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Recent content by Gordon

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  1. Gordon

    3D printed bevel gear

    So did it work?
  2. Gordon

    Upshur Twin valve timing

    I am embarrassed to say that I never thought to put the camshaft in the rotary table to position the second cam. That should have been obvious but sometimes I just miss the obvious and go directly to the wrong method. I used your method of using a template and eyeballing it. I am curious as to...
  3. Gordon

    Upshur Twin valve timing

    That has also been my experience. Like you I made a protractor but found that it really did not tell me much with any degree of accuracy. It could not even seem to get the same result on the next revolution. Ignition timing is a little bit more accurate. Mostly it is a matter of just a little...
  4. Gordon

    Upshur Twin valve timing

    I agree. I was just looking for the general range of when valve action should occur. That has been answered. I am not sure how others manage to be so precise in stating when this action occurs. Folks say that they have valve open close at points that I cannot begin to measure. When they state...
  5. Gordon

    Upshur Twin valve timing

    You obviously have far more talent than I do. There is no way that I could begin to hold those kind of dimensions or tolerances. Upshur said that the engine could be built using only a lathe and a drill press so I am sure that he was not thinking in those terms either. Thank you. I will try to...
  6. Gordon

    Upshur Twin valve timing

    Just to keep life interesting the loctite holding the timing gear on the crank shaft let go so I have to take everything apart again and fasten the gear to the crankshaft. Life is interesting if not fun.
  7. Gordon

    hauling a small mill

    In most cases purchasing a single phase 2 HP motor far exceeds the cost of a VFD. Plus there is a good chance that the motor mount will have to be modified.
  8. Gordon

    Upshur Twin valve timing

    Drawings were published in Model Engine Builder magazine #7 and #8. The plans are also available direct from Upshur. Google still works. https://rocketr.net/sellers/UpshurEngineWorks
  9. Gordon

    Upshur Twin valve timing

    OK Thanks for the input. I think that one of the problems with the valve timing is that both valve are actuated by a common cam. This means that adjusting intake also adjusts the exhaust. The ideal would be to make four adjustable cam lobes but that would be pretty difficult in an engine this...
  10. Gordon

    Upshur Twin valve timing

    I am looking for someone who has built the Upshur Horizontal Twin. The instructions on valve timing are very confusing. I presently have the intake valve opening at TDC and the exhaust valve opening at BDC. Due to the design it is not possible to change the timing of the intake without changing...
  11. Gordon

    hauling a small mill

    I have moved milling machines in the past with a boom type wrecker as used for disabled automobiles. It allows you to sling it from the top. If you talk to the company and let them move it at a time when they are not busy they may give you a better rate. Works great.
  12. Gordon

    3D printed bevel gear

    It is too much work to tear the saw down to actually try it but as near as I can tell it should work, or at least work when/if I print it using ABS. The bore seems to be a little tight but it probably can be pressed on or at worse run a reamer through it.
  13. Gordon

    3D printed bevel gear

    Here is the final result.
  14. Gordon

    3D printed bevel gear

    I printed it using PLA and it looks good. I have not tried it on the machine but it looks right. It did indeed take 8 1/2 hours. The Monoprice is a very basic and cheap machine and for the few times I use it it is just fine. It is not like I have to stand there and watch it. It was still working...
  15. Gordon

    3D printed bevel gear

    OK That was easier than I thought it would be. I just rotated it in CURA and started a new print. Looks OK so far. It is going to be working on this after I quit for supper. Says 8 hours and 26 minutes. It is going to work without supervision. Than you. Gordon
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