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Broken Rudder

rudder link

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David Soper13/02/2019 16:27:24
101 forum posts

Hi Guys ive managed to break the rudder off on my foamy Tundra.

What is the best way to repair, Ive tried tagging with glue but it is either too fragile or too well bonded and not free movement.


John Tee13/02/2019 16:30:03
728 forum posts
65 photos

Try reinforced clear parcel tape each side of the rudder/fin. Can't think of a trade name at the moment. seenit mentioned before.


Denis Watkins13/02/2019 16:38:28
3597 forum posts
166 photos

Crossweave glass filament tape


Geoff Sleath13/02/2019 16:52:34
3239 forum posts
247 photos

Blendern or Diamond Selotape both work well or you could simply fit conventional hinges as you would for a balsa model.


Keith Sharples13/02/2019 16:53:48
120 forum posts
2 photos

I second Blenderm tape, Link

David Soper13/02/2019 17:53:30
101 forum posts

Thanks Geoff and Keith, Tape on order, does it bond well or would you suggest touch of glue


Keith Sharples13/02/2019 20:11:23
120 forum posts
2 photos

It bonds well, make sure surfaces are clean as per usual. I have a Tundra but not used the tape on it. I have used it on a foamy called Critical Mass. After a bad landing one of the ailerons had parted company, a strip of Blenderm either side of the hinge line and no problems since, as in the plane is ok.......... my flying !! thats debatable!

Old Geezer14/02/2019 09:04:25
583 forum posts

You can also make a "live hinge" using a bead of UHU Por.

Tim Flyer14/02/2019 09:43:18
961 forum posts
158 photos

If you don’t like “sticky tape “ one repair I have used on foam Models is fine fibreglass covering cloth. I always save off cuts from balsa model builds. Tissue paper also works well . The cloth /tissue can be bonded and brushed down to the surface using wood glue, Epoxy , or even foam safe cyano. It provides a very strong and rigid fix and can be was laminated as per requirements 😊...oops I think he is talking about re hinging the rudder ? On a foamy I would cut the rudder off and use new Mylar hinges

Edited By Tim Flyer on 14/02/2019 09:47:58

Edited By Tim Flyer on 14/02/2019 09:48:30

Nigel R14/02/2019 11:34:24
2731 forum posts
448 photos

I've rehinged with cyano hinges if the existing hinge is too far gone. Used canopy glue, seems to still be working.

Paper or tissue + PVA works pretty well, for thin surface repairs. Costs next to nothing, too. And can be used to stiffen controls up quite nicely, if needed.

I have had a couple of hinges tear out small lumps of foam as well, when a surface detached itself after some encouragement from the turf, with the hinge still in it, and a small lump of the wing attached to the hinge. The tissue/paper + PVA type repair holds the torn out lump of foam back in place quite nicely.

Frank Skilbeck14/02/2019 12:04:24
4358 forum posts
101 photos

Club member tore an aileron off his Tundra and reattached it with a standard RC hinge glued into the foam with Gorilla glue. His Tundra has been repaired a few times with Gorilla glue, so much so he's cut the Gorilla out of the packaging and stuck him to the windscreen as the pilot laugh

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