So the forks I picked up seem to be about 2 inches shorter than the stock forks. So that may bring the front wheel in some so maybe a few inches in the back won't be so bad?
A 3 inch over arm would put you at about an inch longer than a BMW 1200 twin, and you would beabout 5 1/2 shorter than a Rocket Three..
The 750 F is actually an inch longer than a Busa..
afkrejci90, no, it just doesn't work like that mate, I've explained in a previous post why . Those comparisons are all over the place Frank, The op wants his bike to handle and you compare it to a Rocket 3...
It matters not what any other bikes dimensions are, a rocket 3 basically has a car engine sideways in a bike frame, the end result is a really long bike thats geometry is based on how the bike had to be built, it means absolutely nothing when compared to any other bike, not a single thing, apart from the fact that its a motorcycle. Ask yourself why all modern sport bikes are built to within a whisker of each other..? Similar rake, similar trail, similar wheelbase...? Any modern sport bike has a longer swingarm due to 2 reasons, 1st is that the engines are so much more compact {piggy backed gearboxes], so to retain a good wheelbase the have extended the swingarm, and 2nd is that the longer swingarm {still in the compact wheelbase} makes the rear suspension perform better, its a balance, to get the same performance from a longer swingarm on a 750 Honda, you'd have to move the swingarm pivot further forward {which is impossible due to lack of room}, its as simple as that. A better change is changing the angle of the rear shocks like Pops Yoshimura did. To the OP, Your 2 inch shorter forks will decrease rake, changing the whole front end, if you use the 17 inch wheel, which steers faster, you then need to calculate rake and trail to find a suitable offset for the triple clamps, {the GSXR clamps may work at that height, give me a few measurements and I can give you a close estimate of the trail you'll have} If you use a 19 inch front wheel, you'll still be an inch lower than stock, your trail will be less that stock which is right on the limit as far as trail goes, the bike would be more nervous at the front, more prone to tank slappers, just throwing on any swingarm and front end is NOT the way to make a older bike handle well. Adding a longer swingarm is going in the opposite direction at the rear, you'll have a faster steering front end and a slower steering rear end with a completely different front to rear weight ratio or bias, because you've effectively brought the front end in at the front and the rear end out at the rear {also watch clearance of you tire to the exhaust, you will be closer now}.... I assume when you say the you want a more "sport set up" you want to actually improve handling..? I'm going through all this at the moment, I'm currently waiting for a custom set of triple clamps to turn up in the mail to suit the 41mm forks I'm using, My front end will retain stock height and I'm running an 18 inch front and rear wheel combination and a Calfab alloy swingarm with a inch extra length in the adjusters and a braced frame, using the 18 inch front wheel quickens steering slightly, my clamps have less offset to keep the trail in an acceptable range for the street... I still have to work out spring rates for the front, The bike will handle and stop very well
Anyone can just shove new parts on an old bike, I see it all the time, if that what you want to do then go right ahead, I responded because you said you want a good handling bike....
I'd love to see Frank {754} add some technical details to one of these discussions, feel free to point out any errors I've made, with a detailed explanation, just bolting on miss matched parts is NOT the way to make a good handling bike, I don't care what anyone says, and this is the reason I now usually have these discussions via PM's....
