Contra rotating props.

[Idle Crow]

Is there any reason why one of these wouldn't be awesome in a Mustang?

 

[leaded50]

Is there any reason why one of these wouldn't be awesome in a Mustang?

NO, use if want! i have used two such in some planes at approx 900-1100mm wingspan. More thrustpower than by single motor.
A bit heavier than single though, so check CG.
And remember, they are just for max. 3S, producer didnt recommend try with using 4S

 

[Idle Crow]

I think I will try one as soon as I stop wrecking slow ones. They probably sound cool.

 

[BlockerAviation]

Is there any reason why one of these wouldn't be awesome in a Mustang?

It would be even cooler in a spit or Wyvern! Although a fisher P-57 would be interesting.

 

[Ratcheeroo]

NO, use if want! i have used two such in some planes at approx 900-1100mm wingspan. More thrustpower than by single motor.
A bit heavier than single though, so check CG.
And remember, they are just for max. 3S, producer didnt recommend try with using 4S

If I remember correctly it also needs two ESC's which in turn adds more weight, I've been eyeballing that engine for a while now just haven't come across the right project yet

 

[Taildragger]

If I remember correctly it also needs two ESC's which in turn adds more weight, I've been eyeballing that engine for a while now just haven't come across the right project yet

One picture is all it takes:

 

[Ratcheeroo]

One picture is all it takes:
View attachment 199717

Yep I think so, just happen to have a candidate after all, 2 of them in fact, be a shame if they both had to use the same power pod LOL!. My first Racer/Slinger had the nostrils too. I think the 'Spiderplane' needs that engine

 

[Taildragger]

Yep I think so, just happen to have a candidate after all, 2 of them in fact, be a shame if they both had to use the same power pod LOL!. My first Racer/Slinger had the nostrils too. I think the 'Spiderplane' needs that engine View attachment 199724 View attachment 199725

The Blue Fire... HOW?

 

[Ratcheeroo]

The Blue Fire... HOW?

Its vinyl, still have the print file of that pattern

 

[dap35]

I think the idea is better than the reality. We had a pattern competition last year and 2-3 people had these installed. Frankly, I was underwhelmed. I don't think it improved either the performance or handling. You could always tell when one fired up though.... that sound is unique.

 

[cyclone3350]

I was at one time considering a Himax to do a XB-42 Mixmaster but never got around to give it some serious consideration.

 

[Idle Crow]

I think the idea is better than the reality. We had a pattern competition last year and 2-3 people had these installed. Frankly, I was underwhelmed. I don't think it improved either the performance or handling. You could always tell when one fired up though.... that sound is unique.

 

[Taildragger]

I think the idea is better than the reality. We had a pattern competition last year and 2-3 people had these installed. Frankly, I was underwhelmed. I don't think it improved either the performance or handling. You could always tell when one fired up though.... that sound is unique.

I feel like these mostly help with looks and reducing torque roll.

 

[Piotrsko]

Contras are only good where you have to sink a huge amount of power into a short prop disk or are modeling something that has them factory. They're not really as efficient as a large diameter single.

 

[Idle Crow]

Contras are only good where you have to sink a huge amount of power into a short prop disk or are modeling something that has them factory. They're not really as efficient as a large diameter single.

The LCF is definitely the main reason, but I also thought it would be a good way to get more power without torque issues.

 

[quorneng]

Piotrsko is correct.
Contra rotating was only used in full size if the power available meant the prop would be so big the tips would go supersonic or there was insufficient ground clearance for a suitable diameter prop or the torque at take off was a significant issue or all three!