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-   -   Captive Wheel Spacers? (http://forums.sv650.org/showthread.php?t=184549)

squirrel_hunter 15-09-12 09:52 PM
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?

Bibio 15-09-12 10:06 PM
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.

andrewsmith 15-09-12 10:12 PM
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

squirrel_hunter 15-09-12 10:18 PM
Re: Captive Wheel Spacers
 
Quote:
Originally Posted by Bibio (Post 2772212)
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?

AndyBrad 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

barwel1992 15-09-12 10:57 PM
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

Bibio 15-09-12 11:39 PM
Re: Captive Wheel Spacers
 
Quote:
Originally Posted by squirrel_hunter (Post 2772220)
would that not mean different bearing
yes

Mr Speirs 16-09-12 07:05 AM
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.

squirrel_hunter 16-09-12 09:52 AM
Re: Captive Wheel Spacers
 
Quote:
Originally Posted by Mr Speirs (Post 2772247)
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
Re: Captive Wheel Spacers
 
Quote:
Originally Posted by squirrel_hunter (Post 2772278)
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.


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