Motorcycle recommission project - Suzuki GS750

[Guinessisgoodforyou]

Don't know how much rechroming is but it appears you can get new replacements for around £170.

 

[novocaine]

But you still need the technical data to make use of the figures!
Here's everybody waving their tools about
()
but where are the numbers?
It's what you can do with it that counts

what ^ he said but also, the will wear oval, so measure n/s the e/w, if there is a huge difference there's an issue, if there isn't, there isn't.

 

[Guinessisgoodforyou]

https://legendmotorcycles.com/product/fork-tubes-suzuki-gs750/

 

[LondonClassic]

You could compare side to side waggle with fore-aft waggle to judge wear...

But once you've got the data, where do you check what the numbers mean?

Original workshop manual available online i would assume, owners forum? i mean the were thousands of those bikes out there once.

Presumably the chromed sliders are a lot harder than the aluminium lower legs, so I suspect the factory option would be that you fit new lowers if there's any wear at all.

Theres no mention of bore spec for fork lowers in either the Suzuki service manual or the Clymer manual (not the same as the workshop manual the dealers get, I know). I think you're right, the original option would have been to get new lowers. Plenty of info on cylinder bore and master cylinder bore service limits. This is the section in the service manual:

No mention of the lowers, anywhere.

I'm not going to lose too much sleep on this. This rabbit hole leads to fitting newer compatible forks such as bandit 600 where you can still buy new lowers...but that means bandit wheels, brakes etc. I don't want to go there, fitting a more modern front end...that means matching it at the rear which is a much larger headache with chainline and swingarm clearance. And bandits are largely ragged and poorly maintained from what I see for sale.

Right now to my untrained hands there doesn't feel like the tube is slapping around in the lowers and rotating the tube doesn't offer more or less resistance.

 

[LondonClassic]

https://legendmotorcycles.com/product/fork-tubes-suzuki-gs750/

I did see these. I've bought small items from this guy and he offers a great service...I don't know, I am suspicious of the quality given the price.