suerose Posted December 21, 2014 Share Posted December 21, 2014 Hi I have a Portascap RG7 motor for O gauge, but I have lost the gear which fits the 3/16" axle, also I don't know what the ratio of the motor is. It is marked 22N 28 210E 3. I wonder if such a gear is available from any sources. I have bought RG4 ones from Ultrascale Letchworth gears in the past but they list nothing with the 3/16" centre hole. Any help would be very much appreciated. Regards Sue & Dave Rose Link to post Share on other sites More sharing options...
Horsetan Posted December 22, 2014 Share Posted December 22, 2014 Apparently there was a choice of 23:1 or 31:1 ratios for the RG7. Click here Link to post Share on other sites More sharing options...
suerose Posted December 22, 2014 Author Share Posted December 22, 2014 Hi, I knew there were two ratios which makes it even more difficult as there seems no way of telling what the original ratio is. Anybody with ideas welcome regards, Sue Link to post Share on other sites More sharing options...
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