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Medalion 15 Plastic Venturi Babe_b10
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"Traded an electric charger for this "Complete" (original) Cox Thimble Drome Olympic .15 engine. Right corner is photo as received."



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Post  FLOYD CARTER on Sun Apr 26, 2020 7:04 pm

I seem to attract problems. My Medallion 15 glo head measures 5 Ohms cold. It will glow OK with about 12 volts to draw 3 1/2 Amps. Obviously a bad glo head. The wire is crimped, and probably the crimp not good.

More serious problem. The plastic venturi housing is leaking around the big end. (next to the crankcase). When my Cox all purpose tool arrives, should I just tighten the front nut, or should I use a sealant? Or replace the plastic housing?
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Post  Levent Suberk on Mon Apr 27, 2020 4:04 am

Do you see a crack on plastic carb body? If it is cracked then you must change it. If it didn't crack then need to be tightened by collet. If you have .15 tool then disassemble collet and smear a little silicone sealant into big end and reassemble it.
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Post  Cox International on Mon Apr 27, 2020 10:47 am

Sorry about your misfortunes and the Cox .15 Medallion carb bodies are available here: https://coxengines.ca/cox-.15-medallion-carb-body-oem.html Smile
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Post  ticomareado on Mon Apr 27, 2020 11:30 am

Sometimes they are repairable with a thorough cleaning and a binding of un-waxed dental floss and JB Weld.
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Post  ffkiwi on Tue Apr 28, 2020 5:15 am

But at the same time DON'T overtighten the collet either-this can cause the moulding to distort at the back end and become slightly oval rather than circular-which either starts a leak or makes your existing one worse...and if really overdone can cause it to crack or split along the crankshaft axis...

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