Supporting > Engine Ancillaries
Distributor cap wire boots video
gbritnell:
I was making boots for my radial engine plug wires so I thought I would make a short video.
http://www.youtube.com/watch?v=Q3Vp-KOG048
RReid:
That is a very neat, practical, and simple method of making cap boots. Thank you for posting it, George. :ThumbsUp:
petertha:
Very nice, George. Thanks for sharing. Maybe you did some prior experimenting before landing on Garolite G-10 FR4 for the distributer cap? I'm quasi-aware of its temperature & dielectric properties. And obviously its working for you. Did you try other materials & conclude they were unsatisfactory for one reason or another?
Reason I ask is I'm familiar with composite molds. Making a shape from say 3DP & casting a distributer body off molds from this shape is do-able in my shop. Now it may serve no net advantage in the end but the option may be there. But there lays the crossroads - type of epoxy, glass filler etc. I have seen pics of running model engines with clear (some kind of plastic) maybe to help monitor spark issues? Anyways, just curious about your comments in this regard.
gbritnell:
When I was new to making distributor caps Coles Power Models was still in business in the early 80's. In the materials list for the Holt engine they listed the Garolite for distributor cap material. I bought a piece and used it for several engines, with good luck. Since the early days I have used Delrin, also with good success. Steve Huck of Little Demon fame uses a clear material, I'm guessing some type of Lucite or Delriin. Other than those materials I haven't tried anything else. Maybe someone could add their thoughts.
Niels Abildgaard:
Thank You George for writing and explaining.
I am still dreaming of pistons with sparks.
How close do You make the air-gap in distributor and why?
Please?
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