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Gears
Nov 10, 2012 17:39:39 GMT -5
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?
Many thanks for any replies, Peter.
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Gears
Nov 10, 2012 20:22:05 GMT -5
Post by munter on Nov 10, 2012 20:22:05 GMT -5
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
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Gears
Nov 11, 2012 4:14:19 GMT -5
Post by Peter Seager-Thomas on Nov 11, 2012 4:14:19 GMT -5
Hi John.
I did not of course mean 30+mm diameter, but 30+teeth.
The I/D is not important since the gear will be bored out anyway.
I will I think be best if I produce some kind of drawing and post it, then folk will be able to see what my actual needs are.
Peter.
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Gears
Nov 19, 2012 7:54:32 GMT -5
Post by slo on Nov 19, 2012 7:54:32 GMT -5
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Deleted
Deleted Member
Posts: 0
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Gears
Dec 27, 2012 7:21:44 GMT -5
Post by Deleted on Dec 27, 2012 7:21:44 GMT -5
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.
Martin
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Gears
Mar 26, 2016 12:04:58 GMT -5
Post by datto on Mar 26, 2016 12:04:58 GMT -5
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?
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Gears
Mar 27, 2016 4:45:52 GMT -5
Post by Andrew Rowland on Mar 27, 2016 4:45:52 GMT -5
Datto
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....
Cheers Andi
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Gears
Mar 27, 2016 7:30:28 GMT -5
Post by Phil Kalbfell on Mar 27, 2016 7:30:28 GMT -5
Like Andi I have some Wizzard gears bored out and Grub screw hubs fitted. But so far I have managed to be able to use Slot It 23 or 24 tooth crown gears, and get them in the body work or gear box.
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Gears
Mar 27, 2016 15:38:16 GMT -5
Post by datto on Mar 27, 2016 15:38:16 GMT -5
Thanks for the replies! Using the Wizzard gears sound interesting. How do you keep the gear and hub concentric during soldering?
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Gears
Mar 27, 2016 16:11:01 GMT -5
Post by Phil Kalbfell on Mar 27, 2016 16:11:01 GMT -5
The Wizard gears are Bronze and very hard to solder. I used a turned down old brass gear hub and bored the Wizard gear to suit,then press fitted the two using a Retaining Compound.
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