« previous next »
Pages: [1] 2 3 4   Go Down

Author Topic: perfect sprocket size?  (Read 5639 times)

0 Members and 1 Guest are viewing this topic.

Offline Voodoochikin04

  • Vip Eye candy Supplier!!
  • VIP
  • *
  • Posts: 1757
perfect sprocket size?
« on: August 18, 2009, 07:11:53 PM »
i currently have a 14 tooth front and a 55 rear...  my rear tires are 22 inches.   its not enough... my 1st gear is kinda lugish untill high rpms.. cant use 6th gear...   how do i figure out the perfect rear sprocket size? i want stump pulling force in 1st, and good crusing power in 6th..  doug told me the 72 tooth one he has is too big, i believe him, but how do i figure out what i need.. :)
Logged
"it's only when you have lost everything, that your free to do anything"

Offline Boostinjdm

  • Hero Member
  • ****
  • Posts: 1609
Re: perfect sprocket size?
« Reply #1 on: August 18, 2009, 08:07:18 PM »
I tried to help, but management thought it nessesary to pussify my post :police: .
« Last Edit: August 19, 2009, 02:24:45 AM by Boostinjdm »
Logged
This post has been edited due to content.

Offline fabr

  • Administrator
  • *
  • Posts: 93193
Re: perfect sprocket size?
« Reply #2 on: August 18, 2009, 08:46:12 PM »
What do you wish for top speed? What is your 6th gear ratio? What is the internal primary reduction? What is redline rpm?
Logged
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I participate in your fantasy"

Offline Doug Heim

  • Bad @$$ Buggy Builder & Parts Supplier
  • Forum Sponsor
  • *
  • Posts: 2739
    • Doug Heim's Photo Bucket
Re: perfect sprocket size?
« Reply #3 on: August 18, 2009, 09:22:09 PM »
What motor you running? Ill send you the 72 if youd like to try it and you can trade it in for a 60 as long as its not trashed.
Logged

Offline fabr

  • Administrator
  • *
  • Posts: 93193
Re: perfect sprocket size?
« Reply #4 on: August 18, 2009, 09:24:18 PM »
why not do a bit of calculating first?
Logged
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I participate in your fantasy"

Offline Boostinjdm

  • Hero Member
  • ****
  • Posts: 1609
Re: perfect sprocket size?
« Reply #5 on: August 19, 2009, 02:39:15 AM »
Quote from: Masterfabr on August 18, 2009, 09:24:18 PM
why not do a bit of calculating first?

Calculate what?  What he wants?


What he's got doesn't work, one whole gear that can't be used.  According to the "experts" he's already 3 teeth too small on the front so can't drop any more there.  So there is only one direction left to go....
If 72 is too big then throw the next biggest gear on the rear and go from there.
« Last Edit: August 19, 2009, 05:51:42 AM by Masterfabr »
Logged
This post has been edited due to content.

Offline fabr

  • Administrator
  • *
  • Posts: 93193
Re: perfect sprocket size?
« Reply #6 on: August 19, 2009, 05:50:08 AM »
Quote from: Boostinjdm on August 19, 2009, 02:39:15 AM
Calculate what?  What he wants?

You know the old saying, want in one hand shit in the other..... ::)

What he's got doesn't work, one whole gear that can't be used.  According to the "experts" he's already 3 teeth too small on the front so can't drop any more there.  So there is only one direction left to go....
If 72 is too big then throw the next biggest gear on the rear and go from there.
Irepeat for those that don't read posts before replying   "What do you wish for top speed? What is your 6th gear ratio? What is the internal primary reduction? What is redline rpm? "

Why take a guess at something when a bit of calculating will get you to where you need to be?

No shit?  LMAO
Logged
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I participate in your fantasy"

SPEC

  • Guest
Re: perfect sprocket size?
« Reply #7 on: August 19, 2009, 07:15:28 AM »
It seems obvious to me...
1st gear is sluggish and needs the clutch to be used excessively...
Can't use 6th gear...so clearly he's geared way too fooken high...
Chicken, go to a larger rear sprocket or to a 20" tire...
I really am tired of the constant insults you hurl boost...
Find some one else to pick on
Logged

Offline Carlriddle

  • Another build? What are you thinking?
  • Hero Member
  • ****
  • Posts: 4595
Re: perfect sprocket size?
« Reply #8 on: August 19, 2009, 07:59:41 AM »
97' model

                     
      primary      1.756   :1      
                     
         1st   2nd   3rd      
      Ratios   2.866   2.058   1.65      
                  

   
Logged
You can keep your CHANGE, I'd like to keep my DOLLAR.

Offline Voodoochikin04

  • Vip Eye candy Supplier!!
  • VIP
  • *
  • Posts: 1757
Re: perfect sprocket size?
« Reply #9 on: August 19, 2009, 08:15:41 AM »
95 katana (gsx600f), ill have to look in my book at home for all the gearing and primary reduction, unless someone can find in online.. im at work so i cant be online to much..

redline is 13,000rpms. 

i dont really care about top speed, i just wanna be able to use all my gears and have more lower end... 1st gear above 7000rpms is really all i can use for going relativly slow and yet still being able to punch the gas and climb small hills... 2nd 3rd 4th 5th all useless except for higher speeds....  just needs to be geared down..   

doug-  i would take that offer, but my luck the 72 would be to big and something would happen to mangle it for no return. lol.   
« Last Edit: August 19, 2009, 08:18:46 AM by Voodoochikin04 »
Logged
"it's only when you have lost everything, that your free to do anything"

Offline fabr

  • Administrator
  • *
  • Posts: 93193
Re: perfect sprocket size?
« Reply #10 on: August 19, 2009, 08:57:49 AM »
Say 50 mph? 60?  Give me a target. I'll likely nopt be able to run the numbers tonight but I willl tomorrow if no one gets to it first. Just give me the primary reduction and 1st and 6th gear ratios. We can get you in the right ballpark.
Logged
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I participate in your fantasy"

Offline Voodoochikin04

  • Vip Eye candy Supplier!!
  • VIP
  • *
  • Posts: 1757
Re: perfect sprocket size?
« Reply #11 on: August 19, 2009, 11:09:24 AM »
right now i can hit 65mph, according to a car following me.. so.. hear say?  thats without 6th..  when i use 6th gear on flat or uphill road, it slowly bogs down...
Logged
"it's only when you have lost everything, that your free to do anything"

Offline ace

  • "project storage expert"
  • Grunt worker
  • *
  • Posts: 74
Re: perfect sprocket size?
« Reply #12 on: August 19, 2009, 01:47:21 PM »
Is your engine up to par?
That already seems "low geared"
To me? But I could be wrong.
Logged

Offline Voodoochikin04

  • Vip Eye candy Supplier!!
  • VIP
  • *
  • Posts: 1757
Re: perfect sprocket size?
« Reply #13 on: August 19, 2009, 01:49:33 PM »
yea engine is fine, got carbs cleaned and changed oil, and air filter.. runs great.. 

well i dont know what to call it.. geared to high or to low, but it needs more acceleration... so whatever sprocket size will work..
Logged
"it's only when you have lost everything, that your free to do anything"

Offline ace

  • "project storage expert"
  • Grunt worker
  • *
  • Posts: 74
Re: perfect sprocket size?
« Reply #14 on: August 19, 2009, 01:51:36 PM »
What is your buggys total weight?
Logged
Pages: [1] 2 3 4   Go Up
« previous next »
 
SimplePortal 2.3.7 © 2008-2024, SimplePortal