Should I go down a tooth to clear big doubles?


12 replies to this topic
  • m4crampt

Posted May 14, 2007 - 02:40 PM

#1

I'm running the stock 49 tooth sprocket and I'm having trouble clearing big doubles and triples. I'm especially having trouble clearing the jumps right out of turns. Should I drop a tooth in the rear or just keep trying to clear the jumps with the stock setup?

  • grayracer513

Posted May 14, 2007 - 03:21 PM

#2

http://www.thumperta...782#post4562782

  • CaptainKnobby

Posted May 14, 2007 - 05:07 PM

#3

I'm running the stock 49 tooth sprocket and I'm having trouble clearing big doubles and triples. I'm especially having trouble clearing the jumps right out of turns. Should I drop a tooth in the rear or just keep trying to clear the jumps with the stock setup?

Go up to a 51 tooth on the rear! I did and was having the same trouble your having and it is a difference between night and day, you'll love it:applause: and love the way it pulls from a dead stop in second. And dont forget to do the 1/4 turn throttle mod!!!! with those two combos it will RIP!:applause:

  • adamdf

Posted May 15, 2007 - 05:58 AM

#4

Amm, you don't drop teeth on the rear sprocket to improve acceleration. You add teeth. For someone jumping big doubles and triples, you should know that already!:applause:

If i were you i would go up one tooth at a time.

  • Ranger18

Posted May 15, 2007 - 06:41 AM

#5

A 50 or 51 tooth rear sprocket, plus a different pipe that increases the low end. You could also try the zipty carb mod. Those three things should get you over just about anything, no matter how close the jump is out of the turn.

  • motox100

Posted May 15, 2007 - 07:19 AM

#6

I'm running the stock 49 tooth sprocket and I'm having trouble clearing big doubles and triples. I'm especially having trouble clearing the jumps right out of turns. Should I drop a tooth in the rear or just keep trying to clear the jumps with the stock setup?


Are you being serious?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Maximus83

Posted May 15, 2007 - 10:43 AM

#7

Are you being serious?


whatever, simple mistake

  • Ga426owner

Posted May 15, 2007 - 01:38 PM

#8

I assume you are twisting the throttle .... but I had to ask as a lot of riders think they are but are not :applause:
Try going up 1 tooth at a time on the rear....all depends on track conditions, size, length, tightness etc.... If you go up you do lose some top end, so going up too much can be bad, again depending on the track. You may clear every jump with ease but you may get spanked on every long straight....A 49 or 50 works as a avg baseline,,,,each track will differ on what gearing to go with. Supercross type tracks usually always mandate 2 + or more from 49.
Also any way to increase bottom will help. The Zipty mod, the 1/4 throttle mod a new pipe etc........the list is endless, just don't over gear it, you will be sorry:thumbsdn:

  • grayracer513

Posted May 15, 2007 - 02:59 PM

#9

Are you being serious?

It depends on why he's having trouble clearing the jumps, doesn't it? What if the gear he leaves the corner in revs out too quickly, and the next higher one doesn't pull off the turn well because it's too high? You could cure that by going either way with the gearing. Depends on how the rest of the track lays out.

  • m4crampt

Posted May 15, 2007 - 03:01 PM

#10

Thanks for all the help, I appreciate it. I'm going to try adding a tooth in the rear and twisting the throttle a bit more. A bit more gas couldn't hurt anything. Well, unless I hit the face of the next jump.

  • Ga426owner

Posted May 15, 2007 - 04:03 PM

#11

Thanks for all the help, I appreciate it. I'm going to try adding a tooth in the rear and twisting the throttle a bit more. A bit more gas couldn't hurt anything. Well, unless I hit the face of the next jump.



Thats when you know you twisted the throttle....completely :applause:

  • Captaincautious7

Posted May 15, 2007 - 05:15 PM

#12

It really depends on how you look at it. If you are coming out of a corner and having to shift to 3rd and not getting enough pull as you hit the jump, you might consider reducing teeth as you initially said. This can enable you to stretch your gearing out which would let you hit that same jump in 2nd instead of 3rd which helps reduce your shifting and achieve what you want. The downside to increasing your teeth is you reduce your overall gearing which can cause you to shift a great deal on longer tracks. So alot depends on which type of tracks you ride.

  • motox100

Posted May 16, 2007 - 08:06 AM

#13

It depends on why he's having trouble clearing the jumps, doesn't it? What if the gear he leaves the corner in revs out too quickly, and the next higher one doesn't pull off the turn well because it's too high? You could cure that by going either way with the gearing. Depends on how the rest of the track lays out.


In all honesty, most people can't tell much of a difference of one tooth on the rear sprocket (on a track) and the people that can wouldn't be asking if changing the gearing will help them clear a double.





Related Content

Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

First Hare scramble tips by dhend8


Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies
Forums
Photo

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies
Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.