Front Wheel Spacing

  • Thread starter Thread starter Grant
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Grant

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Just went to slap on the new wire wheels I bought this week to a 1200.
Went to fit the front, using the 1200's wheel spacers, but the spacer is way too narrow.
Seems like the (3C) front wire wheel hub is narrower than the 1200's alloy wheel.
Before I make up another spacer, is it only the left side spacing that is different, i.e. does the speedo drive assembly centre up ok on the other side?

Haven't even got round to the rear wheel yet but it is a CAD-designed hub based on the SFC 750 so maybe it needs totally different spacers too.
Anyone know the score here?
 
Hi Grant,

Indeed you'll need a larger spacer to fit the wire wheel up front. I have 17.5mm width in the back of my head from my conversion using the SF2 hub. Right side shouldn't need any spacer or shimming.
Do the brake discs line up with the brake calipers?

Dunno about the back wheel but you should not need that hyper fugly upside-dpwn caliper mount if it has the OEM 750 SFC dimensions.

HTH
Gerald
 
Thanks Gerald.
I haven't got round to trying to fit the calipers yet.
To be honest all I need right now is a rolling chassis as I want to move the bike. Currently it is up on stands.
The original wheels are away being painted so I can't even put them back on.

I have a bunch of spacers so I will go have a rummage.

Visually the rear disc spacing looks weird, standing well proud of the hub so I guess I will have to be creative there too.
At this point in time I was planning to refit the standard caliper and carrier at the rear, but it's a bit of a blank canvas at the moment.
 
Doesn't seem like too difficult a problem. I guess you've already checked that the axial distance between the two disks is the same for both front wheels. I'd suggest you set up the new wheel and speedo drive in the forks (without spacers) so the clearance between fork legs and disks is the same both sides. Then measure the gaps where the spacers need to go. You may have to get new spacers made up if you don't have any that will do the job.

Cheers,
Cam
 
I just converted my 750 from wires to aloys, and had to use all new spacers.

Interestingly, on the front, the original tacho drive (from the wire wheel) went straight on and the disc lined up perfectly, but the spacer on the left side was too narrow and the disc would not go into the caliper properly until I put a spacer from the aloy setup instead.
Only a couple of mm wider, but it made all the difference.

On the back, it was a complete change over of spacers, but that may have more to do with the wider swing arm than with the wheel hub.

Dale
 
Its been a while since I have swapped the callipers behind the fork but the sticking point comes from the step in the axial,it complicates mater's a bit.
 
Thanks guys, will sort it out today as I need to move the bike by close of play today.

Vince, not sure what your issue was. I have reversed the calipers several times, just slide the axle in from the other side.
 
Grant it was a summitry thing,the shoulder step in the axial required an extra washer,about 2mm to get the callipers to line up with the disc's and for the disc to clear the fork leg.I have heard it is suppose to be a straight end for end swap but not in my case.
 
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