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View Full Version : Sprocket set up?



motox92
02-18-2009, 04:30 PM
Im thinking about running a 14 in the front and like a 37 in rear?? Any body know how this will work...Im looking for a little more speed, i have the sparks advanced timing key on the way...want to do my sprockets now.

billyboy93
02-18-2009, 04:36 PM
http://home.earthlink.net/~gellett/400ex.htmspeed/gearin calculator (http://home.earthlink.net/~gellett/400ex.htm)

motox92
02-18-2009, 04:40 PM
Thanks for that! It says if i run a 15 in front a 30 in rear with 22in tries I will top out at 95>!>! does that seem right?

billyboy93
02-18-2009, 04:41 PM
yea but it would take a longggg time 2 get there lol.

motox92
02-18-2009, 04:45 PM
How will bottom end be? loose power at all

billyboy93
02-18-2009, 04:47 PM
if ur talking about the gearing 4 the 95 mph im thinking u would have no low end but idkk.

motox92
02-18-2009, 05:12 PM
no where to go 60 around here..let alone 95..just want to know its fast

billyboy93
02-18-2009, 05:19 PM
haha i always wide open

motox92
02-18-2009, 05:32 PM
When ever I can I do,,,in the trails i dont think your going to go more than 40 tops unless its a loooong open area

BlasterEaten250
02-18-2009, 05:35 PM
You would lose like all your power if you did that

motox92
02-18-2009, 05:55 PM
What sizes should I run??

hypersnyper6947
02-18-2009, 11:27 PM
Originally posted by motox92
How will bottom end be? loose power at all

U will have no low end power what so ever.

What size rear tires are you running now and what type of riding do you ride, terrain, style etc....

02-19-2009, 02:49 AM
let me get this straight... with a 13-39 on 20's.. I would have more top and less low than if I downsized to 18's?

motox92
02-19-2009, 04:08 AM
I have 22 in tires in rear, im almost always in trails never go to a track...sometimes mud mainly dirt.

hypersnyper6947
02-19-2009, 11:03 AM
What kinda of trails, long and straight, tight and with lots of turns, ???

With your current gears do you have to constantly switch between gears or can you put it in any one gear and that works for you through all the trails.

example: im running 14/36 and i constantly have to switch between 2nd and 3rd so im going to drop the front sprocket 1 tooth (which is like adding 3 to the rear) so that i can stay in 3rd.

02-19-2009, 01:04 PM
Originally posted by SuicideMFNdoors
let me get this straight... with a 13-39 on 20's.. I would have more top and less low than if I downsized to 18's?

According to the calculator.. If I run 13-36 with 18's.. it'll be equivalent to my 13-39 gearing on 20's.

honda400ex2003
02-19-2009, 08:46 PM
yup. It should work. The smaller the front and the larger the rear the more low end you have but the slower it goes. If you do the opposite like a 16,36 it will be really fast but no guts to get there. with a 14, 39 it takes off but doesn't go very fast. 95 WOULD BESICK ON A 400!!!! :devil: too bad they don't make a 30 i don't think. :( all well, steve