Delighted to see that Ariel put a proper bearing to support the timing-side crankshaft, unlike the horrid brass bush that Matchless/ AJS used on their singles.
The earlier models used a bronze bush and the casings look very similar, but a ball race is a much longer lasting prospect and doesn't rely on the condition of the oil for longevity.
Very late reply I know, but yes a huge overlap and hand ground and built up followers to suit this one off cam, also home ground. The rebuilt engine revved up like a Japanese bike but the valve springs couldn't keep the followers against the cam, and it hammered like a knocked out big end, so I fitted a standard cam.
There are 2 different types of bearing, a tapered pin with crowded rollers fitted to all 350s and 600 sidevalves. The 500 hunter models with polished steel flywheels take a parallel pin with caged rollers.
Delighted to see that Ariel put a proper bearing to support the timing-side crankshaft, unlike the horrid brass bush that Matchless/ AJS used on their singles.
The earlier models used a bronze bush and the casings look very similar, but a ball race is a much longer lasting prospect and doesn't rely on the condition of the oil for longevity.
Wow! Maybe you could set up a "Black Museum" of things found in engines.
Very interesting video and findings!
I managed to find some useable parts, and other bits I can use as exchange parts.
Ahh, the joys
Peculiar cam huge overlap ? Or do followers come off at different angle
Very late reply I know, but yes a huge overlap and hand ground and built up followers to suit this one off cam, also home ground. The rebuilt engine revved up like a Japanese bike but the valve springs couldn't keep the followers against the cam, and it hammered like a knocked out big end, so I fitted a standard cam.
I'm building a Ariel to but I'm confused choosing the crankshaft rollers
There are 2 different types of bearing, a tapered pin with crowded rollers fitted to all 350s and 600 sidevalves. The 500 hunter models with polished steel flywheels take a parallel pin with caged rollers.
What's the crankshaft roller size
The standard sizes are 1/4 x 1/4, but you need to measure your pin to see what oversize you need. It's easier to just get a complete big end assembly.
Wow men thank you I don't see your comment before but what I mean was de roller or the bearing on de sides of the crank