badams Posted December 26, 2013 Report Share Posted December 26, 2013 Has any one fitted a mono swing arm to a twin shock framed bike? I am thinking about this and installing twin shocks on the mono swing arm. Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted December 26, 2013 Report Share Posted December 26, 2013 I seem to remember that Woody had a Majesty with one fitted a while back but I may be wrong ? Quote Link to comment Share on other sites More sharing options...
zerorev3rev4 Posted December 26, 2013 Report Share Posted December 26, 2013 What are you trying to achieve do you mean mono alloy swing arm Quote Link to comment Share on other sites More sharing options...
bestrcpilot Posted December 26, 2013 Report Share Posted December 26, 2013 (edited) And which twin shock Yamaha ? I tried to fit a mono swimg arm to a TY175, but found it to long and ended up using a DT175 swimg arm and moved the pivot point forward . Edited December 26, 2013 by bestrcpilot Quote Link to comment Share on other sites More sharing options...
woody Posted December 26, 2013 Report Share Posted December 26, 2013 Yes, OTF, I had one on a Majesty 320. Reasons I did it were several The Majesty had been modified with a steeper head angle (and I wouldn't do that again either) and was fitted with mono forks. The result was a shorter wheelbase, even with the leading axle forks, so the swingarm needed to be lengthened. I had several choices, lengthen the standard swingarm, get another to lengthen or, I had a mono swingarm which I could modify to fit. I didn't want to ruin thae standard one, couldn't be bothered to wait for another t/s arm to come along to lengthen so I decided to use the mono item. Plus, the Majesty rear hub was broken all around the flange, so I could use the mono wheel with the swingarm (as I had a complete mono in the shed, fit for only breaking) And finally, it was an easier job for me, with limited welding / fabricating skills to make the mono fit. The mono arm is way too long in its standard length. I cut the front pivot mounts off, far benough back to give the length I wanted. Welded on a tube, same ID and OD as the original to utilise standard bushes / tube, spindle etc. Made up mounts for the shock mounts and in it went. Would I do it just for the sake of it? No. Basically, a swingarm is two sticks of metal attached to the frame one end and carrying a wheel and shock mounts at the other. There is no advantage at all in replacing the standard arm with one from the mono. I did it for a reason, as above, but it didn't work any better than a standard swingarm lengthened. It was still just two sticks of metal etc. Unless you've a specific reason for doing it, it really isn't worth the bother and will offer no advantage at all. Quote Link to comment Share on other sites More sharing options...
badams Posted December 27, 2013 Author Report Share Posted December 27, 2013 It is a 76 ty 250. I have installed the ty mono front end on it and was thinking of using the mono swing arm and rear hub. Why to save a little weight and to be different. I am the same as woody I have a mono parts bike kicking around so why not. I have seen a few mono's with twin shocks fitted. So I was thinking of fitting mono parts to the twin shock frame. Save a little weight and still be able to ride in the vintage class hear in Canada. Quote Link to comment Share on other sites More sharing options...
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