I’m beginning to see why every one of these CBR font end conversions they keep the CBR front wheel. What a forking shirtballs of a PITA this is turning into. Like a middle school dance. One step forward, one back. Repeat.
VFR front rim came in today. Looking a little rougher than the photos but $25 is $25, then the real problem reared its head.
This thing is almost as chunky as the bike was to begin with.
Zero offset rotors.
As opposed to the 929RR rotors
With a center to center width on the calipers of 142mm. Welp, that math ain’t gonna math.
After spending an hour running down these options:
1. Convert the 78 silver comstars to dual disc, take that set from the Pirate Ship and swap them on Jenny, fab the original rotor adapters to the 5 bolt comstars, and pray I don’t run into rear wheel clearance issues with the 18” instead of the planned 16” - as that would involve complete redesign of the rear end, electronics box, seat… ugh.
2. Mill about 15mm off the standouts (12 total) on the VFR rims, fab the 6x6 adapters for the 929 rotors. Risky.
3. Original shaving plan on the original reverse Comstars.
Needless to say, if I still drank, there would have been some drinking.
So, I started thinking about custom rotors. That’s the obvious solution. Until I priced that out. Let’s call that one a goal state ideal for another timeline.
Figuring that there’s got to be a way to make this work, I set out to find a solution. FYI. If you’re ever in this particular realm of the internet, tarazon.com has rotor specs on just about every single motorcycle rotor ever made. Diameter, ID, bolt hole pattern, size, offset.
Bam. Found it. 2006 CBF600 rotors are zero offset 5MM rotors 296 diameter, I’ve got a set of CBR600 calipers that are slightly shallower than the 929 as they were made for 296’s and have the same bolt pattern and size as the 929 calipers. So a simple 5MM spacer behind the rotor gives me the offset needed to line them up exactly with zero machining of the rim.
So, back to having a conversation with my buddy Mango Jelly about polar arrays and here we have it
