B50 homepage. This was one of the two bikes sent from the factory in 1973 along with Bob Wright and his mechanic to the USA to contest the ... Wilfried (Jonny) Schmidt´s 572 CCM 1975 ( Germany ) I have had the bike for 1 Year (2002) The rear hub have cracked, and the GFK-tank had two hole´s. 3-speed KTM wheels and front fork

2021年6月30日 · Although the B50MX engine had a reputation for power and durability, young Clews elected to improve upon it, the result being two basic variants of the fabled Beezer single. Perhaps the most famous engine during CCM’s breakout year was what became known as the Big Six. As the name suggests, the engine displaced 600cc — 608 to be precise.

2017年10月25日 · The only real difference is the oil carrying top tube ends at the front of the seat and does not continue under the seat as per B50 and std 73 CCM frame. The oiling system is also vastly improved over the B50/CCM effort during 73.

2014年5月12日 · It is possible to get some decent mumbo out of a B50 without breaking it all the time. Carillo rod, 88mm piston, big mikuni and a decent clutch set up. It all costs plenty of coins though. The gearbox is the weakest link but a 3 speed gearset is said to be much stronger.

Having no access to BSA works engines, Clews made his own extensive improvements to the standard BSA B50 500 cc engine, obtained by breaking up B50 MX bikes. His reputation grew as a builder of four-stroke motocross bikes that were capable of …

2001年3月1日 · CCM undertook an extensive development program on the B50 motor resulting in greatly improved power, weight, and reliability. Developed by CCM were the special casting for the barrel, side...

'CCM/B50 Parts Specialist' PISTONS & CLUTCH PLATES 3 SPEED GEARBOXES, SPLINED MAINSHAFTS FOR THE BSA GEARBOXES, 18 PLATE SIX SPRING ALLOY CLUTCHES, NON TAPER PIN CRANKS, CCM CON RODS AS ORIGINALLY SUPPLIED TO CCM, 4 VALVE PARTS INCLUDING CAMS, CAST BLOCKS TO WELD ONTO ENGINE CASES TO FIT FOOTRESTS ONTO AS PER CCM, MAGNESIUM FORK YOKES AS PER ...

CCM B50 1973 CCM (Clews Competition Motorcycles) CCM is a British motorcycle manufacturer founded at the beginning of the '70s. The company from Bolton, resulted from the collapse of the BSA competition department in 1971. The man who founded CCM was Alan Clews, a successful trial and scramblers rider in the 1960s.

2015年12月27日 · CCM had built their motocross brand from the 1971 concept of ‘Clew-Stroka’ which at heart was an uprated 498cc BSA B50 motor – Photo: Justyn Norek, Turin Clews had built a reputation of making high quality motocross machinery which performed as …

2015年4月26日 · After 'softening' the engine, by now reduced to 500cc, Jack clocked some sensational results, winning 1973's ACU Sidecar Championship and finishing 2nd in that year's British Experts trial.