1-Way vs 1.5-Way Rear Differentials
#271
Evolved Member
it is a shame you guys did not get AYC diffs in the US...
#273
Evolved Member
Having in mind that you could program that unit to do whatever you want with it, I can't believe that any mechanical one would perform better.
The only thing I could think of is reliability of the unit and how much power it can handle as a reason for one to go backwards
#274
EvoM Guru
I remember at the time somebody more clever than me explaining its due to flex around the pinion bearing or something in the AYC diffs which is a weak point then they spread apart and shatter the casing. making them a grenade once u hit a certain level of power/ grip.
#275
Evolved Member
yep, they do not like a lot of power and wide tires.. but damn the thing turns in like nothing else and the ease of yaw adjustment, mid corner, is something else.. esp on slippery surfaces..
#276
Evolved Member
I am also surprised by this, and I have heard about switching to the mechanical one as well. I remember there were two different versions of the AYC, with latest one being called Super AYC for much faster activation ability.
Having in mind that you could program that unit to do whatever you want with it, I can't believe that any mechanical one would perform better.
The only thing I could think of is reliability of the unit and how much power it can handle as a reason for one to go backwards
Having in mind that you could program that unit to do whatever you want with it, I can't believe that any mechanical one would perform better.
The only thing I could think of is reliability of the unit and how much power it can handle as a reason for one to go backwards
#277
It's a reliability thing, but also consistency. Yes there's things AYC can do that a mechanical can't, but the grip is still the grip and you can play with how you want the car to behave through setup. I'm actually really curious to see how the 1-ways going to feel compared to the 1.5s I've been running for the last 15 (!) years. I was the first cusco type RS 1.5 rear that Jon had, building his HD side cover for it.
The following users liked this post:
Name User (Jun 7, 2024)
#278
EvoM Guru
iTrader: (1)
There are many factors when it comes to differential tuning, it's not only 1.0way versus 1.5way.
There is initial preload, belleville (cone washer) stacking and thickness, plate stacking, ramp angles and oil slipperiness.
Getting this just right requires a lot of time, effort and data.
For example - 1.5way doesn't have any effect when braking because you're driving the diff the wrong way. the 0.5way only works when you're decelerating without any brake pressure. I've got wheel speed data to show it.
There is initial preload, belleville (cone washer) stacking and thickness, plate stacking, ramp angles and oil slipperiness.
Getting this just right requires a lot of time, effort and data.
For example - 1.5way doesn't have any effect when braking because you're driving the diff the wrong way. the 0.5way only works when you're decelerating without any brake pressure. I've got wheel speed data to show it.
The following users liked this post:
black E (Jun 5, 2024)
Thread
Thread Starter
Forum
Replies
Last Post
ProPilot04
Evo Engine / Turbo / Drivetrain
7
May 31, 2019 11:30 AM
suby2evo
Evo Engine / Turbo / Drivetrain
4
Oct 19, 2017 07:54 PM
QwikEVO
Evo Engine / Turbo / Drivetrain
12
Sep 22, 2007 04:38 PM