×
BigJimnyMeet (North) 2024 (12 Jan 2024)


BigJimnyMeet 2024

14th July 2024
Parkwood Nr. Leeds

Booking now open - Discount for additional vehicles

Click HERE for details

× A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.

4wd problems

More
30 Dec 2020 17:30 #231338 by jackonlyjack
Replied by jackonlyjack on topic Re:4wd problems
Just as Lambert says HD transfer mounts and the guard
You should have ask on here for a stick transfer box
I would have sold you one for a less than a 3rd of the fix cost
The following user(s) said Thank You: Lambert, Roseblade

Please Log in or Create an account to join the conversation.

  • Roseblade
  • Topic Author
  • Visitor
  • Visitor
    Public
30 Dec 2020 17:56 #231342 by Roseblade
Replied by Roseblade on topic Re:4wd problems
Thanks,
It sounds like you have similar usage so I will look at the steel brackets since they are load bearing I think that's a wise upgrade and I agree about the skid plate however I would still prefer alloy if I can find one.

Please Log in or Create an account to join the conversation.

  • Roseblade
  • Topic Author
  • Visitor
  • Visitor
    Public
30 Dec 2020 18:01 #231343 by Roseblade
Replied by Roseblade on topic Re:4wd problems
Thanks, I wish Id thought of that, Too late now, But at least I have a box ready to go, I need to keep mobile to work. Hence all the questions, I want to be ready with everything in place before I tackle the job, Need minimal time out of action.

Please Log in or Create an account to join the conversation.

More
30 Dec 2020 19:20 #231348 by jackonlyjack
Replied by jackonlyjack on topic Re:4wd problems
There used to be a company in Israel that did alloy protection
But i can't remember their name
Some stuff available from Devon4x4 at a big price tag
But it only says transmission guard i would contact them to be sure it's for transfer box
www.devon4x4.com/catalogsearch/result/in...q=Rival+suzuki+jimny
The following user(s) said Thank You: Roseblade

Please Log in or Create an account to join the conversation.

  • Lambert
  • Lambert's Avatar
  • Offline
  • Moderator
  • Moderator
    Registered
  • The quickest Jimny in Harrogate...(that I own)
More
30 Dec 2020 19:25 #231349 by Lambert
Replied by Lambert on topic Re:4wd problems
Was that Asfir? Or something like that. I think that was who did the one I had on my maverick.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
The following user(s) said Thank You: jackonlyjack, Roseblade

Please Log in or Create an account to join the conversation.

  • Lambert
  • Lambert's Avatar
  • Offline
  • Moderator
  • Moderator
    Registered
  • The quickest Jimny in Harrogate...(that I own)
More
30 Dec 2020 19:42 #231355 by Lambert
Replied by Lambert on topic Re:4wd problems

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
The following user(s) said Thank You: Roseblade

Please Log in or Create an account to join the conversation.

More
  • Roseblade
  • Topic Author
  • Visitor
  • Visitor
    Public
30 Dec 2020 23:08 #231359 by Roseblade
Replied by Roseblade on topic 4wd problems
Thanks guys, That's really helpful.

I have one final (I hope) question.

My stick shift T Box is off a Jimny, not a sami. so am I right to assume the prop shafts fit without alteration?
The only references I have seen to altering or swapping props around seem to refer to when sami boxes are used.
I just want to confirm what I think I know.

Cheers

Please Log in or Create an account to join the conversation.

  • Lambert
  • Lambert's Avatar
  • Offline
  • Moderator
  • Moderator
    Registered
  • The quickest Jimny in Harrogate...(that I own)
More
31 Dec 2020 04:17 #231361 by Lambert
Replied by Lambert on topic 4wd problems
That's correct. Jimny to Jimny is bolt on.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
The following user(s) said Thank You: Roseblade

Please Log in or Create an account to join the conversation.

More
31 Dec 2020 09:04 - 31 Dec 2020 09:06 #231364 by Busta
Replied by Busta on topic Re:4wd problems

Roger Fairclough wrote: For future reference.

The greater the difference between tyre wear front to back the greater the "fight" between the axles because the wheels are being driven at different speeds.


The difference in tyre wear is completely insignificant compared to the difference in distance each axle travels when you turn a corner. Even with brand new perfectly matched tyres you will get wind up because we don't travel in dead straight lines. Any concerns about even tyre wear are misplaced.
Last edit: 31 Dec 2020 09:06 by Busta.
The following user(s) said Thank You: Roseblade

Please Log in or Create an account to join the conversation.

More
31 Dec 2020 11:53 #231367 by Roger Fairclough
Replied by Roger Fairclough on topic Re:4wd problems
Lets assume worn tyres 700mm dia. on one axle and new tyres 705mm dia. on the other.
700 x 3.142 = 2199.4 mm
705 x 3.142 = 2215.11 mm
This is a difference of 15.71mm in one revolution.
At 30mph, which is 13.41 meters per second, a wheel will turn approx. 6 times.
This means that in every second the difference between front and back axles is 6 x 15.71mm which equals 94.26mm.
In other words if you have a half shaft 30mm in dia. then every minute that half shaft will be twisted through 360 degrees.
If you are on a track that allows easy spin out to alleviate this twist, then all well and good but the moment you drive back onto a grippy sealed surface you must drop back into 2 wheel drive.
I agree that turning a corner will make things worse but to ignore straight line variations will not be tolerated by the transmission. Land Rovers are notorious for snapping half shafts and every picture I have seen of the remnants indicates severe twisting prior to breaking.

Roger

Please Log in or Create an account to join the conversation.

More
31 Dec 2020 12:56 #231370 by Busta
Replied by Busta on topic Re:4wd problems
I can't fault your maths, but the point remains that turning induces a much bigger difference in axle speeds than tyre wear ever could. The simple fact is that if you use 4wd on high traction surfaces you WILL get wind up. On low traction surfaces then a difference of tyre size is of no consequence at all as the tyres will constantly be slipping anyway.
Every landrover since about 1980 has had a central differential, so the forces we are talking about simply will not exist (unless it is being driven with the diff locked). With a central differential you can run 4 completely different sized tyres with no mechnical stess on the drivetrain.
And of course a snapped driveshaft will always show signs of twisting. Twisting is the only means by which a driveshaft will snap. But there are multiple reasons that it could occur, and it's very unlikely that a variation in tyre size is one of them.

Please Log in or Create an account to join the conversation.

Time to create page: 0.185 seconds
Powered by Kunena Forum

I hope you enjoy using this forum. Please consider making a donation towards the upkeep of this forum website.

We use cookies to give you the best online experience. Please let us know if you agree to all of these cookies. Accepting the Cookies also accepts the Disclaimers for the website.