1937 Empire Star, twin port, high pipes. Turned out to be the most unreliable bike I have handled.
2017 finally found the liner/barrel were flexing and causing all the overheating/nipping up. Early B33 barrel fitted and it's reliable at last!

Offline muskrat

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Re: Tyre pressures
« Reply #16 on: 28.03. 2019 10:57 »
G'day Slymo.
At those pressures mine would handle like a wet sponge! Which Avons are you running?
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online RDfella

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Re: Tyre pressures
« Reply #17 on: 28.03. 2019 12:00 »
RGS-Bill - and Haynes tell us to shim both sides of the crank! And now I find modern Haynes manuals next to useless as clearly whoever writes tham hasn't done the work suggested.
As for tyre pressures, there are a lot of variables to take into account. I've found bigger rims (eg WM3 instead of WM2) need less pressure as the tyre is less rounded.  Run 20/20 on my M21 (rigid) and just a tad more on the GF (S/A) My Firestorm is 36/42 so I'm slightly surprised at 30 being suggested for the A series. Although years ago I recall running pressures about 10psi above normal increased grip for rally cars on tarmac.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Online Slymo

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Re: Tyre pressures
« Reply #18 on: 29.03. 2019 21:40 »
Erm no actually re reading my post 30 was a typo, Ive got 34 in the back but do have 22 in the front. No problems with cornering but then I didnt really notice that they were down in the low teens prior to the top up other than the squealing. Also I inflated them at the local petrol station and that guage has been thrashed, dropped and driven over so Its at best an aproximation of inflation.
NZ