Jump to content

Trying to understand Gearing


2strokes4u

Recommended Posts

Can someone explain tall gearing vs short gearing. I drag race on asphalt and was wondering how the gearing effect torque. I am running a 17t front and 38t rear. I run on the street and the gearing is damn near perfect for the 1/8th mile. What I am wondering is if I go to an 18t front, will that increase the pull down low, up top or all around?

Link to comment
Share on other sites

I ran the 18 before and motor can pull it with no problem. I guess I need to get it to the track and try both  sprockets and see what the times look like. I was just curious because I am running bigger bikes now and i want as much pull as possible across all gears. 

 

I ran a 10 mil cub ported on alky, stock head without a wheelie bar and that was his mistake. I jumped out on him and never saw him again. I have a 7mil on race gas (unported). 

 

I know that he next time he will have a wheelie bar and it should be a better race. I plan to get ported and alky in fall. For the time being I thought that I would play with gearing to see if i could get a better pull through all gears. 

Link to comment
Share on other sites

Can someone explain tall gearing vs short gearing. I drag race on asphalt and was wondering how the gearing effect torque. I am running a 17t front and 38t rear. I run on the street and the gearing is damn near perfect for the 1/8th mile. What I am wondering is if I go to an 18t front, will that increase the pull down low, up top or all around?

 

Going to a 18 you will lose the pull down low & increase your top end if your motor can pull the rpm needed.

 

Your 17/38 gearing is a good combination depending on your primary gears, tire diameter & weight to name a few. 

 

We run a 17/36 (2.12 ratio) for both 1/8 & 1/4 mile. That was with our old 443 gas cub. We would fine tune the gearing + or - of that ratio for track conditions & air readings to name a few.

 

 

I have the same question as well. I think the 18 up front will give u more topend and less spinning off the start. U just have to have the motor to pull it

 

You answered your own question, LOL!

 

You should send SlowerThanYou or Tedder a PM. They will both be able to help you with this. Or link them to this thread.

 

Thanks!

Link to comment
Share on other sites

R u in Florida

 

No, Do my racing in NC.

 

Going to a 18 you will lose the pull down low & increase your top end if your motor can pull the rpm needed.

 

Your 17/38 gearing is a good combination depending on your primary gears, tire diameter & weight to name a few. 

 

We run a 17/36 (2.12 ratio) for both 1/8 & 1/4 mile. That was with our old 443 gas cub. We would fine tune the gearing + or - of that ratio for track conditions & air readings to name a few.

 

 

 

You answered your own question, LOL!

 

 

Thanks!

 

Thanks,, I have banshee sprocket hub now but would like to get honda hub to try 36t in the rear. Figured I would just wait until I get the drag axle instead of wasting time getting a hub for stock axle. My primary gears are stock ratio straight cuts, running an 18 inch tire and bike is heavy as hell...stock chassis and I am 215lbs. 

Link to comment
Share on other sites

No, Do my racing in NC.

 

 

Thanks,, I have banshee sprocket hub now but would like to get honda hub to try 36t in the rear. Figured I would just wait until I get the drag axle instead of wasting time getting a hub for stock axle. My primary gears are stock ratio straight cuts, running an 18 inch tire and bike is heavy as hell...stock chassis and I am 215lbs. 

 

The biggest difference in our set-ups is the tire diameter. The 18/38 (2.11 ratio) should be an improvement with a few other adjustments.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...