Provost

As you may know Glens models hinges are similar. They use large diameter brass tube - It doesn't get sloppy but it migrates.
I think plastic bushes & piano wire is the way to go. An equivalent to the old micro mold snakes made for bowden cable inners would make a good bearing material.
My Decathlon (which i will have at Cashmoor tomorrow) uses 3mm carbon rod on ply hinges.

Flaps are similar construction but this time they are hinged on the bottom, thanks for the suggestion Phil and.Kevin,anybody got some snake.off cuts?

Forgot to say I'm going to use 3mm carbon rod for the hinge pin so the snake outer will have to fit that

What about very small shielded ballraces - the type fitted into some of the small brushless motors could work.

Ron

flyingpete wrote: Forgot to say I'm going to use 3mm carbon rod for the hinge pin so the snake outer will have to fit that

Wouldn't piano wire be better than carbon Pete, I would be worried carbon might wear over time? Small diameter snake outer would be a good option for the bearing though.

Thanks guy's, I'm open to all suggestions frank is bringing over tomorrow a selection of tubing etc so I will have a look at that.
I'm really enjoying the provost, it's a real builder's model which I love.The scale detail shown on the drawing is awesome and I want to reflect this in the finished model

That's speedy work there, very impressive. Did you use aliphatic to butt join those balsa skins? I would have thought regular pva would be difficult to sand smooth.

Modelfixings sell a range of small bearings, you might find something of use there if you go that route.

Keep those pics coming

Alan, i use a top quality pva as it sands very well

I just remember having a nightmare sanding balsa glued with pva, and I cant remember which brand it was, evo stik resin w or deluxe materials or some such but, having switched to Titebond I found sanding much easier.

Packed some samples for you to asses tomorrow Pete.

But looking at the last photos you posted, Piano wire & tube will be good for the twiddly bits at the end go the wing but the slowy downy bits will need some form of captive pin for which I have a cunning plan