LouisB

The props I could get have 5mm holes and the bolt on my TD measures 3mm - what would you advise me to do?

TIA

Mr Cox

A piece of fuel line is often enough. There is no load there, you only need a guide in order for the prop to be centered while tightening the screw.

shd3920

You didn't say if it was an electric or not but if it is you can use one of these prop adapters.

Mounts on electric motors with a 3mm shaft and adapts them to a 5mm diameter prop shaft.

http://www3.towerhobbies.com/cgi-bin...&I=LXMSG2&P=ML

Mr Cox

I would guess that TD stands for a Cox Tee Dee engine (?), prop screw is not metric but close to 3mm in diameter...

digital_trucker

Ayup, a slice of fuel tubing will do the trick.

ffkiwi

Graupner make prop adapters in a range of sizes for adapting various sized prop holes to various sized shafts. If you have a graupner agent in SA, ask them-if not, Hobby Lobby should have them in stock. Campbells Kits do several for the TD, but I'm not sure if they have a 5mm OD. Incidentally the Cox 049 shaft thread is 5-40 not a metric.

'ffkiwi'

lildiesel

I usuallly sleeve the prop hole down with aluminum tubing. Some times it takes a couple of short pieces of decreasing size to get down to 1/8" ID, which matches up nicely to the 5/40 Cox prop screw or stud.