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Home Model Engine Machinist Forum

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  1. J

    New Tool Holder.

    Hi The tangential tool holder was designed here in Melbourne Australia by an engineer many years ago. I personally have been using one for 40 years. worth every bit of cost in time saving. John
  2. J

    How Do You Make Tiny Copper Washer Gaskets?

    Hi Chaps what I do is turn the washers on the end of copper rod Of the OD of the washer then drill the washer hole diameter then with a correctly ground parting tool part of to the thickness required. Once parted place on length of wire and anneal. Work well.
  3. J

    Flathead hit and miss engine???

    Brian have you thought of a smaller fan on the crankshaft and ducting the air flow to the cylinder and head for cooling. John
  4. J

    Flathead hit and miss engine???

    Using the ignition works fine but wastes fuel as the miss cycle is still drawing in fuel whereas the exhaust valve being held open does not waste an induction cycle . A small point but never the less the ignition cycle still uses the miss cycle to govern speed. An interesting project though...
  5. J

    Deep Drilling In aluminum block

    One of the things missed in the quotes is the drill sharpness! If the two cutting lands are not of equal length or identical angle then the drill bit will not drill an on size or straight hole, always slightly oversize, unless it is only taking a final cut after a slightly undersize drill is...
  6. J

    Time for a new Horizontal Hit and Miss engine

    Hi Brian I would have tried heavier weights on the governor which would cause them to activate at a lower speed. Worth a try before a re design. Drill a hole in them and fill with lead John
  7. J

    Time for a new Horizontal Hit and Miss engine

    Hi Brian, don;t know if you have seen this video but "Blondi Hacks" makes it relative easy. We can't let the fairer sex better us but she is very good and has many sites. John.
  8. J

    V-TWIN---MAYBE V-4

    Why not just run the right cylinder on it's own. Leave the plug out on the left cylinder or just hold the exhaust valve open on the left. This would make it easier to ID the cause of the problem. Is the cam timing identical with the left side?
  9. J

    V-TWIN---MAYBE V-4

    Unless your carb has a throttle Brian a smaller choke bore will give better carburation at a slower speed and the engine will run smoother. Give it a try. Cheers. John
  10. J

    Engine sucks but will not blow

    Have you checked your Valve timing or direction of rotation sounds silly but worth checking the timing for the direction of rotation. If rings and valves are sealing it has to be be something as silly as this. Johwen
  11. J

    Chinese Girl Machinist

    Have you seen the work Of Cherry Hill a remarkable story of a Real lady Model Engineer. Her models are incredible. A Story of her achievements by David Carpenter in book form is worth the purchase www.halebooks.com. does her own photography as well. Makes her own screws rivet chains etc. Worth...
  12. J

    Chinese Girl Machinist

  13. J

    Robs Howell V4

    AUSEE Quality Engineering products in Victoria Phone 03 97915909 are very reasonable and good service. Website is www.ausee.com.au. John
  14. J

    Brian builds a Corliss

    Hi Brian, Why not use a small grub screw in the lever instead of a pin make easy dismantling in the future if it is necessary.
  15. J

    Brian builds a Corliss

    Hi Brian, Looking at your lathe I have exactly the same machine from China except mine has a brand name of "WEISS" I had about 2 years ago an electric problem where my lathe would only turn very slow. Like you looked at the circuit boards all looked good. took the motor to a motor specialist and...
  16. J

    Shop built sparkplugs for model engines

    Brian problem with that configuration is the spark is hidden from the fuel as it can jump at the point adjacent to the insulator for good ignition the spark needs to occur in the open that's why normal plugs are made with the spark gap out in the open so the fuel mix can easily reach the spark...
  17. J

    Shop built sparkplugs for model engines

    Hi Steve, Model engineering is all about making stuff. Some guys make the tooling to make the stuff making spark plug is a synch. With the materials at hand takes me around an hour. all it takes is about an hour and 90% of the time is turning the body and centre electrode the Loctite together...
  18. J

    Shop built sparkplugs for model engines

    You will find several listed on EBAY try your local area it is used in High temperature insulation in many areas such as oven manufacturers. I was lucky here in Melbourne Australia to be able to buy same from a manufacturer about 6 kilometers from where I live. he even cut them to length for...
  19. J

    Shop built sparkplugs for model engines

    Hi Brian, I make my own spark Plugs very simple to make see attached sketch. No fancy materials needed Body 3/8 inch hex length to suit engine 4mm ceramic tube with 2mm bore. Nice square ends, protrude though the end of body .020 inches for spark gap. Centre electrode mild steel turned down to...
  20. J

    Bell mouthed chuck

    Hi Brian if you go and buy a new chuck buy a 4 jaw self centering you won't regret it. And before someone says you cannot hold Hex material you can and very accurately too. square is obvious as well. They are generally more accurate as well. I use one all the time and with truly round material...
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