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 Fork pinch bolts.

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beetle
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Tanabuso
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PostSubject: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Fri Jan 29, 2021 10:04 am

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?
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Oz1200Guzzi
Don Abbondio
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Fri Jan 29, 2021 12:45 pm

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.

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beetle
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Fri Jan 29, 2021 2:31 pm


I've done it. Do it.


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Pete Roper
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Fri Jan 29, 2021 2:39 pm

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!

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beetle
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Fri Jan 29, 2021 3:52 pm


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).



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Papa Lazarou
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Sat Jan 30, 2021 2:00 am

stainless on mine Smile

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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Sat Jan 30, 2021 2:10 pm

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 Fork pinch bolts. 20210110
Fork pinch bolts. 20210110
ones. They helped me source same for brake carriers etc.
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Sat Jan 30, 2021 2:11 pm

Sorry got carried away posted pic twice
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Sat Jan 30, 2021 2:35 pm

Its settled. I willbgrab 4 SS bolts tomorrow.
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JohnA
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Mon Feb 01, 2021 3:50 am

Thanks for the measurements and torque info. Ordered and received new ss bolts from Amazon in a day for $7.
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sideshowbob
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Mon Feb 01, 2021 7:24 am

Or you could do this.
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Thu Feb 04, 2021 10:03 am

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.


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Oz1200Guzzi
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Thu Feb 04, 2021 12:33 pm

Sunbeam wrote:
Sorry got carried away posted pic twice

Just making the point - all good.
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PostSubject: Re: Fork pinch bolts.   Fork pinch bolts. Icon_minitime1Fri Feb 05, 2021 9:13 am

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.😎
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