YZ gearing for the desert... - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-31-2002, 11:56 PM
cleartoy
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YZ gearing for the desert...

Ive got a 99 YZ 250, with the only mods to the motor being exhaust, filter, rejet. Stock size rear tire and sprockets.

Since ive owned it, ive ridden strictly sand dunes, and its been awesome.

Today i went to Ocotillo Wells, which consists of long fast straightaways. Well, to make a long story short, i need a 6th gear. I could not believe how slow this thing is in 5th(top) gear! I could not have been doin more than say 50-55.

My last ride was a Banshee, and it would do 75 EASY! Granted it was a 6spd. I guess they geared this bike low for hills and MX. Im thinkin ill just add a tooth to the front sprocket, and it will make a big difference.

Any other YZ owners, or really any 250 2 stroke bikers change their gearing for the desert??

Thanks all!

-cleartoy
85 xtracab 4x4(FOR SALE)
94 std cab 2wd
99 YZ250
Got sand?


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post #2 of (permalink) Old 02-02-2002, 07:42 PM
**DONOTDELETE**
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Re: YZ gearing for the desert...



I have a 48 rear on my CR250, and I top out about 65. The formula is the less tooth rear, the less bottom end, and more top end. I don't mess with the front sproket. Rear is too easy to change. I usually change back to the 50 tooth rear for Elsinore, or any other track. Keep for the 50 tooth for the dunes as well...the bike needs the extra power off the bottom end.

Ryno

PS-Going to Ocotillo President's Day??

post #3 of (permalink) Old 02-02-2002, 10:46 PM
cleartoy
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Re: YZ gearing for the desert...

Im planning on being in Ocotillo the 9th-10th. I may go the 16th-17th. I hate crowds, and i know its gonnna be a big weekend the 16-17th. However, ive started a new job and have weekends off.

Im thinking ill add a tooth to the front. That will put less wear on the chain. IMHO, i think the front sprocket is easier to change. Just pull cover, the chain, bust the nut, and its off. To do the rear, you gotta take the wheel off.

Welp, cya in the desert.

-cleartoy
85 xtracab 4x4(FOR SALE)
94 std cab 2wd
99 YZ250
Got sand?


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post #4 of (permalink) Old 02-04-2002, 12:43 PM
**DONOTDELETE**
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Re: YZ gearing for the desert...

one in the front is like 3 in the rear, i had one smaller in the rear on my old yz and it made a big diff. if you go one down in the front it will cause the sprocket to wear fatster since there is less surface to disperse the load. but who cares. dirtbike says top speed is 77mph, but it doesn't feel like that on my 99 either, and i ve had it pinned!!!!

post #5 of (permalink) Old 02-04-2002, 06:37 PM
**DONOTDELETE**
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Re: YZ gearing for the desert...

the shop i go to's owner has a 96 cr250 that tops out at 93 on his computer thing for the enduros so how long goes it take these bikes to get mooving?
65? 125's do that dont they?

WELCOME TO NEW JERSEY PLEASE THROW AWAY YOUR CONSTUIONS.

P.S. NJ BLOWS
post #6 of (permalink) Old 02-04-2002, 11:32 PM
cleartoy
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Re: YZ gearing for the desert...

Of course im just guessin it was 50-55. Maybe it was more, but i just felt like a turtle.

If i go taller gearing, ill be adding a tooth to the front sprocket.



-cleartoy
85 xtracab 4x4(FOR SALE)
94 std cab 2wd
99 YZ250
Got sand?


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