Gear ratio change

[Agile1]

What lower gear ratio would you like for the Grenadier and why?

 

[Zimm]

Transfer case 4-0 gears. The road going manners are fine, this isn’t a high volume wheeler so 37’s and up aren’t a buyer issue. Lower Diff gears that have a significant low range impact will just slop up what’s fine as is on road.

The transmission permits a full range of gears in the auto, so a lower 3-4 t case ratio would permit more crawl control without much penalty, in low.

 

[Dokatd]

Transfer case 4-0 gears. The road going manners are fine, this isn’t a high volume wheeler so 37’s and up aren’t a buyer issue. Lower Diff gears that have a significant low range impact will just slop up what’s fine as is on road.

The transmission permits a full range of gears in the auto, so a lower 3-4 t case ratio would permit more crawl control without much penalty, in low.

I would agree. Some sort of selectable under drive would be best but that's a bigger job. Ashcroft crawler box is one of the most coveted Rover parts. I loved the crawler on my D90.

 

[Zimm]

I would agree. Some sort of selectable under drive would be best but that's a bigger job. Ashcroft crawler box is one of the most coveted Rover parts. I loved the crawler on my D90.

I use a marlin crawler 4.7 toybox in the 60. I think they quit making those. I wonder how the computers in this would even deal with something like that. Would it know? Would it toss a hissy fit?

 

[ADVAW8S]

What lower gear ratio would you like for the Grenadier and why?
[/QUOTE

If you are who I think you are, aren't you working on a 4:1 ratio?

 

[Commodore]

Can you do a 4.70? I know that ratio is available in a Dana 44 which has about the same ring gear size. That would be about the perfect jump from the stock 4.10 when we are running a common “35 inch” tire. I don’t see many people wanting to stuff 37” tires on a grenadier. Besides a 37” tire would take some modifications where a 35 fits stock.

 

[Agile1]

I use a marlin crawler 4.7 toybox in the 60. I think they quit making those. I wonder how the computers in this would even deal with something like that. Would it know? Would it toss a hissy fit?

Not sure what it would do in low range, we know it throws a hissy fit in high range with gear modifications.

 

[Agile1]

Can you do a 4.70? I know that ratio is available in a Dana 44 which has about the same ring gear size. That would be about the perfect jump from the stock 4.10 when we are running a common “35 inch” tire. I don’t see many people wanting to stuff 37” tires on a grenadier. Besides a 37” tire would take some modifications where a 35 fits stock.

Interesting, I assumed 4.56 for 35" and 4.86 for 37", something to consider.

 

[Commodore]

Interesting, I assumed 4.56 for 35" and 4.86 for 37", something to consider.

AI did the math and came back with 4.69 as being the same as 4.10 on factory tires. I know my Bronco Sasquatch on 35’s came with 4.70 and the next model down was on 4.56… not that this is the same as a Bronco.

I’m guessing you did the math already. Simply put I would like to have the same effective gearing as factory when running 255/85r17 (35”) tires.