MGR Hooper! Posted December 17, 2020 Share Posted December 17, 2020 Hey, I am looking for a supplier for rubber/nitrile belts for quite a few HO/OO scale mechanisms that I have that use a belt drive. I've added a 3D rendering of the size of belts that I need, and I am listing dimensions of the belt these mechanisms currently use:- - Outer diameter = 9.0mm - Inner diameter = 8.2mm - Thickness of the belt = 0.8mm (but I would prefer a 1.0mm thick belt) Sorry I cannot posts actual pics of the belts I have as they aren't with me right now, hence the 3D CAD drawing of them. If anyone can point me in the right direction, I'd be most greatful. TIA Link to post Share on other sites More sharing options...
AndyID Posted December 17, 2020 Share Posted December 17, 2020 I don't know if this would work but you might be able to cast them yourself in silicone (RTV). I use silicone tube to make constant velocity joints and it seems to stand-up quite well. It might also be possible to cast them in polyurethane which might last a bit longer. 1 Link to post Share on other sites More sharing options...
Giles Posted December 17, 2020 Share Posted December 17, 2020 Your dimensions give a belt thickness of 0.4mm - unless you were referring to the width of belt as 1mm? 1 Link to post Share on other sites More sharing options...
RMweb Premium Andy Hayter Posted December 17, 2020 RMweb Premium Share Posted December 17, 2020 Having had a belt fail some years ago on an old Jouef model, I would suggest that you look to find if there is a traction tyre that is about the same size. Worked for me and going strong some 30 years later (touch wood) 1 Link to post Share on other sites More sharing options...
RMweb Premium Izzy Posted December 17, 2020 RMweb Premium Share Posted December 17, 2020 Nigel Lawton supplies chloroprene drive belts in a range of sizes which can be stretched up to 10%. Just 0.6x0.6mm cross section but two together might work. Izzy 1 Link to post Share on other sites More sharing options...
billbedford Posted December 17, 2020 Share Posted December 17, 2020 O-Rings? Link to post Share on other sites More sharing options...
MGR Hooper! Posted December 18, 2020 Author Share Posted December 18, 2020 19 hours ago, Andy Hayter said: Having had a belt fail some years ago on an old Jouef model, I would suggest that you look to find if there is a traction tyre that is about the same size. Worked for me and going strong some 30 years later (touch wood) I will try these first as Peter's Spares has some 7.5mm traction tyres. 17 hours ago, Izzy said: Nigel Lawton supplies chloroprene drive belts in a range of sizes which can be stretched up to 10%. Just 0.6x0.6mm cross section but two together might work. Izzy Thanks Izzy, will keep this as plan B for now. 12 hours ago, billbedford said: O-Rings? Thank you so much. I will definitely consider this for bulk purchases in future. Link to post Share on other sites More sharing options...
DCB Posted December 18, 2020 Share Posted December 18, 2020 (edited) On 17/12/2020 at 09:50, Andy Hayter said: Having had a belt fail some years ago on an old Jouef model, I would suggest that you look to find if there is a traction tyre that is about the same size. Worked for me and going strong some 30 years later (touch wood) I also used traction tyres to replace the belts on Jouef mechanisms. Can't comment on life expectancy as I sold the locos on ASAP. O rings really have the wrong as in circular section for a drive belt. Edited December 19, 2020 by DavidCBroad Typo 1 Link to post Share on other sites More sharing options...
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