Formula 3

[jeremiah moreno]

I see that the Harley XR1200 is allowed in Formula 3, does that mean that a Buell XB12 will be allowed as well, seeing as it virtually the same engine (pushrod, air-cooled, 1203cc, twin cylinder)

[Dennis King]

Same motor, two completely different bikes.

[Chris Pearson]

Same motor, two completely different bikes.

The same in appearance only. I've got an XR 1200. I wish it had as much horsepower as the XB engine.

[Dennis King]

The same in appearance only. I've got an XR 1200. I wish it had as much horsepower as the XB engine.

It's like Chevy uses the same motor in the Silverado truck as it uses in the Corvette but they're tuned for completely different uses.

[Chris Pearson]

It's like Chevy uses the same motor in the Silverado truck as it uses in the Corvette but they're tuned for completely different uses.

Depends on the year models. Some of the Buells had a lighter flywheel, different cases, reversed cams, different crankshaft. I believe the 04 and later Sportsters had a top end which was the same as the Buell. The tube frame Buells were very close to the Sportster motor with the difference being the heads.

[jeremiah moreno]

The XR1200 motor is VERY similar to the XB motors. If anything, the XR1200 has an advantage because it has oil cooling ports in the cylinder and heads, much like water jackets on a liquid cool bike, which XB's do not have. XR1200's use the same set-up/type of oil pump, read valve set up in the crankcase (to relieve pressure under the piston on the down stroke of the pistons), lightened flywheel, almost identical profile cams, oil cooler, fuel injection, ect. ect. The only advantage the XB engine has, is a downdraft throttle body. Now as far as chassis is concerned, yes, the Buell is far superior. So, going back to my original question, Will the Buell XB be allowed in Formula 3?

[Andy Gilliland]

The buell has 20+hp more and 100+lbs less weight than the xr1200

[Jim Dugger]

The XB9 is allowed, for sure.

I'm not sure if Walter ever ruled on the XB12...

[jeremiah moreno]

Thanks Jim!!

[Walter Walker]

Sorry, no XB12.