Klune-V w/LT230

Post by **lingyang wu** » Mon Sep 06, 2004 5:48 pm

G'day and hi all,
I know some guys here want a crawl box for Rover so badly and so do I. Since ashcrof has no longer made crawl box for Rovers,how hard will it be to put a Klune-V work w/lt230?What kinda probs will it be?
Or is there any other way to get a crawl box from the market for LT230 now?

Thanks.

Post by **stuee** » Mon Sep 06, 2004 6:41 pm

It would be tricky. You would have to make an adaptor from the gearbox to the klune V and then for the klune v to the transfer case. Then you've got to get the different lenght drive shafts installed and may have problems with the short rear shaft. Otherwise I personally don't know of any other crawl boxes.

Post by **GRIMACE** » Mon Sep 06, 2004 6:43 pm

Interesting thread

Post by **Bush65** » Mon Sep 06, 2004 9:28 pm

I think it will be a miracle if you can get a clune with splines to match the 10 spline output shaft in a rover gearbox. That means making custom adaptors.

And the transfer case has to be shifted back. This leads to clearance issues with the transmission tunnel and crossmember for seat mounts, and mods to gearbox mounts, handbrake mounts, transfer linkages, driveshaft etc.

If you are prepared for all that, go for it and good luck.

Post by **GRIMACE** » Tue Sep 07, 2004 7:31 am

Surely there is a better way :lol:

Post by **daddylonglegs** » Tue Sep 07, 2004 8:27 am

This subject of crawler boxes for LT230's has come up a few times before both here (check page 4 on this forum} and on Pirate.
I am getting tired of repeating the same thing. I have worked out a way of adapting a Borg Warner Quadratrac planetary reduction unit to the PTO aperture of an LT230 transfercase. This conversion is similar to Ashcrofts discontinued crawler but allows you to purchase a used (secondhand} Quadratrac and fit it via an adaptor plate, spud shaft etc.
I am currently making one kit in my spare time. The thing is that I personally do not have a machine shop or engineering equipment so I have to farm the work out to a friend of mine. If there were sufficient interest I think he could be persuaded to make a few kits, but based on the underwhelming response from previous threads on this topic I can't go to him and say that ,Look Arnold, worldwide there is a definate market for at least 2 units! He is a busy man and is not going to put aside other priorities to make 2.
Bill.

Post by **DiscoDino** » Wed Sep 08, 2004 1:26 am

Bill - I'll take 3 units (where does the quadratrac unit come from and what would be the final low ratio with the 3.32 LT230?).

I'm willing to ensure that each one pays 50% pre-production and 50% once final.

THIS IS SERIOUS - how many units are needed to get the economies of scale running?

Post by **lingyang wu** » Wed Sep 08, 2004 4:59 am

Now is 4,Bill.
I can't wait to buy one as well if it is reliable and get low enough ratio.

By the way,I am from Taiwan and I use my disco to race here.Check some of the photos of my races and activities in my website.

Thanks.

Post by **red90** » Wed Sep 08, 2004 5:33 am

As I understand it (Bill can correct me). This is the unit that is being talked about.

Borg Warner 1339 QuadraTrac Transfer Cases were on 1973 to 1979 Jeeps with full time 4WD. The low range unit is a bolt on affair with gearing of 2.57:1. so you'd have a choice of 2.57, 3.32 or 8.53:1 low range.

http://www.jpmagazine.com/techarticles/23658/

And Bill, If you are serious, there will be a reasonable amount of interest. A little more detail and a ROUGH though on cost would help to get the ball rolling.

Post by **daddylonglegs** » Wed Sep 08, 2004 8:17 am

Thanks red90, yes that is the gearbox that I use. I will see Arnold on the weekend and hopefully by then I can show him that there is a fair bit of interest and we can nut out costs. Meanwhile, there is someone named Tim on the LandRover Forum on Pirate that has an over/underdrive unit that he would produce if he got a minimum of 10 prepaid orders.I expect more information on it should surface in the next few days.

Bill.

Post by **quaddrive** » Wed Sep 08, 2004 8:13 pm

Hi Bill.
I too would be interested depending on price.
Cheers
Giles

Post by **wilsby** » Wed Sep 08, 2004 8:37 pm

Bill, count me in for one. If priced reasonably, make it two.

Post by **supanovarover** » Wed Sep 08, 2004 8:47 pm

ILL PAY UP TO 1800

Post by **DiscoDino** » Wed Sep 08, 2004 9:38 pm

we got EIGHT already on thi board - I guess we can get 8 more on P4x4 and 4 roaming around (with some advertising)...

That's 20 right there - I think a run of 50 won't do wrong, especially if the BULK of the components to be used are in the junk yard...

Is should be a simple adampter that should not cost over 500$ USD.

Post by **daddylonglegs** » Wed Sep 08, 2004 9:50 pm

I hope the outerlimits board don't mind. This is not an underhanded attempt at spamming. I said on a previous thread months ago that I would be happy to let anyone with a machine shop have the design free of charge if they thought they could make a go of it, but got no response.
If my friend decides he is not interested in making the kits, is there anyone else out there who is willing to take the project on ?
I may be pulling up roots and moving overseas in the very near future, so I cannot personally take it on.

Red90 has already done the Maths as to gear ratios but when the quadratrac planetary box is fitted to a 4 speed Rangey with 3.54:1 diffs the overall crawl ratio is around 127:1. On Nigels Hybrid Landy with 4.7:1 diffs and 4speed LT95 the crawl ratio is around 165:1. On a series 2A Landey 4speed with suffix B 2.88:1 transfer low range gears the crawl ratio is 127:1. On my series 2A landy with Warner T98 4 speed, suffix B 2.88:1 transfer gears, 3.54 :1 diffs, and 1.56 :1 portal gears the crawl ratio is 278:1. so you can see that the crawler unit makes for a very versatile transmission.

Bill.

Post by **HSV Rangie** » Wed Sep 08, 2004 9:58 pm

Bill,

No problems here, there is a lot of interest for this.

I would also be very interested in one of these.

this we need to get up and running.

Michael.

Post by **landy_man** » Wed Sep 08, 2004 10:35 pm

yes indeed...
surely we can find someone that has the appropriate equipment and get it going...
what is the availability of the quadratrac units like

Post by **hybridLR** » Wed Sep 08, 2004 10:57 pm

Hi All
Good to see the interest in the crawler box.

The Quadratrac unit is robust and not subject to failure on the Jeep.
Therefore they are readily available since they are not sought after as spares.

However, when I was sourcing for the Hybrid I phoned several Jeep parts specialists and they would not sell just the Quadratrac planetery unit. They wanted to sell the whole transfer case at significant cost.

I eventually sourced from a guy who wrecked jeeps for $250.

I suggest you start marking enquiries about price and availability from your local areas.

Good luck.

Regards

Nigel

Post by **red90** » Thu Sep 09, 2004 12:39 am

Actually, my math is wrong. because the high range on the LT230 is NOT 1:1, the low range options for a 1.41:1 LT230 are:

3.32:1
3.62:1 (2.57*1.41)
8.53:1 (2.57*3.32)

Here is an example of the gearing choices for a military LT77

Gear / Ratio / Diff from stock 1st low
1LL 120 257%
2LL 76 162%
1HL 52 111%
1LH 47 100% Stock 1st low
3LL 46 97%
2HL 33 70%
4LL 30 64%
2LH 30 63% Stock 2nd low

So 3 gears lower than stock 1st and 3 between 1st and 2nd (although only one that is really different.

Post by **GURU** » Thu Sep 09, 2004 12:45 am

daddylonglegs wrote:I said on a previous thread months ago that I would be happy to let anyone with a machine shop have the design free of charge if they thought they could make a go of it, but got no response.

YOU HAVE PM

Post by **byrdseye** » Fri Sep 10, 2004 1:35 pm

I too would be interested in one of these units..........count me in!

Bruce

Post by **HSV Rangie** » Fri Sep 10, 2004 1:44 pm

this wil be a goer maybe,

now geting the quadratrac wil be interesting.

Michael.

Post by **GRIMACE** » Fri Sep 10, 2004 8:01 pm

its not that hard they are afew around

some cost more than others but there is plenty :lol:

Post by **ISUZUROVER** » Mon Sep 13, 2004 6:41 pm

I'm interested too Bill, let me know when you have a price for the adaptor. Will the kit also include a series handbrake adaptor for the LT230???

Post by **HSV Rangie** » Mon Sep 13, 2004 7:57 pm

Yes they are around.

I have one. :lol:

now just need the adaptor.

Michael.

Post by **daddylonglegs** » Mon Sep 13, 2004 8:34 pm

Its all a bit up in the air at the moment guys. My mate is not real keen on making the adaptors because he doesn't think it would be worth his time.
A couple of other forum members have expressed interest in taking the project on and I would be happy to offer any advice to them if they require it, so we'll see what pans out.
Bill.

Post by **RUFF** » Mon Sep 13, 2004 9:14 pm

Bill how strong do you think this set up could be. Do you think it would cope in a Competition Buggy weighing aprox 1350kg with a 3.9disco motor and Zf running 38" tyres and lockers and driven with everything bit of hp it has?

Post by **landy_man** » Mon Sep 13, 2004 9:23 pm

nigel runs one in his hybrid with a 4.6 and 38's IIRC...
and if he drives that one the same way he drove the S3 it should last just fine

Post by **daddylonglegs** » Mon Sep 13, 2004 9:34 pm

Ruff, this setup would be easily the strongest component of the whole vehicle and when fitted to a Rover is under much less stress than say their original application of a heavy Jeep Wagoneer with 360--401 cu inch engine. The reduction unit in my LandRover had done about 250,000 miles in a Jeep before I got it and it was still like new. When the unit is in high range, which on a daily driver is in realityabout 95% of the time, all the planetary gears are locked together and merely rotate as a flywheel, thus no wear.
Bill.

Post by **HSV Rangie** » Mon Sep 13, 2004 10:23 pm

Jeep had them behind 360 ci engines heaps ot torque.

From what I have found out they should give no troble.

Only issues are spline wear.

Michael.

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