"With friends like this............I feel blessed!" My new engine.

Does he need anymore friends? Nice engine.

He also owns a hobby shop.

Yep, Sportsman .15! Really nice collectors condition!

Admin wrote:Yep, Sportsman .15! Really nice collectors condition!

Collectors condition? I've been think of a plane to build and fly it.

nice condition. The only thing missing is the spring starter. If it truly is new it be best to sell or trade for a runner. But that's the collector in me talking. Avoid electric starters on this engine. There isn't a thrust washer used between the case and drive plate.

If you do run it be sure to sign up for the CEF loaner 15 piston reset tool. You're going to eventually need it.

You can ebay source by watching for a spring starter to show up. Some came with aftermarket exhaust throttles if you want to go RC. Can source a TD .15 spinner nut for a elect. starter too.

Here is pic for reference

Nice !! , Duke if your not a collector then he probably intended on you to fly /run it ,, Nut were you get that lf. hand spring for yours ? Eric

These springs show up on ebay from time to time as OEM parts I do deep searches looking for all Cox related products as some folks don't list in the right category. A spring this size is neat to operate lol first time I loaded that big prop up was a real treat and the second and third and so on.

Jason_WI wrote:nice condition. The only thing missing is the spring starter.

....and my pocket around it...

I'll have to find a starter spring for it.

Getback- your right, he didn't give it to me to look at.

I wonder what plane I should match it up with? My first thought would be the Sig Akromaster. Maybe a Flying Clown?

I might have some parts for that motor . I'll check and post back tomorrow .

Mike1284

Do you guys think the Sportsman would fly a Jr Ringmaster? I usually fly them on an OS 15FP.

duke.johnson wrote:Do you guys think the Sportsman would fly a Jr Ringmaster?  I usually fly them on an OS 15FP.

I was hoping to learn something and be able to answer your question, but I'm still not sure. I started looking at mh-aerotools.de and then Sceptreflight.net, but can't find any good power ratings.

I did see one report on the slightly more powerful Olympic .15 claiming .287bhp@16,500 rpm. And .72bhp/ounce. I think both are pretty impressive engines. My guess is yes, it would pull the Ringmaster through loops and wingovers. The smaller but similar designed Space Hopper .049 is said to be nearly as powerful as an early Tee Dee .049, if that's any sort of clue. It's hard for me to believe the Sportsman can out-pull an OS .15fp though. The LA .15 has .410bhp@ 17,000 rpm.

That's all I've got. Not much help though.
Rusty

http://www.sceptreflight.com/Model%20Engine%20Tests/Cox%20Olympic%20and%20Sportsman.html

Link will show it's power I have some Cox props made for the Sportsman they had them pitched for a CL plane.
Props are  6x6 for a CL Comanche
Year 1959:
8x4 at 13k
8x3 at 15k

Modern props at say 15% Nitro:
7x5 APC 14.6K (guess)
7x4 APC 15.8k
Olympic puts out an extra 500+ rpm in general as per the link.

Check out the weights: Shown with the Cox 6x6
7.4oz  vs 4.72oz (less without the throttle)

So long story short. Maybe

duke.johnson wrote:So long story short. Maybe

Haha, yeah, you said it better than I did, with a lot less words.

Hi Duke,

Found a spring for the .15 along with some other parts . I have 2 needle valves and springs #1109 ,1 reed valve #1108 , 1 reed retainer#1107, 1propscrewand washer #1119 and what could be a muffler for the .15
but missing the spring steel part that goes around the out side ( controls exhaust flow and noise ).except for the muffler and spring everything is in the original packing envelopes . I would be willing to sell or trade .

Mike1484
M.E.C.A.4379