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| V-twin engine from scratch - yet another interpretation of how (not) to build a |
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| sorveltaja:
Thanks for replies :wave:. George, the whole cam/valves- system is to be made following the Hoglet design. Being the pictures that I've seen about it. Currently I'm working on construction of the heads and valves also, to make them as simple as possible. NickG, ohc would be nice, although bit overkill to achieve. |
| sorveltaja:
Besides the valves and heads, I made housing for cams/followers: It's indeed butt-ugly, and I doubt if the gears would mesh correctly with that. Two larger holes are drilled with 10mm(0.393") drill. I should have done them by boring on the lathe :wack:. Anyway, the 10mm holes are for sliding bearings, that'll hold the camshafts. One possible way to correct the timing gears meshing would be to make slightly eccentric bearings, thus allowing minor adjustments. |
| NickG:
Good work S, very interesting build once again. I can't quite see how the gears are working at the moment, what is the small gear on the right hand large one? Nick |
| sorveltaja:
I managed to ruin the small gear, when silver soldering the fastening part to it. Solder flooded to teeth also. I have set of 0.5 mod gear cutters, so it's time to machine the new gear. Never done that kind of job before, but I'll try it with brass and/or nylon. --- Quote from: NickG on March 05, 2010, 03:32:51 AM ---I can't quite see how the gears are working at the moment, what is the small gear on the right hand large one? Nick --- End quote --- Nick, small gear is to be machined off, so that the big gears are similar. |
| sorveltaja:
I tested machining the gears from nylon and brass. No luck, since my mill just isn't sturdy enough for that. It makes horrible noise, and screams for more mercy. Diameter of the gear cutter must be too large for it to handle, as usual small end-cutters work lot better. But anyways, next thing I'll try is broaching the teeth, using that very gear cutter. This time the material is aluminum, being softer than brass, and somewhat more solid, than nylon. |
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