Super Marauder FS

[john kennedy 4]

Peter, Thanks for your prompt reply. Very helpful.

Will crack on. .. John

[Anthony Hodder]

Hello Peter

I am building a Super Marauder from your plan, I have just one query. Should I build in any right or down thrust ?

I am going to use a SC52FS to power it.

Thanks Tony

[Peter Miller]

Very simple answer. I never use side or down thrust except on a few high wing models and not all of them.

ie. my Peggy Sue and Peggy Sue2 are high wing but no side or down thrust.

On normal aerobatic sports models the only time it swings is on take off, a quick dab of left rudder cures the swing.

[Anthony Hodder]

Hi Peter

Thanks for your reply, a little dab of rudder it is then.

Tony

[Colin Leighfield]

You definitely don’t need a dab of rudder if you do it this way.

[Peter Miller]

Correction I should have said a dab of RIGHT rudder,

Colin, I don't think they do a contra rotating SC 52 FS. I wish they did

[Mike T]

Superb finish, Colin!

But with contra-props, that chin intake and the general layout, it's screaming out for a Gannet AEW3 scheme!

[Colin Leighfield]

Peter, just seen yours. Wouldn’t that be great!

Mike, when I looked at Pete’s design the resemblance to a Chance Vought Crusader at the front was striking! I then thought that with a bit of imagination it could be considered as a turbo-prop follow on to the Skyraider. (There actually was one, the Skyshark, a great big brute that didn’t succeed because of the unsuccessful engine). By reducing the weight using a lot of Depron I made it suitable for a 375W contra-rotating electric set-up. It flies very well and really looks the part. I also fitted retracts to complete the exercise! I reduced the depth of the nose a little bit because I wasn’t trying to conceal a big four-stroke and while I wouldn’t call it a beautiful plane, it certainly has some presence. I did a build blog on it and if you want to have a look you’ll find it alongside Pete’s under “Super Marauder”.

[Peter Miller]

I just remembered something.

Back in the late 50s or early 60s Model Aircraft published a plan for a control line Fairy Gannet with contra props.

IT used an OS 35 driving one prop and an OS 15 geared to an outer shaft turning the rear prop.

I imagine that 99% of readers looked at the plan (or rather, the article), shuddered and passed on rapidly.

Just found it, Sarik Vacform list it 

https://www.sarikhobbies.com/product/ma380-fairy-gannet/

Edited By Peter Miller on 27/12/2017 11:05:56

[Peter Miller]

And here is the plan on Outerzone

**LINK**

[Colin Leighfield]

Dave Wigley won Top Gun in the USA five times up to 2012 with his Westland Wyvern. He used a free-wheeling prop counter rotating in front of the drive prop to simulate a genuine contra rotating set up, it looks the business. Sadly the photo here is distorted, but it gives you a good impression.

[Peter Miller]

NIce but not the same as two engines

[kc]

Mike Lovell's design for a Fairey Gannet ( Flying Scale Models June 2008) used a free wheeling front prop too. Plane is much larger at 81 inch span. Plan seems still available from ADH

Simpler is better?

[Colin Leighfield]

All good stuff. I have to say though the electric co-axial motors from HK are dead simple to set up and use and work very well. I think with the 375w set-up,the SM in lightened form is about the limit on size, although it’s fully aerobatic. Himax in the USA go all the way from 120 through 440, 800, 2050 and 3,600 Watts, nicely engineered twin motor co-axials but getting more expensive.