Brokenchickenleg
Registered
I have been running 17/45 for drag racing. With me at 230 pounds suited, do you think my turbo gearing is right at 19/44 with 240hp?
19 tooth front sprocket
- Thread starter Brokenchickenleg
- Start date
Ya but Kevin isn't stock AND spraying nitrous (not to mention 5-miles to accel)...
He's actually still running the 19 and (I believe) a 41 on the street and drag strip. Though he bogged off the line, he pulled the top end at the 1/8 to 120mph on the slip...I figured that was pretty decent for that type of gearing.
We had the track to ourselves...fun day, if you didn't see it I posted a vid
OK, I had the 40 tooth sprocket put on. Bike runs much better for a street driver. Still shows 6th gear - 50mph - around 2500 rpms. This has improved first gear a lot. It has in no way over geared the bike for fast running on the freeway and general quick street riding. It might be the perfect street set up. When I hammer it in second gear it really growls with the two brothers! Sounds awesome!
Well, it works great guys. I hammered it a little in first and it still takes off like a raped ape. Much nicer gearing if your not racing. Also, it was a Sunstar factory gear from our sponsor Honda east. They are the factory lightwieght steel sprocket. I would not hesitate for a street bike!
Well, it works great guys. I hammered it a little in first and it still takes off like a raped ape. Much nicer gearing if your not racing. Also, it was a Sunstar factory gear from our sponsor Honda east. They are the factory lightwieght steel sprocket. I would not hesitate for a street bike!
I got to do a full ride on the new gearing, it works great. The bike is not over geared. 6th gear is perfect for freeway riding. So, if you are a street rider, don't be afraid of the 19/40 sprockets. I can run it down to 10 mph before I must pull in the clutch. Really it rides normal. I add 5mph to whatever speed the speedo says so I don't get a ticket.
critterdoc
Banned
I upped a couple of teeth on the rear sprocket of my Ducati. Most riders do, particularly on the midsized Ducs, because they're geared so tall. I can see the reasoning behind changing sprocket sizes on the Busa for drag racing, but isn't the standard setup pretty much perfect for street riding?
Some guys had questioned me about using the new gears for highway riding. It works perfect. In 6th gear at 80mph on the speedo (probably 85 to 87 actual) the rpms read 4200. Perfect fast cruising rpm. Great gas mileage and still enough power to step it up into warp speed! I just did a 120+ mile freeway ride and it was a BLAST! Took her up to 9000rpm in third and it really scoots.
Kept going past 100 with ease of course.
I really like the Gen 2 motor. It will pull from 2000rpm up.
The thing is just so good at getting around quick, we need new national speed laws! YEEHAW!!
Kept going past 100 with ease of course. I really like the Gen 2 motor. It will pull from 2000rpm up.
The thing is just so good at getting around quick, we need new national speed laws! YEEHAW!!
Lots of factors but I ran 18/41 to go 200+ and that's good for 206-207ish. I would think 19/40 is to tall unless you are making 300rwhp+?
In that case, stick to a 41 because if you go 18/40 on a Gen-II you will have to shorten the chain. It's really not hard to change the front sprocket, if you have an impact gun it doesn't take long at all...
They make it for the Gen-II also but I'm not sure if it will fit stock. You might have to massage a few things to get it to fit...
I think I am going to go with the stock front and a 38 on the rear for my style/use of the bike. As suggested by Got-Busa I will get a chain tool and a new chain and shorten the chain by a couple of links to make it fit right.
This should bring my RPM down about 400-500 cruising on the highway, which will save a lot of cash in the end. Will make the ride that much more comfortable as well and bring the RPM down to around 3400-3500.
This should bring my RPM down about 400-500 cruising on the highway, which will save a lot of cash in the end. Will make the ride that much more comfortable as well and bring the RPM down to around 3400-3500.
I'm going to take your word for the raped ape reference as I have no actual experience on how a raped ape takes off....
Dropping 5-teeth on the rear is going to be a BIG change. I would be careful with that choice since you will shorten the chain a lot. That's like going to a 20/42.....should be great for the HWY but first gear is going to be LONG...
Thanks for the input, this is why the org is a great place. I do 90% of my riding on the interstate and figure that when I get into the twisties I will be able to gear down a bit and get the RPM's up where I like them.
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