I have been testing a few different props lately and wanted to share my results with you. I tested these props on a Byron AT-6 running a Zenoah G-62. The results are shown below.





TBM.............................................To p Flite............................................. .... Bolly

22x10............................................2 2x10.............................................. ......22x10

RPM's.........6330................................ ............6900.................................. .....................6750

Weight.......4.5 oz..........................................4.0 oz................................................ ......4.6 oz


The TBM and the Bolly prop seem to unload and pull about the same in the air. They also seem to have about the same amount of noise coming from the prop. The Top Flite prop was the noisiest of the 3 and did not seem to unload as well in the air. The Top flite prop flexes a lot more than the TBM prop did which is why I think it lost a lot of pull once in the air. I would not hesitate to buy the TBM prop as it performed just as well as the Bolly.

Good info. I currently run a Bambula 22x10 on my G-62. Dont have any numbers on it yet. I also run a TBM 22x8 on my DL50, at last check, I think it was around 6700 rpm. I need to verity that. I run those two right now because of price. I have a Vess 22B for the DL50 but dont want to run it till I have the plane thoroughly dialed in.
Edwin

How did you get your TBM prop to balance?!?! I have had 6 of their props (23x10's and 24x10's) and only 3/6 were usable. Never able to get 3 to balance because the hole was way off-center: tip-to-tip balance was never really a problem, but the hubs were ridiculously off. No amount of velcro and CA would do it.

Maybe standards have changed since last year.

I love TBM and I spend a lot of money with them, but I can't risk buying the "TBM" props anymore without some reassurance that they can actually be balanced. Maybe I just got a bad lot, beacuse I've never had big problems with NX, Xoar or MSC, and I'm sure one of those manufacturers is simply supplying TMB the props with TBM stamped on the front. Anyone know if that's true?

I would give them another chance.Maybe you just got a bad run.I am sure if you run into a problem they will help you out.I do a lot of work for a friend of mine he has good luck with them.

I just recently recieved a 22x8 tbm prop, and as far as the performance...well it has turned the ole DA50 right around 66-6700 rpm's. Now as far as balancing I have not had the first problem and I have owned a few of their props from 22x8 to 32x10, 2 of the 3 props that i have recently ran I did not have to do anything to them, the came pretty well balanced. Butlern I am not sure what problems you were having but for the most part as far as I can see you can't beat these props(especially in the $ category) As far as performance between Bolly, Vess, Xoar....etc I think the only was you can better the performance is by going w/ a carbon prop....just my two cents!!!

The numbers show only one part of the complete comparison.

How much static thrust the propellers develop? The RPM alone shows only the tip speed and not the "bite". Like the Vess o-la la - they turn faster up and have higher rpm's then anything else but their thrust numbers are way in the basements. Good for very lightweight 3D airplanes but NO good for Warbirds.

One tip to balance the prop hub, use hot glue for larger propellers. And/or, if you "see" the prop is pre-drilled wrong sent them back...

Happy landings
G-Pete

Troy Built Models Prop 22 x 10. Very pleased with this propeller, and produced about 2 more pounds of thrust.

I obtained a TBM 22 x 10 propeller the other day. This prop seemed to be an upgrade for my plane.

I wanted to find a similar 22 x 10 that provided more thrust. Hopefully producing some better maneuvers. Thus to see the results I figured that I would obtain a fish scale and do some static test testing.

When I received the Troy Built Models Propeller I was very pleased. I tested the prop for balance. The balance was right on. Nicely finished, with a clear coating. Tested for fuel proof and stood up to the test. The prop was already pre-drilled. Great, and nothing more was needed.

I tested the thrust with a Z 22 x 10. This produced 6500 RPMs and 20 pounds of thrust. The down fall is that you have to drill out the hole for the bolt to fit, and then you have to balance the prop, etc… so you have to put in about 30 minutes of work to get the prop ready. The Z is $27 at my local hobby shop.

The Troy Built Models Prop was ready to go. Pre-drilled by the factory and pre-balanced. The RPMs were the same and but produced 22 pounds of thrust. The prop is about 3 mm thicker and the blades are thicker also. The TBM prop is less expensive than the Z.

I then tested a Biela 3 blade 20 x10 on the G62. The RPMs were 5800 and the thrust dropped to 19 pounds. The prop looks great, but cost $93, yikes. I can get almost 4 TBM props for this cost.

Looks like I will be flying with TBM 22 x 10 props. Excellent prop, Excellent product.