Thunderbike Questions

[sPatlovich1]

 New here to CCS. Raced all last year with wera, and now I am looking at running ccs this year. looks like my 93 cbr f2 will qualify for thunderbike. looking to see what I can expect with this class. I have looked through the rulebook, and wondering what tire is allowed for this class? I have been running Bridgestone slicks. would these be allowed in this class?
Thanks in advance, looking forward to meeting/racing you guys in 2013.
- Steve.

[roadracer162]

Yes. Consider it like Superbike rules

[2blueYam]

Hint on the CCS rulebook:  Unlike the WERA rule book, in CCS, if it doesn't say that you can't do it then you can do it.  Since there is nothing about tires in the Thunderbike section of the rule book, you can run whatever tire you like.

[LWT Racer]

Rulebook says "Four cylinder, liquid cooled, 1990 to 1992 model year, up to 650cc"

From the sounds of that... 93, even tho same bike, would be out of the picture? 

[roadracer162]

Swiest- special ruling on the F2 exempts it from the ruling allowing it to be run. I am not sure if that special ruling allows the FZR 600 the same latitude as that bike remains unchanged for a number of years later.

[roadracer162]

I do like the Thunderbike format although some bikes may have a huge advantage. A well built SB SV 650 has done well. But so does the Ducati 748/749, Bimota, RS 250, and some of the Buells. In my minds eye the water cooled 600 is at a disadvantage but that's why there is the 650cc limit for those bikes. Even older water cooled inline model years can go bigger to 750cc I think. There was one such FZR built to 735cc and producing some 110 hp

[Woofentino Pugrossi]

Rulebook says "Four cylinder, liquid cooled, 1990 to 1992 model year, up to 650cc"

From the sounds of that... 93, even tho same bike, would be out of the picture? 

I ran a 93 in Thunderbike when they started Thunderbike (used to be called HW Sportsman). Since its unchanged from 92, K.E. said it was ok as was FZR600's to 99. I kept a copy of the email from him in my tool box JIC tech had issues.

[roadracer162]

Would you forward that email to me, please. I had heard the same maybe on this forum.

[Woofentino Pugrossi]

I'll see if I can dig it up (if I still even have it). Its been 8yrs since I raced that bike.

[sPatlovich1]

Ok, so my next question is this, my f2 has f3 upper and lower on it with a stock f2 seat and racetail.I also have a double bubble. looking through the rulebook it appears as there is no real stipulation on the bodywork. Will it be ok for me to run the f3 upper and lower? Thanks, -Steve

[Woofentino Pugrossi]

You can use whatever bodywork you want. Just requires an oil retaining belly pan.

[Xian_13]

I do like the Thunderbike format although some bikes may have a huge advantage. A well built SB SV 650 has done well. But so does the Ducati 748/749, Bimota, RS 250, and some of the Buells. In my minds eye the water cooled 600 is at a disadvantage but that's why there is the 650cc limit for those bikes. Even older water cooled inline model years can go bigger to 750cc I think. There was one such FZR built to 735cc and producing some 110 hp

I had a FZR-400 with a "franken-motor", with was a combination of a YZF-600 and a FZR-600(with an over-bore).
Total displacement was 685cc, on 91 pump gas it made 110.

What I learned with that bike is, HP numbers are not everything.
The bike had a small, small window of a powerband. Getting out of that window was worst then riding a 250GP bike.

The class "Over-dog" is the 749R.


-X