Mercedes-Benz Forum banner

1 - 14 of 14 Posts

·
Unimog Moderator
250GD Wolf
Joined
·
13,632 Posts
Discussion Starter · #1 ·
Anyone seen this? I know the side gears are easier to do, but if you had enough horsepower (I don't) and wanted a better (lower RPM) cruising speed, this might be an option. VASTLY cheaper than the Mercedes gears and you can keep your housing.

SUPER FAST CRUISING AXLE RATIO
We have developed a “super-fast” crown wheel & pinion to suit most Unimogs with 6 bolt axles.
They can be fitted into standard axle casings without modification and original Mercedes seals & bearings are used upon assembly.
The 24:11 ratio gives a 17% gain on the Mercedes “fast” ratio and a massive 44% increase on the standard crown wheel & pinion ratio.
The benefits include:
-More relaxed cruising.
-Reduction in engine revs at same cruising speed.
-Reduction in noise levels.
-Reduction in fuel consumption.
-Increased range.
-Improved usability
-Increased re-sale value.
A higher top speed is also possible where conditions allow for this to be safely achieved.
A further advantage over buying new crown wheels & pinions from Mercedes is that the “diff casing” does not need to be changed. This costs over £1500+VAT in addition to the costs for the Crown wheel & pinions.
The crown wheels & pinions are made in Europe to top standards by a manufacturer who specialises in truck differentials & gears.
Full assembly & setting up instructions are provided.
For suitability please contact us with your Unimog chassis number and axle numbers.
Introductory offer valid until 31/10/16. £1250+VAT for one Unimog set (2 crown wheels & 2 pinions). Standard price £1950+VAT.
 

Attachments

·
Registered
'76 Case MB4/94, '76 U1500 Ag Spec.
Joined
·
373 Posts
Oooof.

Nice. But I'm thinking of how much of a dog my 406 is with the loader and counterweight mounted.

I suppose if I cranked up the HP a bit...
 

·
Unimog Moderator
250GD Wolf
Joined
·
13,632 Posts
Discussion Starter · #3 ·
Yeah, and lower gears if you only have the 6/8spd box. Nice to know they are available though.
 

·
Registered
1986 435 U1300L Krankenwagen
Joined
·
66 Posts
I was speaking with Simon at AV about these only yesterday. I have an Ambulance with an OM352 and standard axles and want a more relaxed cruise. He's convinced (though I'm not) that they will work fine and is aiming them at camper guys like me. They'll be fitting a set to one of their non turbo ex-BW 1300L's next month and offered me a test drive. At £1250 + £1400 (bearings and 2 days labour) on loose axles it sounds an ok deal. I'll report my findings once I've had a drive.
 

·
Registered
'78 CASE MB4/94
Joined
·
378 Posts
Then maybe I could use 1st and 2nd for more than just reversing...
The price is attractive, especially when compared to new or the used fast ring and pinions that are for sale. I'm interested!
So, I should probably review my workshop manual because it's in there, but, has anyone done this themselves? How hard is the job and what other parts are needed? Shims, crush sleeves or whatever. Oh, and I'm sure opening the diffs will be opening a can of worms and lead to at least three non-related additional repairs.
 

·
Unimog Moderator
250GD Wolf
Joined
·
13,632 Posts
Discussion Starter · #6 ·
Check out Bill Caid's website, he has a photo walkthrough of the job that Kai did for him.
 

·
Unimog Moderator
250GD Wolf
Joined
·
13,632 Posts
Discussion Starter · #9 ·
This is very useful too, though it is in German.

Schnelle Achse
I could tell that even without reading any text: :eek

WOW, the axle even stripped down like that weighs a ton! I like the placement of the "STOP" on the bucket :)

Achsbau_07.jpg

Also, guy obviously has a great sense of humor
 

Attachments

·
Registered
'76 1300L,HE351CW,H15P Winches,Konis,Hydraulics,All Gears,10mm Plungers,Aftercooler,Lots of Littles
Joined
·
3,077 Posts
A 44% increase in driveline and gearbox torque is should be reviewed as well. Esp for those UNIMOGs with the older generation gearboxes. That is a major change in stress on the rest of the driveline.

MB did upgrade the gearboxes for the extra HP and higher speed axles on the later trucks.

Lastly, I would buy 3 if it were me. If you ever need a spare, and AV is not making them, it will be a problem and you will be buying 2 sets from MB.

C.
 

·
Registered
2015 Rubicon Unlimited (Let the shame be upon me!)
Joined
·
4,122 Posts
Are they the ones that ordered "Whoop Ass Fajitas"?

A very long and enjoyable read.
 

·
Registered
U500 with Unicat camper
Joined
·
871 Posts
24:11, or 2.182, is actually the R&P ratio for U500, both North America and ROW. Portal for NA is 38:14 = 2.714. ROW = 38:13 = 2.923.
 
1 - 14 of 14 Posts
Top