Recommended prop size for Medallion .15

poorbs Tue Dec 18, 2012 2:23 pm

Can someone tell me what the recommended prop size and nitro % for a Cox Medallion .15 is, and how does this engine compare to the TD .15 in terms of RPM or power?

Thanks

Jason_WI Tue Dec 18, 2012 3:28 pm

8x4 prop and 25% nitro should get you 13k to 14k RPM on a Medallion 15. My TD 15 Special Mk II will get 16.1k with an 8x4 prop and 25% nitro.

**Admin** Tue Dec 18, 2012 3:32 pm

Here's some charts taken from the Medallion and TD manuals. Those manuals are free to download at the link located in the sidebar on the left just above the Cox Engine of the Month.

Recommended prop size for Medallion .15 Medall10

Recommended prop size for Medallion .15 Medall10

Recommended prop size for Medallion .15 Tee_de10

As for the kind of prop, fuel and location used for the above tests, I can't say. However, a few other manuals say this.
Recommended prop size for Medallion .15 Test_r10

Recommended prop size for Medallion .15 Test_r10

(Race Power Fuel being 30% Nitro, 20% oil with 18% of it being Castor)

Cox International Tue Dec 18, 2012 4:01 pm

poorbs wrote:Can someone tell me what the recommended prop size and nitro % for a Cox Medallion .15 is, and how does this engine compare to the TD .15 in terms of RPM or power?

Thanks

If you are looking for the original Cox 8x4 competition prop, here it is:

http://coxengines.ca/cox-.049-.15-texaco-propeller-grey-8-x-4.html