S4RS Wheels to S2R1000 (New Idea)

NAKID · May 16, 2009, 02:22:21 PM

What am I missing? I was under the impression this was a straight bolt on as long as you used the spacers and rotors from the S4RS? There is something wrong with the offset of the rotors. You can't put the calipers on without metal on metal contact between the inside of the caliper and rotor. The stock offset on the S2R1000 rotors look like they would work, but they are 6 bolt not 5 like the S4RS wheel.

Anyone have an idea?

Stu?

Please?

Chris

Spidey · May 16, 2009, 02:38:52 PM

IIRC, Speeddog and/or Stu said it was because of the Ohlins forks on the S4rs. One of them mentioned it to me recently. Mebbe it was because the fork bottoms are wider? I don't remember exactly. That's all I know. G'luck.

NAKID · May 16, 2009, 02:42:55 PM

Hmmmmm, anyone got a set of Ohlins and monoblocks they wanna sell?

NAKID · May 16, 2009, 09:08:24 PM

Well, looking at it again, looks like some material would need to be taken off of the fork bottom mounts or the caliper itself...

silentbob · May 17, 2009, 11:35:27 AM

The rotors have a different offset between the radial calipers and the axial calipers you have on your bike. You can't use your rotors because the bolt pattern is different. You need to contact BrakeTech and get yourself some cast iron rotors with a 5 hole pattern and offset for axial calipers.

This is why I didn't trade my S4R for an S4Rs. I couldn't swap the BST wheels and Brake Tech rotors.

NAKID · May 17, 2009, 02:26:26 PM

I was talking to Mark about it yesterday. I'm contemplating turning the rotors around the other way and shimming them back out. It could work...

silentbob · May 17, 2009, 02:39:20 PM

I don't like using the "make it fit" approach when it comes to brakes. But, that's just me.

NAKID · May 17, 2009, 02:44:36 PM

I sent an email to brake tech. But I imagine it will cost me as much or more for the rotors as it did for the wheels and tires...

silentbob · May 17, 2009, 04:56:41 PM

Quote from: NAKID on May 17, 2009, 02:44:36 PM
I sent an email to brake tech. But I imagine it will cost me as much or more for the rotors as it did for the wheels and tires...

Yes it will. But they are nice.

ducpainter · May 17, 2009, 05:01:47 PM

Quote from: silentbob on May 17, 2009, 02:39:20 PM
I don't like using the "make it fit" approach when it comes to brakes. But, that's just me.

What could go wrong?

NAKID · May 17, 2009, 06:35:37 PM

Quote from: ducpainter on May 17, 2009, 05:01:47 PM
What could go wrong?

Plenty could. But, if done right it could work. Obviously it will be double, triple and quadruple checked before I attempt anything "at speed"...

silentbob · May 17, 2009, 07:30:54 PM

Quote from: ducpainter on May 17, 2009, 05:01:47 PM
What could go wrong?

I just don't like extending the bolts away from the hub, adding to the flex and possible failure many miles down the road after you are confident that everything is now working fine.

Of course you could always sell the wheels and buy BSTs instead. That way you will save money on the rotors.

ducpainter · May 17, 2009, 07:50:32 PM

Quote from: silentbob on May 17, 2009, 07:30:54 PM
I just don't like extending the bolts away from the hub, adding to the flex and possible failure many miles down the road after you are confident that everything is now working fine.

Of course you could always sell the wheels and buy BSTs instead. That way you will save money on the rotors.

An old flattracker buddy told me

"Brakes just slow you down"

MotoCreations · May 17, 2009, 09:32:13 PM

Other solution is to machine new carriers for the disks.

Thus you'd:

- remove disks from carriers by drilling/removing buttons
- install disks on new carriers. (use "full floating" buttons too that way your disks ringle/ringle/dingle as you push your bike around!)
- park: design your own cool cutout in the new carrier itself!

Only problem is that short of having your own lathe / mill -- it isn't cost effective unless someone does a small batch of them via CNC. (and then sells the remainder via Jeff / MonsterParts or themselves) Any machinist needing a small project?

NAKID · May 18, 2009, 02:16:24 PM

Quote from: MotoCreations on May 17, 2009, 09:32:13 PM
Other solution is to machine new carriers for the disks.

Thus you'd:

- remove disks from carriers by drilling/removing buttons
- install disks on new carriers. (use "full floating" buttons too that way your disks ringle/ringle/dingle as you push your bike around!)
- park: design your own cool cutout in the new carrier itself!

Only problem is that short of having your own lathe / mill -- it isn't cost effective unless someone does a small batch of them via CNC. (and then sells the remainder via Jeff / MonsterParts or themselves) Any machinist needing a small project?

Are you volunteering?

Got a reply back from BrakeTech. Short answer, I'm SOL.

Long answer, they have 5 bolt rotors with the proper offset, but they are 310mm not 320mm rotors...

News:

S4RS Wheels to S2R1000 (New Idea)

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