TOPIC:

I had to machine my sprocket carrier down a little so I could run a 5/8" offset cc sprocket. I would've had to use a 170 width tire on a 5 1/2" rim to use a 1/2" offset ( I also flipped my rear sprocket so the dish was to the inside ). I think it also depends on the swingarm clearances you have as well. Machining the carrier helped open the gap between the tire and swinger on the right side. Once again, a thinner rim would have made it a bit more manageable, but my frame clearances are acceptable (provided, I only ever run a non-o-ring chain).

GSX 750 1990 swingarm with a 5'5 rim and a 180 tyre.
Oring 530 chain and 5/8 offset sprocket and rear flipped.
No frame altercations and chain runs within less than a combined 5mm gap from frame and tyre. No damage other than taking the paint off the frame. 11000 k's

thx for the replies......will try flipping the rear spocket and remeasure.

Soooo...... How is the clearance working out? We have an almost identical suspension build. Please post what you find. If I beat you to it this weekend I will do the same.
Oops nope our front ends are similar not the rear.

Well beside needing a 5/8" front sprocket not much else.
Have to much work and it's a little to cold for me in the shed.
Let me know what u find

spdygon wrote: Well beside needing a 5/8" front sprocket not much else.
Have to much work and it's a little to cold for me in the shed.
Let me know what u find

As soon as I can figure out how to get the pivot bearings out of the swing arm to replace them I will be able to get my sprocket alignment figured out.

on the one pic u can see were the battery bracket is only hanging from frame....im thinking of drilling throught bracket and frame so to bolt it and be able to remove......thoughts?


so better weather here.....go in the shed for several hours today.
so did flip the rear spocket and now i need a 1/2" front spocket....cool
also work on the battery location...done

lost internet connection and my post is a mess

spdygon wrote: . . . thinking of drilling throught bracket and frame so to bolt it and be able to remove......thoughts? . . . .

steell wrote: . . . If I was going to drill the frame, I'd make a boss (a thick walled tube that extends through the frame) and braze it to both sides. That would provide strength and support to the frame and keep the hole from cracking. Like the right front engine mount plate bolt holes.

Brazing a mount to the frame would be better . . .

Tig welding would probably be better than brazing, but the equipment is more expensive and it requires more skill.

Would not drill through the frame without welding in a support boss.

Here's a link to the thread that contains steell's above post, plus other advice in this regard.
www.kzrider.com/forum/5-chassis/234686-o...ame-down-tube#234686

Good Fortune!

Patton.....the holes would be on the tube under the seat ( 3/8"). Would not think thier is any stress from the engine.
Are u saying it would crack from vibration over time?

Also how do I measure for chain drive lenght? front to back sprocket

spdygon wrote: Patton.....the holes would be on the tube under the seat ( 3/8"). Would not think thier is any stress from the engine.
Are u saying it would crack from vibration over time?

Also how do I measure for chain drive lenght? front to back sprocket

Can't you bend it all the way around the frame nice and tight and then bolt the strap back to itself?

spdygon wrote: Patton.....the holes would be on the tube under the seat ( 3/8"). Would not think thier is any stress from the engine.
Are u saying it would crack from vibration over time?

Also how do I measure for chain drive lenght? front to back sprocket

it is the stress from the rear shocks working feeding through the subframe into the backbone tubes that would cause you problems.not vibes from the engine.

drill a 5/8's hole and use some 1/8 wall tube cut to length and weld it in.
now it is stronger than it was to begin with.

leon

p.s. a piece of string wrapped around your sprockets can get you close on length then a little math will tell you how many links you need.