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Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Wed May 11, 2016 5:12 am
by DTA Gareth
i thought you were making a car not an aeroplane

Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Wed May 11, 2016 7:58 am
by PhillipM
I thought I was too but since it never seems to be on the ground anyway...

Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Wed May 11, 2016 5:33 pm
by PhillipM
Airplane is getting bigger.

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Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Thu May 12, 2016 3:47 pm
by PhillipM
Good news, the CV joints are here!

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Bad news, they're the undercut 'race' ones with undersized CV balls that we don't want, as per earlier in the thread, as they're crap for wear and distort where the bolt heads are undercut.
So yes, more waiting....

Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Wed May 18, 2016 5:26 am
by PhillipM
More wing pictures time - finally got the first skeleton up to full width - need a thin sheath of balsa in certain spots just to give it some shape in order to skin it with either fabric or fibreglass to give it a structural skin, the wooden spars will get replaced with aluminium tube when it arrives, and it needs some carbon + epoxy reinforcements to go in on the trailing edge to stiffen/strengthen it, but at least it's getting closer - just another 3 to go...

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Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Thu May 19, 2016 1:53 am
by DTA Gareth
How thin?
Soaking the wood in warm water really helps flexibility with those jobs.
But needs to be soaked for a good while.
Also assuming you have something big enough to do it in xD

Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Thu May 19, 2016 4:56 am
by PhillipM
The balsa is only 1/64th inch - the leading edge is the worst as it's not as benign a shape as most models are - and I've had to set the balsa profile inside the wing rather that on the front as otherwise I would have had to hand sand the leading edge shape in the whole thing. A bit of fairing filler by the ribs up front might help I think.

Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Wed Jun 15, 2016 7:05 am
by PhillipM
Well, that's one (still needs it fibreglass skin, has a thin* balsa layer at the minute to form the cloth over and it's allowed me to foam fill the leading and trailing edges for dent resistance)....

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On to the always growing list of 'additional shit we shouldn't touch until it's finished but we're probably going to do anyway' - the front mudguard mountings tubes are going, they were originally left separate to the damper mounts so no damage occurred to the suspension if a mudguard got ripped off, but we've worked out a smaller, neater way to do it which gets that curved tube out of the equation. Should be lighter, look a lot neater and gets the tube out of the way of the wing endplates.

Oh yes, as you can see it has some shiny new nerf rails down the sides too to go with the bumper that's in progress.
Good for bouncing off trees, rocks and mowing down small children.

*So thin you can see the ribs through it, saves at least 10 vital grams of weight! ;)

Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Wed Jun 15, 2016 12:28 pm
by stevieturbo
Out of interest...what is the purpose of this wing ? and what sort of speeds does the vehicle travel at ?

Re: Safari buggy + Rotary engine, now converting to S2000 en

Posted: Wed Jun 15, 2016 12:31 pm
by stevieturbo