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Old 04-30-2010, 02:29 PM   #1
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Default Differential Oil Questions

Rather then constantly asking what setups are you using perhaps some one could take the time to explain how to determine what viscosity I should use.

Example: One local racer told me he is using 8/10/4 in his Kyosho ST-RR. I am using a Z01T to be converted to electric.

How do you know to go up or down in the front?
How do you know to go up or down in the center?
How do you know to go up or down in the rear?

I am having a hard time finding 8000wt other then the incredibley over priced XRAY at $17 via amain hobbies, where as AE is $4 and Mugen is around $6. Can you mix oils to get the wt you need? If so how?

Thanks in advance!
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Old 04-30-2010, 02:43 PM   #2
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how to mix http://www.gesilicones.com/gesilwiza...ng/fluid2.html
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Old 04-30-2010, 03:18 PM   #3
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Quote:
Originally Posted by SNIPR View Post
Rather then constantly asking what setups are you using perhaps some one could take the time to explain how to determine what viscosity I should use.

Example: One local racer told me he is using 8/10/4 in his Kyosho ST-RR. I am using a Z01T to be converted to electric.

How do you know to go up or down in the front?
How do you know to go up or down in the center?
How do you know to go up or down in the rear?

I am having a hard time finding 8000wt other then the incredibley over priced XRAY at $17 via amain hobbies, where as AE is $4 and Mugen is around $6. Can you mix oils to get the wt you need? If so how?

Thanks in advance!
First off ae oils work very well so stick with that 1 brand only cause oils between different companies are not the same.

So what u want to do is start with a close setup for ur brand, so go checkout what some people have in there already as a starting point. I will use 7/10/3 as an example.

What u need to know about the front diff is simple, if u feel that ur car is not turning thru out the corner when ur on the gas and has a bad push making u tap the break constantly thru the corner to get it back in the line going from 7k to 9k will make it better because it will slow the inner wheel down.

Center diff is a bit deeper to figure out and even I chose not to mess with it but from what iv gathered It basically balances power to front and back and if u feel that the rear end is over powering the front end and is making the car over corner then u have to lower from 10k to 8k. I'm not the beat with center diff changes so don't bash me if I'm a lil off on that.

Rear diff is typically the one I change based on traction. If u feel the car is loose in the rear coming thrue the middle and exit of corners and is hard to keep straight because of lack of traction then u should go from 3k to 5k. If it feels like it has to much traction then u should go to 1. I also found out that going to heavy with make the car feel loose also so make sure u don't go from 3k to 7k cause it might feel the same because it starts locking the rear and making is feel like a 2wd.

Keeping the right balance between all is important because u could feel like the front is pushing when really the rear diff is to heavy making the front push so something like 10 10 3 should have been 7 10 5 cause it's better balanced now.

When I need a diff oil weight like 9k I take 7k and 10k and mix it in a new bottle half n half. It's not acurate but I feel like is works good.

I try to keep my diffs on my truck 7/10/3 average traction, 9/10/5 dusty dry,

I usually run 7/10/5 for almost everything because it works in corners really well and is really easy to drive with because the fronts not to aggressive the back is stable and the center diff keeps everything even.

I hope this help I no a few things mite b off but this is from what I feel not what I read.
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Old 04-30-2010, 10:00 PM   #4
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Great question Snipr (one I was about to as as I have ordered a full range of oils from amain)

And thanks for the answers Matt, just the info I was after.
I have saved this into my "Chassis tuning" folder in my laptop.
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Old 05-01-2010, 10:54 AM   #5
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Yes that was VERY helpful information - Thank You!
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Originally Posted by boxhead View Post
Great question Snipr (one I was about to as as I have ordered a full range of oils from amain)

And thanks for the answers Matt, just the info I was after.
I have saved this into my "Chassis tuning" folder in my laptop.
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Old 05-10-2010, 12:40 PM   #6
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Lightbulb Very good setup Z01T

Hello,
my son drives z01t too.
Last week we tested a new setup on a dusty and dry track:
front 10000
middle 10000
back 2000

The Z01T drives like a train

A mix calculator and a wt to cps calculator can you use at the homepage of my son: svenfroemmer.de
in the menu "tools".

sorry for my bad english

but i hope it helps
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Old 05-10-2010, 12:52 PM   #7
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heres the Hudy Off-road setup guide. the examples are on an xray but the principals will work for any vehicle. very good reading material: http://www.google.com/url?sa=t&sourc...g6X0pb_XPPKy0Q
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