Fork pinch bolts.

Carlotto Posts : 48 Join date : 2019-03-17 Age : 49

Hi guys. I'd like to pick the collective brains for a minute.
While sitting in the garage staring at my GRiSO, I noticed the 4 pinch bolts clamping the front axle were regular old 10mm bolts. And they're looking like crap. All the other bolts on the forks are allen head stainless steel bolts.
Already figured out they are M8×1.25×40. The they are only threaded for the first 20mm of the bolt then the rest is just standard shank.

Would it be wrong to use bolts (allen head/stainless) that are threaded over the entire 40mm length instead of the shanked ones?
What sayeth the flock?

Don Abbondio Posts : 4978 Join date : 2014-03-13 Age : 66

Do it, the originals are made from mouldy cheese, so not a lot to live up to.

The difference between set screws and bolts is only the thread - unless it needs to be super tight, should be OK. I have done many bolts on mine with SS.

GRiSO Capo Posts : 8345 Join date : 2013-09-30

I've done it. Do it.

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GRiSO Capo Posts : 7919 Join date : 2013-05-29 Age : 64

And remember they don't have to be cranked up "Til you fart', just nipping them up is all they need. Standard 8mm steel into alloy is 22 ft/lbs but in a situation like this you really don't have to go that tight. Chances of cracking the casting on a GRiSO are low. Early Stelvios were a nightmare!

GRiSO Capo Posts : 8345 Join date : 2013-09-30

22 ft/lbs is 29Nm. The SM says 25Nm, but since I had to run a tap through one of mine, I now use 20Nm (15 ft/lbs).

GRiSO Capo Posts : 709 Join date : 2014-10-07 Age : 66

stainless on mine Smile

GRiSO Capo Posts : 62 Join date : 2018-02-27

Probolt stainless pinch bolts.I have used these on various bikes over the years and never had any issues. If not listed on site then a call stating size and use gets you the correct [You must be registered and logged in to see this image.]
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ones. They helped me source same for brake carriers etc.

GRiSO Capo Posts : 62 Join date : 2018-02-27

Sorry got carried away posted pic twice

Carlotto Posts : 48 Join date : 2019-03-17 Age : 49

Its settled. I willbgrab 4 SS bolts tomorrow.

GRiSO Capo Posts : 411 Join date : 2015-01-13 Age : 64

Thanks for the measurements and torque info. Ordered and received new ss bolts from Amazon in a day for $7.

GRiSO Capo Posts : 838 Join date : 2017-08-06 Age : 66

Or you could do this.
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Carlotto Posts : 48 Join date : 2019-03-17 Age : 49

Quick update.

My local Ace Hardware had the bolts and washers to go with them in stock. No challenge or feat of engineering, but I feel it looks better. Its the small victories.

Don Abbondio Posts : 4978 Join date : 2014-03-13 Age : 66

Sunbeam wrote:: Sorry got carried away posted pic twice

Just making the point - all good.

Carlotto Posts : 48 Join date : 2019-03-17 Age : 49

Funny side note.....
Standing in garage tinkering on my cool moto-

s and just noticed my VTX and my TT600. Came with allen bolts. Now they all match.