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Help on finding light weight threaded control rods

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David Pearce 414/03/2015 15:24:59
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312 forum posts
37 photos

Hi

I'm looking for some control rods for a lightweight aircraft. Like the common M3 ones available from Logic etc , but lighter. Threaded at one end. I've searched around but can't find any.

Can anyone recommend a source please., thanks

David

Edited By David Pearce 4 on 14/03/2015 15:27:36

Tbone14/03/2015 15:40:23
19 forum posts
23 photos

Hi David,

Try a cycle repair shop for various sizes of wheel spoke.

Steve

Mowerman14/03/2015 15:40:42
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1532 forum posts
105 photos

M2 available from most LMS or on line. (HK, Giant Cod, Servo Shop, Airtek etc)

Geoff Sleath14/03/2015 15:57:05
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3250 forum posts
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Posted by Tbone on 14/03/2015 15:40:23:

Hi David,

Try a cycle repair shop for various sizes of wheel spoke.

Steve

Bike spokes are rolled threads and I'm not sure what the threads actually are, except that they fit spoke nipples. Standard rustless plain spokes are 14 gauge (2mm) but the thread isn't. I have 100s because I used to build a lot of wheels mostly for myself and my wife.

They're OK for plastic end fittings of course but not for metal clevises.

Geoff

David Pearce 414/03/2015 15:58:09
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312 forum posts
37 photos
Posted by Mowerman on 14/03/2015 15:40:42:

M2 available from most LMS or on line. (HK, Giant Cod, Servo Shop, Airtek etc)

Ah, stupid me, I'd presumed that M2 was heavier than M3. Not sure why!

thanks

Steve Hargreaves - Moderator14/03/2015 16:02:21
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Moderator
6709 forum posts
185 photos

How light is lightweight David......? Would a direct piano wire linkage with a "Vee" kink in the middle for adjustment do the job perhaps?

Failing that might some M2 solder on threaded "ends" do the job?

Or possibly some nipple links which clamp to thin piano wire....

RC Plane Flyer14/03/2015 16:25:04
598 forum posts
22 photos

I have used with good success m2 rod inserted into carbon fibre rod and drop of thin super glue and work into the hole in the rod. You have the choice of plain rod for Z bend or threaded rod

David Pearce 414/03/2015 16:29:52
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312 forum posts
37 photos

Thanks everyone for your suggestions. I think standard M2 will be light enough for the ailerons but at the rear I need to go lighter. I have some suitable carbon rod so I'll try that idea first.

Thanks again.

Don Fry14/03/2015 16:40:05
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3614 forum posts
42 photos

Try a two mm inside diameter carbon fibre tube, with a piece of 2 mm threaded studding epoxied inside. Might need supports down its length depending on length and load on it.

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