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| Another Halo |
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| Darren:
Simply brilliant :bow: :bow: :bow: |
| Bernd:
Finally a runner all right Kirk. :thumbup: You deserve a few of these :ddb: :ddb: :ddb: :ddb: I'm sure once it's run for a while the engine will take less pressure. Bernd |
| NickG:
Nice 1 kirk, a brilliant project and brilliant result! you must be chuffed. Nick |
| kvom:
I spent the afternoon rethinking and then remaking the manifold. Here's the result: The body, made of 12L14 steel is actually two pieces. The first piece I turned as a disk 2.000" in diameter, .5" thick, and bored out to 1.250". I then used a grooving/cutoff tool to turn a groove into the outside .25" wide and .35" deep to provide the air channel. The second piece I turned 2.25" in diameter and bored .199. I then pressed piece one into the bore of piece two. Then it was off to the rotab to drill the mounting holes and holes for the air barbs. I mounted it to the engine, and while it's not 100% airtight at the pressed seam, it's a lot better then before. Unfortunately, the engine then decided not to cooperate by running at any pressure. Seems the crank screw had loosened up again. Arghh! So next shop session I'll adjust the timing again and tighten the screw. I also want to check all the valve again as I didn't seem to feel proper airflow from every exhaust port. |
| kvom:
I spent a while in the shop this afternoon getting a start on the base. One lesson learned was that when cutting a deep slot with a small endmill, clearing the swarf as it cuts is a good idea. Cost me a 3/16" carbide endmill to learn this. |
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