I've found the secrete of a 400EX.....Wanna go fast? look here
#1
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I won't lie. My bike is not stock. Here's a list of my mods.
40mm lectron carb
ported and polished
bored to 416
11.1 JE piston
WB rev Kit
No air box lid
K&N Filter
Lrd exhuast system
xr400 cam
After all that i kept running stock gearing 15/38
A guy told me that i need to gear high b/c 4-strokes love to be in a bind. I thought he was full of it but i tried and it worked. I won the past weekend for the first time. I think it's all in the gearing. My gearing is 16/36. And it doesn't even lug the first little bit on bottom end. Just thought i would share. Everyone let me know what you think. Everyone try it.
40mm lectron carb
ported and polished
bored to 416
11.1 JE piston
WB rev Kit
No air box lid
K&N Filter
Lrd exhuast system
xr400 cam
After all that i kept running stock gearing 15/38
A guy told me that i need to gear high b/c 4-strokes love to be in a bind. I thought he was full of it but i tried and it worked. I won the past weekend for the first time. I think it's all in the gearing. My gearing is 16/36. And it doesn't even lug the first little bit on bottom end. Just thought i would share. Everyone let me know what you think. Everyone try it.
#2
#3
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Nope, gearing was hard for me to remember at first but here's my 2 cents.
Front Counter Sprocket:
Less teeth = slower
More teeth = faster
Rear Sprocket:
Less teeth = faster
More teeth = slower
Note: (close but not %100)
for every tooth in the front = 2 in the rear. So if your stock is a 12/40 and you wanted to make a 6 teeth gear change you would change to a 14/38 or 13/36.
Hope this helps alittle. Later.
Front Counter Sprocket:
Less teeth = slower
More teeth = faster
Rear Sprocket:
Less teeth = faster
More teeth = slower
Note: (close but not %100)
for every tooth in the front = 2 in the rear. So if your stock is a 12/40 and you wanted to make a 6 teeth gear change you would change to a 14/38 or 13/36.
Hope this helps alittle. Later.
#5
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The best way to figure it out is to find the final drive ratio.
stock 15/38 = 2.53 that means the front sprocket turns 2.53 times for every revolution of the rear sprocket, and with equal tire sizes gives you the final drive ratio.
I switched to a 14 front 2 years ago to get more pull in second and I never use first, so if you went the other way a little it should make first more usable, and give you more top end for those who want it.
14/38 = 2.71 makes first like granny low but second is great.
16/38 = 2.375
16/36 = 2.25 The smaller the number the higher the top speed.
15/33 = 2.26 then you just need to buy one sprocket for the highway gear.
this is interesting enough to try my chain and sprockets are due for replacement anyway.
stock 15/38 = 2.53 that means the front sprocket turns 2.53 times for every revolution of the rear sprocket, and with equal tire sizes gives you the final drive ratio.
I switched to a 14 front 2 years ago to get more pull in second and I never use first, so if you went the other way a little it should make first more usable, and give you more top end for those who want it.
14/38 = 2.71 makes first like granny low but second is great.
16/38 = 2.375
16/36 = 2.25 The smaller the number the higher the top speed.
15/33 = 2.26 then you just need to buy one sprocket for the highway gear.
this is interesting enough to try my chain and sprockets are due for replacement anyway.
#7
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