My 2000 KZP project bike! First timer, but all out

The main issue is that our primary is too far inboard creating an angled chain path...

I run a 190 tire on a 750. I opted for a 520 non oring chain for width purposes. I moved my rear tire to the right about 1/4". Made my front offset sprocker which is 22mm wide. Not sure what offset that would be.

I'm running a 180 on a 6" rim, 5/8" offset sprocket, wheel offset 0.170", shaved the cush drive about 0.300" and have a solid 0.200" clearance everywhere except at the foot peg mount. Didn't seem worth it to try to run the 190.

I would line up the rear wheel as best you can (very important step), then clamp something as straight as possible to the rear sprocket to get an idea how much offset you need/can tolerate. You'll likely find that much offset will send the chain into the frame. Then measure the straight edge to the tire to see if you have any room there, accounting for the chain width and clearance of course. Be mindful of which side of the sprocket you're measuring from. Subtract the rear measurement from the front and hopefully you're in line to buy a standard 5/8" offset sprocket and shave a little off the cush drive. Hopefully you're looking at better clearances with a 2000 KZP.

Whether or not your swingarm can safely be trimmed is your call. Be sure to account for swingarm travel when making cuts. A string connected to the outside of both sprockets while you move the swingarm up and down would help. Lets you see everything the chain might hit.

here is a lil diagram to help with figuring the front sprocket offset.




hth,
leon

There's a maximum offset than can be safely fitted without requiring support on the outboard side of the sprocket.

Let us know when the exact amount of needed offset has been determined.
Members well-experienced in this area will have more specific advice as to when outboard support becomes necessary.

Good Fortune!

Is a 5/8ths offset too much? That's the sprocket we ordered...

You can run a 5/8" without an outboard support plate. The rest is going to be a matter of using a lathe to cut back the sprocket mounting face of your rear wheel cush drive carrier and possibly (and likely....) adjust your rear tire position relative to the centerline of the bike to the right hand side to aide in chain alignment and chain clearance. Most find a minimum of 4-5mm is safe for chain to frame and chain to tire sidewall clearance. Some have found based on their combination of parts that the frame was notched to allow more offset in the chain line to help have a more centered rear tire with the wide modern rubber. I am running a 180 on a 5.5" rim with a 5/8" offset front sprocket, .210" cut back cush drive carrier, and my rear wheel offset to the right around .250". I have about 5mm on either side of the chain using a large 530 O Ring chain. FWIW...

Cory

While the sprockets should be perfectly aligned in the same geometric plane, the rear tire may be in a different geometric plane.

The rear tire should be aligned in the sense of pointing in exactly the same direction as the front tire, but when rolling straight down the road, the center-line of the rear tire need not track directly over the front tire's center-line.

Not unusual to see this on new showroom bikes with fat stock rear tires.

Tires --


Good Fortune!

Thanks for the tips! Will update soon...

tucsonKZ1kP wrote: Anybody have any experience with lining up the rear sprocket to front sprocket and how to deal with those complications? Here is our problem if you can see from the pic....

If you search my name I have a similar thread specific to the the alignment. Like mine your rear sprocket is positive offset rear. So in your case remove the rear sprocket flip it around and now you have a negative offset rear sprocket.

Got some updates. So we ordered a powder coating kit and bought a cheapy oven off craigslist for 60 bucks. The coating we got is colored nearly the same as the engine block so it matches very well. Kind of hit a stand still at the moment because of being busy with other stuff. The motor re-assembly is going well too.

Also got the front end all sorted...

My dad's machining background came in handy. Notice the little aluminum trim piece.