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Rubber band's


Jonathan
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21 minutes ago, Paul De Tourtoulon said:

No one using cut up inner tubes anymore ?

 

Not many inner tubes these days of tubeless tyres.  It was usual to use cut up inner tubes to hold competition numbers or to hold spare tubes on my trials motor cycles back in the 1960s but I've never seen anyone used them to hold wings in place.

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On 24/11/2024 at 11:07, Jonathan said:

Hi what size/length rubber band's for my junior 60, I haven't finished the building yet, but looking at the positioning of the dowels in the fuselage I'm thinking there going to be quite long. 

I reckon, the plan, depending on the version you are using is between 70 to 80 years old. Put the dowels in where it says, don’t reinvent the wheel. Bands, relaxed, are about 80 % of the route over the wing to the band posts.

office supply shops sell them, without dog do-da attached.

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1 hour ago, Don Fry said:

I reckon, the plan, depending on the version you are using is between 70 to 80 years old. Put the dowels in where it says, don’t reinvent the wheel. Bands, relaxed, are about 80 % of the route over the wing to the band posts.

office supply shops sell them, without dog do-da attached.

But the "wheel" is almost certainly going to be used in a different manner, Don. It needs at least to be re-considered. IMO it's the weakest part of both versions of the design when used with RC.

 

 

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That was certainly my thinking when I recreated my first RC model a couple of years ago.  A 1960s (or earlier) design with options for free flight, control line and single channel, it was designed for rubber bands but modifying it to fit with a tab and single wing bolt improved not only its scale appearance but also ease of assembly and a more positive location. 

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1 hour ago, Jason Channing said:

Slec 7" bands will work absolutely fine, Theirs no need to reposition the dowels mine and my sons  do rolls and loops and the wing never moves out of position on the fuselage, all i ever do is put a 1/16" plywood around the triangle for the dowel to the give the balsa a little more support.

Thank you Jason for straight forward reply most appreciated 

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Coloured bands are available in various sizes  on ebay to match colour of model . I bought some blue ones for my Elf as white ones stood out a spoilt the look. As you can see they still stand out but not as bad as the white SLEC bands.

Tip. Give them a really good stretch before fitting on model . Firstly it will detect any dodgy one that can snap when fitting and damage the model,and secondly makes bands far more elastic and springy . Finally keep bands in a bag with talcum powder and they will last a lot longer 

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20230607_155411.jpg

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