price for maxi drive 30%reduction gear set for an LT230

[tony cordell]

Anyone have the current price?
TIA

[GRIMACE]

i think it may be 1600 supply only, dont have the actual catalogue on me at the moment.
I to am looking at purchasing these reduction gears.

Anyone who can tell me how hard it is to install them

[tony cordell]

http://www.pirate4x4.com/forum/showthread.php?t=213796&highlight=range+gear+install
They aren't answering thier phones at the moment.
What time is it locally there at the moment?

[GRIMACE]

11:33am but its a public holiday

[tony cordell]

thanks
I'll call Tuesday

[Britswed]

Part#LT230RC

$1669.80 doesnt include intermediate gear


Newq 4wd Montly has great story on Neil Redpaths Ibex sure he has a copy on the way

Cheers Mal

[tony cordell]

does that inclue the machining of your own intermediate gear?

[GRIMACE]

MD prices are supply only

[modman]

i think "200tdi" john put those gears in himself.
see if he speaks up??
he's also on the lrocv forum.
david

[tony cordell]

lrocv?
do you have a url?

[DaveS3]

http://forum.lrocv.com.au/login.asp?target=default.asp

[disco200tdi]

I paid $1670 for the reduction gears about 2 years ago. For the intermediate gear it is changeover if yours is in good condition otherwise you have to supply/pay for one. In my case I changed from 1.2 to 1.4 hight range gears so I bought a new gear.

I had Anthony at British 4wd Imports sort out the transfer case as it had other issues and I ended up spending about $4k in parts. That included all new gears, bearings, front output shaft, drive flanges, centre diff cross shafts (they were ****ed). I also had the new input gear cross drilled to stop future wear.

I think when you open up your case you will find lots bit that have wear and should be replaced.

[tony cordell]

and how have they performed?
are you happy with the reduction?
what size tyres are you running?

sorry for all the questions.

[disco200tdi]

I only run 7.50 x 16 tyres (32") and the crawler gears have given me back most of the engine braking lost.
With bigger tyres and a tdi you might not find them not low enough, but I like going sloww down hills. All the stuff I drive is mud or slick clay.
For climbing I now find 3 or 4 low is the go, otherwise you are going to slow.
I'm happy with them as they do all I want. (Great for backing the trailer up the driveway)

PS
They are straight cut so whine alot when in low range, but you can't hear them in high range.

[tony cordell]

MM
I run 33's as standard and 35's offroad
So you may well be right and these don't go low enough for my requirements.
I'm against 4.11 and 4.75's due to the smaller pinion
I'm waiting n a UK supplier who may well be creating some gears to get the ratio lower than 30%.

Needless to say downhills are exciting at the moment

[uninformed]

MM
I run 33's as standard and 35's offroad
So you may well be right and these don't go low enough for my requirements.
I'm against 4.11 and 4.75's due to the smaller pinion
I'm waiting n a UK supplier who may well be creating some gears to get the ratio lower than 30%.

Needless to say downhills are exciting at the moment

Tony the 4.1 and 4.75 from great basin rover are made from better material and the front set is reverse cut, even though the lower gearing you go with spiral bevel the weaker it gets, this should help. Maxi drive should be doing a 40% reduction in the near future?. As for ratio's the standard defender has a low of 43-1 Maxi drive 30% is 56-1. As a comparison the 1 ton and foward controls IIA and IIb had a low of 55-1 and ran 900-16's standard (35 inch) the 101 had a low of 75-1 with 900-16's and the 6x6 perente has a 66-1 low range on 7.50-16's but this is intended to carry very heavey loads. With 4.1's and a maxi 30% (this is what i'll be geting this year, the 4.1's should be in by july.)you would end up with 65-1, much lower than this imo is to low for All ROUND 4x4 it will lock up in a slippery/muddy descent, but playing with r+p's and the maxi drive gears should give you some options. just my five pence worth

cheers, Serg

[tony cordell]

Thanks for that.
I am against changing the R/P's as I have only recently paid for these to be built up.
3.54's are readily available abywhere should you break one.
I'm waiting on some other developments in the UK re the low ratio gear sets.

[DaveS3]

When something happens over there...

Be sure to post up as there will be a fair bit of interest!!

Dave!

[tony cordell]

Will Do
What may be comming will give even lower than 30% reduction
fit inside standard transfer case and be a complete set of gears for a reasonable price.

[HSV Rangie]

be good to see what come s of it.

be hard to get much more than 35% reduction withoutmoddingthe case.

lets hope it all comes together.

Michael.

[DiscoDino]

Tony...

If price is "reasonnable" for such a GREAT kit, I'm in...prepare to check shipping costs to Lebanon

[Bush65]

I have recently fitted the 30% lower maxi gears to my LT230. Easy to fit, with a little grinding of the selector shaft and some bosses in the case. Wont fit early LT230's that had needle bearings in the intermediate gear.

I didn't measure the gears before I fitted them, but they didn't appear to have any/much addendum correction factor. I would guess that the 40% lower gears are similar o/s diam with increased addendum correction factor to get the new ratio.

[uninformed]

I have recently fitted the 30% lower maxi gears to my LT230. Easy to fit, with a little grinding of the selector shaft and some bosses in the case. Wont fit early LT230's that had needle bearings in the intermediate gear.

I didn't measure the gears before I fitted them, but they didn't appear to have any/much addendum correction factor. I would guess that the 40% lower gears are similar o/s diam with increased addendum correction factor to get the new ratio.

umm..... what is addendum correction factor????????? and how would increasing it with the same o/d increase to 40%

cheers, Serg

[flat4]

Newq 4wd Montly has great story on Neil Redpaths Ibex sure he has a copy on the way

Cheers Mal

He does, but only because I'm posting it to him. I don't think he knew it was even in this issue. Either that or there was some communication confusion.

Steve

[bushy555]

erm, this is my first post to outer limits, so please be kind.

For what its worth, I think Paula (the boss) quoted me in november a figure of around $1800 for the gears, and new input crossdrilled shaft. I took the easy way out and bought a complete reco'd transfer with 30% reduction for around $2400.00 from Mal.

Sits behind my fourth R380, behind a 200tdi, pushing 35's through standard 3.54 diffs.

I find it excellent, however the torque generated was enough to explode the rear version 1 Maxi drive axle and locker in Feburary. Just went a bit too hard.

/dave

[Bush65]

I have recently fitted the 30% lower maxi gears to my LT230. Easy to fit, with a little grinding of the selector shaft and some bosses in the case. Wont fit early LT230's that had needle bearings in the intermediate gear.

I didn't measure the gears before I fitted them, but they didn't appear to have any/much addendum correction factor. I would guess that the 40% lower gears are similar o/s diam with increased addendum correction factor to get the new ratio.

umm..... what is addendum correction factor????????? and how would increasing it with the same o/d increase to 40%

cheers, Serg

In gear terminology, addendum is the height of the tooth above the pitch diameter.

If teeth are cut on a machine that generates the tooth profile, the addendum can be modified within practical limits.

A +ve (positive) addendum correction factor is often applied to pinions with a small number of teeth to avoid undercutting which severly reduces the tooth strength. Addendum correction is also used to adjust the centre distance between mating gears.

The gear wheel for the maxidrive 30% low range set can not be made much larger because it already interferes with the selector shaft (has to be ground away for clearance). The pinion can not be made much smaller either.

However, more teeth can be cut on a similar od gear wheel by using a -ve (negative) correction factor and fewer teeth can be cut on a similar od pinion by using a +ve correction factor. This would give a lower ratio.

+ve correction makes the tip of the teeth smaller and the base of the teeth thicker. The tip thickness limits the amount of +ve correction.

-ve correction has the opp affect on the tooth profile. The limit for -ve correction is usually determined so that the base circle (for the involute curve on the tooth flank) is not above the working tooth depth.

[Bush65]

Welcome bushy555. Good to see you here at last.

[uninformed]

Thanks bush65 i'm pretty sure thats how mal is going to achive the 40% low.

cheers, Serg[/quote]

[mav]

what about the hilux diff centre conversion?

Thanks for that.
I am against changing the R/P's as I have only recently paid for these to be built up.
3.54's are readily available abywhere should you break one.
I'm waiting on some other developments in the UK re the low ratio gear sets.