strtffld9-31

Your feedback is always welcome, click hereCircuit First Second Third Fourth Brands Hatch Club 15/36 19/31* 22/28* 21/24 Brands Hatch GP 15/36 19/31* 22/28* 24/26 Cadwell Park 15/35 19/31* 22/28* 24/27 Castle Combe 15/36 20/31* 23/28* 23/24 Croft 15/36 20/31* 23/28* 24/26 Donington Park short 15/36 20/31* 22/28* 24/26 Donington Park long 15/36 17/33* 22/29* 24/27 or using 'Melbourne Hairpin First' 17/33* 20/31* 22/28* 24/27 Ingliston 15/35 18/33* 21/30* 22/29* Kirkistown 17/33* 21/29* 22/28* 24/26 Knockhill 15/35 18/33* 21/30* 24/28 Lydden Hill 15/35 18/33* 21/31* 22/29* Mallory Park 15/35 19/31* 22/28* 24/26 Mondello 15/36 17/33* 21/31* 23/28* Oulton Park 15/36 19/31* 22/28* 24/26 Oulton Park Fosters 15/36 19/33* 22/29* 24/27 Pembrey 15/35 19/31* 22/28* 21/24 Silverstone National 15/36 19/31* 23/28* 24/26 Silverstone GP 15/36 19/31* 23/28* 23/24 Snetterton 15/35 19/31* 23/28* 23/24 Thruxton 15/36 19/31* 23/28* 23/24 Ty Croes, Anglesey 15/35 20/32* 22/29* 24/27 * The above ratios marked * are now obsolete, though many users still have them, and you may be able to buy them second hand. When buying new, as a guide, the current equivalents are as follows- 17/33=16/31, 18/33=16/29, 18/32=17/30, 19/33=17/30, 19/31=17/28, 20/32=18/29, 20/31=18/28, 21/31=19/28, 21/30=19/27, 21/29=18/25, 22/30=20/27, 22/29=19/25, 22/28=21/27, 23/29=19/24, 23/28=19/23

Tony Wilson. February 2010.

STARTER GEAR RATIO GUIDE

Formula Ford Kent

Hewland LD200 gearbox

9/31 CWP

Avon tyres (22.1 inch dia)

These suggestions are intended only as initial set up for the beginner.