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Re: 1/4 Scale Salto
Posted: 03 Mar 2021, 23:03
by Cliff Evans
Tape the joint on the underside works well.
Re: 1/4 Scale Salto
Posted: 04 Mar 2021, 09:16
by roo Hawkins
Mine has a cup hook in each tail plane with a elastic band between the two going through the fuselage.
Re: 1/4 Scale Salto
Posted: 26 Mar 2021, 22:58
by mjcp
Peter Balcombe wrote: ↑13 Jul 2020, 12:08
With the outstanding lower rear spar inserted to complete the basic framework, attention turns to the joiner assembly.
This is made up using interleaved brass tubes and 3mm spacers, epoxied together to form a solid block as shown.
Note that the joiner assembly needs to be cleaned up to reduce its overall thickness to that of the joiner tubes (16mm) as it will be a very neat fit between the spars at the outer end, so any thicker & the upper spar will not sit down correctly.
Any thoughts on a 1.5mm bar instead of the 2mm ? (with corresponding thinner box, yes, there would need to be some packing adjustment)
Gliders are out of stock of 15x2 / 16mm box, but I've located some 15x1.5 / 16mm box ...
(I note my Pik 20 uses a single 15mm bar with its wider wings!)
M
Re: 1/4 Scale Salto
Posted: 27 Mar 2021, 08:58
by Peter Balcombe
Marc,
I would think that if the material is a similar carbon steel, then 2 x 1.5mm blades would probably be ok as I think the 2 x 2mm are possibly a bit of overkill.
I used twin blades & what I hope is a strong wing to stand up to the spirited aerobatic manoeuvres that a Salto might be put through.
I would think it best to put any spacer between the 2 blades to make the joiner area the same width as I think this will help structurally.
Maybe any ex-structural engineers may like to comment?
Re: 1/4 Scale Salto
Posted: 27 Mar 2021, 12:16
by mjcp
It’s the same box and bar as the gliders stuff.. just this is in stock!
Re: 1/4 Scale Salto
Posted: 29 Mar 2021, 09:20
by mjcp
Thanks for your previous answers Peter!
Another day... another question!
Did you stick with 0.4mm ply and glass or did you go with the suggestion of 0.6mm or the drawn 0.8mm sheeting for the wings?
Did you add any carbon to the spar ?
TIA!
Marc
Re: 1/4 Scale Salto
Posted: 29 Mar 2021, 10:10
by chris williams
mjcp wrote: ↑27 Mar 2021, 12:16
It’s the same box and bar as the gliders stuff.. just this is in stock!
Where did you get it, Marc...?
Re: 1/4 Scale Salto
Posted: 29 Mar 2021, 10:31
by mjcp
chris williams wrote: ↑29 Mar 2021, 10:10
mjcp wrote: ↑27 Mar 2021, 12:16
It’s the same box and bar as the gliders stuff.. just this is in stock!
Where did you get it, Marc...?
Price gouged* on FleaBay:
https://www.ebay.co.uk/itm/Brass-Steel- ... 3929524616
*Ok, not gouged, but more expensive.... Gliders: £18 + shipping, but out of stock, Seller above, £28 shipped.
Marc
Re: 1/4 Scale Salto
Posted: 29 Mar 2021, 11:24
by chris williams
Crikey... (or words to that effect)
Re: 1/4 Scale Salto
Posted: 29 Mar 2021, 11:34
by Cliff Evans
mjcp wrote: ↑29 Mar 2021, 10:31
chris williams wrote: ↑29 Mar 2021, 10:10
mjcp wrote: ↑27 Mar 2021, 12:16
It’s the same box and bar as the gliders stuff.. just this is in stock!
Where did you get it, Marc...?
Price gouged* on FleaBay:
https://www.ebay.co.uk/itm/Brass-Steel- ... 3929524616
*Ok, not gouged, but more expensive.... Gliders: £18 + shipping, but out of stock, Seller above, £28 shipped.
Marc
I think you will find that this is Gliders Ebay shop, both in Newark! If so, bit of a price hike!!