MOPED ARMY

Nice work! I'm sure that this same idea could be applied to using other, not as insanely expensive, shocks as well. This would also free up some space for mounting disk brakes in the rear as well. Though you'd have to make sure to make the swing arm super duper strong as well.

Nice fab work and good job re-using linkage from the bike you took the shock off.

Only huge drawback is now your swingarm is 6 inches longer and so is your wheel base, will make turning a lot more work. Who knows the longer wheel base and the fact it now puts the rider closer to the center of the wheel base will improve handling?

I picked up an cheep sportbike shock awhile ago to do this exact same thing, I plan on mounting the shock on the outside of the swingarm though so you would not need to extend the swingarm.

Let us know how she rides.

For those thinking about giving this a try you could save some time and money by doing it linkless.

Its sick that you used the linkages! Looks good man! that longer wheelbase will sure be stable when the roads get shitty.

Linkless would cause you to lose the progressive feel of the rear. The linkage amplifies the motion of the swingarm to the shock, I'd have to do the math but I think its like 3:2 ratio.

Also without that motion amplification of the linkage, using that shock just won't feel the same, on a bike this light though, it may not matter.

I was told the forks are from a CRF50, but to me they just don't seem right for that. They are just too long, actually the same as Magnum length. The steering stem was a little smaller than the Puch stem, but the bearings and races it came with worked well with the Puch bearing cups.

The big problem I had when mounting the triples, was the steering stem was waaaaaaaaaaaaaaaaaay too short for the Magnum frame steering head. Rather than press the short stem out and bore the triples to press fit a Magnum stem, I chose to cut the frame head down about 1" on the bottom and 1/4" on the top. The top and bottom bearing races were also shaved down about another 1/8" on each. I ended up welding my own block onto the Magnum frame for a steering stop.

After tigntening the bearing nut on the stem, the installing the top triple I was able to get about 4 turns on the top nut. I was told once that 2.5 turns is enough for Detroit-manufactured vehicles so I think 4 turns is mighty good for me!

Who cares about progressive rate? That all depends on how and where you want to ride it! Moped or not, haha.

I have some friends that tease me about riding a Ninja 250, too, until we are out in the twisty backroads where anything 600cc ahd up just can't compete! The Hayabusas and ZX-14s are all getting passed by me on the OUTSIDE of a turn. One guy who was actiually making fun of me hardcore earlier that day was whining "its not fair" later that night.

So I highly prefer a smallish bike that handles tight, the progressive rate and damping advantage should stop the wheel from hopping across the pavement in a rear turn and killing myself. It sucks to die on a motorcycle, its lame to die on a moped!

its all about the weeeeeeeee factor! I wanna go weeeeeeeeeeee!

and no I don't expect to race this thing against real sportbikes.

Thats what this is for:

Thanks for the compliments! That sportbike killer weighs about 230lbs or so, lol. Its also a 2-stroke built around a CR500 engine in an all aluminum CR250 frame with lots of other odds and ends bolted on or made to fit. Its going to be a lot of fun!

I know exactly what you mean about the small bikes. I ride my RS250 with liter bikes all the time. As soon as it gets twisty, i say bye lol. We had a guy come ride with us on a motarded out crf450. He obliterated the big bikes as soon as it got tight.

It took me for awhile to find one. I had to go to texas to get it(Im in oregon). It will take a lot for me to giver her up lol

you're going to have to put some biiiiiig tires on that magnum if you want to get a knee down..