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Re:Jimny off road capability - a critique

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30 Mar 2020 08:02 - 30 Mar 2020 08:02 #220458 by Busta
It's only a 4% difference in tyre size Lambert, so unlikely to cause any significant differences.

One downside of the Jimny has always been the half-way low range. It isn't as low as many 4x4s, essentially only offering one gear lower than 1st high. By comparison, a Defender gains 3 extra gears below 1st high. I believe this is deliberate, to avoid having to beef up the drivetrain for high torque loads. Sticking a bigger reduction gear in the transfer box will fix that and improve crawling and engine braking.

My favourite thing by far about a Jimny is it's size, weight and manoeuvrability. In places where other trucks have to stick rigidly to the path of others, a Jimny can pick lines to the left and right, taking advantage of different routes over or around obstacles that others simply can't.
Last edit: 30 Mar 2020 08:02 by Busta.

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30 Mar 2020 08:32 #220459 by crash486

Busta wrote: It's only a 4% difference in tyre size Lambert, so unlikely to cause any significant differences.

One downside of the Jimny has always been the half-way low range. It isn't as low as many 4x4s, essentially only offering one gear lower than 1st high. By comparison, a Defender gains 3 extra gears below 1st high. I believe this is deliberate, to avoid having to beef up the drivetrain for high torque loads. Sticking a bigger reduction gear in the transfer box will fix that and improve crawling and engine braking.

My favourite thing by far about a Jimny is it's size, weight and manoeuvrability. In places where other trucks have to stick rigidly to the path of others, a Jimny can pick lines to the left and right, taking advantage of different routes over or around obstacles that others simply can't.

Can understand your comments about torque. Under the Jim today and a little shocked by the tiny size of the rear driveshaft after the TC connection.

crash486

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30 Mar 2020 09:05 #220461 by Lambert

Busta wrote: It's only a 4% difference in tyre size Lambert, so unlikely to cause any significant differences.

One downside of the Jimny has always been the half-way low range. It isn't as low as many 4x4s, essentially only offering one gear lower than 1st high. By comparison, a Defender gains 3 extra gears below 1st high. I believe this is deliberate, to avoid having to beef up the drivetrain for high torque loads. Sticking a bigger reduction gear in the transfer box will fix that and improve crawling and engine braking.

My favourite thing by far about a Jimny is it's size, weight and manoeuvrability. In places where other trucks have to stick rigidly to the path of others, a Jimny can pick lines to the left and right, taking advantage of different routes over or around obstacles that others simply can't.


It is I'm sure not much but I have honestly never felt short of crawl speed in either of the manual ones. Obviously they can't do the same creepy creep that the automatic ones can but I would not expect them to. But for manoeuvres of trailers or crawling around sheep quietly or rock climbing on the lanes in the dales I have never felt I was going too quickly to be in full control.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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30 Mar 2020 10:32 #220464 by 300bhpton

Lambert wrote:

Busta wrote: It's only a 4% difference in tyre size Lambert, so unlikely to cause any significant differences.

One downside of the Jimny has always been the half-way low range. It isn't as low as many 4x4s, essentially only offering one gear lower than 1st high. By comparison, a Defender gains 3 extra gears below 1st high. I believe this is deliberate, to avoid having to beef up the drivetrain for high torque loads. Sticking a bigger reduction gear in the transfer box will fix that and improve crawling and engine braking.

My favourite thing by far about a Jimny is it's size, weight and manoeuvrability. In places where other trucks have to stick rigidly to the path of others, a Jimny can pick lines to the left and right, taking advantage of different routes over or around obstacles that others simply can't.


It is I'm sure not much but I have honestly never felt short of crawl speed in either of the manual ones. Obviously they can't do the same creepy creep that the automatic ones can but I would not expect them to. But for manoeuvres of trailers or crawling around sheep quietly or rock climbing on the lanes in the dales I have never felt I was going too quickly to be in full control.


I don’t have any off road experience with the 3rd Gen. However I’d struggle to believe the crawl speed is really any different to the 4th Gen.

Laning and moving trailers is in my experience quite a bit faster than some technical off road terrain can be. And I’m not saying the Jimny can’t do it. But I have stalled a few times. Without the TCS you’d have just stopped and been crossed axled. But with it it will get itself through the obstacle. However if you don’t give it enough throttle it can stall itself. Or you end up going too quickly.

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30 Mar 2020 12:33 #220469 by Busta
Yes I agree. I haven't looked at the ratios but yes I'm fairly sure, as with most aspects of the gen4, that it is essentially the same as the gen3. So at idle in 1st low the car is doing about 2 mph. That's great if you are on easy terrain where you don't need any power. But as soon as you need a few revs to get over an obstacle the car is going 6-7mph and things are happening quite quickly! Or you are slipping the clutch, making it hard to maintain smooth progress. Same goes for engine braking. There is very little until you are doing over 5mph which is too fast for a technical descent. That's my experience with a gen3 anyway,

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30 Mar 2020 14:45 #220472 by Lambert
Have you tried adjusting your throttle cable so that the pedal is less of an on off switch? It is possible to get some quite good finesse if you do.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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