Twin engine RV-6A...or not

[GusBiz]

Originally Posted by Bob Kuykendall

Boy, that seems like a solid non-starter. Given the extra weight and drag of the twin engine configuration, 220 hp will make for relatively mediocre performance. And when one engine quits, all the other one can do is stretch the glide and maybe increase the number of landing options.

With a pair of 150 or 160 hp engines, it would be better, but still a not very usable airplane. It probably wouldn't be any faster than an RV-6, at least not in terms of Vne.

I think it would be more for crossing ocean legs but I would have done this with a -9. Get her up a bit higher.

All sorts of concerns with this.

- Reduced wing area,
- CoG changes, that nose looks like a storage location,
- Fuel location
- Landing gear
- you would want counter spinning props of course
- How are they hung off of the spar etc

You would want a complete aerodynamic engineering assessment done by a professional consultant.

However, you have to say, who isn't impressed by the ambition and enginuity of the whole thing.

I was wondering why there aren't any exp twins out there, well none that I know of.

If the owner of this aircraft would like a moment in the spot light on this forum I think we would all give them a special thread all of his own.

What do you say Doug?

[ChiefPilot]

I think they should call Van's and see what he thinks. Perhaps ask either Ken if they have any advice they'd like to share.

A copy of the transcript posted here for all to enjoy would be appreciated

[lorne green]

Truely experimental.
I would feel better if it was a one off and not a Van's re-work.
Just my opinion.

[pierre smith]

It MIGHT get off the ground, considering all the lift that's lost because of the fairings behind the engines.

Good luck!

[RV10Man]

... specs on it.

Marshall Alexander

Originally Posted by copied/pasted here by dr

This is my JAG-2 project. It started life as a completed RV-6A, which I originally built and flew for 250 hours. Out of respect for Van's Aircraft, this aircraft is NO LONGER referred to as an RV-6A. The JAG-2 is a side-by-side 2 seat twin-engine cross country aircraft. It will be IFR capable with dual Dynon Skyview EFIS. Some modifications include, but not limited to:
1. Installing 2 Corvair 2850cc 110hp direct drive with 5th bearings.
2. Custom made counter-rotating carbon fiber props.
3. Unique prop brake system in lieu of constant speed feathering props.
4. Increased wingspan by 40".
5. Installed RV-9 tail.
6. Re-designing nose gear with 4130 tubular gear & urethane dampening (similar to RV-10).

[philip_g]

Originally Posted by pierre smith

It MIGHT get off the ground, considering all the lift that's lost because of the fairings behind the engines.

Good luck!

I would think the accelerated Slipstream would help with that. Anyone ever compare a Seminole wing to an arrow? I don't know if they're bigger or not.
Hope he has fun and gets what he expects out of it either way.

[cawmd82]

Somewhere there was a post a while back about someone trying to mate an RV? with a Twin Comanche wing. Anyone have that story?

[jcaplins]

Originally Posted by Chino Tom

I wonder where the fuel is going to be?

Right there behind the firewalls.

[TSwezey]

I like it. No this might not be better but maybe the next step will. Vans didn't create the perfect plane at first they evolved! This is what amateur built/experimental planes is all about. I think the RV-10 would have been a better choice.

[johnny stick]

Maybe y'all can enlighten me, why counter rotating props? There is this old wives tale about p-factor causing yaw, but this is just a myth. Any one?