3D prop for a O.S. 91 fs

[Goodie_2_Shoes]

G'day everyone, I know that this is not a giant related topic though i need some help. I have a O.S. 91 fs on a S2G Extase .60 size 3D plane. I was just wondering what is a good 3D prop for this engine?

The plane itself probably weighs somewhere around 2 to 3Kg. It is seriously lacking in vertical performance. I have tried about five different props ranging form an 11x6 APC to a 13x10 APC. The 13x10 seams to work the best at the moment at 10,500rpm in terms or veritcal performance. Though it is still not enough to pull vertically out of a hover. Any help would be greatly appricated.

Cheers

[flyin4fun]

APC 15X6 works the best for me on my U Can Do .60 ...I also have a OS 91 FS

[Goodie_2_Shoes]

Thanks, a 15x6 seams huge. That doesn't put too much load on the engine?

[Yak-Fever]

Try a APC 15 x4 Wide, 3-D Prop...Worked great for me, I tried lots of props, this was the best for thrust and spool up....hope this helps....Happy flying...

[Jag01]

I am running a 15x6 on a 90 Super Tigre in a 3d fun fly.

I tried the 15x4 wide however found that the engine spooled up quickly but the aircraft would not accelerate comfortably out of a hover or high alpha position. The 90 has the torque to pull slightly more pitch and still not suffer from slow acceleration.

cheers,

Jeff

[Geno]

My dad has a .91 in showtime 50 swinging a APC 14x6, we tried APC 15x6 or 15x4. Also tried a 14x4, found the performance was the best with the 14x6. JMO

[heligrom]

I like 15x4 W from APC but im going to try a 14x6 also.

[Marko 08]

I had a .91FS on a 3D plane and the APC 15x4 W IMO was the best. Went really well good power, fast spool up, was awesome. Hope this helps

Marko

[ConRadical]

Back in the day when the U-Can-Do came out i ran a 15x4W (wide) and it was awesome.

[Goodie_2_Shoes]

Cheers everyone, I'll grab a 15x4W sometime this week and give it a test flight and I'll let everyone know how it went.

[Goodie_2_Shoes]

Success! The 15x4W works a treat. I only got one flight in, as mother nature was working against me. The wind sock was at 90 degrees and at one stage my plane was flying backwards, so bring on the weekend! Thanks everyone for helping..

[tackdog]

Yeah the wind is a tad average here at the moment. I wonder if Luke maidened his new electric machine on the weekend. Hopefully the throws were large enough


Once my engine gets back, Im off to the field for a maiden on the Yak....

Are you heading out this weekend mate?