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| John Stevenson:
Brilliant Tom. Following this closely but without doing too many 'me too' posts. You are making a nice job of it. |
| micktoon:
Keep up the good work Tom , this looks like it will be as good a post as your last build :drool: Cheers Mick |
| sdezego:
Been a while since I have been poking around so I am a little late to the party, but this looks like another great project! Not sure what you decided, but I can offer my 1st hand experience and opinion on the bearings. Opposing Tapered (Timken) bearings on the Chain side (properly preloaded) and flat rollers on the cam side. With Flat rollers on the cam side, you don't have to worry about expansion, binding, shimming between cases, etc, which would be a major concern. I can't speak for other models, but early Harley's used Flat rollers Until evolution came about in '57 and then used Tapered on chain side from then on out with flat rollers on cam side. This was a major improvement in every singe way (1st hand). I would use either flat rollers on both side (if you want an earlier period correctness) and thrust shims to prevent walk, or Timken on chain side and flat rollers (or bushing) on other but def not tapered on both sides. Are you going to do an oiling system? Oil hole through shafts and flys into crank pin? ..you mentioned more displacement and more RPM than the last, but not how much more, haha :thumbup: Regards, Shawn |
| John Stevenson:
--- Quote from: sdezego on July 29, 2014, 03:23:50 PM --- I can't speak for other models, but early Harley's used Flat rollers Until evolution came about in '57 and then used Tapered on chain side from then on out with flat rollers on cam side. This was a major improvement in every singe way (1st hand). Regards, Shawn --- End quote --- A simple oilite bush would be a major improvement on a Harley. :lol: :lol: :lol: |
| OKTomT:
thanks for your input guys Shawn I am going with tapered roller bearing on both sides and splash lube. I have made a little progress on the crankcase . Welded in boss and drive side supports, bored the bosses to fit the bearings , added hollow dowel pins , bored the holes for cylinders. |
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