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View Full Version : Anyone use this gearing?


hondaracer3x
09-21-2003, 02:59 PM
I just got a 48 tooth aluminum rear from sprocket specialists, and was wondering if anyone uses a gear this big, Are sprocket specialists any good? I plan on using 15/48 for MX. I would put a pic, but It wont work
honda250xrider
09-21-2003, 03:27 PM
you must have mind boggling accerlation but you should lose alot of top speed if you have 18 inch tires with the 48 rear
cals400ex
09-21-2003, 03:29 PM
48 tooth!!! oh my gosh, you won't have any top speed. i have never tried that kind of gearing but for my riding style, i would not like it one bit. you will have to remove the skid plate probally to make it fit. i didn't even know you could get a 48 tooth sprocket.
skemp
09-21-2003, 03:59 PM
Are you talking about a bike? Sprocket Specialists doesn't make anything over a 41 for an EX unless you had a custom sprocket made in which case you would need to remove your skidplate and be left with roughly 2" of ground clearance. So if you are in fact putting a 48 tooth sprocket on there, then yes it is too big. If it is on a bike, no. My friend has a 55 tooth on his RM125 and it works great.
hondaracer3x
09-21-2003, 04:31 PM
I had sprocket specialists custom make it, for my 400ex/CR250. I had 15/44, but it wasn't enough. It should be easy to get the hole shot:D
skemp
09-21-2003, 05:26 PM
I didn't read your sig. I thought you were talking about an EX. I still think you might have ground clearance issues.
09-21-2003, 06:32 PM
15/48???:eek2: :eek2: insane if u get that to work :eek2:
YZEATER
09-22-2003, 07:01 AM
why not just run a 13t countershaft sproket?
hondaracer3x
09-22-2003, 01:44 PM
With the CR250 engine I have to use a 15 front so the chain doesn't dig into the swingarm. the shaft for the sprocket is lower than the 400ex motor was
skemp
09-22-2003, 04:43 PM
What are you going to do about the vibration issues with the CR motor?
Colby@C&DRacing
09-22-2003, 04:59 PM
We run a 16/37 for mx with 18'' tires and really like it:)
David
09-22-2003, 06:23 PM
Renthal makes a 43 tooth rear sprocket.
YZEATER
09-23-2003, 06:03 AM
ok
hondaracer3x
09-23-2003, 07:09 PM
Originally posted by skemp
What are you going to do about the vibration issues with the CR motor?

The vibration was really bad, until I put a head mount on. That took away a lot of the vibration. I had to gusset the frame a lot, so it would take the vibration, and it is not cracking anymore. You can really feal it in the handelbars, but the power of the CR250 motor makes it worth it.