~FMS Props: Props/Spinners & Mods~ - RC Groups
Thread Tools
This thread is privately moderated by Sandancer, who may elect to delete unwanted replies.
May 22, 2013, 06:57 PM
"Auntie Samantha"
Sandancer's Avatar
Build Log

~FMS Props: Props/Spinners & Mods~


The FMS 4250 motors, various props/spinner

combos, & mods!


===========================

UP-DATE 3/04/2014:
As of April, 2013 FMS had changed motor manufactures!

UP-DATE 3/30/2014:
I've finished my new static tests on the PAEP 4250 540 & 580kv motors! Here is the new link: ~PAEP 4250 Dyno Tests w/Thrust Tester~

===================================




At this time there is very little info, but what I was informed of is this.......
~This is the new motor from PAEP that is now being offered in the latest versions of the FW-190.
~All specs (see data sheet below) have remained the same.
~It will still function with the FMS oem 65A ESC
~As with the G&C motors, max. voltage is still 18v (4S)
~These new motors are constructed of stronger materials.
~The 4250-500kv motor will be discontinued soon.



===========================

~UP-DATE 6/19/2013~ I have additional info on the new PAEP 4250-580kv motor.



My first impression of the new motor was a bit daunting as I couldn't tell much difference between the PAEP and the G&C? Cosmetically both motors look alike with the exception of the colors, Gold vs. Red.
~The motor mount holes are the same, as well as the prop adapter holes.
~The PAEP has a C-clip in addition to the collate on the rear tail shaft.
~Both measure 42.5mm can diameter. The PAEP is 45.40mm from mount base to prop adapter base, the G&C is a bit longer 45.78mm (which both differs from FMS's "B" / 64mm measurement?)
~The PAEP weighs 7.4 oz. as opposed to the G&C weighing 7.8 oz.?

Upon closer inspection I discovered why the PAEP weighed less then the G&C!

It seems there are less windings on the PAEP armature then there is on the G&C, about 0.4 oz. less copper!



I'm not sure how that will effect both performance and longevity? Only time will tell, I guess?

I'll be setting up a dyno test with the new PAEP motor in the next day or two, and we'll see how it matches up with the G&C?

For more in-depth pics, check the thumbs below.






===========================

UP-DATE 6/02/2013: I've updated info for the P-51 540kv to 580kv motor upgrade in the motor/prop section below.

===========================





Terry at Small Parts CNC has come up with a new Extended Prop Adapter w/No Hex Key for the FMS 4250 motors. The advantage of this new adapter is the ability to add additional prop options to the various FMS planes utilizing the G&C (Red) & PAEP (Gold) 4250 motors, especially those who want to experiment with 2-blade options, and different spinner combos. There is a 10-32 tapped hole on the end of the shaft to work with a variety of aftermarket spinners such as those from Hangar 9 and Tru-Turn.



Dimensions -

Shaft Diameter: 8mm
Shaft Length: 52mm
Base Thickness: 8.9mm
Overall Length: 61mm
Mounting Holes (center to center): 15.8mm
​Alignment Pocket (back of adapter): 11.07mm diameter / 4.3mm deep

This new adapter works great for those wanting to modify their P-51's with a wide variety of spinner/2-blade combos now available on the market. I've listed a few examples below.









~For more details view Thumbnails below~


===================================





As I reported earlier, I've been working in conjunction with Terry at Small Parts CnC in the development of an extended prop adapter for the FMS G&C 4250 500kv, 540kv, & 580kv motors which have an 8mm x 35mm hex keyed prop adapter. I am happy to say they are now available!

The design was primarily based around the FMS P-51 spinners. The idea for an extended adapter is for the expansion of prop options to include the various 2-blade props on the market, MAS, APC, etc. It can also work for the more expensive composite 1-piece 4-blade props as well as the VarioProp 12C. props.

Unfortunately the FMS 35mm adapter just won't accommodate a prop assembly with a hub thicker then 17mm with enough thread to securely tighten the nut, not to mention the additional friction washer. The SPCnC 61mm adapter has the length to accommodate the thicker hubs along with a friction washer and either a standard 8 x 1.25mm nut or the 8 x 1.25mm domed nuts as well. Because the adapter is for the use of optional blades, it will work with either the V6 FP106 spinner which uses screws, or the V7 SU116 spinner which uses the 3mm bolts & nuts, both having the slots already cut for a 2-blade prop.

The SPCnC adapter will also work with the other FMS planes, Zero, 190, 109 etc. using the 4250 motors as well. It can be used on the Corsair, T-28, P-47, etc. with their 3 & 4 blade hubs if prop options are warranted? I haven't explored any of those options!

To sum up, the Small Parts CnC FMS 4250 series Extended Shaft Prop Adapter will work on just about any prop mod you might want to make on your FMS planes. Check it out!

Now that I have the means to do so, I'll be checking performances on various FMS 4250 motors in conjunction with different prop combinations.

============================

The 1mm Prop Shim mod!



The idea behind the 1mm shim mod on the FMS P-51 is to increase the blade pitch 2 +- by placing a shim under the leading edges of all four blades, thereby increasing the performance! I'm going to elaborate more on Nick/v8Truckin's 1mm prop shim mod.

On Nick's original mod he was using his FMS 1700mm P-51 as the example. Because of the difference's in scale between the 1700 P-51 & the 1400 P-51, the shims he used on the 1700 spinner won't work as well on the 1400 spinners.



As you can see, the larger 4.85mm x 1.17mm wire ties are suitable for the 1700 spinner as they're a perfect fit for the blade ramps incorporated in the anchor pockets for the 1700 blades, but they are to wide to achieve the same results with the 1400 spinner, therefore I use the smaller 2.50mm x .89mm wire ties to achieve the same results. The draw back to the larger shims on the 1400 plate are two fold. Reliefs have to be ground to clear the bolts, and the additional width prevents the blade from achieving any angle in the anchor pockets. With the smaller 2.50mm shims the width is a perfect fit and will allow the blades to incline in the blade pockets with no problems, thus an increase of blade pitch.

I've been asked if the shim mod will work with the earlier V6 spinner & blades? I would say yes, but because the V6 uses screws to attach the blades I would caution against it! I highly recommend using the newer V7 spinner with it's 3mm bolts & ny-locks. Because of the high torque and stress the backing plate & blades endure, I use longer 3mm x 20mm hex head cap screws on all of my blade mounts for a couple of reasons. First, the oem's are Philips head prone to stripping the heads out. Second, the 3mm x 17mm Philips heads barely penetrate the nylon in the ny-locks in the stock app., and with the shim mod that penetration is even more negligible.

Another issue that was brought to my attention is that several guys who have the V6 P-51 also have an abundance of spare V6 blades. I'd like to point out, the V6 blades WILL fit the newer V7 P-51 spinner! All that needs to be done is to enlarge the two holes with a #31 drill bit. If one isn't handy, a 1/8" drill bit will work as well. The four dimpled index's are exactly the same, so the V6 blades fit nice and snug in the V7 plate!
*An added note, the early V3 blades will also work with the V7 spinner as well.



Another thing to note, the V6 & V7 spinner cones and backing plates are interchangeable, so depending on what mod you're wanting to accomplish, be it a 2-blade app. with the opening already cut in the spinner cone, or the shim mod utilizing the regular spinner cones with equal blade openings, FMS makes both. Tom at MotionRC is working to get both versions in stock, so check your favorite dealer to see if he has them available.



So in conclusion, the 1mm shim mod will increase the performance if done properly. Just keep in mind, to much pitch and you'll run the risk of overloading the motor & ESC, and lesson your flight times.

~For more info and how-to pics, check the thumbnails below~

==================================

The FMS G&C 4250 motors: 500kv, 540kv, & 580kv, and the various prop combinations.

I used the new SPCnC FMS 4250 Series Extended Shaft Prop Adapter on all three of the G&C 4250 motors in conjunction with all of the various prop tests I performed.


The test equipment:

Turnigy Plush 80A ESC
Turnigy 4S 5000 25-35C Lipo (2)
Rhino 4S 4000 25C (1)
Watt's Up meter
GWS MT1 servo tester
G.T. Power KV/RPM meter
Lipo Voltage Sensor and Display
Prop Reamers: Std. & Metric
Sloan Strap Wrench
3-Speed Blower Fan



Keep in mind, these are static bench tests I ran on my homemade motor dyno. The posted numbers are a result of my tests, yours may vary? I'm confident these numbers are as close to accurate as they can be, and hopefully they will assist those trying to figure out a good motor/prop combo for their planes. I had no way to determine and thrusts numbers with my set-up, and I'm not sure they would be an accurate measurement anyway?

Because FMS doesn't give us much in the way of specs on their motors, other then motor size and Kv, the only other benchmark I could find was Bungymania's evaluation of the G&C 4250-500kv motor.



Please note the amp draws, as a couple of my tests did approach the exceeded rating of the FMS oem 65A ESC. Upon FMS recommendations, all tests were conducted using 4S 14.8v lipos only. I cycled the lipos so I could run each test with a full charge as much as possible.

All the tests were measure in KV's instead of RPMs so I could monitor those compared to the motor's own specs. The KV's vary and aren't an exact science.

I have found that when doing static tests, such as these, it's essential to keep the motors and ESCs happy! I use my 3-speed Blower fan to insure that!


==============================

UP-DATE 6/02/2013:

When I up-graded my 1450mm P-51D BBD with the G&C 4250-580kv motor I noticed an increased gap (from 2mm to 4mm) between the spinner plate and the cowl?



To satisfy my curiosity I took a second look at the three motors, 500, 540 & 580, and sure enough, there is a inconsistency between the three motors in relation to can lengths. Although the diameters are close (42mm) the length from the base to the adapter hubs are different.



As noted, the 580 is 2.2mm longer then the 540 hence the increase in the gap I noticed between the spinner plate and the cowl. For some this may not be a big deal, but I'm a stickler for detail so to solve the problem I chucked the FMS 4250 Series Extended Shaft Prop Adapter in the lathe and removed 0.075 from the base.



Now I have my 2mm gap back between the spinner plate and the cowl.



Conclusion: For those planning to upgrade their P-51's with the 580, be prepared for that gap increase and make adjustments according to you own preferences.

===============================


~The numbers!~

I'll start with the FMS P-51 4-Blade Prop/Spinner combo.



G&C 4250-500kv motor/stock: 709W / 46.38A @ 16.37v / 506kv
G&C 4250-500kv motor/1mm shim: 847W / 57.10A @ 16.46v / 490kv
*No video*

G&C 4250-540kv motor/stock: 771.4W / 50.75A @ 16.61v / 550kv
G&C 4250-540kv motor/1mm shim: 934.8W / 63.94A @ 16.53v / 535kv

G&C 4250540kv Prop Tests (3 min 8 sec)


G&C 4250-580kv motor/stock: 941W / 62.24A @ 16.66v / 590kv
G&C 4250-580kv motor/1mm shim: 1153W / 79.70A @ 16.56v / 565kv

G&C 4250580kv_FMS Prop Tests (2 min 7 sec)


In addition, I ran tests with both the 540 & 580 motors using the FMS 4-blade and 3-blade props used on the F4U.



G&C 4250-540kv motor/4-blade: 813W / 53.91A @ 16.48v / 545kv
G&C 4250-540kv motor/3-blade: 670.5W / 44.04A @ 16.43v / 560kv

G&C 4250540kv_Prop Test2 (1 min 41 sec)


G&C 4250-580kv motor/4-blade: 940W / 62.21A @ 16.74v / 595kv
G&C 4250-580kv motor/3-blade: 830.4W / 54.24A @ 16.73v / 610kv

G&C 4250580kv_Corsair Prop Tests (1 min 41 sec)


Once I was finished testing the FMS props I set out to run tests on a variety of 2-blade props combos on the 4250 motors. This where the FMS 4250 Series Extended Shaft Prop Adapter
from SPCnC came in really handy. With it's extended 61mm length there was no problem having enough threads to secure any of my 2-blade props to the FMS P-51 spinner plate.



In contact with Tom Ellison at MotionRC pertaining to testing 2-blade props with the G&C 4250 motors, he asked if I would include some of the APC props he has in stock. Upon the recommendation by Leo at FMS he sent me 5 props to test, including a APC 14x10, 14x12, 15x7, 15x8, and a 16x8. In addition to those, I also tested the MAS K-series 14x8, the MAS 13x8.5E, the TGS sport 13x10, TGS sport 14x8E, and a FMS 13x9.






G&C 4250-500kv motor/APC 14x10: 461W / 29.91A @ 16.23v / 510kv
G&C 4250-540kv motor/APC 14x10: 529W / 34.39A @ 16.51v / 565kv
G&C 4250-580kv motor/APC 14x10: 613W / 39.86A @ 16.45v / 610kv



G&C 4250-500kv motor/APC 14x12: 518W / 34.09A @ 16.12v / 500kv
G&C 4250-540kv motor/APC 14x12: 600W / 39.87A @ 16.35v / 585kv
G&C 4250-580kv motor/APC 14x12: 715W / 46.90A @ 16.38v / 615kv



G&C 4250-500kv motor/MAS K-series 14x8: 542W / 34.15A @ 16.65v / 500kv
G&C 4250-540kv motor/MAS K-series 14x8: 549W / 35.26A @ 16.44v / 545kv
G&C 4250-580kv motor/MAS K-series 14x8: 647W / 42.43A @ 16.29v / 595kv



G&C 4250-500kv motor/MAS 13x8.5E: 515W / 32.60A @ 16.58v / 500kv
G&C 4250-540kv motor/MAS 13x8.5E: 537W / 34.95A @ 16.26v / 550kv
G&C 4250-580kv motor/MAS 13x8.5E: 618W / 40.92A @ 16.23v / 600kv



G&C 4250-500kv motor/TGS Sport 13x10E: 428W / 26.98A @ 16.51v / 500kv
G&C 4250-540kv motor/TGS Sport 13x10E: 482W / 30.75A @ 16.72v / 550kv
G&C 4250-580kv motor/TGS Sport 13x10E: 522W / 34.55A @ 16.10v / 600kv



G&C 4250-500kv motor/TGS Sport 14x8E: 510W / 32.56A @ 16.45v / 510kv
G&C 4250-540kv motor/TGS Sport 14x8E: 544W / 35.28A @ 16.58v / 560kv
G&C 4250-580kv motor/TGS Sport 14x8E: 717W / 45.35A @ 16.73v / 595kv



G&C 4250-500kv motor/FMS 13x9: 423W / 27.07A @ 16.37v / 502kv
G&C 4250-540kv motor/FMS 13x9: 473W / 30.57A @ 16.51v / 554kv
G&C 4250-580kv motor/FMS 13x9: 591W / 37.34A @ 16.68v / 604kv



G&C 4250-500kv motor/APC 15x7: 466W / 32.56A @ 16.59v / 498kv
G&C 4250-540kv motor/APC 15x7: 475W / 30.85A @ 16.37v / 530kv
G&C 4250-580kv motor/APC 15x7: 595W / 37.87A @ 16.59v / 570kv



G&C 4250-500kv motor/APC 15x8: 527W / 33.03A @ 16.52v / 490kv
G&C 4250-540kv motor/APC 15x8: 516W / 33.40A @ 16.35v / 535kv *Vid*
G&C 4250-580kv motor/APC 15x8: 644W / 41.05A @ 16.51v / 575kv

G&C 4250540kv_APC 15x8 Prop (1 min 9 sec)




G&C 4250-500kv motor/APC 16x8: 599W / 38.04A @ 16.44v / 450kv
G&C 4250-540kv motor/APC 16x8: 611W / 40.49A @ 16.25v / 520kv
G&C 4250-580kv motor/APC 16x8: 775W / 50.43A @ 16.45v / 570kv

For reference I mounted the APC 16x8 prop on my FMS 1450mm P-51D BBD to check the prop clearance in a simulated landing trajectory.







Working in conjunction with both Terry at SPCnC and Tom at MotionRC on these test sessions, I want to thank them both for their support, and encourage everyone to visit their sites.





Next test session...the VarioProp 12C!




==================================


~~~~Thumbnails~~~~
Last edited by Sandancer; Apr 03, 2014 at 09:17 AM.
Sign up now
to remove ads between posts
May 26, 2013, 12:34 PM
Upstanding Member
Kurt's Avatar
Very thorough and detailed testing Gary!

Can you please help to interpret the results:

Without thrust data, what kind of relationship between Amps, Watts, kV should we be looking at for an "optimal" prop and motor combo (understanding some combos will give better torque and some higher speeds, and some could very well make the ESC and/or motor go "BOOM!")?

Assume all test data was taken at WOT?

Can you include the manufacturers Amp and Watt limits (continuous and/or peak) for each motor?

Thanks much!
May 29, 2013, 03:42 PM
"Auntie Samantha"
Sandancer's Avatar
Quote:
Originally Posted by Kurt
Very thorough and detailed testing Gary!

Can you please help to interpret the results:

Without thrust data, what kind of relationship between Amps, Watts, kV should we be looking at for an "optimal" prop and motor combo (understanding some combos will give better torque and some higher speeds, and some could very well make the ESC and/or motor go "BOOM!")?

Assume all test data was taken at WOT?

Can you include the manufacturers Amp and Watt limits (continuous and/or peak) for each motor?

Thanks much!
With the new FMS 4250 Series Extended Shaft Prop Adapter in hand, my original intent was to sat out to test all 3 of the G&C 4250 motors in conjunction with the P-51 spinner, with & without the shim mod to determine their individual power limits (W), and their related loads (A). What started out as a simple 6 test project turned into a week and a half 40+ test session with vids when Tom from MotionRC asked me if I would test some of the APC 2-blade props for him as well.

I have no facility to determine an accurate way to measure thrust on my bench mounted dyno, and of course, they were all at WOT.

As I stated in my blog update to answer your inquiry, Bungymania was the only source I could find, and it's limited to the G&C 4250-500kv motor. I was hoping that maybe someone would come forward with any additional related info, but so far nothing?

As noted in my tests, the 500 motor did decrease in kv somewhat with the shim mod which would indicate an increase load on the motor.

My conclusion to the tests, the 500 & 540 is fine with the stock P-51 4-blade prop, but when shimmed, the 540 gets close (64A) to the limits of the oem 65A ESC. The 580, on the other hand, is already close at 62A, and exceeds those limits at 80A with the shim mod.

Keep in mind, these static tests are in no way a reflection to the actual numbers achieved during a flight test, where a logger would be beneficial in determining accurate thrust numbers.

As I stated, these are by no means, an exact science. I encourage anyone to run their own tests and share their results as I did.
May 29, 2013, 04:21 PM
Upstanding Member
Kurt's Avatar
Thanks Gary.

So the main purpose of the testing was to measure the Amps and Watts of various motor&prop combos, for the purpose of comparing against ESC (and so far at least the 500kV) motor limits. Useful info to be sure, it just wasn't clear to me how you envisioned the data to be used by readers.

And as you say the data is measured under static (0 airspeed) conditions, and will be different in the air. At first I thought the blower was there to simulate actual flight conditions

On another thread somebody made a fairly simple pivoting test rig with a lever arm resting on a digital scale. This provides fairly accurate data, which along with pitch speed, amps and watts provides the information (calculated or as-tested efficiency in mAh/minute would be nice to have as well) necessary to compare all aspects of prop&motor performance.

This isn't the one I was thinking of (was more solidly constructed) but it's the same idea:
https://www.rcgroups.com/forums/show...77&postcount=9

Another option to the extended shaft is to get a new spinner with a thinner back-plate. I'm using this one and while it's ~1/4" smaller than stock it works great:
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXEBF1

This way you can keep the stock spinner for 4-blades and be able to quickly swap it out for 2-blades on demand.
Last edited by Kurt; May 29, 2013 at 04:26 PM.
May 29, 2013, 04:30 PM
"Auntie Samantha"
Sandancer's Avatar
Quote:
Originally Posted by Kurt
Thanks Gary.

So the main purpose of the testing was to measure the Amps and Watts of various motor&prop combos, for the purpose of comparing against ESC (and so far at least the 500kV) motor limits. Useful info to be sure, it just wasn't clear to me how you envisioned the data to be used by readers.

And as you say the data is measured under static (0 airspeed) conditions, and will be different in the air. At first I thought the blower was there to simulate actual flight conditions

On another thread somebody made a fairly simple pivoting test rig with a lever arm resting on a digital scale. This provides fairly accurate data, which along with pitch speed, amps and watts provides the information (calculated or as-tested efficiency in mAh/minute would be nice to have as well) necessary to compare all aspects of prop&motor performance.

This isn't the one I was thinking of (was more solidly constructed) but it's the same idea:
https://www.rcgroups.com/forums/show...77&postcount=9

Another option to the extended shaft is to get a new spinner with a thinner back-plate. I'm using this one and while it's ~1/4" smaller than stock it works great:
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXEBF1

This way you can keep the stock spinner for 4-blades and be able to quickly swap it out for 2-blades on demand.
Thanks for that link Kurt, but I don't think I want to get in that deep. If so, I would probably take the approach JBC/John did a couple of years ago.
May 29, 2013, 10:27 PM
Upstanding Member
Kurt's Avatar
LOL Love that test rig

So after all the testing which motor & prop will you be running?
Jun 19, 2013, 10:13 PM
Most people are stupid!
dambit's Avatar
Great info

Would be nice to have torque figures though as they are helpfull in determining suitable prop diameters etc.
Jul 16, 2013, 08:02 AM
DX6i,DX7..low on model memory!
malcolxl's Avatar
Hi

Can you guys advise me on a suitable 2 blade prop and spinner to replace the 4 blade prop that came with my 1700mm mustang. I know I am going to break the original soon and spares are hard to get here in England. At least it willkeep me flying while I await the proper one.

Cheers

Colin.
Aug 27, 2013, 04:19 PM
Registered User
Hello,

Where did you get the new motor from? I haven't seen it listed on Motion RC or any other hobby site.
Aug 28, 2013, 02:37 AM
Registered User
Hi, where is the VarioProp 12C test ?
Oct 11, 2013, 04:34 AM
Crazy, not stupid
I picked up the longer adapters this morning before work. They look very well made and I was really happy about the communication of smallparts! Sadly it cost me a whopping €48,64 total to get them here (about $65.82) so they better fit and work perfectly but I bet they will!

Finally, progress!


Oct 11, 2013, 11:11 AM
Registered User
Don't want to scare you but your old posts say you have v4? I should have asked your version before recommending.

From the compatibility description:
"Due to different style hubs FMS has available, please verify the hub you will be using will accept a 9mm flat to flat hex nut. The 8mm version hub will not fit these adapters."

"Because the adapter is for the use of optional blades, it will work with either the V6 FP106 spinner which uses screws, or the V7 SU116 spinner which uses the 3mm bolts & nuts, both having the slots already cut for a 2-blade prop."

But if you need to get v6 spinner to use, this site is close and maybe not too expensive. I think v4 parts would be hard to find.
http://www.hobbyfly.de/rc-flugzeuge/...1-mustang.html

It might be possible to shim hex with .5mm .02" sheet but can't recommend it for safety.

In any case, your plane will finally fly and you can use the cheaper props for better performance. Good luck to you.
Oct 11, 2013, 11:24 AM
Crazy, not stupid
Well actually one V2 and a V4 (parts) I think. Will the V6 spinners fit directly and is it the same size as the V2/4 spinner? These planes cost me a fortune by now and by Odin they will fly before this year is over XD
Oct 11, 2013, 11:44 AM
Registered User
i don't have the older versions to compare, but my v6 spinner measures 90.00mm dia, 9mm hex socket.

It seems like apce 15x8 has much more thrust for same power, and 14x10 much more speed on the 600kv motor so 2 blade mod is worth it, as Sandancer has found on other motors:
http://www.bungymania.com/imageshome...SELECT=p51dfms
Oct 14, 2013, 02:19 PM
Crazy, not stupid
Thanks, I guess I will just order those as well... Might as well get all the way and finally get them back in the air... Somewhere around spring


Quick Reply
Message:
Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
For Sale FMS Pitts spinner and prop set SBP Aircraft - General - Miscellaneous (FS/W) 0 Apr 29, 2013 10:57 AM
Sold Upgraded Raidan Spinner with 2x 11x6 Aero-Naut Props (Multiplex Easy Glider Spinner) timmins02 Aircraft - Sailplanes (FS/W) 1 Apr 17, 2013 08:30 PM
For Sale FMS BF109 LG, motor, spinner prop etc mikeramos Aircraft - General - Miscellaneous (FS/W) 3 Feb 12, 2013 10:19 PM
Sold FMS Stuka Motor/Prop/Spinner Combo Rudderman98 Aircraft - General - Miscellaneous (FS/W) 2 Apr 17, 2012 04:54 AM
Sold FMS (Airfield) 1.4 m P-40 Prop and Spinner $15 Shipped ek123 Aircraft - Electric - Power Systems (FS/W) 1 Jan 10, 2011 09:39 AM