TBM prop testing

[cap 232g]

I did some some testing with a TBM 22x8 prop from Troy Built Models. It is on a DA-50 on an ES composites pipe. The plane is the EF 88in Extra.

I compared this prop to the Vess 22B prop.

To start off, the TBM 22x8 prop costs $24, and the Vess 22B costs $28. Both of the props weigh in at 5 oz. So far pretty similiar.

One difference I did notice between the props is the hub thickness. The TBM has a hub thickness of 7/8th's of an inch. While the Vess has a hub thickness of 1 inch. So that is one thing the TBM prop could be improved on. But this has not been a problem and I have almost 20 flights on the prop.

At the field I tached both props. I am at an altittude of around 500 feet.

TBM 22x8: 6700 RPM's

Vess 22B: 7500 RPM's

Next it was time to fly!

I started out with the Vess. The first thing I noticed was that this prop has instant spool up with the tuned pipe. It has excellent pull out of a hover and doesn't hesitate at all. But with the high RPM's come some prop rip. The Vess was definitely the louder of the props by far. The Vess also seemed to have a higher top speed but slightly less downline braking.

Next I bolted the TBM on. Right away I noticed that the TBM prop was extremely quiet. By far the quietest prop I have heard on the DA-50. The TBM prop also had very good vertical in IMAC manuevers. And the downline braking was very good. The prop held a very constant speed throughout IMAC manuevers. But the pull out from a hover was slightly less than the Vess as was the spool up. Keep in mind that the Vess spooled up quicker than any prop I have used before.

So, in the end, both props performed very well. Each prop out performs the other in certain aspects. I believe you would be happy with either one of these props.

If you have any questions or experience with these props, feel free to chime in!

[hawk21]

how about the static thrust do you have anyway to measure it?

[cap 232g]

Sorry, I don't have a way to accurately measure static thrust. Static thrust is just a number and I believe flight performance is more important.IMO

[Gus155]

Waiting for mine from TBM, orderd one of the 26x10s to try on my ZDZ 80RVJ.

[cap 232g]

	Quote: Originally Posted by Gus155
	Waiting for mine from TBM, orderd one of the 26x10s to try on my ZDZ 80RVJ.

Be sure to tell us how it performs!

[khedge]

I performed a test on the TBM 22*10 prop. The engine was a Brillelli 50 on a standard pitts muffler. The plane was a 25% yak from Great planes

The prop was tested against a XOAR 22*10

The xoar prop is little heavier than the TBM prop(5 oz). I would say the the xoar is about 6 or 7 oz. As far is price the two props are 24.95.

I did not have a tach at the field so I don't have any tach numbers. When I tests props on my DA-85 am more concerned in the performance in the air not on the ground. Any way back to the review.

First up is the xoar with was all ready mounted to the engine. The first thing I notice about this prop is that the motor idled very smooth and the spool up was very smooth. In the air the prop has alot of pull and the plane will fly very fast with this prop. On another note that prop has excellent downline breaking(Great for IMAC). Also I notice the prop is pretty quiet and most of the noise is the exhaust. The quietness of the prop is due to that high load that xoar prop has.

Next was the TBM. This prop was just has quiet has the xoar, but I did notice that motor had at quicker throttle response than the xoar(due to lighter load on the engine). In the air the pull and speed was very similar to the xoar but the TBM had better constant speed. While flying thru the IMAC sequence I notice that less throttle was need on the up line maneuvers. As for downline breaking the TBM was good, but the xoar seemed to slow that aircraft better.

In the end the TBM 22*10 is great prop for IMAC, I will fly some 3d with is prop and report more results. Stay turned.

If anyone as flown with this prop or has any questions about this prop feel free to drop in.

[rcflyer83]

Hey guys I too have tested Troy Built Models 23/8 prop on an Aviation Models 30% Yak 54. I'm running a DA50 with a Tru Turn spinner and Slimline Pitts style muffler with smoke.

The prop that I tested against the TBM was a Xoar 23/8 that I already had flown for about 6 flights on it.

The weight on the TBM was 5.17 oz. or 146.6 grams, and the Xoar weighed in at 4.83 oz or 136.8 grams. The hub thickness for the TBM measured 23 mm and the Xoar measured 22 mm.

The TBM is a very good looking prop with a nice natural wood finish on it and balanced out very easily after being drilled. The Xoar is the in the black finish with the silver tips and also balanced out easily.

Unfortunately I cannot report the rpms on the ground testing because of a faulty tach.

Performance in the air is what matters most anyway. Right? Of course it does!

Arriving at the field with the TBM prop installed and a steady 8 mph wind with the temperature at 97 and the humdity very high, I fired the DA50 up and it was time for the first flight. After a short taxi down the field and back just to make sure everything was good to go I lined up and punched the throttle and in just a few short feet the Yak was airborn and I pointed it straight up vertical and started to roll. Climbing up and leveling off I was impressed with the take-off and vertical power and at level flight with reduced power it was even as impressive. It was a very quiet prop and had plenty of pulling power at low throttle and the response to the throttle was also very impressive.

In comparing the two props I would have to say that there is a slight difference between the two and in my opinion I would have to give the edge to the TBM based on the performance that I have seen so far. Throttle response seemed to be the biggest difference and quietness coming next in line.

If anyone else has any experience with TBM props let us know what you think.

[cap231jim]

I tested several props on my H9 260/DA 100/MTW cans setup.

3W 27-10
Menz 27-10
Vess 27a
Vess 27b
TBM 27-10

The loudest were the Vess props. They also flew the aircraft much faster (not what I was looking for). The pull out of a hover was O.K.

The Menz and 3W were similar to each other and O.K. Pull out of a hover a little better. Flew the airplane kind of slow.

The TBM was the best overall prop for me. Very quiet; flew the A/C at a moderate speed; and the pull out of a hover was good. It is the prop I have settled on. Ironically, I bought one of these just for the heck of it when ordering some other stuff from TBM.

Now for the kicker: The TBM was the cheapest prop of the bunch! I bought 2 more spares....

I don't know who makes the props for TBM (I'm assuming not TBM!) but it was an outstanding value in my case.

[Altavillan]

TBM's props started out as re-named NX props. Might be still for all I know. I'll take a NX over a Xoar any day. Unfortunatly my guy's at Chief Aircraft in Oregon don't carry NX so I use Xoar a lot. There's just a tiny bit of difference between the two in my opinion. Now if someone could convince Airwild to move to Nevada so I didn't have to pay Ca. sales tax I'd be using more NX props. Or have TBM open a branch closer to Ca. would work too.

[khedge]

i use to fly nx too, and I really like them. I have flew with a xoar 27*10 carbon tip on my Da-85 and I really like it. The prop is quiet and has excellent downline breaking and pull.

[Gus155]

got my box of tricks from TBM today.
26x10 Mejlik, 26x10 TBM(Red, yellow and white painted one) and a drill jig.
The Total cost of the above, including postage to South Africa and the local duties etc was about the same as buying the mejlik locally, so basicly the TBM prop and drill jig were FREE.
Must commend TBM and USPS for getting the package halfway round the world in less than 6 days.

[Gus155]

Very happy with the performance of the TBM 26-10 on my ZDZ 80RVJ. Pulls hard, Spools up fairly quickly and the ZDZ rips it very nicely.
Think i will get a few more of them soon.

[khedge]

well I did more testing withtbmmodels 22*10. The test engine was a brilelli 50. The rpm was 6400 on the ground. The aircraft was a hanger 9 27% extra 260. The prop has a lot of pull and excellent downlone breaking. I liked how quick the throttle response was. I will be dong more testing today.

[Ronbo]

I have a TBM 32-10 on my da150 powered ultimate. It does fine, and the price is good for practice or backup. it does seem to load more, and verticle 'seems' to be less than the Pt carbon, but will do fine for practice/backup. I would like to try a vess 32a i think it is...

[octanehuffer]

I heard a Vess 32B? on a new DA 150 today. VERY LOUD. Points will be deducted from any IMAC contest. Wow, was it loud.