nice man love to hear technical specs on ****.

Im going to look up bst's specs now as im interested the quality machine co. looks solid might have to send my rotor to them. Also there alignment tools looks very very interesting. Been looking for something like that!

 

2007-2012
BST front rim - 5.8 pounds with ceramic bearings
BST rear rim 5.5" - 11.45 pounds with sprocket carrier and ceramic bearings

stolen from sport bike track gear

 

BST's are another pound lighter on the front? Unfortunately we can't race on carbon fiber rims in the US. I wonder why they are so much heavier in the rear.

I had my front and rear rotors machined by the machine co on my cbr250. They did a great job.

 

The bst is fully dressed in that weight. Not bare.

 

Ah. OK. The rear Marchesini fully dressed (everything but rear rotor) weighs 12.7. Carbon fiber wins again. Wish I could race on them.

 

They are fabulous. Especially when paired with cmcs. My front wheel with rotors, bearings and spacers is 8.3 lbs

 

I'll post my total weights once I get my rotors. Less than 1.5 pounds added weight for rotors? Probably not.

 

They are ceramic. Both weigh less than one stocker.

The weights were measured on a scale used for measuring automotive paint. It's accurate.

 

IIRC there was a thread with a bunch of wheel weights listed.....Marchesini, Dynamag BST and others.....

And a thread with some weird CF euro wheels with gigantic air containing spokes.....

 

Those are huge rotors - what's the diameter? Again, can't use ceramic in cmra racing, but very cool.

 

They're just 320s

The fisheye makes them look bigger than they are

 

Astounding rolling stock wibbly !

 

The rotors came in. So the fully loaded weight is:

Marchesini's (with Brembo Tdrive 320 rotors on the front, machined stock rotor on the rear):

Front - 13.4 lbs (7% weight savings)
Rear -13.9 lbs (21% weight savings)

Stock (all stock rotor cush, spacers - except 520 sprocket and wave rotors)

Front - 14.3
Rear - 17.6

Not as much weight loss as I had hoped on the front, but the 320 Brembo rotors are .6 lbs heavier than stock (true stock, not the waves that were mounted on the tire) each, so about 1.2 lbs heavier total. Hopefully the better braking is worth it.

 

Here are some pics, stock first.

 

How did you like those Yana Shiki wave rotors?

It is extraordinarily difficult to feel the benefits of different calipers or rotors in sportbike braking; you have to be hot lapping on the track pretty hard to experience a tangible, human perceptible difference.

 

How many rotor and caliper co figurations have you used? I find this post very strange

 

OP did you consider the M7RS? I believe it might be lighter than the M10RS.

 

Ugh, too many - sort of lost money on so many transactions.

Went back to stockers, but then got a great deal on some Braking SK2 directional rotors, so we'll see how they go.

The stock rotors are very good. When I am in the groove I am at the back of the pack in A group, and I can't overwhelm the brakes. I traded up to the monoblock Tokicos when I got a good deal on them, but I felt no difference between them and the split Tokicos. The Brembo RCS19 and the Vesrah pads, those I felt an appreciable difference, and at any speed - I think the rotors and calipers come into play in heat management and fade resistance, moreso than they offer anything much different in outright capability.

 

I like the stock rotors better than the Yana Shiki - the Yana's feel like a brick.

I didn't upgrade for heat dispersal, rather I'm hoping for a more linear feel / feedback. I was also hoping for lighter (faster acceleration /deceleration and quicker turn in), but...

I looked at the M7RS, but the Marchesini web site doesn't list them as any lighter (8.3kg for the M7RS's and 7.6kg for the M10RS's - the M7R's are listed at 7.7kg but I couldn't find them for the CBR600), and then I got a sweet deal on used M10's. The weight savings on the wheels is as good as I had hoped. It's the front rotors that are heavier, not lighter.

 

I have a set of marchesini 10-spoke wheels that have the same spoke design as yours, kfox. I bought them used and I was told they are aluminum, however. I've noticed marchesini has different spoke designs for their 10-spoke wheels. I never figured out what each design means. I figured there are two generations of 10-spoke wheels, but all the mag wheels I have have the same spoke design as yours/mine do.

 

Their web site (http://www.marchesiniwheels.com/en/wheels/performance/Pages/02performance.aspx) is pretty helpful. They make both mag and aluminum in both 7 and 10 spoke designs. They look almost identical, but the weights are pretty different (7.7 kg v. 8.3 kg for the 7 spoke design, and they don't even give the 10 spoke aluminum weight - mag 10 spoke are 7.6 kg average).

I'm itching to get them on the track. Feb 7 will by the first test run.

 

OK - just tried to mount them and now I need help. The front wheel spacers are too short. When I tighten down the front axle bolt, the brakes pinch the discs to the point where the front wheel won't turn (and there's no brake fluid, so the brakes aren't engaged).

The picture below shows one spacer. It adds 18.5 mm. My bet (eyeing the distance) is that it needs to add between 21.5 mm to 22.5 mm.

Anyone know where to get different size wheel spacers for a marchesini wheel? Any other ideas? I'm betting I could just stick in a normal washer with a 20mm interior diameter. Thoughts?

Thanks in advance for any help.

 

Because the wheel is a dynamic part under stress, I wouldn't be comfortable in shimming it up to perceived fitment. I would contact a US distributor of March, and verify parts with them to be sure you have the right spacers for the right application (not all 600RRs have the same front spacers.)

 

I need to change the title of this thread to "Basking in my own stupidity".

After posting to message boards, emailing manufacturer and contacting suppliers, the answer (which I figured out after engaging my brain for a moment) is that the spacers are different sizes on left and right. So... just switched them around and the rim, rotors and calipers all fit like a glove.

Anyway, please go ahead and laugh at my expense...

 

Anyway, please go ahead and laugh at my expense...

If it makes you feel any better a friend told me about a story with a Goldwing that was being worked on at the shop he worked at. Long story short but customer complaint & extensive work in the engine turned out to be carb boots that had been installed backwards by previous owner causing vacuum leak. Doh!





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I wont lol.

 

What really makes me feel better is my first race weekend on the new setup. Improved my previous best lap (last year) by :02 (1:44 at MSR Houston), and I took first in the Formula 40 MiddleWeight Novice race - my first podium finish ever. :wave:

It had to be the new tires/brakes!

Here's an article about the race - the results are at the bottom - http://www.roadracingworld.com/news/cmra-racer-thornton-breaks-motorcycle-lap-record-at-msr-houston/

 

Congrats :banger: Here is to a win at your next race!