Topic: K7 750 - front and rear wheel offset

[Erny]

Preparing for trueing wheels, I got question from person who will do the job asking what is offset of stock wheels (front 19 1.85", rear 17 2.5")?
Despite trying to find, I was not successful.

Can someone advice?

[69cb750]

Centered on the hubs, you hired a real expert !

[bryanj]

Is that ex as in used to be and spert as in drip under pressure?

[scottly]

Centered on the hubs, you hired a real expert !

And just how do you measure the center of the front hub on a K7?
Erny, measured from the machined surfaces where the brake rotor seats on the left side and the same surface on the right side where the speedometer cover plate seats under the rotor bolts, the off-set is 3mm, with the right side surface 3mm to the inside.

[Erny]

Thanks Scottly. What's about rear?

[pjlogue]

The way I centered my hub during lace-up was to measure, with straight edge across the rim's outer edge (no tire mounted), the distance from the edge of the straight to the base of the outside edge of the flange that the spokes go through on the hub.  each side should be the same distance.

The guy you are having lace/true up your rims understands what he is doing to ask that question about offset.  It is VERY rare these days to find a shop that knows how to lace and true a wheel properly.  I think the reason most shops charge an arm and a leg is because they don't know what they are doing and they do it by trial and error which takes a very long time.  Hence the high cost.

-P.

[Erny]

Thanks for info

[BenelliSEI]

Pjl’s comments are spot on! Our cb750s RARELY have the front wheel centred on the front fork legs. I always check the original, on the bike, before starting. Measure in from both legs to the rim edge. Figure out which way you want to move the rim, and by how much. Once the wheel (and tire) are off the bike, remove the disc, lay the straight edge across that side of the rim. Add or subtract the change you want to the rim to disc face measurement. When build the new rim, set to that measurement.

Nothing more satisfying than doing it right!

[scottly]

Thanks Scottly. What's about rear?

Sorry, I can't help with the rear. I did spend hours verifying the front 3mm offset though.