Fasted 250 Big Red needs tall gearing.

[Flyingw]

I have taken the gear set out of a 300 diff and stuck it in an ES case but that's not really gearing up so to speak. I've put SX gears in ES cases too.

[Mickey Dunlap]

I have taken the gear set out of a 300 diff and stuck it in an ES case but that's not really gearing up so to speak. I've put SX gears in ES cases too.

Why didn't it gear it up. I looked for how many teeth each had and I couldn't fine that on Bike Bandit. So the SX gears will go into the RS cases, so it is a taller gear box on every gear?

[Chopsaw]

I have a 85 sx engine in a 85 es with the es rear end . Pulls good thru all the gears , plenty of top end for me .

[Flyingw]

Here's the two gears side by side. Remember, the TRX and ES use the same ring gear and the SX stands alone one tooth smaller
..

[Mickey Dunlap]

Does anyone have a plane and simple answer to what parts, engine or what ever I need to gear this ES needs.

[fabiodriven]

You're baffling everyone man. Convey yourself in a manner in which others can understand.

[jeswinehart]

Well for what it's worth I put a 85
Sx differential in my 85 es for the sole purpose of more top speed.
Not a big jump gained but defiantly noticeable.

John

[fabiodriven]

"Fasted 250 Big Red needs tall gearing."

^^^That^^^ doesn't make sense first of all.

I know what "tall gearing" means. It means you want to swap out your 3.73's for 2.73's in your Mustang. You want more top speed, less pulling power. You want taller gears, or higher gears, or lower numerically. Those all mean the same thing. If that's what you want, the SX differential will give you taller gears by (what sounds like) one tooth. The ring gear is smaller in diameter and has one tooth less, so a little more top speed. I believe the transmission gears are different between the SX and ES as well. I'm sure these boys can straighten you out on that as well.

So the SX gears will go into the RS cases, so it is a taller gear box on every gear?

When you write things like this you are going to lose everyone. We don't all speak Mickinese. We speak mostly English and there are other guys that speak other languages, but you and Jesus are the only two speaking your language. You didn't even get the nomenclature of the bike right you're trying to ask for help on. It's an "ES". These guys are all dying to help you, god bless 'em, and you're getting frustrated at them because nobody can tell what the hell it is you're saying. Not their fault. Try it like this;

Hello! I have an 85 Honda Big Red 250ES that I would like the tallest gearing possible on. What are the differences in both the transmission ratios and the final drive ratios between the ES and the SX?

Or some variation of that, depending on what it is you are trying to accomplish. I would venture to guess between the two transmissions and two rear ends there are a couple of different ratios you could potentially end up with. If that example happens to be the very question you intended to ask, by all means feel free to copy it and paste it.

[Flyingw]

Mickey, the simple answer is to gear up an ES, you need an SX transmission and SX differential. Couple those two parts with 25" tires and it will go faster but loose some bottom end torque but probably not much. That's the best answer I can give.

[Mickey Dunlap]

Mickey, the simple answer is to gear up an ES, you need an SX transmission and SX differential. Couple those two parts with 25" tires and it will go faster but loose some bottom end torque but probably not much. That's the best answer I can give.

Thanks but all I need is 450 Fourman gears off the crank and behind the clutch for a 18% gain.

[tripledog]

^^^ If you already have the answer, why ask the question?

[Mickey Dunlap]

^^^ If you already have the answer, why ask the question?

Because I got the answer to my question on Face Book where I was understood without being talked down to.

[big specht]

What are you building? Or what is it going to be for? I would think you could put ride the suspension as it is already ? Not trying to get into the pissing contest just woundering

[fabiodriven]

Because I got the answer to my question on Face Book where I was understood without being talked down to.

Yep, they certainly speak your language there!

[Mickey Dunlap]

What are you building? Or what is it going to be for? I would think you could put ride the suspension as it is already ? Not trying to get into the pissing contest just woundering

It's for my sleeper Big Bed project. I know with as big of a motor as I'm going with it's going to hit the re-limiter quick, so I need to use the torque and gear it up. I want it to blow any 4 stroke away that I run with out trail riding.