Yamaha Discussions about Yamaha ATVs.

make a raptor go faster

Old Jun 18, 2008 | 11:49 PM
  #1  
Mikeu12's Avatar
Thread Starter
|
Trailblazer
Joined: Jan 2008
Posts: 34
Likes: 0
Default make a raptor go faster

if i wanted 2 drag my raptor to go like 120 mph what can i do expect for changing the gear ratio?
 
Reply
Old Jun 19, 2008 | 12:16 AM
  #2  
91Warrior357's Avatar
Pro Rider
Joined: May 2008
Posts: 1,860
Likes: 0
From: Purcellville.
Default make a raptor go faster

big **** front sprocket, small back, lowered, rev box, p3 controller
 
Reply
Old Jun 19, 2008 | 12:18 AM
  #3  
Raptor450's Avatar
Pro Rider
I ride, because football, basketball, and baseball only uses one ball!
Joined: Dec 2006
Posts: 2,407
Likes: 0
Default make a raptor go faster

Seriously doubt you could ever get your Raptor to go 120 mph. 90 mph might be more realistic with the Raptor engine, but that's still pushing it. You would need several thousand dollars and: big bore/stroker high compression kit, cam, port and polish, valve job, possibly nitrous, lighten it up as much as possible, lightened flywheel, lock-up clutch, etc..........
 
Reply
Old Jun 19, 2008 | 12:40 AM
  #4  
bigned1904's Avatar
Pro Rider
Joined: Jun 2007
Posts: 1,263
Likes: 0
From: san diego
Default make a raptor go faster

it will hit 90 n/p with like a 16 or 17 tooth. 120 i dont know im trying to find a gearing chart. i would think need to be a 20 tooth min. as far as mods to get going that fast not sure what kind of hp you would need. depends how long you got to get going. but it can be done no problem. the best raptor 700 builders are tim barker, rocket factory, kenz cycle and racer edge. they can make you as much hp as you want pretty much. kenz and rocket factory have no problem building you a 100+hp raptor if you got the $. and racers edge can get you 75-80hp for like 3k on a stock bore. tim barker just developed a new cnc machined p&p that has crazy good flow bench numbers but has not built a ton of raptors yeat but is work is top notch.
 
Reply
Old Jun 19, 2008 | 12:53 AM
  #5  
Mikeu12's Avatar
Thread Starter
|
Trailblazer
Joined: Jan 2008
Posts: 34
Likes: 0
Default make a raptor go faster

that sounds awesome but yeah i still want to trail ride and all so i dont wanna change the sprockets and **** if it takes me a while to go faster
 
Reply
Old Jun 19, 2008 | 12:56 AM
  #6  
bigned1904's Avatar
Pro Rider
Joined: Jun 2007
Posts: 1,263
Likes: 0
From: san diego
Default make a raptor go faster

you will never hit over 80 with stock sprokets.
 
Reply
Old Jun 19, 2008 | 12:59 AM
  #7  
Mikeu12's Avatar
Thread Starter
|
Trailblazer
Joined: Jan 2008
Posts: 34
Likes: 0
Default make a raptor go faster

yeah i know but ill need a new chain if i wanna change the sprockets rite?
 
Reply
Old Jun 19, 2008 | 01:03 AM
  #8  
bigned1904's Avatar
Pro Rider
Joined: Jun 2007
Posts: 1,263
Likes: 0
From: san diego
Default make a raptor go faster

i think if do if you go over 16. i know for a fact you can do 15t which people love for dirt. they say way less wheel spin but the power down low is still there.
 
Reply
Old Jun 21, 2008 | 01:51 AM
  #9  
1989250moto4's Avatar
Weekend Warrior
Joined: Jun 2008
Posts: 25
Likes: 0
Default make a raptor go faster

get a turbo for it and gear it how ever you want to, if that dont work put a 600cc street bike engine in it
 
Reply
Old Jun 22, 2008 | 11:18 AM
  #10  
gus700's Avatar
Trailblazer
Joined: Feb 2008
Posts: 62
Likes: 0
Default make a raptor go faster

There is an easy formula for gearing:

____<u>ENGINE RPM</u>____ x Rolling radius of rear tires x .0059
Over all reduction

Random Example: if you had

2:1 primary reduction
1.23:1 fifth gear
<u> 2.75:1 final drive </u>
6.765:1 overall

9000rpm/6.765 x 9.5"(approx. rolling radius of 20" tire) x .0059 = 74.56 mph

9000rpm/6.765 x 10.5(22" tire) x .0059 = 82.42mph
 
Reply

Thread Tools
Search this Thread

All times are GMT -5. The time now is 11:42 AM.