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When a lower octane fuel with a higher volitility is better at controling detonation
VOLATILITY EFFECTS ON PERFORMANCE On the spec sheet issued by makers of racing gasolines, you will see volatility referred to twice; as the 10% point and the 90% point. The 10% point is that temperature by which 10% of the fuel has come over in the volatility test. This is a measure of the fuel’s […]
Lacing Norton Front Disc Rim – 06-1951
Where Do I Start? The picture illustrates a rim pierced to accept a .300 inch nipple with a smaller .281 inch nipple installed. I show this because in the US .281 inch Japanese style nipples often find their way into spoke kits. It is possible this nipple could pull through during tightening, or fail in […]
Lacing Triumph 500 (1967 to 1974) and 650 (1967 to 1970) Front Wheel Rim (37-1230)
Lacing Triumph 500 (1967 to 1974) and 650 (1967 to 1970) Front Wheel (Rim 37-1230) This also applies to the earlier 1963 to 1966 – all nail head hub. You will need: A Triumph rim 37-1230, or equivalent, rim pierced to accept .300″ diameter nipples. A set of 40 spokes a. Buchanan part #Tri712 […]
Harry Woolridge: Specifications 1938 to 1962
http://www.tioc.org/britbike/woolridge38to62.pdf
Boyer: How to troubleshoot a Boyer ignition
IMPORTANT Most Lucas alternator rotors have timing marks, lines on the rotor, in two locations. These are a hold over from the ill fated Triumph Fury and BSA Bantam and its 180° crankshaft. To set up your Boyer you will be using the full advance timing mark that aligns with the timing pointer when the […]
Mikuni and General Carburetor Tuning
by Kevin Cameron Experienced tuners employ many ‘vital signs’ to read an engine’s operating state. Listening to its sounds, hearing it accelerate, dabbing a finger inside the exhaust pipe, and examining evidence on its spark plugs and other parts all help to decide questions like these: is the mixture correct, or is it rich or […]
Lacing Triumph 500 (to 1974) and 650 (to 1970) Rear Wheel (Rim 37-1007)
Lacing Triumph 500 (to 1974) and 650 (to 1970) Rear Wheel (Rim 37-1007) You will need: A Triumph rim 37-1007, or equivalent, rim pierced to accept .300″ diameter nipples. A set of 40 spokes: a. Buchanan spoke kit part #Tri511 (specify Chrome or Stainless spokes and nipples) 10 spokes 7 9/16″ long with 90 degree […]
Removing Triumph Sludge Tube
1 The first challenge is removing the slotted plug from the flywheel. Removing this plug gives you access to the sludge tube. The plug should not have been Loctited and should only be prevented from unscrewing by the center punch on the face of the flywheel. If it was Loctited by a previous mechanic then […]
Triumph 1967-1970 Seat
Tools: Small serrated bread knife to cut foam. Hair dyer or small heat gun to soften vinyl. Rubber mat to keep seat from sliding all over table. Two bags of common spring close clothes pins. Contact cement to glue cover flap to seat pan. A sunny day, a desk lamp with a 150 to 300 […]