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| V-twin engine from scratch - yet another interpretation of how (not) to build a |
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| sorveltaja:
'Broaching' in progress: Above picture shows also my hi-tech dividing head, that is attached to lathe's chuck. After all, with these equipments the process is grande tedioso, allowing mighty 0.05mm(0.0019") cut to be taken at a time. I just might get decent gear as a result. If not, there is a lot of other options to test :dremel:. |
| NickG:
Thanks, I get it now! Great improvisation in the lathe there. :thumbup: Nick |
| sorveltaja:
Ruined gear, and the new gear: Cutter wasn't centered quite right, so new gear looks more like circular saw at the end, than gear. It meshes less than well with bigger gears, but I'll use it anyway. Generally, that broaching seems to be a good way to make gears, assuming that the required adjustments are correct. |
| sorveltaja:
Cylinder liners after some smoothing: They both have still some deep scratches and spots, that would take ages to get rid of. But, I'll trust that the same half-baked bore finish works on this project just fine, as it did on previous one. In the photo are the piston blanks also, that need to be machined to size. |
| NickG:
I agree, a few scratches in the bore isn't going to harm anything, it'll probably wear in quite quickly. Some people go to the nth degree lapping and honing to mirror finishes but I'm yet to see any evidence of the benefit to be honest. You know it works from previous experience and I do with other engines so why change it, presume there's no luberication system as such so it's not like oil is going to come past the pistons into the combustion chamber. Nick |
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