60-size trainer

[Mike Etheridge 1]

I was once offered a BIG WIG which takes a 60 engine---who made it?

MJE

[David Davis]

The Big Wig was designed by LS Wigdor, a famous pre-war aeromodeller. He taught himself how to fly multi-channel r/c with the model which was powered by a Merco 61. A late friend of mine told me that he'd built two of them but they'd long gone by the time I knew him.

I have the plan somewhere in my stash. Maybe someday...

It is available as a plan from My Hobby Store, code RM50.

[john melia 1]

well just sitting back waiting now ................................ what heat rating plug does the irvine .61 take , hot , medium , or , cold

[David Davis]

I use Model Technics F7 plugs in everything including four-strokes, so does my mate.

Edited By David Davis on 29/03/2013 08:55:35

[john melia 1]

Thanks david that'll do for me then

[john melia 1]

ok guys, i'm just trying to think ahead now , while i wait for the sedona to arrive , what , in your opinion would be a good model to move onto after the sedona , i know i have the puppeteer , and the wildcard , but would these not be too much of a jump from the sedona ?

[David Davis]

I normally recommend a WOT 4 as a second model once a beginner can fly a four channel trainer but the Wild Card, being essentially a fun-fly model should be fine.

It's got plenty of wing area and is very light. You would only need the power of your 46 for vertical manoevres. Throttled back and with limited control throws the model will be a peach to fly.

[john melia 1]

Great thats me for the foreseeble future then , or until i start looking for a traditional build kit ???

[Richard Wood]

John,
If you intend to put an Irvine 61 in the Sedona you'll almost certainly
need to replace the engine mount with a bigger one & also re-drill
the firewall to suit it & probably re-route the throttle cable.

[Richard Wood]

& it's a bit too powerful for a 5 1/2 lb trainer

[john melia 1]

Thanks Richard , would this apply even if i were to keep the engine throttled back to say 50% or so

[Richard Wood]

Yes you could throttle it back John, but I think you'd be much better off
fitting your SC46 & keeping the 61 for something else - but that's just
my opinion.
As I said before, my 6.5lb, 72" trainer flies very well on a .47, so the
5 1/2 lb Sedona will be comfortably powered on a 46.

You could use the .61 in a kit built Wot4 as a next step - it would be ballistic
on a .61! (& weigh around 5 1/2 lb or so).

Edited By Richard Wood on 02/04/2013 09:28:11

[john melia 1]

ok richard , the .46 it is i think , i'm still waiting for the sedona to arrive , looks to be around thursday or friday because ofthe easter holidays , can't wait

[Richard Wood]

Good luck John, Let us know how you get on.

[john melia 1]

don't worry richard , you lot will be the first to know , i'll sort pics out once its arrived

[john melia 1]

not much to see at the moment , but the sedona arrived today so i've took a photo of it as it stands at the minute ,

heres a wing !!!!

heres my chopper --- pardon ??

pictures look a bit squashed !!!!

[john melia 1]

forgot about the wildcard

[john melia 1]

Can anyone spot the blatant mistake here , not that it matters because the pushrods weren't even in the kit

i phoned the guy up , and he said maybe they've changed the design , and i said maybe they have , but the parts are not with the kit !!

Don't suppose i'll hear anything back , so i'm off to get the bits tomorrow

[john melia 1]

what size prop should i use with the SC.46 that i've just installed in the Black Horse Sedona trainer ??

[cymaz]

11x6 good start off point

This might help......magnum and sc are made in the same building

[Braddock, VC]

Personally I think larger is better. My old 46 Fx OS is probably matched by the SC 46 and I used Graupner grey props, 12x5, 12.5x6 and she handled them all. Very quiet and, with the 12x5 unlimited vertical in a wot 4.

Apart from less noise there are other benefits, greater flywheel effect, gives more reliable tickover and the graupner props are sturdy.

Forget 11x6 the makers give these sizes for guidance and for me big props have stood the test of time.

[john melia 1]

thanks just been to the model shop and got a 11x6 and a 11x7

[john melia 1]

oops just read your comment braddock , i'll get a 12x5 the next time i go back over to the model shop

[john melia 1]

this is taking up all my music room !!!!!

[john melia 1]

ok everyone, the sedona is reaching completion , should i make the nose wheel steerable , or just set it straight ? I'm thinking that if its steerable then it would still be steering whilst up in the air with rudder input , would the movement not have a diverse effect on the stability of the model ?

I know when i built a super 60 years ago the nose wheel wasn't steerable .