turn buckles and tank straps

[RichardT10829]

Excelent stuff Lynn.... i need to make some more floor T peice brackets for my straps as the ones in the hull are a shadow of their former self !

[Ben]

I need to make some too. I suspect that it's quite common that they rot out.

I think I'll make a program and get a load made on the cnc mill.

Ben

[Lynn Eades]

The originals were cast. Is the CNC mill the quick/ cheap way to do them?

[Ben]

I don't know? I'd need to see a good original to measure to be sure. I'd prefer them to be cast if that's what they were originally. Casting will probably be cheapest if there is a bulk quantity.

Ben

[Nigel Watson]

Lynn it is uncanny as today I received an item purchased from Ebay. A turnbuckle. It was designated RAF type AGS 141 ABC 15-20cwt 3.25". It looked and is very close to the carrier parts manual. So I googled it and came up with an aero company over here that had turnbuckles but not with the same AGS numbers.

I went back to the trusty parts manual and read the details more closely to find the detail CO1UC 105114 TurnBuckle - Fuel Tank Connections (UK No. MT15/ AGS-492 BCE). The company have thesebut they are not only very expensive but the body is parallel instead of being tapered slightly at each end. The BCE refers to the thread direction of the end-body-end.

The one I got from Ebay is almost exact. Incidently it was described as having been used on the Gloucester Gladiator around 1937! Why manufacture if there is one already being made?

So if anyone is successful in tracking down the Gadiator stores please let me have 3.

Nigel

[RichardT10829]

i have the correct dia brass bar to turn down buckles but would need one to copy. pretty easy to make methinks.....

[Ben]

I've got two straps both almost identical, ones British TL stamped (bottom) the other Canadian CTL stamped (top) they are both spot welded so i'm not sure when the change happend from riveting?

[RichardT10829]

Originally Posted by Lynn Eades

The originals were cast. Is the CNC mill the quick/ cheap way to do them?

Lynn i have been pondering on this one i reckon casting is the best way.. you could cast the triangular base then drill it and slide the retaining bar through for the strap. then when its under tension it will be held in place ? dont know seems the easier way to me though

[Lynn Eades]

You'd better try again Rich. I don't follow what you're trying to tell me.
We are talking about the little square bracket that rivets to the floor with 4 rivets. It has a central lug that connects to the strap, with a pin. Your turn.

[Ben]

As soon as the one Lynn has lent me arrives I'll make a new pattern and get some cast.

Ben

[RichardT10829]

yes thats the bit..... i was refering to the comment if CNC or casting was the way forward for reproduction. so my thoughts were casting was the way forward.... however pending on what tools Ben has access too CNC may be the way forward ? dont know..... was just spit ballin