Model for OS26 FS.

Of the current crop of profiles what would suit the OS26?.

Any in the 400 sq in range, like CG Shoestring, Buster, Comic wind, Sig Skyray, Brodak Galaxy and Flitestreak. I have mine oS 26 FS on a Ringmaster.

I run an FS 20 in an arf Flite streak, it works good, best prop is 9.5 X 4.5 apc 9X5 is close, previous air frame was a Veco Tom Tom (RIP) I think the small OS four sttrokes are at least the equivilant to the stunt type 2 strokes of the same size

cheers

Richard

I've got the OS FS.26 in a RM, and it's perfect power for the package, and spins a 9x5 very well. Great line tension everywhere, great corner etc.
Eric Viglione

We have done considerable flying with the small OS 4S engines. My first was a Flite Streak with the .20 and it was great on 52ft, .012 lines – it weighed around 30 ounces. We then put it on a Ringmaster and with Dan Banjock flying, it took am impressive number of firsts in OTS, classic and profile. It weighed around 34 ounces. We then switched to the Surpass .26 and the all around performance improved greatly. Longer lines, better wind performance, etc.
I later fitted the .26 into a kit-built Sterling Mustang profile. I modified it with a wing-mount gear and added 1” of cathedral to the wing – turned out to be the best flying Sterling profile I ever flew, at 30 ounces. Many high placings in advanced against Cardinals and the like.
The next plane I plan to try it on is the Veco Tomahawk. I’ve seen quite a few of these fly with everything from a .19 to a .35 but never with a 4S engine.
From our experience, the rule of thumb seems to be that the small OS 4S engines can be used in place of 2S engines up to .35 on the smaller planes, as described above.
We tried a number of intake systems and the best was the stock carb wired wide open.
Expect to see a twin soon.
Hope this helps.
Bob Z.

I have an OS 26 FS mounted on a Ringmaster. It flies well, but I had to add 2 1/2 ounces of lead to the tail to get the center of gravity within range.

Here are a couple of shots of my Shoestring with an OS26FS. It is a great combination. 10X4 prop.
[photo not recovered: Shoestring.jpg]
[photo not recovered: ShoestringEngine.jpg]
Note on the second link that I made an adjustable throttle linkage from a Dubro Turnbuckle. It didn't need it as I always flew it full throttle, but the concept is nice.