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Cox Engine of The Month
July-2024
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"ULTIMITE COX 010: it has a clutch, E starter, throttle, exhaust, aluminum tank, aluminum venturi, gearbox with forward and reverse, and now its on a custom drawn and printed stand"
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PAST WINNERS
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"ULTIMITE COX 010: it has a clutch, E starter, throttle, exhaust, aluminum tank, aluminum venturi, gearbox with forward and reverse, and now its on a custom drawn and printed stand"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
OS .25 from eBay, looking for info
Page 1 of 1
OS .25 from eBay, looking for info
I just received this in the mail and wondering what to call it. It looks decent and moves freely. It was listed as an OS fp25 but there is no "FP" marking. Just Max OS .25. It has a small 702 muffler strapped on. Iron, ABC, Schnurle...?
Thanks,
Rusty
http://www.ebay.com/itm/os-25-fp-air-plane-engine-/281298190105?_trksid=p2047675.l2557&_trkparms=aid%3D333005%26algo%3DRIC.FIT%26ao%3D1%26asc%3D265%26meid%3D6088282413025774090%26pid%3D100102%26prg%3D1140%26rk%3D1%26rkt%3D1%26sd%3D281298190105%26&nma=true&si=YVSt0ZPpqXUrLbWNjEecTd6bbfE%253D&orig_cvip=true&rt=nc
![OS .25 from eBay, looking for info $_57](http://i.ebayimg.com/00/s/MTIwMFgxNjAw/z/FE4AAOxykmZTOBra/$_57.JPG)
![OS .25 from eBay, looking for info $_57](http://i.ebayimg.com/00/s/MTIwMFgxNjAw/z/0IgAAOxyUgtTOBsE/$_57.JPG)
Thanks,
Rusty
http://www.ebay.com/itm/os-25-fp-air-plane-engine-/281298190105?_trksid=p2047675.l2557&_trkparms=aid%3D333005%26algo%3DRIC.FIT%26ao%3D1%26asc%3D265%26meid%3D6088282413025774090%26pid%3D100102%26prg%3D1140%26rk%3D1%26rkt%3D1%26sd%3D281298190105%26&nma=true&si=YVSt0ZPpqXUrLbWNjEecTd6bbfE%253D&orig_cvip=true&rt=nc
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
Re: OS .25 from eBay, looking for info
Hi, this is a .25 Max R/C.
No ball bearing, plain bushing,
not Shnuerle porting but piston (cast iron ) with baffle.
I bought mine in 1976...
Need a lot of castor oil (20 - 25 %)
Good engine,
No ball bearing, plain bushing,
not Shnuerle porting but piston (cast iron ) with baffle.
I bought mine in 1976...
Need a lot of castor oil (20 - 25 %)
Good engine,
navion34- Gold Member
- Posts : 208
Join date : 2012-09-09
Age : 60
Location : France
Re: OS .25 from eBay, looking for info
Older muffler mounting strap. Muffler mounting is integrated in the casting on newer engines.
Based on Navion's comment, drop the muffler off and look in with a good light and see what the piston top looks like.
Phil
Based on Navion's comment, drop the muffler off and look in with a good light and see what the piston top looks like.
Phil
pkrankow- Top Poster
- Posts : 3025
Join date : 2012-10-02
Location : Ohio
Re: OS .25 from eBay, looking for info
Thanks for the comments, I'll take a closer look. I have an NVA on the way for my other fp25, They probably have the same requirements in that department.
Rusty
Rusty
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
- Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA
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