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F2 vs F3 horsepower difference?

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Old 05-31-2009, 08:20 PM
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Default F2 vs F3 horsepower difference?

What is hp diff. from 93 F2 compared to 97 F3? I have F2 and buddy is getting F3, how much power advantage will he have at trackdays? All things being equal? Thanks.
 
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Old 05-31-2009, 08:53 PM
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F3 will take your *** and hand it to you when you go to bed
 
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Old 05-31-2009, 11:00 PM
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F2's will romp on brand new R1's all day long... It's all relative to who is piloting the machines.

The F3 is a newer more capable machine than the F2, but if neither rider can push either bike to its fullest capabilities, power is a moot point.
 
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Old 06-01-2009, 01:06 AM
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Aint It like a 10hp difference? But anyways pretty much the other guy doesnt have a advantage unless you ride Horrible. I also have a F2 and my brother-in-law has a F3, no difference except Im +2 in the rear so I acclerate faster and low speeds.

So depending on the length of the tracks straight aways if you want an advantage I would get a different sproket. But thats up to you and track conditions. But I also dont track my Bike.
 
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Old 06-01-2009, 07:14 AM
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F3's made about 1hp more on average on a dyno. They might make 2-3hp more at top speed with the ram air, which is actually really pathetic. But don't forget F3's are also heavier, so given equal riders, they will be about the same.
 
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Old 06-01-2009, 07:57 AM
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Thanks guys, both are set up for track with different susp. F2 has -1 front,+2 rear sprocket. F3 stock gearing. I just didn't know if I should have F3 envy. Thanks for the input.
 
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Old 06-01-2009, 09:09 AM
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There are a lot of other variables you can change to further your advantages... If his bike is still quite stock you have many options to get the edge (not that you will need much, there's a reason you see a TON of F2 race bikes, and almost zero F3 and F4's)

You've already covered gearing, which can change based on the track you are riding at.

Braking is another BIG advantage that many people ignore, half the race is won with your brakes. Oversized rotors, quality pads and steel brake lines are great tools.

Suspension set up for your weight is a must-do, as well as upgrades like stiffer springs and heavier fork oil. Cartridge emulators are also available.

A good track tire will also give you great confidence going hard into the corners, DOT's or race spec slicks... Whatever you can afford!
 
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Old 06-01-2009, 04:54 PM
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Originally Posted by radboy58 View Post
I just didn't know if I should have F3 envy.
F3's suck. F2's are way better.
 
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Old 06-02-2009, 01:37 AM
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i just bought a F2 and it sounds like i made a pretty good choice!
 
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Old 06-02-2009, 08:42 AM
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Originally Posted by Hershey View Post
There are a lot of other variables you can change to further your advantages... If his bike is still quite stock you have many options to get the edge (not that you will need much, there's a reason you see a TON of F2 race bikes, and almost zero F3 and F4's)

You've already covered gearing, which can change based on the track you are riding at.

Braking is another BIG advantage that many people ignore, half the race is won with your brakes. Oversized rotors, quality pads and steel brake lines are great tools.

Suspension set up for your weight is a must-do, as well as upgrades like stiffer springs and heavier fork oil. Cartridge emulators are also available.

A good track tire will also give you great confidence going hard into the corners, DOT's or race spec slicks... Whatever you can afford!
i dont know where you're looking that you dont see many F3 race bikes but most of the F series racers that i see are F3s or F3 motors in an F2 chasis with F3 forks, or overbored F2 motors in an F3 chasis.
Depending on your year F2 you may have either dampening rod forks or cartridge forks. But you're still going to have the "crappy" fixed small rotors compared to the F3's larger semi-floating rotors. That and the F2 rear wheel is 4.5" while the F3 is 5". doesnt sound link much but it makes the contact patch with the 160 tire easier to use compared to the F2. That and you have the option of getting a 180 tire on there and still using most of the edge. ive seen a 180 on a 4.5 and its not pretty.
that said, if you get your suspension set up you'll have an advantage over someone who doesnt. I ran my F3 against guys on new R6s and 600RR and finished mid field because i was a better rider and had my bike set up for me.
get your bike set up, get some good tires (i always suggest bridgestone, but im partial), get comfortable and you'll do great
 
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