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From the GCR:
Overall Length: Minimum 110”
Maximum 150”
Overall Width: Minimum 50”
Maximum 55”
Weight: see spec line at end of

"Sports car noses are recommended provided they do not extend beyond the outside edge of the front tires."

I was replying to why they look like a sports car, and if the cockpit was covered, then...

From the GCR F500 Bodywork section: Sports car noses are recommended provided they do not extend beyond the outside edge of the front tires.

CR

Just looking at the bodywork I can see some places where it's change that's all buddy...

That might also mean less down force, so.....

CR

Wow, 20 hours!!!! Probably what, 5 times that by hand? I'm sure know better, but from what I've been told by a buddy that does smaller foam machining, you can't machine it too fast or the tool bit...

Really SWEET!!! I would have to agree, that's probably the fastest, most accurate way of making a plug from a Solidworks file..... Probably could use it for an investment casting...

That advance...

Jay, I'm not arguing with you, I had stated that a stock motor was around 115hp at the PTO and that the 124hp advertised HP was a little exaggerated... that's all

and 126hp less 6% is what? 118.44hp I was pretty darn close....

What's your experience with the best 2 stroke at the crank?

CR

What was the sled motor desure making back then? I bet it was quite a bit less than 100hp.... And a 94 GSXR750 motor is HUGE!!!!

And at 124hp, that's an inflated factory at the crank rating.... ...

Yah, kinda like the invention everybody thought about, but somebody else invented.....


Somebody had to have some Cojones to go against the two smokers, they are too stupid of a powerplant to...

Exactly, so like I said, the 600 idea was mine, and it wasn't just pulled out of the air. I chose the 600 because the HP output is about right, the size is about right, the weight is right there,...

If that doesn't tell you where the interest is not, I don't know what does.....

Good luck with the new design Jay....

CR

Yes I understand that was a Solidworks rendering, albeit, a pretty vague one!!!! I'm wondering if the entire F600 industry would be turned on it's head with your innovations....

Oh yah, you are...

Lets get the facts straight Murph, it was I Mr Reinhardt that discovered in 2005, that MC driverain was possible and more affordable, and faster, and just makes sense for these cars. Actually, it...

And that's where the disconnect is. BOD CRB ABC whatever, it's all SCCA and they screwed up!

There must be a higher level to take this with a petition, otherwise it's going to be the same old,...

You left out the part of the 2 years prior where the MC committee had tried to create a alternative engine for the class with NO other changes. The committee did EVERYTHING the SCCA asked to create...

And how does that make any sense? We're beating a dead horse here guys...

Let's put together a petition, have everybody in favor put a name to it and send it in, otherwise look for another org to...

Put the whole quote in there Marshal, I was making a point and Jay already shot down his claim with REAL data.

CR

I would also like to make another suggestion regarding the SCCA. It seems that all the letters to the SCCA have been individual, someone should type up a professional letter and attach names to it. ...

Ted, so you're saying that a 100hp CVT 2 stroke would be at a disadvantage to a 50hp gearbox motor? Your statement totally makes no sense, lap times are lap times.

If you read what the SCCA...

Most of the cars, if not all of them have been running IIR's.

Cost of a build, really depends on what you start with, and what you want to end up with.
If it's a running car that came off the...

I agree 100%, these are great looking cars. Your focus should getting THESE cars approved and work with what's already been submitted...

CR

Getting back to the original post what would the perfect F600 class need?

First off some club management with there heads not in their posteriors, and basically a F500 with a 600 motor shoe horned...

Thanks for the link!!! I have been looking at these cars for almost 10 years now....
It amazes me that it has taken this long for us Americans to come up with a motorcycle power Formula car. And...

I have seen on some of the Microsprint sites, that they use a Yamaha R6 starter to replace the Suzuki and Honda starters. The only difference I can see from the fiche, is that the R6 has ball...

Again, if you use a surge tank and position the regulator as I said, it will help reduce if not eliminate the air by purging the air back to the main tank.

CR

If you run the regulator after the fuel pump with the return back to the tank, that will eliminate a lot of air troubles.

A float bowl is a can of worms on it's own!!!

CR

Whatever, just trying to help, you can a lead a horse to water......

CR

Your outta gas or the low pressure pump quit, or your sucking air through one of your extra fittings...etc....

Are you talking about a fuel injected motor or carb? I just picked 1 gallon as a...

OK, you lost me???? Where are you pumping to with the low pressure pump? You still need another reservoir that will hold another gallon of fuel???? So in actuality, the way you describe it, your...

Listen to how you described it, "surge tank". What does that mean? Yes, if the fuel sloshes away from the pickup, what will happen is the level in the surge tank will go down. As long as the fuel...

Well in order for it to suck air, the sump tank would have to be dry. Remember, there's no vent on the sump so the fuel pump will pickup fuel from the whole tank, it won't slosh because it's full. ...

OK s-l-o-w-l-y......

Fuel tank piped directly to the sump tank, out of the sump to the fuel pump. That's it!

CR

The sump is external, the pump is ahead of the sump and between the sump and the fuel rail. It will draw the fuel through as if it was one tank if there is no vent on the sump. What I do is have a...

If you run a surge tank with no vent, just supply and discharge, there's no need for a low pressure pump. We ran this type of system on my Superkart.
I'm building a F600 with a CBR600rr fuelie, and...

Ti actually welds better than SS if you know how to work with it...
You could greatly improve the stock header. It was made for more mids and smooth delivery, and that stupid EPA bull. Shorter and...

Quickshoe, sorry but you're confusing a couple of points. Karter's went larger for lighter/stiffer axles, not stronger axles. I'll take a 40mm axle over a 50mm any day, the 50's are way to fragile....

http://i238.photobucket.com/albums/ff162/ny_racer_xxx/000_00311.jpg?t=1196898181
I don't know if this helps, but the QRE 4 link uses a 1 1/4 axle inside a tube with a bearing on either end, plus a...

One thing to think about is that there's little or no engine braking on a 2 stroke, especially one with a centrifical clutch. Also, if you want to increase breaking, I would add more tire all around...

http://i238.photobucket.com/albums/ff162/ny_racer_xxx/F500%20Parts/CR1010019.jpg?t=1196816654Rochester, snow belt wow!!!! I live in Ossining.
The car is a KBS MkV 1991 I believe, I haven't looked at...

Chris, I have a similar project I'm working on, the F500 with a CBR600rr motor. Kinda stalled at the moment...
I'm also in NY, near NYC, what about you???

Chris R.

John, I was comparing the water pump off the motor to any type of oil pump. I still would think that a oil pump off the motor would take more power to operate than the water pump. At full RPM that...

Super, I am familiar with how the 2 stage water pump mounted units work, thanks for the input though.
Russ, do a search for electric scavenge pump, there are several out there from mild to wild. ...

I'm working on a F500/600 project and was wondering if any of uz guyz had any experience with using and electric scavenge pump? My thought was to possibly drysump tyhe motor using 2 electric pumps...

I assume everybody is aware of what direction the SCCA is going with respect to the F1000 class? Builder class ala DSR. What was a simple conversion, make use of dusty FC cars, will now be another...

Off the subject a bit but has anybody seen the IMSA Lites cars? I saw the West racing version of them at Lime Rock this past weekend. Flat bottom, steel tube frame, ZX10 motors. Very nice

Chris...

Sean, I think you summed it up for all the masses, low cost, big fun!!! There's no need to get crazy and build a high-tech, big buck chassis..

Chris R.

Let me guess, FF2000 use carbon tubs? Makes no sense to use a cost effective powerplant, and a way too expensive chassis....

Chris R.

Lee I still think the SRF is a bad example, it may be subsidized but there's still only one vendor that supplies the car, so there's no competitive pricing at all. Yah, sorry all you vintage...

I'd race a pickup before a SRF!!! Lee first off cut the expense of the Hewland as discussed, and the price of a really expensive outdated Pinto engine. Then consider the fact that SRF's hold their...