Pawel Rzedzicki

Hello!!!

I'm from Poland. I can buy 22B or 23B. Only these two types of Vess are available here. I have DL50 on standard exhaust and fly 3D. Which prop should give me better overall performance?

closetguy

My Feedback: (13)

23-b might be a little to much for the DL for fast spool up for 3d.try the 22-b

liquid_TR

any good prop (such as JXF-XOAR, NX, Mejzlik..) close to 23x8 load will give you nice 3D static thrust values.

tlandon

My Feedback: (15)

50cc best Vess prop is the 23B. Tryed them all, thats the best all around size.

Pawel Rzedzicki

Thanks, so we have a winner

liquid_TR

BTW, forgot to mention;

I did a static pull test the other day, on a DL50 with JXF 23x8 prop (on a 2,16m YAK54): 14,5 kg of sustained pulling force!.. very nice..

thevirginian

I tried them both. Broke the motor in on the 22B and switched to the 23B after that. On the 22B the motor was screaming over 7000 (7300 to be exact). The 23B naturally slowed it down some, but had a better pull, in my opinion. Now I fly a Mezjlik 23x8 and love it.

Junaid Ali

What rpm where you getting on 23 x 8 in prop when you ran the test. I have recently completed a Magic hand Cap 232 and I am using a 22 x 10 wooden JXF prop, temperatures are very high so havnt leaned it to peak, its giving me 6600 RPM. The plane was tail heavy so I had to add about 1.75 lb nose to get the CG right, now I have a extremely heavy 19.5 lb model at hand and I am not getting enough thrust for IMAC. What kind of RPM or Thrust can I expect at 600 ft ASL/105 F. Suggestions and help will be appreciated by all flyboys.

Junaid Ali

liquid_TR

you should be getting around 300-350 RPM more with 22x10 JXF. dont run the engine rich. - just allow proper air flow for the engine and it should be fine.

The rpm reading with 23x8 JXF was around 6300-6350. seal evel

Im using 32:1 Castrol 2T mineral oil.

If you want to lighten your model, I suggest move all possible stuff as forward as possible, use a heavy aluminum spinner, put longer stand-offs for the engine. this way, you can remove some dead-weight.
Then, change your main and rear landing gears to carbon fibre, get some light-weight wheels, use smaller capacity batteries. Remove any unnecessary stuff out of the airframe.

At the end, the plane will transform into a new beast..

Jake Ruddy

My Feedback: (40)

Better performance is subjective.

a 22B will give you better raw pull out of a hover.

23B will give you lower throttle needed for rolling harriers etc. edit: This doesn't quite make sense. What I meant is you will need less throttle input with the larger prop to keep the plane rotating and the nose up.

liquid_TR

What does 22B roughly translate to? 22x8 or 22x10?

closetguy

My Feedback: (13)

EXACTLY,all you half to do is a little tail touching and you would know the felling.
also the 22-b would be like a 22-8,i like the 22-a,great spool up and yanks the tail off the deck.

nonstoprc

My Feedback: (90)

You need to cut down the weight on the tail, period. 19lb is way too much for IMAC with a 50cc engine.

Junaid Ali

I have managed to get rid of some of the nose wt by a little shifting, going to fly in the morning with a 22 x 8 and see how she flys. Thanks for all of your inputs. Junaid