Thank you very much for sharing your knowledge about these technologies involved in the manufacture of your trucks, which I am a great admirer and fan of! One day I hope to fulfill my dream of having such a truck, even a small one would be very happy! congratulations!
Firstly, thank you for sharing your knowledge. I would like to know what type of pass through gasket, it seems like a twist with a large amplitude for the seals I know.
you could use some custom made spring body mounts instead of a sub frame . . . the spring mounts will compensate for the flex (twist) in the chassis frame, regardless of the degree of flex . . .
Dear Unicat Team! First of all thank you for that video! I know that top hamper suppliers usually do not care about the chassis especially when it comes to frame torsion. It is often seen as given. However, even though all wheels are on the ground there is definitely a high risk that you introduce deformations into the chassis that induce plastic (=permanent) deformations in the crossmembers of the shown MAN TGM when you lift the chassis by 400mm diagonally. Even more, in the long run if you perform such maneuvers repeatedly then there is a risk of cracks or loose rivets and screws in the chassis! Did MAN approve the driving maneuver (400mm) you show in this video?
Before we started building expedition vehicles on truck chassis which is more than 20 years ago, we had asked for information about the chassis torsion but finally had to find out by ourselves. When you do the calculation, you will see that the twist of the chassis rails will not cause plastic deformation. I agree that there is a risk of plastic deformation caused by creeping if you leave the chassis twisted for a long time. But that is nothing you want to do and will do in reality. More than 90 % of all traveling typically happens on paved roads, 9% on tracks and there are always only few situations where you need the full offroad capability of your vehicle. So the time and number of load cycles is very limited. At our UNICAT vehicles, we never had problems with loose rivets or bolts on crossmembers. But that certainly is also related to the fact that we oversize and stay away from the limits. The 4x4 UNICAT TC59 which you have seen on the Video has a weight of appr. 12 tons but the chassis is a 18 ton chassis.
some things i wonder about is would it be possible to make the cab and living space into a single unit with this subframe design? and would it be possible to have air bags to support it similar to how the cab is mounted to the frame? and what about stability with how the center of gravity shifts due to the box? also would having a independent suspension for the tires alleviate the need for frame twist, or would it be better paired together? im not sure what to think on these variables.. racking my brain constantly isnt proving effective for integral parts so id love to hear your ideas and reasoning behind how you do these things. oh and sorry to add context to my questions, ive had the dream for a long time to make a expedition vehicle and almost every time i get a second to think plans and designs riddle my brain and answers are far and few between on the internet so its just been left to speculation on my part.
Thanks guys, great explanation, best I have seen. As an aerospace engineer myself looking for a truck I find this very interesting. Can you explain a little the advantage of having the pivot at the front? Is it possible to do it the other way around or is this optimal? Many thanks, following with interest and hope to introduce a truck into my travel series one day. 👍
Nice explanation! I would like to ask you where did you buy the pneumatic lifts you are using in the video? Or at least what I have to look for? Thank you.
It is great job and brilliant idea Thomas and team, well done. My question is how do you control the unnecessary swing of the box, how do you dump this effect if the box is completely free to swing around the pivot, have you considered installing some sort of small lightweight shock absorbers or something similar under the two sides?
Now I know the purposed of those center pivots for. But speaking of longest travel of rear suspension setup. Unimog has more travel in their suspension set up in 6x6 configuration, because the Unimog 6x6 rear suspension design is like independent suspension. While comparing to Man or Mercedes 6x6 rear setups that are using big springs which are link to the two axles. Just for my opinion.
Dear sir ,i was a year ago by a concurent and a engineering showed me a zetros and he didnt know that the beams where double i ask him why in Breda i mean with that one beam into an other . Is that wy the zetros is famos or is it unnessecary ? It still keeps in my mind, and again i will make the unicat team people a very great compliment in the thinking of the technical design of your own volvo pherhaps overdesignd but thats what we need in the force of the field where they are for designd, the technical knowhow is in the veins of you and your people and somethimes this a curse, but mostly a heaven to do , kind regards acgm Vermeulen.
Many thanks for that impressive demonstration! Always better to actually see it then just to read about the theory. Also thanks for pointing out to consider the twist on add-ons mounted on the chassis (e.g. tanks) and all the other parts. Many try to figuere out the max. twist by lifting the wheels with a forklift etc. But this is only static. I think the twist in dynamic conditions while driving rough terrain would be much higher. As the manufactureres are not providing the details, how is your approach for actually getting the maximum chassis torsion? Keep up that great source of information 😉 Viele Grüße, Florian
Fortunately we are better at making Expedition Vehicles than videos. Unfortunately cause Covid 19, we have to make arrangements internally to make videos, without video professionals, only Thomas and a Unicat employee. We are trying to do something useful for everyone, since the Abenteuer-allrad exhibition was canceled this year. If you don't like them or if you find them poor, you can always watch something else, RUclips is full of videos! Good day
UNICAT Expedition Vehicles - ich schaue gerne Unicat Fahrzeuge und bin zu 100% an Qualität gewohnt!!! Desto mehr hatte mich das dilettantisch aufgenommene Video geärgert! Alles Gute 👍
Sorry, aber das ist schon ein bisschen überheblich Herr Kowalski. Seien wir doch dankbar und froh, dass ein solcher Hersteller sein Wissen an alle Kunden und Interessierten einfach so kostenlos weitergibt. Klar, der Ton ist teilweise schlecht, aber wie ich gelesen habe ging das externe Mikro nicht. Kameraführung usw. ist doch alles ok... Wer lieber eine im Studio gedrehte Seifenoper schauen will, bitte schön, das Netz quillt über davon. Wer jedoch fundierte Infos zu solch einem Spezialthema sucht, der kann wahrscheinlich sehr gut auch ohne Ü-Wagen, Kamerateam, Tontechniker, Beleuchter etc. produzierte Videos leben.
ChaosCamperCouple - tut mir leid aber das stimmt nicht ganz was du schreibst. Es gibt viele Beispiele von super Filmen, aufgenommen nur mit Handy und zusatz Mikrofon auf RUclips. Man muss nicht beim Wind, Regen, oder anderen störenden Geräuschen aufnehmen.
Being able to build trucks for millions but also being to stupid to use wireless microphones and a wind protection. And please do me a favour: Please speak in your nativ language and use subtitles. Combined with your creepy audio it is a pain in the ass to listen to you.
Wow, how greatful you are for getting some in depth information for free... Thomas is German but nevertheless makes an effort to speak in an international language which most of the people will understand. They are not a professional TV company but still share their valuable knowledge with us, for free. If you are interested in the topic, you will manage to understand all of the video. Just as I and many others did. But in cases like yours, I propose to switch the channel and watch some sit-com etc.
@@ChaosCamperCouple I must admit, I was not particularly polite, but that was quite intentional. It's strange that I have to be grateful for free knowledge. It's more about paying attention to details, because as a potential client I realize that you can't manage to spend a few hours of work and maybe 100 - 200€ for better sound. If it doesn't work even with such small details, I wonder if the vehicle is of the same quality as the video. Well meant is the opposite of well done.
@@goainge2 Well, for me it's strange not to be greatful for free information, especially when people put effort in providing this to us. For example, when you look at other companies in this segment, they present some nice shots of their vehicles in some remote area but you don't get any real information like this. OK, maybe it's also some advertiment for such a company, but I rather doubt that many of their customers will decide to by a Unicat based on such videos... But for those really interested in the details, they get some real good points to consider when checking the quality of builts of different brands. Also I cannot understand how you could compare the quality of their work with their videos? And as they said, they will also improve quality in the future... ;-)
@@ChaosCamperCouple I doubt that you understand me, and I do not have the time and energy to correct your misinterpretation. BTW: Do you get percentages? ;-)
Sir, I really love your engineering explainations and how humble you are. Be happy, healthy and blessed.
Thanks Thomas, it is quite impressive how much the frame and subframe are able to twist. Great explanation!
Fantastic explanation, I see for truck offroader unicat seems to have the right expertise.
Thank you so much for share your knowledge with us. Greetings from Brazil!
Thank You Thomas for this Excellent video. Thanks UNICAT!!! Atte: Pedro LEON
Thank you for dedicating this interesting moment to us
Thanks so much.
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Please use a wireless microphone for future videos. Thank you anyway for the knowledge sharing. Excellent.
Thank you very much for sharing your knowledge about these technologies involved in the manufacture of your trucks, which I am a great admirer and fan of! One day I hope to fulfill my dream of having such a truck, even a small one would be very happy! congratulations!
Thanks so much.
Don't forget to subscribe to our channel and activate notifications to receive all the news
very-very cool!!! UNICAT+MAN - Best from the best!
A very good and informative video thank you!
You could use a chassis with highly articulated suspension, like a Tatra.
very informative! thank you for sharing!
Thanks so much.
Don't forget to subscribe to our channel and activate notifications to receive all the news
I love this guy!!!
Firstly, thank you for sharing your knowledge. I would like to know what type of pass through gasket, it seems like a twist with a large amplitude for the seals I know.
Thanks for that impresives videos! regards from Spain!
you could use some custom made spring body mounts instead of a sub frame . . . the spring mounts will compensate for the flex (twist) in the chassis frame, regardless of the degree of flex . . .
Dear Unicat Team! First of all thank you for that video! I know that top hamper suppliers usually do not care about the chassis especially when it comes to frame torsion. It is often seen as given. However, even though all wheels are on the ground there is definitely a high risk that you introduce deformations into the chassis that induce plastic (=permanent) deformations in the crossmembers of the shown MAN TGM when you lift the chassis by 400mm diagonally. Even more, in the long run if you perform such maneuvers repeatedly then there is a risk of cracks or loose rivets and screws in the chassis! Did MAN approve the driving maneuver (400mm) you show in this video?
Before we started building expedition vehicles on truck chassis which is more than 20 years ago, we had asked for information about the chassis torsion but finally had to find out by ourselves. When you do the calculation, you will see that the twist of the chassis rails will not cause plastic deformation.
I agree that there is a risk of plastic deformation caused by creeping if you leave the chassis twisted for a long time.
But that is nothing you want to do and will do in reality. More than 90 % of all traveling typically happens on paved roads, 9% on tracks and there are always only few situations where you need the full offroad capability of your vehicle. So the time and number of load cycles is very limited.
At our UNICAT vehicles, we never had problems with loose rivets or bolts on crossmembers. But that certainly is also related to the fact that we oversize and stay away from the limits.
The 4x4 UNICAT TC59 which you have seen on the Video has a weight of appr. 12 tons but the chassis is a 18 ton chassis.
Thank you for your time and your extensive explanation!
Would love to see an updated video with wheel lifts that are that 20 cm higher. that maximize cab to chassis twist.
Will constant twisting cause stress fractures in the chassis?
Hi Sir, I love your vehicles and wonder if you ever think to build them over a Tatra base?
some things i wonder about is would it be possible to make the cab and living space into a single unit with this subframe design? and would it be possible to have air bags to support it similar to how the cab is mounted to the frame? and what about stability with how the center of gravity shifts due to the box? also would having a independent suspension for the tires alleviate the need for frame twist, or would it be better paired together? im not sure what to think on these variables.. racking my brain constantly isnt proving effective for integral parts so id love to hear your ideas and reasoning behind how you do these things. oh and sorry to add context to my questions, ive had the dream for a long time to make a expedition vehicle and almost every time i get a second to think plans and designs riddle my brain and answers are far and few between on the internet so its just been left to speculation on my part.
is a sub frame necessary to install a rear chassis frame mounted camper body unit???
Thanks guys, great explanation, best I have seen. As an aerospace engineer myself looking for a truck I find this very interesting. Can you explain a little the advantage of having the pivot at the front? Is it possible to do it the other way around or is this optimal? Many thanks, following with interest and hope to introduce a truck into my travel series one day. 👍
if you watch the Live streaming that we recorded on Monday 11.05.2020, there is a lot of information about it.
Pivot is at both front and rear, the solid mount is in the centre, where there is the least twist.
well explained, thank you!
Great video !! How many degrees can it withstand sideways before it overturns?
Hallo Thomas,
in UNICAT are you working only with MAN or also with Mercedes Zytros?
Viele Grüße
Hi, we use any type of frame, depending on the customer's requests.
Nice explanation! I would like to ask you where did you buy the pneumatic lifts you are using in the video? Or at least what I have to look for? Thank you.
in the warehouses of products for truck mechanics, where they also sell lift trucks, but we bought them almost 30 years ago 😂😂
Thank you for sharing this video so interesting
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It is great job and brilliant idea Thomas and team, well done. My question is how do you control the unnecessary swing of the box, how do you dump this effect if the box is completely free to swing around the pivot, have you considered installing some sort of small lightweight shock absorbers or something similar under the two sides?
There is no dampener. I love the engineering and explanation given by Thomas and Unikat.
Great video.
Now I know the purposed of those center pivots for. But speaking of longest travel of rear suspension setup. Unimog has more travel in their suspension set up in 6x6 configuration, because the Unimog 6x6 rear suspension design is like independent suspension. While comparing to Man or Mercedes 6x6 rear setups that are using big springs which are link to the two axles. Just for my opinion.
So...what does the gas mileage work out to?
WONDERFULL VIDEO
Thanks to you for watching the video and, don't forget to subscribe to the channel
Dear sir ,i was a year ago by a concurent and a engineering showed me a zetros and he didnt know that the beams where double i ask him why in Breda i mean with that one beam into an other . Is that wy the zetros is famos or is it unnessecary ? It still keeps in my mind, and again i will make the unicat team people a very great compliment in the thinking of the technical design of your own volvo pherhaps overdesignd but thats what we need in the force of the field where they are for designd, the technical knowhow is in the veins of you and your people and somethimes this a curse, but mostly a heaven to do , kind regards acgm Vermeulen.
有没有tatra的
need to increase the suspension travel on the rear wheels (especially the rear most wheel since it's a 6X6) . . .
We will talk about it in Live # 6, Monday 18.05.2020 at 18.00 German time
Many thanks for that impressive demonstration! Always better to actually see it then just to read about the theory.
Also thanks for pointing out to consider the twist on add-ons mounted on the chassis (e.g. tanks) and all the other parts.
Many try to figuere out the max. twist by lifting the wheels with a forklift etc. But this is only static. I think the twist in dynamic conditions while driving rough terrain would be much higher. As the manufactureres are not providing the details, how is your approach for actually getting the maximum chassis torsion?
Keep up that great source of information 😉
Viele Grüße, Florian
Thanks for your nice words.
Use external microphone please.
We had bought one but it didn't work, we will improve this too.
TATRA truck is superior in everything. I'm just waiting to be electric, to buy Three.
It possibility open the door...
Yes, of course, we thought when we were done, you're right.
👏👏👏👏🥂🥂
Thanks so much.
Don't forget to subscribe to our channel and activate notifications to receive all the news
It would have been a great video if I could hear anything....
I'm sorry, you don't hear anything, but there was wind and we made the mistake of not using a microphone. We will try to improve this too.
Na ja, wenn Qualität von Unicat ist so gut wie die Aufnahme, dann danke schön.
Fortunately we are better at making Expedition Vehicles than videos.
Unfortunately cause Covid 19, we have to make arrangements internally to make videos, without video professionals, only Thomas and a Unicat employee.
We are trying to do something useful for everyone, since the Abenteuer-allrad exhibition was canceled this year.
If you don't like them or if you find them poor, you can always watch something else, RUclips is full of videos!
Good day
UNICAT Expedition Vehicles - ich schaue gerne Unicat Fahrzeuge und bin zu 100% an Qualität gewohnt!!! Desto mehr hatte mich das dilettantisch aufgenommene Video geärgert! Alles Gute 👍
Sorry, aber das ist schon ein bisschen überheblich Herr Kowalski.
Seien wir doch dankbar und froh, dass ein solcher Hersteller sein Wissen an alle Kunden und Interessierten einfach so kostenlos weitergibt.
Klar, der Ton ist teilweise schlecht, aber wie ich gelesen habe ging das externe Mikro nicht. Kameraführung usw. ist doch alles ok...
Wer lieber eine im Studio gedrehte Seifenoper schauen will, bitte schön, das Netz quillt über davon. Wer jedoch fundierte Infos zu solch einem Spezialthema sucht, der kann wahrscheinlich sehr gut auch ohne Ü-Wagen, Kamerateam, Tontechniker, Beleuchter etc. produzierte Videos leben.
ChaosCamperCouple - tut mir leid aber das stimmt nicht ganz was du schreibst. Es gibt viele Beispiele von super Filmen, aufgenommen nur mit Handy und zusatz Mikrofon auf RUclips. Man muss nicht beim Wind, Regen, oder anderen störenden Geräuschen aufnehmen.
Interesting and informative video👍 awful sound quality👎
Leider spricht Ihr nur Englisch und kein Deutsch.
Being able to build trucks for millions but also being to stupid to use wireless microphones and a wind protection.
And please do me a favour: Please speak in your nativ language and use subtitles. Combined with your creepy audio it is a pain in the ass to listen to you.
We had bought one but it didn't work, we will improve this too.
Wow, how greatful you are for getting some in depth information for free... Thomas is German but nevertheless makes an effort to speak in an international language which most of the people will understand.
They are not a professional TV company but still share their valuable knowledge with us, for free. If you are interested in the topic, you will manage to understand all of the video. Just as I and many others did.
But in cases like yours, I propose to switch the channel and watch some sit-com etc.
@@ChaosCamperCouple
I must admit, I was not particularly polite, but that was quite intentional.
It's strange that I have to be grateful for free knowledge.
It's more about paying attention to details, because as a potential client I realize that you can't manage to spend a few hours of work and maybe 100 - 200€ for better sound. If it doesn't work even with such small details, I wonder if the vehicle is of the same quality as the video.
Well meant is the opposite of well done.
@@goainge2
Well, for me it's strange not to be greatful for free information, especially when people put effort in providing this to us.
For example, when you look at other companies in this segment, they present some nice shots of their vehicles in some remote area but you don't get any real information like this.
OK, maybe it's also some advertiment for such a company, but I rather doubt that many of their customers will decide to by a Unicat based on such videos... But for those really interested in the details, they get some real good points to consider when checking the quality of builts of different brands.
Also I cannot understand how you could compare the quality of their work with their videos? And as they said, they will also improve quality in the future... ;-)
@@ChaosCamperCouple
I doubt that you understand me, and I do not have the time and energy to correct your misinterpretation.
BTW: Do you get percentages? ;-)
Thanks for that impresives videos! regards from Spain!