Serafumi Posted July 5, 2022 Posted July 5, 2022 Morning all . Has anyone welded on a stock subframe back onto on a slingshot frame ,dad cut the original off in the 90s , but as I want to keep the original reg number for frame , I got a second hand frame with lock stop damage, but subframe is good . I planned to cut it off and have it welded onto dad’s original frame . If it’s a bad idea please give me other options. I want to run stock style rear unit Quote
Tony Nitrous Posted July 5, 2022 Posted July 5, 2022 48 minutes ago, Serafumi said: Morning all . Has anyone welded on a stock subframe back onto on a slingshot frame ,dad cut the original off in the 90s , but as I want to keep the original reg number for frame , I got a second hand frame with lock stop damage, but subframe is good . I planned to cut it off and have it welded onto dad’s original frame . If it’s a bad idea please give me other options. I want to run stock style rear unit Not personally, but I’ve snapped a subframe lug off an alloy frame and had it welded back on again. After many years of abuse it’s still solid. I’d be surprised if a good welder couldn’t do it. 1 Quote
Serafumi Posted July 5, 2022 Author Posted July 5, 2022 16 minutes ago, Tony Nitrous said: Not personally, but I’ve snapped a subframe lug off an alloy frame and had it welded back on again. After many years of abuse it’s still solid. I’d be surprised if a good welder couldn’t do it. I was thinking , as long as I take measurements and pictures, it shouldn’t be too difficult to get correct . Quote
davecara Posted July 5, 2022 Posted July 5, 2022 I've had a slingy subframe welded to a slabby? Dead solid. Easy enough job for a competent welder 3 Quote
Joseph Posted July 5, 2022 Posted July 5, 2022 (edited) Bear in mind the slingshot frame has stubs moulded into the frame, that the subframe tubes push onto before being welded. Obviously this was for strength purposes, should be able to do without but worth mentioning. You could always reweld the stops on the new frame, weld fill the frame number stamp and restamp it Edited July 5, 2022 by Joseph Quote
clivegto Posted July 5, 2022 Posted July 5, 2022 Yea but that's not his dad's frame and would make it Triggers brush . 3 Quote
Devilman Posted July 5, 2022 Posted July 5, 2022 (edited) 14 hours ago, Serafumi said: Morning all . Has anyone welded on a stock subframe back onto on a slingshot frame ,dad cut the original off in the 90s , but as I want to keep the original reg number for frame , I got a second hand frame with lock stop damage, but subframe is good . I planned to cut it off and have it welded onto dad’s original frame . If it’s a bad idea please give me other options. I want to run stock style rear unit Depending on where you're located and if the frame you have with the damaged lockstop's is in re-sellable condition, I do have the subby from my 750J (slingshot) which I cut off from the frame as close as I could get to the main frame rails, so has retained most of the "thick bit" that's sleeved inside the subframe tubing If you're interested in it, you could then sell off the "donor" frame you have. Just a thought, as I kept the old subby kicking around in the garage Edited July 5, 2022 by Devilman Quote
dupersunc Posted July 5, 2022 Posted July 5, 2022 14 hours ago, Serafumi said: I was thinking , as long as I take measurements and pictures, it shouldn’t be too difficult to get correct . Your Dads bike was an M model originally wasn't it? Bare in mine the M sub frame is slightly different to earlier subframes. 1 Quote
Devilman Posted July 5, 2022 Posted July 5, 2022 51 minutes ago, dupersunc said: Your Dads bike was an M model originally wasn't it? Bare in mine the M sub frame is slightly different to earlier subframes. Aaah is it? In that case my previous statement / offer may not be of much use as the subby I have is from a J model. Quote
Serafumi Posted July 6, 2022 Author Posted July 6, 2022 8 hours ago, dupersunc said: Your Dads bike was an M model originally wasn't it? Bare in mine the M sub frame is slightly different to earlier subframes. Yes it’s an M . The frame I have I believe is an M . But I will check the number .. dad had a one piece M rear solo seat unit .. so I think it would work with any slingshot subframe .. Quote
Serafumi Posted July 6, 2022 Author Posted July 6, 2022 9 hours ago, clivegto said: Yea but that's not his dad's frame and would make it Triggers brush . Exactly that . I remember him buying the bike when I was a teenager .. so frame has to stay 2 Quote
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