Topic: 1978 CB750K Rear wheel offset

[Marks78]

Just read "Engine is off center to the frame" thread and had to ask.
Hondaman said the post 1975 models have a rear wheel offset to the left but didn't say how much of an offset.  I am in the process of lacing the rear wheel on my CB750K8 and would love to know how much I need to move the wheel to the left. (yes it would have been smart of me to measure before I took it apart, sadly I didn't ) Will send Hondaman a PM if no response here but thought I would try this first so others could share in the learning. 

[HondaMan]

Just read "Engine is off center to the frame" thread and had to ask.
Hondaman said the post 1975 models have a rear wheel offset to the left but didn't say how much of an offset.  I am in the process of lacing the rear wheel on my CB750K8 and would love to know how much I need to move the wheel to the left. (yes it would have been smart of me to measure before I took it apart, sadly I didn't ) Will send Hondaman a PM if no response here but thought I would try this first so others could share in the learning. 

I hope I can describe this adequately:
When viewed from the rear of the bike:
The offset for the rear wheel is such that the center of the spokes is 44mm to the left of the (machined) face of the brake's drum.

So...if you have the wheel in the wheelstand, face the brake drum to your right, and drop a string (or long straightedge) across the faces of the drum's machined edge and set the center the rim to your left by 44mm. This is why you sometimes see those weird-looking, spindly offset tools hanging from the axle of the alignment jigs...

[Marks78]

Thanks HondaMan!! That is exactly what I needed! Great explanation! I may yet get this bike on the road this year!
So, I snuck up to the shop for a minute and if I measured accurately it looks like the hub is too far to the left by about 4-5mm. So it's time to loosen, shift the hub and re-tighten the spokes! Thanks again for the response! You have just saved me from a lot of headaches down the road! Hopefully I will have it done by the time I get my swingarm back and can get it all put together and move on to the next phase - making sure the engine is ready to start and see how it runs.

[HondaMan]

Thanks HondaMan!! That is exactly what I needed! Great explanation! I may yet get this bike on the road this year!
So, I snuck up to the shop for a minute and if I measured accurately it looks like the hub is too far to the left by about 4-5mm. So it's time to loosen, shift the hub and re-tighten the spokes! Thanks again for the response! You have just saved me from a lot of headaches down the road! Hopefully I will have it done by the time I get my swingarm back and can get it all put together and move on to the next phase - making sure the engine is ready to start and see how it runs.

Very cool! Ride safe. That one would have had a chronic sensation to it that was similar to the original Kawi Blue Streak: those bikes actually had the rear wheel set 3/4" (19mm !) off to one side (the left, I think?). They were rockets in the streetlight races famous in the '60s and '70s (I lost to more than one!), but if there was any non-straight road in front of them, they were easy to outdistance on a 750 - in 3rd gear.