Official Nexa OV-10 Bronco 1800mm ARF Discussion Thread

[sam51401]

Ok, site is still in works

https://mhartfab.wixsite.com/benchmark-rc/wwi-wwii-pilots

[Boots Whirlygig]

[Boots Whirlygig]

Where is a link????
C’mon Sam I am. I’m ready to make it RAIN!!!

[Boots Whirlygig]

Pilot teaser, one with visor down, one up.

:Scared::Drooling::Drooling::Drooling::Drooling::D rooling::Drooling:


Thats it! Exactly! 1/7????????

[sam51401]

Pilot teaser, one with visor down, one up.

[sam51401]

Request to MA in process for both 15x7 and16x10 sets. Pilots also in works but with another source. Will post more details when I hear back.:Cool:

[OV10]

Whenever I need a MAS prop I always buy directly from them versus dorkin around with a retail web/street vendor who's prices don't really save ya anything. Factory direct pricing from MAS is surprisingly easy on the pocket.;)

[sam51401]

Thanks Boots for the vote of confidence. I'll order a set of 15x7's but there is one little problem in that NO ONE, that i have been shopping and looking for have, the CCW 15x7. 16x10 in both can be had but I'll have to go straight to MA to order the 15" set.
Took the fuse to our club meeting and it got lots of attention, even with stiff competition from a scratch built, self made fiberglass fuse, with molds, of a Navion. There is one in Louisville that he his modeling from and its decked out custom.

[Boots Whirlygig]

I’ve used cut down props and haven’t suffered any ill effects but haven’t checked them on a meter. I would go with the 15x7 for scale like flying. Even at 15# AUW you’ll be amazed how the Bronco responds to the “low gear” provided by the 15x7, much more resembles the full scale turbine running at a constant speed, the throttle increasing or decreasing the propellors pitch. Your take offs and landings are more controlled with the throttle with the shallower pitch. I do not think the OV-10 airframe is a good match to high pitch props, which are better suited to high speed racing a/c.

[sam51401]

So i just got my question answered by Master Airscrew on cutting down a 16x10 to a 15x??. They don't recommend it nor will they trim and balance a set.
Ok, so for testing im stuck with 15x7 and 16x10 on my EMax 4030/10 385kv on 6s. My question was IF i cut a 16x10 to 15", what would that make my pitch be so i could plug in to E-Calc.
For 3 blade props, seems the upper end of a 50 to 60 size motor is somewhat limited. Looks like more selections for the lower sizes in the 10-13" dia. Any other ideas or suggestions on prop trimming?
:Thinking::Confused:
Just FYI, a list of 3 blade CW/CCW sets available from MA
10x5
10x7
11x7
12x6
12x8
13x6
13x8
13x12
14x7
15x7
16x10

[Rosytime]

The reason for the 12x6 three bladed test is that I had one in the spare parts bin. No doubt a 12x8 would be better but the amps would go up and with the 12x6s there is still plenty of watts. Either way I'll have three sets of props to try. All of these combos have ccw and counter ccw props.

[Twowingtj]

I don't know what the numbers are, but I use a Power 32 in my E-flight Advance on 4S and found that the 12X8 3 blade MAS gave the best speed, power and acceleration.

That sounds about right. I'm using the E-flite Power 32 in a Sig T-Clips on 4S with a 13x6.5 APC prop. It flys like a pylon racer and has unlimited vertical. The general rule of thumb when going from 2 to a 3 blade is down 1 on diameter and up on pitch. So your 12x8 3 blade would be a good match.

[Kangi1954]

Alright, here's the latest data with my set-up. E-flite power 32- 10x7 3 blade MAS- 525 watts, 35 amps on 4s. 970 watts, 50 amps on 5s. 11x7 3 blade MAS- 580 watts, 40 amps on 4s, 1000 watts, 60 amps on 5s. Hopes this helps some of you in choosing the power plant for the OV-10 and wanting to use a 3 bladed prop. I don't have any 4 bladed to try so I would be curious to see what others are using or considering to use.

I don't know what the numbers are, but I use a Power 32 in my E-flight Advance on 4S and found that the 12X8 3 blade MAS gave the best speed, power and acceleration.

[OV10]

If I remember correctly, you can extend the leads from the battery to the ESC but you don't want to extend the leads coming directly out of the ESC to the battery. Hopefully someone will correct me if I'm wrong.

LOL Same difference :Smug:Any additional length of wire from the battery to ESC(doesn't make a difference where it originated from) causes the magic Tron gods to start moving their powers around whereas we humans have found the need for larger banks of capacitors be added to the ESC input to counter the magic effects. The safest method is to keep the ESC relatively (a loose term) close to supply voltage (battery) and extend the 3 motor leads as required. ;)

Someone mentioned earlier about using the FW A-10 ESC's with the longer power leads. Good approach because it is designed with the extra caps :Cool:

[Rosytime]

Alright, here's the latest data with my set-up. E-flite power 32- 10x7 3 blade MAS- 525 watts, 35 amps on 4s. 970 watts, 50 amps on 5s. 11x7 3 blade MAS- 580 watts, 40 amps on 4s, 1000 watts, 60 amps on 5s. Hopes this helps some of you in choosing the power plant for the OV-10 and wanting to use a 3 bladed prop. I don't have any 4 bladed to try so I would be curious to see what others are using or considering to use.

[NoDirt!]

I received my Ov-10 yesterday. It was very well packed and arrived in great condition. As I study the plane and manual, I am stumped about battery connections. I have read that it's not good idea to add extensions to the battery to ESC leads, but with the ESC's in the booms and the batteries in the fuselage, I don't see any way to avoid battery lead extensions. Can anyone clarify how to get around this problem? Or, are battery lead extensions not a problem?

If I remember correctly, you can extend the leads from the battery to the ESC but you don't want to extend the leads coming directly out of the ESC to the battery. Hopefully someone will correct me if I'm wrong.

[Rosytime]

An update on my power 32 set-up. Still using the 12x8 thin prop and now using a 5s set-up, I got 1200 watts at 69 amps. Way more than enough to fly this plane. Now I have somewhat of an idea as to which three blade prop to use. I think a 10 something will work. Now to see if I can get counter rotating.

[MikeT]

I was thinking Power 46's with Talon 60's on 4S. maybe I need to revisit that.

Mike

[Rosytime]

I've started the OV-10 build. All the servos are mounted and the motors are mounted. I decided to see what type of power I will get with my set-up. I'm using E-Flite power 32s, a 4s lipo, 100 amp ESCs from the Freewing A-10, and a 12x8 thin prop. I got 680 watts with a 45 amp draw at full power per motor. So a total of 1360 watts at full power for the plane. I haven't checked this combo on 5s yet but I'm sure the watts will go up. I also didn't realize the amount of servo extensions needed so I got a kit to make my own and will be doing that to try and make a neat installation of the wires. Nothing worse than having a bundle of extra wire in the fuselage that just gets in the way when using premade servo extensions.

[Nottoday]

The Freewing ESC Opto from the A-10 have diodes (Elkos) so there is no problem.

Regards
Markus