Captive Wheel Spacers? - SV650.org

squirrel_hunter · 15-09-12, 09:52 PM

Can someone please explain to me how they work?

I have spent quite sometime, tonight for instance, arguing with bikes, wheels, and their spacers. Its an argument that I always win, it just takes too long. So it got me thinking those racers can change wheels quite quickly and they have yet to resort to evolving an additional set of arms (don't get me wrong an additional set of arms would be very useful I just don't fancy buying all new t-shirts just yet). I understand that they use captive wheel spacers to help them and I have seen them available for many bikes. But I was wondering how they work, how they are fitted, and why they are not standard?

Bibio · 15-09-12, 10:06 PM

they work just like the sprocket spacer in that the spacer is 'captive' in the race so less likely to fall out when putting the wheel back on.

andrewsmith · 15-09-12, 10:12 PM

It boils down to cost, they aren't cheap.
I'm really considering swapping out on the rear for ease over the winter

squirrel_hunter · 15-09-12, 10:18 PM

Quote:

Originally Posted by Bibio

they work just like the sprocket spacer in that the spacer is 'captive' in the race so less likely to fall out when putting the wheel back on.

But what captivates them?

You say captive in the race. That makes me think of the bearing races, so an interference fit to them, would that not mean different bearings or spindle?

15-09-12, 10:35 PM

They sit behind the dust seal for the bearing.

Hasn't yc got a lathe? He might knock you some up? ?

Sent from my GT-I9300 using Tapatalk 2

15-09-12, 10:57 PM

i thought the captive ones were just top hat spacers that sit inside the bearing rather than sitting against its face

although you could make some like above that use the standard bearings

i could possibly knock some up as well, would need measurements though as i don't have a sv any more and you'd need new bearings for top hat type

Bibio · 15-09-12, 11:39 PM

Quote:

Originally Posted by squirrel_hunter

would that not mean different bearing

yes

Mr Speirs · 16-09-12, 07:05 AM

Lots of people on trackdayriders use them and swear by them.
They are the same as standard except they are machined so there is a slight lip on the side nearest the bearing. This lip sits behind the dust seal on the bearing and holds it in place.

Hope this helps.

squirrel_hunter · 16-09-12, 09:52 AM

Quote:

Originally Posted by Mr Speirs

Lots of people on trackdayriders use them and swear by them.
They are the same as standard except they are machined so there is a slight lip on the side nearest the bearing. This lip sits behind the dust seal on the bearing and holds it in place.

Hope this helps.

How is that possible with sealed bearing units like I see in my wheels?

mikerj · 16-09-12, 10:57 AM

Quote:

Originally Posted by squirrel_hunter

How is that possible with sealed bearing units like I see in my wheels?

It doesn't fit behind the seal which is part of the bearing, they fit behind the outer "dust" seals, which AFAIK the majority of bikes have, even if they use sealed bearings within the wheel and sprocket carrier etc.

15-09-12, 09:52 PM	#1
squirrel_hunter Member Mega Poster Join Date: Apr 2005 Location: Sunny Swindon Posts: 3,579	Captive Wheel Spacers? Can someone please explain to me how they work? I have spent quite sometime, tonight for instance, arguing with bikes, wheels, and their spacers. Its an argument that I always win, it just takes too long. So it got me thinking those racers can change wheels quite quickly and they have yet to resort to evolving an additional set of arms (don't get me wrong an additional set of arms would be very useful I just don't fancy buying all new t-shirts just yet). I understand that they use captive wheel spacers to help them and I have seen them available for many bikes. But I was wondering how they work, how they are fitted, and why they are not standard? __________________ "A little enthusiastic?" May I add here, GG is awesome and I think I am in love with Stretchie...he rocks my world! SH2 \| 2MA \| GROM \| YSR

15-09-12, 10:06 PM	#2
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,561	Re: Captive Wheel Spacers they work just like the sprocket spacer in that the spacer is 'captive' in the race so less likely to fall out when putting the wheel back on.

15-09-12, 10:12 PM	#3
andrewsmith Member Mega Poster Join Date: Apr 2010 Location: Newcastle upon Tyne, Just south of salad dodging country Posts: 7,750	Re: Captive Wheel Spacers It boils down to cost, they aren't cheap. I'm really considering swapping out on the rear for ease over the winter __________________ RIP Reeder 20/07/1988 - 21/03/2012. Always missed squire!!! Every year we meet old friends, gain some new ones, lose old ones and you always remember them all. “Live as if you were to die tomorrow. Learn as if you were to live forever.” Mahatma Gandhi

15-09-12, 10:57 PM	#6
barwel1992 Guest Posts: n/a	Re: Captive Wheel Spacers i thought the captive ones were just top hat spacers that sit inside the bearing rather than sitting against its face although you could make some like above that use the standard bearings i could possibly knock some up as well, would need measurements though as i don't have a sv any more and you'd need new bearings for top hat type

16-09-12, 07:05 AM	#8
Mr Speirs Member Mega Poster Join Date: Jul 2008 Location: Northampton Posts: 2,218	Re: Captive Wheel Spacers Lots of people on trackdayriders use them and swear by them. They are the same as standard except they are machined so there is a slight lip on the side nearest the bearing. This lip sits behind the dust seal on the bearing and holds it in place. Hope this helps. __________________ Smokey Black Burnty 02 - Racetech Smoulderlators + .90kg BBQ Springs, zx10r shockingly toasted, Conti Road Attacks heat up very nicely, R&G Crash Bungs but what f**king use are they, No Colour Matched Hugger, Flame Extenda, Beowulf Titainium Oval Flame Thrower.

15-09-12, 10:35 PM	#5
AndyBrad Guest Posts: n/a	They sit behind the dust seal for the bearing. Hasn't yc got a lathe? He might knock you some up? ? Sent from my GT-I9300 using Tapatalk 2

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