The CBR looks great but the Ninja would leave it behind as if it were pulling a boat anchor. The Ninja is the same or less money so it's a no brainer to me. The caveat is the CBR can be had with ABS.

I had a 2008 Ninja250R for a season and I really liked that bike. If it were not for the fact I just bought it to repair and sell for a profit I'd have kept it. Plus if it were any color but that Kawasaki green which I don't care for, especially on a streetbike. :roll:

My girlfriend at the time and I rode that bike 5,000 miles in one summer. :D

With some other projects on hold i decided to try a gear change on the megelli . I took some measurements and came up with Jtr819 sprockets as a fit . http://www.jtsprockets.com/52.0.html...el_uid=1612&p= However 41t is all that is listed in this sprocket . i want to try a bigger change . found jtr1825 only thing is center bore is smaller by 4mm , but sizes from 37 to 48 teeth are available . http://www.jtsprockets.com/52.0.html...el_uid=5723&p=[url] I found and bought a 48 tooth on ebay . so when i get it ,I'll be looking to see if opening up the center hole or turning down the wheel ,is a better way to go to give myself more options . this is a chart to show the ratio difference http://i440.photobucket.com/albums/q...Megelli002.jpg

Dont change anything on the wheel. Only work on the procket. I'd use a machine shop if you could. The steel the sprockets are made of is very strong and difficult to cut/grind.

Once i have the sprocket in hand and the wheel off , I'll be able to see whats there . I could chuck the sprocket or wheel on a lathe at work . actually just the cushy drive part not the whole wheel

If you have access to a lathe and know how to use it (I sure don't :roll: ) that would be your best bet. Considering the sprocket is the cheaper and more easily replaced part that's the one I would modify.

Sprocket in hand . I have to say I'm inclined to machine the sprocket hub and not the sprocket , doing so gives me the easy option of the jtr1825 lineup ( Rear sprocket available in: 37, 38, 40, 41, 42, 45, 46, 47, 48 teeth ) even the 37t OE size is possible in JT's lineup and i wouldn't have to machine each size to try it . megelli only has a 39 or 40t sprocket as options . here are some photo's . If there's something important I'm missing feel free to yell . http://i440.photobucket.com/albums/q...Megelli005.jpg http://i440.photobucket.com/albums/q...Megelli006.jpg http://i440.photobucket.com/albums/q...Megelli014.jpg http://i440.photobucket.com/albums/q...Megelli011.jpg http://i440.photobucket.com/albums/q...Megelli010.jpg http://i440.photobucket.com/albums/q...Megelli004.jpg

I think either would work but I'd still cut the sprocket rather than the bike part. The sprocket is cheap and easy to replace, the hub is not. Just my 2 cents. :D

After seeing that list of available sprockets, I'd machine the hub. Before you do, have you identified which hub yours is based on?

Seems to be suzuki bolt pattern . jtr819 is a close fit ,but harder to find and fewer sizes .
http://i440.photobucket.com/albums/q...50r/jtr819.jpg 80-81 gs250 Rear sprocket available in: 37, 39, 46, 47 teeth . Bolt holes would need to be opened to 10.5

I would definitely machine the hub, Racer. ;) You only need to remove 2mm from the hub's radius, and you will have a much larger selection of sprockets to choose from. :)

Spud :)

Looks easier to me to chuck up the hub and cut it down to fit the new sprocket. Maybe use an engraver on the hub to mark the new sprocket model # so it will be easier for you or the next owner to ID when it comes time to change the sprocket.

Excellent logic. :D

I have been soundly outvoted!

Anyway, make it fit and let us know how it works! :D

Machining done Cell phone photos .

• http://i440.photobucket.com/albums/q...rocket-hub.jpg

Good pics and good job. i envy your skills and access to the equipment. :D