Cold break in.
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1/2A Airplane Engines 049-074
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TOPIC: Cold break in.

Re: Cold break in. 11 years, 7 months ago #120

  • pfinn
Thanks for the very handy spreadsheet! Finally was able to break-in the 074 this past weekend. I had ordered some of the Glowplugboy 24-17 fuel and it came today, but I broke in the engine with SIG 10-20 100% Castor. I ended up using a starter as well after wearing out my fingers. Oh well, "Weakling Fingers" ;). It fired up after 3 seconds with the starter. I ran a few 1 oz. tanks very rich with a moderate cooldown break in between, then began gradual rpm cycling for approximatly an hour thereafter. I used a MA 6-3 for the break-in with 3 head shims. It ran beautifully and I look forward to when it is fully broken in. I recieved my Brodak 1/2a Pathfinder as well this weekend and can't wait to get the 074 in the air.

Thanks to NV for a great little engine and great service on my orders I have placed. I did forget to order the needle for the carb I purchased with the other items, but I will be ordering some more goodies as well very soon.

Thanks again

Phil
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