Gear Vendor/Gear splitter

BarneyS wrote:
More gears would not necessarily help with slowing the rig down in place of an exhaust brake. It would in a gas rig but not in a diesel.
Going up it would probably help but not coming back down.
Barney

Really?!?!?!

& on what do you base that comment from?
How many years have you been driving Diesels?

Big Rigs?

You ever notice on mountains grades going down hills there are always signs reminding the Big Rigs to use lower gears.

I wonder why that is?

They both have their place I'm sure..

But my main experience is from big rigs with everything from 9 speeds to 13 speeds & with both Engine Brakes & exhaust brakes as well as big rigs with no aux brakes at all.

& in those cases, you basically slow it down & let the trans do most of the work.

That being said, I've never driven a pick up truck with a EB.

More gears would not necessarily help with slowing the rig down in place of an exhaust brake. It would in a gas rig but not in a diesel.
Going up it would probably help but not coming back down.
Barney

Cummins12V98 wrote:
You will NEVER make up the cost in fuel savings.

For me it would be more about control than MPG's.
Going up & down grades would allow you to stay better in your power band.

ScottG wrote:
Problem with them is they don't like lots of torque run through them backwards. So it you have an exhaust brake you shouldn't use them.

Interesting thought?

But I'm thinking with 10 gears an exhaust brake may not be as needed being you have more gears to play with vs that gap in between where the EB comes in so helpful.

But I'm assuming the EB would be less expensive?

Grit dog wrote:
I could think of better ways to spend 3 grand on the truck, but they're kinda cool if you like driving a semi!

Well I am a class A truck driver, yet I don't drive big rigs very often.
Yet my truck totally reminds me of a big rig.

ScottG wrote:
Problem with them is they don't like lots of torque run through them backwards. So it you have an exhaust brake you shouldn't use them.

2x

You will NEVER make up the cost in fuel savings.

I could think of better ways to spend 3 grand on the truck, but they're kinda cool if you like driving a semi!

I have a Mitchell gear splitter but have yet to put it in my old Dodge. It is a modern Brownie Box basically being fully synchronized and made of aluminum. This particular one is 6% under and 18% Over.

Can't wait to have 10spds forward and 2 in reverse!

Having a old Cummins I was seriously considering a Fuller RTOO6610 but they are super hard to find and pretty expensive even when used with hundreds of thousands of miles on them.

With the Mitchell I will use the stock transmission which is easy to rebuild at home if needed some day.

I had one installed on a 1998 coach with a 460 and a 3-speed transmission. I really liked having 6 speeds and especially being able to run in 2nd/over up hills; plus I could cruise at a faster speed and lower rpm's on flat ground. I sold the coach a couple of years later so I don't know how well they hold up over time. To me, it was worth the money. I think it was about $3000 installed, but that was about 15 years ago.