Post by Peter Seager-Thomas on Nov 10, 2012 17:39:39 GMT -5
At present I am as ever devoting a fair bit of time to a pointless project, that of a proper differential for the Delage.
The diff itself is more or less planned. The star gears being fine tooth Carrera, which came with some spare D Type axles I bought, with the planet gears being suitable mesh pinions which came with some motors I bought. The problem is the crown wheel.
I have an old Airfix Vanwall crown wheel/contrate which comes out at about 16.5mm O/D. In theory it will be fine, but the large diameter intrudes on the space needed by the final drive housing on this rather narrow car.
My need is for spur gears as might be used on a sidewinder, but not the 30+mm diameter of those normally supplied. Are such gears available in perhaps 24T options?
Sidewinder spur gears of small diameter are available but when you mentioned 24 tooth my mind went to a cox gear. Problem here is the 1/8" ID. If you used a matching pinion then a small diameter spurgear in 64 pitch might work but I cannot visualize your differential setup to make further suggestions. Regards
Peter, you might find the tiny gears you require from Conrad's (or is it Konrad's?) in Germany. They seem to specialise in model truck stuff and stock an impressive variety of bits. There are people in Germany building radio controlled HO trucks, so I'm sure you could find anything miniature for your transmission amongst their number.
As I eye the upcoming VRAA proxy, I'm wondering what is currently available in the way of tiny crown gears, entire gear-trains, etc. I'm somewhat considering looking into HO running gear, but that would cause a cascade of compatibility issues.
What has happened in the gear department since 2012?
Post by Andrew Rowland on Mar 27, 2016 4:45:52 GMT -5
I use Wizzard HO gears from the US. Lovely silicone bronze crowns in all the teeth sizes. Compatible pinions. Only issue is the 1.5mm bore on the crown needs to be drilled out. No grub screw fixing means that needs to be done well to get the correct fit or solder on a grub screw collar....