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wrote:

I was out yesterday.  At 5000 rpm I was doing 114 kph, measured with a GPS.  But I gave bad numbers for my sprockets.  I currently am using 16 & 35.  (I had forgotten when I rebuilt the bike I used a Z1 sprocket to save a bit of money.)  The bike has 630 chain.

That's 70.83632 MPH. I have a 15/35 and am doing that. Are you using the tranny you were talking about a while ago?
Steve
 

This should work out well. 
Steve

Now for some paint. 
Steve

I'm in vacation till Monday,I'll get pics,what ever you think it's worth is good with me. Maybe keep a look out for a nice spoke rear wheel for my 77a

Had some great weather today. Rode to my grandson Baseball game. Had lunch with my son, grandson and a few other baseball friends. So here’s what I have. 

16” x 3.00 mag Enkie wheel
130/90 x 16 Pirelli Phantom tire
15/32 x 630 chain
78” circumference 
25” diameter 
4,500 RPM at 70 mph

Just to chime in, I went out today for a bit on my '77.  At 60 MPH in 5th gear the tach is showing 4100 RPM.  At 70 MPH in 5th gear it is showing 4600 RPM.  I'm running pretty close to stock tires with 15/34 sprockets and 630 chain with a clip link master no less, but wired.  I like staying below 5 grand for cruising speeds.

Rick H.

wrote:

Just to chime in, I went out today for a bit on my '77.  At 60 MPH in 5th gear the tach is showing 4100 RPM.  At 70 MPH in 5th gear it is showing 4600 RPM.  I'm running pretty close to stock tires with 15/34 sprockets and 630 chain with a clip link master no less, but wired.  I like staying below 5 grand for cruising speeds.

Rick H.

Rick you have an 18” spoke rear on your “A” model correct?

Yes Matt, 18" rear.

Rick H.

Just read this thread, i am running a 16 wheel for one year, first with 15/35 but in my opinion to high revs on the highway. Now running 33 sprocket and perhaps change it to 32 teeth.Machine still accelerates fast (1015cc with vm 29 smoothbores)

This was on a 75 Z1 that was restored,18 inch ,not sure what it originally came off,I also have the matching front with twin disc.

It looks like an OE Kawasaki wheel.  Does/did it have bead locks?

Could it be from a kz650-C?  I think the 650 used a smaller drum than the 900/1000.  What's the diameter of the drum?

The 2.15" width is the same as my '78 Z1R, so it should fit the stock size 900/1000 tire.

wrote:

It looks like an OE Kawasaki wheel.  Does/did it have bead locks?

Could it be from a kz650-C?  I think the 650 used a smaller drum than the 900/1000.  What's the diameter of the drum?

The 2.15" width is the same as my '78 Z1R, so it should fit the stock size 900/1000 tire.

 

The KZ650-C models used disk brakes front and rear.  Ed