1mm forks size differance can owt be done? - SV650.org

15-06-11, 02:00 PM

sv 1000 fork size 46mm
forks im looking at 45mm
now im no enginqueer but is this in the relms of being able to be done by widing the pinch slit on the yoke and tighting it more
begin the abuse

timwilky · 15-06-11, 02:07 PM

Dave, think about it, You are starting with a rattle fit and as you stress the yokes to clamp it you will only be contacting the forks at two points and then bending the yoke round the rest of the fork. Asking for trouble, I would not think them stable

15-06-11, 02:07 PM

Hi DAVE, the correct method is to use some "shim material" and not put excess strain on the Yokes?? perhaps YC has some shim stock if not I will have a look through what I have if it helps.

JOHN

timwilky · 15-06-11, 02:10 PM

Shimming would help. Personal opinion is it is a compromise. I would always be thinking that it is an extra interface that could let go

sv4me · 15-06-11, 02:11 PM

Quote:

Originally Posted by davepreston

begin the abuse

You're a beanpole with a face only a mother could love........oh you meant about the forks

yorkie_chris · 15-06-11, 02:52 PM

why what are you planning and why?

No don't do it except with shim. Cast ally is not great for flexing.

jambo · 15-06-11, 03:15 PM

45 - 46mm diameter is only 1mm difference so sounds possible.

However, over the circumference of the fork / yoke contact patch that works out to be over 3mm of difference (Pi*46 - Pi*45)

That's a lot of stretch.

I'd be after something that fits, or a suitable way of making up the difference

Jambo

15-06-11, 03:17 PM

ok idea shelved
dave im going to use you for dwarf bowling at AR

Sid Squid · 15-06-11, 04:41 PM

Shim will be fine as long as it's accurately sized.

15-06-11, 02:00 PM	#1
davepreston Guest Posts: n/a	1mm forks size differance can owt be done? sv 1000 fork size 46mm forks im looking at 45mm now im no enginqueer but is this in the relms of being able to be done by widing the pinch slit on the yoke and tighting it more begin the abuse

15-06-11, 02:07 PM	#2
timwilky Member Mega Poster Join Date: Mar 2004 Location: Not in Yorkshire. (Thank God) Posts: 4,116	Re: 1mm forks size differance can owt be done Dave, think about it, You are starting with a rattle fit and as you stress the yokes to clamp it you will only be contacting the forks at two points and then bending the yoke round the rest of the fork. Asking for trouble, I would not think them stable __________________ Not Grumpy, opinionated.

15-06-11, 02:07 PM	#3
Icanopit Guest Posts: n/a	Re: 1mm forks size differance can owt be done Hi DAVE, the correct method is to use some "shim material" and not put excess strain on the Yokes?? perhaps YC has some shim stock if not I will have a look through what I have if it helps. JOHN

15-06-11, 02:10 PM	#4
timwilky Member Mega Poster Join Date: Mar 2004 Location: Not in Yorkshire. (Thank God) Posts: 4,116	Re: 1mm forks size differance can owt be done Shimming would help. Personal opinion is it is a compromise. I would always be thinking that it is an extra interface that could let go __________________ Not Grumpy, opinionated.

15-06-11, 02:52 PM	#6
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: 1mm forks size differance can owt be done? why what are you planning and why? No don't do it except with shim. Cast ally is not great for flexing. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

15-06-11, 03:15 PM	#7
jambo Member Mega Poster Join Date: Aug 2003 Location: Croydonia Posts: 5,376	Re: 1mm forks size differance can owt be done? 45 - 46mm diameter is only 1mm difference so sounds possible. However, over the circumference of the fork / yoke contact patch that works out to be over 3mm of difference (Pi46 - Pi45) That's a lot of stretch. I'd be after something that fits, or a suitable way of making up the difference Jambo __________________ Modern motorcycles are bloody brilliant, enjoy it while we can

15-06-11, 03:17 PM	#8
davepreston Guest Posts: n/a	Re: 1mm forks size differance can owt be done? ok idea shelved dave im going to use you for dwarf bowling at AR

15-06-11, 04:41 PM	#9
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: 1mm forks size differance can owt be done? Shim will be fine as long as it's accurately sized. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

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