I just made a 48" wingspan delta wing foamy, I have an OS26FS I have mounted on it, I don't know what size prop will work best in this application and I need HELP! overall wt. with all gear installed is 3 1/2 lbs. I have posted this same inquiry in several forums with absolutely NO response, someone out there has to be able to help out of the masses of people who use this site .thanx in advance ericthetree.

From OS:

....Suggested Prop(s): 9x6, 9x7, 10x4, or 10x6

I'd go with a 10-6 and see what happens.

FBD.

thank you, Dave. I have a 10/6 and I'm headed for the garage right now to try it out. do you think I should set this bird up with an elevator and ailerons. or would a flaperon set-up work best?

Speaking from Saito .30 experience I agree. MY Saito .30 was on a heavier Sig LT .25 with a nose gear, I alternated between a 10x5 and a 10x6 depending on the grass length where I was flying at the time. I used Graupners in both cases. Those nice wide blades really work well with fourstrokes.

I believe elevon would the radio option for that.

On a small winspan like that, I think I would go with flaperons....

....it's gonna be real touchy either way. Set your alighnment as good as
you can by eyeball....and keep the throws small. That thing will be a handfull
till you get it trimmed out. If you have expotential....set it at 40% negative at first.

Dave.

Thanks, Hobbsy....looks like we're on the same page....[sm=thumbup.gif]

....and I think "elevons" is the correct term.

Dave.

Dave, do you think he get up elevator using Flaperon instead of Elevon? I don't think my radio would give you that on Flaperon. Although I never tried it.

i'll try the elevons and let ya'll know how it went, just back in from garage and the 10/6 seems fine,nice idle, good full throttle.thanx again for the help guys,ericthetree.

if it flies well I've got an OS40FS I'd like to try next .do you think this would be too much engine?

the Tx I use is a T6XAS by futaba,I believe it will be fine for this application.

Eric....take what you learn from this one, and build a bigger and better one
to put the 40 into. [sm=thumbup.gif]

I use the T6XAS myself....lovely radio.

FBD.

will do

any suggestions on size of next one for the 40

....about 45" is good....look at this....

http://www2.towerhobbies.com/cgi-bin...?&I=LXX403&P=7

Hi!
10x6 is too big prop! 10x5 is the size to used for the OS Fs .26 using 5-10% nitro.
Regards!
Jan Karlsson
Sweden