I have been wanting to chop a bike up for some time now. The bike I actually want to do it to though is a hard to find frame and once I start to plan something I overthink it and stuff never gets done (the build thread section is filled with my unfinished projects....this may just become another one of those :doah
. Not to mention I have never been much of a fabricator so before I 'Eff up a rare frame I better play with something post '70 that's not real notable in the minibike world.
So I had this Powerdyne, I bought it in a package deal along with a Rupp/Penneys "swinger trail" that was bought solely to part out. I did much better than expected on the parts and am still have more to sell so that makes this bike free, plus a surplus
dyne's have alot of space between the rails, I have been on the hunt forever for actual early frames that were setup more for 2 stroke kart engines, but have not had much luck finding anything, and I simply don't like all the open space if you put one on a standard frame:
so without much thinking I broke out the saw :doah:
Now I have been thinking about this on a different frame, that bike has a single downtube and the angles are almost a dead match front/rear, so actually to do that bike it would have been very simple.
I didn't factor in the angles of the front tubes on this bike till AFTER I cut it and and noticed the difference :1orglaugh: plus I plan on pulling 3+ inches out of it!!!
Sleeving it together is no big deal, I however am not a real big fan of working on headtubes personally only because I'm a shade tree welder, so I do want to avoid having to cut the tube off.
So been thinking I will probably make cuts somewhere on the bottom before the engine plate so I can turn the lower section inward and I am going to cut the lower reinforcement bracket off the headtube and cross my fingers that I can twist the downtubes a little outward without taking the headtube loose.
worst case I guess i could pull the tube and spread the frame and sink the tube in a little to make the space.
overall plans are to get this cut down to the point that a 2-3hp briggs could be slid in but be tight enough that the plug will have to come off the bike in order to do it, so its not limited to just a 2 stroke. for forks, I planned to simply cut the fork lowers down to go with the frame, and possibly take the cut section of tube and sleeve it onto the handlebars raising them a couple of inches OR I have these cool Rupp continental forks that are chrome which the tree spacing is just right to use and i could cut them down if I can get the springs off the lowers.
and yes I have done frame repairs before I already have some tubing that fits the ID of the frame snugly which will get installed and welded at all cuts :thumbsup:
. Not to mention I have never been much of a fabricator so before I 'Eff up a rare frame I better play with something post '70 that's not real notable in the minibike world.So I had this Powerdyne, I bought it in a package deal along with a Rupp/Penneys "swinger trail" that was bought solely to part out. I did much better than expected on the parts and am still have more to sell so that makes this bike free, plus a surplus
dyne's have alot of space between the rails, I have been on the hunt forever for actual early frames that were setup more for 2 stroke kart engines, but have not had much luck finding anything, and I simply don't like all the open space if you put one on a standard frame:
so without much thinking I broke out the saw :doah:
Now I have been thinking about this on a different frame, that bike has a single downtube and the angles are almost a dead match front/rear, so actually to do that bike it would have been very simple.
I didn't factor in the angles of the front tubes on this bike till AFTER I cut it and and noticed the difference :1orglaugh: plus I plan on pulling 3+ inches out of it!!!
Sleeving it together is no big deal, I however am not a real big fan of working on headtubes personally only because I'm a shade tree welder, so I do want to avoid having to cut the tube off.
So been thinking I will probably make cuts somewhere on the bottom before the engine plate so I can turn the lower section inward and I am going to cut the lower reinforcement bracket off the headtube and cross my fingers that I can twist the downtubes a little outward without taking the headtube loose.
worst case I guess i could pull the tube and spread the frame and sink the tube in a little to make the space.
overall plans are to get this cut down to the point that a 2-3hp briggs could be slid in but be tight enough that the plug will have to come off the bike in order to do it, so its not limited to just a 2 stroke. for forks, I planned to simply cut the fork lowers down to go with the frame, and possibly take the cut section of tube and sleeve it onto the handlebars raising them a couple of inches OR I have these cool Rupp continental forks that are chrome which the tree spacing is just right to use and i could cut them down if I can get the springs off the lowers.
and yes I have done frame repairs before I already have some tubing that fits the ID of the frame snugly which will get installed and welded at all cuts :thumbsup:
