U1700 UNIMOG @ 110KM/HR!! High-Speed Crown Wheel & Pinion!
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- Опубликовано: 31 май 2024
- We all want to get our Unimogs up to 100km/hr without compromising the health of our engines, but how can we achieve it?
Unidan Engineering has been installing Claas Overdrives in Unimogs since we got our very first project truck. Now that these are pretty much obsolete in the market and no longer being manufactured, we have researched high and low on what the best alternative is. And boy, have we found it!
The High-Speed Crown Wheel & Pinion is certainly the way to go and I'm sure you'll see why in this video. Make sure you watch the full video to see the comparison, explanation and finally, how you can get your hands on this! 
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I am impressed. Very good to know I can drive a Unimog at highway speeds now, if I wanted to.
I was [retty impressed the difference the high ratio diffs made to fuel usage on the way out to the owners weekend recently compared to the standard truck that was with it on the trip. Towing a trailer and still used less fuel. And then still had no drama in the extreme offroad driver challenge.
Life changing!
How do the portal axles handle these speed increases?
Are these the same as the Hi-Speed CW&P from Atkins Vos in the UK?
I was watching a youtube video awhile ago where Larry Perkins ( Aussie race car legend ) had a U 1700 and made an overdrive kit for it. I sent an email to Perkins Engineering asking if the kits were still available and sadly they are not being made anymore but they do still have the plans for them. Maybe you could do some sort of deal with Perkins to get a batch made and run both the Perkins overdrive and the crown and pinion upgrades to get the revs even lower.
Also what is the Black dual cab mog at the front of your building in the video? I was unable to find any info on it on your website. Cheers
Can you show some more dual cab or setups that can accommodate the kids too?
Truk yang sangat hebat .... ❤❤❤❤
Hey guys - what happens with a tyre blowout at 100kmh in these things? I know some trucks its almost a death sentence (especially front wheel blowouts).... but perhaps these are a bit more controllable?
Great upgrade but how much does it cost ???
Keep up the good work 👍👍
Approx $10,000 supplied only, but that doesn't include any other parts you discover as you pull things apart.
What sort of fuel consumption do you achieve with the higher gearing and bigger tyres?
Would also be interested to know.
I actually used to drive 1B35 which had hi speed diffs fitted for the rally! It used to pull about 130 kmph but was a bit gutless with a load
It's definitely been interesting the experiment with these and see how they go in different situations. We find the hi-speed diffs to be better than the Overdrives when it comes to hills and or towing/with a load as the overdrive felt like it took the power out of the vehicle (gutless) whereas the CW&P seems to hold higher speeds better over crests and whilst towing etc.
That should be expected, as overdrive gears cut horsepower and torque to the wheels.
👍👍👍👍👍
Big difference
Spot on now how much for the tires rims if needed fuel milage n price of diff gears fitted just a ball park amount would be ok as I'm thinking about a 4x4 truck n side on camper to live in n I had ruled out a mog until now due to fuel usage n tire price n road speed but I maybe interested now
Hey David, the best way to get quotes on all of your requested items is to send an email to info@unidan.com.au and we will send it through to you!
Anyone know what fuel consumption it gets with the upgrades?
Great video guys 👌
I'd love to see a couple of walkrounds on the black and Sandy taupe(?) dual cabs 😍
Thank you! A release video of the sandy taupe dual cab is one of the next videos that will be released, stay tuned!
Can't wait haha
Need a little more boost to push the EGT's back a little.
I notice that the tires on this Mog look like the Michelin XZL tires. I have the 395/85R20 version on my truck and Michelin’s maximum speed limit on these tires is 55mph, or 90kph. You should be careful to point this out to customers, as there could be a liability issue for you if there is a tire failure at higher speeds.
Unimog make versions with 'high speed axles'. No portal axle though in the high speed version probably due to performance issues, heat, wear and tear.
high speed axles are portal axles, but with a different crown wheel & pinion ratio ;)
Have you spoke to perking engineering in Melbourne i do believe he fixed up the some problem
Yes, know Larry well. His Overdrive was designed to suit the UHN. Some have been modifying it to suit the SBU Unimogs however it’s not cost effective at all.
What fuel economy are they doing with bigger tyres and changed gearing
Approx. 22-26L/100km, depending on how heavy your right foot is.
You guys need to show your factory mfgering some overland vehicles.
Hey there, we will be moving to our new factoring in July and will be documenting the move and doing a walk-through video once we are all settled in. We have a lot more video ideas planned so stay tuned!
You did not state what size the taller tyres are on the truck at 1:31
The tyres on the truck are 395/85R20 tyres. These ones are Michelin XZL's, however we also stock Earthmax BKT's in this size.
I suppose you can not gear it to at 2200 rpm to do 100 kms hour or that take to much off your low range first gear. By law you can only do 100kph at that weight
Why did Mercedes Benz remove the option of increasing the speed of the Unimog trucks? Did anybody ask them? Is it a safety measure? These are Off Road Farm Tractors on 4 equal sized wheels with trays and extensive hydraulic systems. Designed to run on highways at a maximum speed of 90kph.
Every Australian farmer understands the value of Creepy-Crawly slow speed gearing. It is a farm tractors that can be driven on the road.
The only reason that the ex-ADF Unimogs are limited is because of the way that they were ordered by the Australian government. All new Unimogs are computer speed limited to 100km/hr due to the NHVR. The speeds gone in the video are just a test of the system that we installed and definitely not a recommendation. 100km/hr is safe and comfortable for both these upgraded vehicles and the new Unimogs.
Do the new (2017 and up 4023/5023) Unimogs need these high speed mods?
Hi there, all new model Unimogs come with the ability to travel at 100km/hr at 2350RPM (speed limited to this). However, we can order them from the factory with high speed axles and get 100km/hr at 1900RPM.
Good video BUT once again, the sound level is too low. Please grab an iPad, bring up RUclips then listen to this and other videos on your channel.
You need a microphone since the volume is to low to hear.
Unimog and speed is nonsens. Why ? The axel reductions who make the axle higher, out of the midlle can't handel the heat, have only 25 cc of oil, that makes a mist and damp after long stretches of road at high speed. The oil leaves by the airvent in the axle and never returns to the reduction box. Less oil, more heat, more friction and damaging everything inside, bearings and axle. The bearings have no inner ring, so the axle is donne. The whole thing cost a lot of money.; Solution ? an oil return thing with some expansion vessel and looking glass for the oil contense. And, I made " free wheels " on the front axle where the most risk is for the probleme. On the high way one dus'nt need all the friction in the front axle to the gearbox. A standard Unimog has a max rpm dieselpump of 2800, because in the army everybody drives something that's not to be payed out of their pocket. I have put the thing on 3200 rpm. Not for speed but the gap between 7th and 8th gear. It's a lot of work schifting gears and in the time that it takes , the rpm go's down, for sure when it's a bit uphill. So, to have the turbo doing it's job, we have to stay as high as posible above 2400 rpm. I have a bigger radiator with electric fans and a thermostat to loose no hp with all those belts that can snap and that metal fan that can be used for a airplane and I have an extra outside oil cooler with a thermostat and fan, because the engine has to be warm as fast as posible to not spoil the climate too much, but not overheating and I drive on recycled bio diesel to forcome the moment that governements will forbid to use fossil fuels for privat use.... 🙂
Sound quality problem
Should have shown the original axles in off road
Just go and watch any other one of our videos or any video of any Unimog ever. People that are interested in this product know what the original axles are like in off-road situations.
@@unidanengineering You guys still seem to be the best operation around. But, when I look at Mogs going slow in all the other videos, I will not be able to have a direct comparison with wheel size, and knowing if they have a working gearbox or not, and if the idle speed is the same, and the videos will be apart in time. Kudos to you for pointing out that the axles are way too fast for rock hopping. You don't have to take advice from every random on RUclips comments, and you are super successful. I am about to attempt to land at Geosurveys Hill in a very small aeroplane, so not a potential customer yet.
Swap an om606 with hx35 turbo and bigger elements, it will rec up to 6k rpms. You can double your top speed lolll.
Sound?
Hey Jakob, you might want to check your speaker settings or make sure it's not muted. There's definitely sound. Hope that helps :)
@@unidanengineering Correct, there is sound. Could you stand closer to the mic like when you bent down to show the rack & pinion?
Working group? I can’t hear overly well 😂
What is a “working Group”?
A wireless lavalier mic isn't that expensive...
Thanks for the feedback. Maybe have a look at our most recent videos as this is something that we have now but didn't over a year ago when this video was made.
Да яярад @131*
Buys unimog .
Changes fundamental unimog characteristc .
JUST BY A BUS .
That's fine if you dont do any road travel or dont mind traveling at 90Kph (a.55mph) at redline.
My pick, provided the money is not an issue, Swap to 46"x20" wheels + new CW&P + working set + maybe power upgrade. Win everywhere (except wallet).
Better road speed and/or economy (depending on how hard you push it).
Better off-road ability (better Grip, approach, departure and breakover angles).
Better general ground clearance, river fording height, better Sand/Mud/Rock climbing ability etc etc etc.
Only downside is the extra $$$. You can keep your Unimog Purist attitude and struggle on the road, stay off very soft sand, fail hill climbing, etc.
The Unimog is an excellent base vehicle. But the older ones (ex defence force ones from the 70's and 80's) can definitely be improved on now.