dozerash Posted November 29, 2020 Report Share Posted November 29, 2020 I’m thinking of building a air cooled mono. I have an extra rebuildable Rotax 280 trials engine and exhaust. Just need a mono chassis. Any recommendations? Quote Link to comment Share on other sites More sharing options...
jonboy883 Posted November 29, 2020 Report Share Posted November 29, 2020 Old Beta TR34 chassis, or JCM's chassis would be a good starter. JCMs , you can't give away at the moment, if you can find one, so a good cheap option. If not what about a TY mono chassis, loads around and possibly easy modded! Quote Link to comment Share on other sites More sharing options...
b40rt Posted November 29, 2020 Report Share Posted November 29, 2020 The easiest would be an Aprilia tx / txr as the motor fits straight in. Quote Link to comment Share on other sites More sharing options...
dozerash Posted November 29, 2020 Author Report Share Posted November 29, 2020 I wonder how much different my engine mounts compared to a Aprillia Climber? Quote Link to comment Share on other sites More sharing options...
b40rt Posted November 29, 2020 Report Share Posted November 29, 2020 (edited) 4 minutes ago, dozerash said: I wonder how much different my engine mounts compared to a Aprillia Climber? Bottom half the same, no problem. Climbers engines can be converted to air cooled. Edited November 29, 2020 by b40rt 1 Quote Link to comment Share on other sites More sharing options...
dozerash Posted November 29, 2020 Author Report Share Posted November 29, 2020 27 minutes ago, b40rt said: Bottom half the same, no problem. Climbers engines can be converted to air cooled. Thanks! That’s good to know! I had a early nineties 280 Climber and remember the bottom end was similar. 2 Quote Link to comment Share on other sites More sharing options...
dozerash Posted November 30, 2020 Author Report Share Posted November 30, 2020 On 11/29/2020 at 2:02 PM, jonboy883 said: Old Beta TR34 chassis, or JCM's chassis would be a good starter. JCMs , you can't give away at the moment, if you can find one, so a good cheap option. If not what about a TY mono chassis, loads around and possibly easy modded! I’m from the States, I’ve never heard of JCM? Quote Link to comment Share on other sites More sharing options...
jonboy883 Posted November 30, 2020 Report Share Posted November 30, 2020 It's a French make, only for a couple of years, never really took off, and not overly popular. Nice looking and good spec, avoided now as too limited to get spares etc. https://www.classictrialsgb.co.uk/jcm https://www.pressreader.com/uk/classic-trial/20151201/281681138803178 dont use the Aprilia frame, that would just be a rebuild with another engine. Make a mono special, something individual and unique! Quote Link to comment Share on other sites More sharing options...
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