High Speed Gearbox for SD202 (D88-D92)

Can you please make the bus to have more power. All these buses are struggling to go uphill even at 8 gradient. Currently they are moving at 20kmph even with boost . I am thinking of making a map with hill stations with maximum of 20 gradient roads and on hair pin bends.
The route will be based on around ootacamund(google ? ).

The performance of the buses seem realistic to me. Remember, we're dealing with buses from the 1970s/1980s with naturally aspirated engines and 3-speed Voith transmissions. Buses with similar specifications operate in my hometown and struggle on inclines as well.

I know but, at least to check the routes, there should be a powerful buses. I also like it to be more simulative. By the time I finish the map there will be powerful buses here . I also need some higher ground clearance buses to run in this route.

vicedens2002 schrieb:

I know but, at least to check the routes, there should be a powerful buses. I also like it to be more simulative

I disagree. The buses in the game are fine and are representitive of the buses available to Berliners in the 1980s.

Zitat :

I also need some higher ground clearance buses to run in this route.

I have never had a problem with clearances. Low-floor and low-entry buses will be worse.

poweredbycng schrieb:

vicedens2002 schrieb:

I know but, at least to check the routes, there should be a powerful buses. I also like it to be more simulative

I disagree. The buses in the game are fine and are representitive of the buses available to Berliners in the 1980s.

Zitat :

I also need some higher ground clearance buses to run in this route.

I have never had a problem with clearances. Low-floor and low-entry buses will be worse.

No.. I am trying to say is that at least for testing purposes. Because my map will be based on steep slopes and bad roads. Is there any way to make small potholes and patches on roads? I meant the bus should be like that in the picture. These buses currently ply in ootacamund areas(infact all buses in my state will be like this).

Credits to original photographer.

You can make small bumps on the road by raising the terrain there over the road's surface. Potholes is a different story. I guess the best choice is to just paint the road over the terrain instead of laying visible splines there, so you can make it as bumpy as you want.

kd schrieb:

You can make small bumps on the road by raising the terrain there over the road's surface. Potholes is a different story. I guess the best choice is to just paint the road over the terrain instead of laying visible splines there, so you can make it as bumpy as you want.

Hmmm.. thanks for the suggestion.. another thing is there any way to make tunnels ? And is there anything that can make the terrain to level at road height (road will be of higher altitude) ?

vicedens2002 schrieb:

Can you please make the bus to have more power. All these buses are struggling to go uphill even at 8 gradient. Currently they are moving at 20kmph even with boost . I am thinking of making a map with hill stations with maximum of 20 gradient roads and on hair pin bends.
The route will be based on around ootacamund(google ? ).

I do have a modified engine file on hand which will give the bus more torque, however, it is based off of that from an Cummins ISL 280HP engine. Apparently the modern engines are too powerful for these types of buses and transmissions. The voith transmission in omsi, starts acting "funny" if you give the engine too much power. I could upload the engine tweak into the download section of the forum tonight. Does anyone know a higher performance version of the bus engine for that era? I am an American and we are used to engines built by Detroit Diesel and Cummins. I do not know what type of engines which were used over in Germany in the 1980s.

Thanks.. Do please upload...

kd schrieb:

You can make small bumps on the road by raising the terrain there over the road's surface. Potholes is a different story. I guess the best choice is to just paint the road over the terrain instead of laying visible splines there, so you can make it as bumpy as you want.

That is the route which I would take! +1 You could give the bump a terrain texture as well to make it look like part of the road or a piece of stone

vicedens2002 schrieb:

kd schrieb:

You can make small bumps on the road by raising the terrain there over the road's surface. Potholes is a different story. I guess the best choice is to just paint the road over the terrain instead of laying visible splines there, so you can make it as bumpy as you want.

Hmmm.. thanks for the suggestion.. another thing is there any way to make tunnels ? And is there anything that can make the terrain to level at road height (road will be of higher altitude) ?

Creating a tunnel is not possible in the editor. I remember someone made one in Blender, but that tunnel didn't work either. Although that could've been his fault.
Terraing leveling is not featured yet, you have to do it manually. :S

krtz07 schrieb:

I added another gear to the transmission to download this file, go here

http://www.philadelphiatransitvehicles.info/OMSI/D851-4speed.zip

Extract the contents to the following directory or wherever the Man_SD202 directory is located.
C:\Program Files\m-r-software\Omsi\Vehicles\MAN_SD202

Do not worry, nothing will be overwritten!

Instructions, start up OMSI, look for the SD202 - D86R under the Man Selection.

Once selected, the edits done to the .bus file should appear.

Gearbox: Voith D851.3 - Retrofitted with Overdrive
Maximum speed: 102 km/h

Hi, I have downloaded the mod (version 1.1) and read what you have changed in the file "antrieb_constfile_D86_retro.txt".
I saw you changed some values from the original setting, but I didn't know why it should be changed. Can you give me some idea about it? Thanks!

- What is the value of antrieb_getr_ratio1/2/3/4 responsible for? I tried to change the values, and unexpected result was found.
- If I want to lower the Maximum Speed but keeping the same number of gears, say 70km/h, can you please give me some recommendation to modify the data?

Thank You so much!

omsikenli schrieb:

krtz07 schrieb:

I added another gear to the transmission to download this file, go here

http://www.philadelphiatransitvehicles.info/OMSI/D851-4speed.zip

Extract the contents to the following directory or wherever the Man_SD202 directory is located.
C:\Program Files\m-r-software\Omsi\Vehicles\MAN_SD202

Do not worry, nothing will be overwritten!

Instructions, start up OMSI, look for the SD202 - D86R under the Man Selection.

Once selected, the edits done to the .bus file should appear.

Gearbox: Voith D851.3 - Retrofitted with Overdrive
Maximum speed: 102 km/h

Hi, I have downloaded the mod (version 1.1) and read what you have changed in the file "antrieb_constfile_D86_retro.txt".
I saw you changed some values from the original setting, but I didn't know why it should be changed. Can you give me some idea about it? Thanks!

- What is the value of antrieb_getr_ratio1/2/3/4 responsible for? I tried to change the values, and unexpected result was found.
- If I want to lower the Maximum Speed but keeping the same number of gears, say 70km/h, can you please give me some recommendation to modify the data?

Thank You so much!

The antrieb_getr_ratio are ratios of the gears on the transmission, however, the shift points are controlled by the antrieb_getr_autoSw values. The values under the antrieb_getr_autoSw are the driveshaft rpm. Since the ratio of the third gear is 1:00, that mean it is a direct drive ratio, meaning the value which I assigned to upkickspeed3 which is 2101. It means that it will up shift at 2101 RPM in 4th gear. In order for you to change the gearing, you have to mess around with the antrieb_getr_autoSw values as well. This includes making the final drive ratio higher as well.

krtz07 schrieb:

omsikenli schrieb:

krtz07 schrieb:

I added another gear to the transmission to download this file, go here

http://www.philadelphiatransitvehicles.info/OMSI/D851-4speed.zip

Extract the contents to the following directory or wherever the Man_SD202 directory is located.
C:\Program Files\m-r-software\Omsi\Vehicles\MAN_SD202

Do not worry, nothing will be overwritten!

Instructions, start up OMSI, look for the SD202 - D86R under the Man Selection.

Once selected, the edits done to the .bus file should appear.

Gearbox: Voith D851.3 - Retrofitted with Overdrive
Maximum speed: 102 km/h

Hi, I have downloaded the mod (version 1.1) and read what you have changed in the file "antrieb_constfile_D86_retro.txt".
I saw you changed some values from the original setting, but I didn't know why it should be changed. Can you give me some idea about it? Thanks!

- What is the value of antrieb_getr_ratio1/2/3/4 responsible for? I tried to change the values, and unexpected result was found.
- If I want to lower the Maximum Speed but keeping the same number of gears, say 70km/h, can you please give me some recommendation to modify the data?

Thank You so much!

The antrieb_getr_ratio are ratios of the gears on the transmission, however, the shift points are controlled by the antrieb_getr_autoSw values. The values under the antrieb_getr_autoSw are the driveshaft rpm. Since the ratio of the third gear is 1:00, that mean it is a direct drive ratio, meaning the value which I assigned to upkickspeed3 which is 2101. It means that it will up shift at 2101 RPM in 4th gear. In order for you to change the gearing, you have to mess around with the antrieb_getr_autoSw values as well. This includes making the final drive ratio higher as well.

Thanks for you explanation! I know much more about it now!
However, why the antrieb_getr_ratio for the 1st gear is the same as the 2nd gear?
From what I have got about the gear ratio of Voith transmission, it is far higher from the set value, and should not be the same as the 2nd gear.
Take an example of Voith DIWA 854.5, the ratio of the 1st gear should be around 5.1-5.4, 2nd gear is 1.36

What value should I set if my target ratio is 5.1-5.4?

Only the developers knows the madness behind the double value for the 1st gear. I guess a very simple explanation is that the ratio used is tied into the torque ratio. The referred ratio on the voith sheet is not the "Actual" ratio of the first gear. It is infact some kind of slip ratio being used in conjuntion with the torque converter. Not too sure how this is done in OMSI.... If the 5.54 ratio in mechanical mode held true, then the voith will shift extremely fast, then will be at a very low rpm in 2nd gear.

I can tell you that antrieb_wandler_fillrate determinds how much the transmission slips in first gear, a lower value = more slippage = less acceleration. Higher... less slippage, however if value is set to high, the bus may be at a standstill. So it is best to leave this value alone.

To get back to your original question just change the antrieb_i_achse to something in the 6 or 7 range

Hello krtz07... nice work guy. I want to ask you if it is big problem to make 18 gear automatic gearbox for trucks. I can add more gear like you but I have problem with speed of each gear... I add 4. gear but the speed of whole vehicle increased too... So when I give 18 gears in gearbox, finally the truck will go.. I don't know, maybe 1500 km/h Is it problem to edit each gear? for example, in the truck when you have first gear, the truck will not go more then cca 5 km/h. In this time is bus going on first gear up to 40-50 km/h.... That's not good to me. I've got problem that, that I don't understond engines to much so my progress in this things is trial and error :-) thx for answer

So the truck only goes 5 kph in the 1st gear and does not accelerate anymore? Well the gearing could support 300 km/h but if the engine does not have the supplied torque, it would only go to whatever amount of speed until enough resistance/drags builds up and matches the horsepower.

1st gear in the truck is very slow gear. Drivers don't use it usually, because during normal situation it is unnecessary. Sorry i don't understund your definition to much, so is it possible to add more 15 gears (18 total) and define each gear for my requirement? :-)

kosakkosak schrieb:

1st gear in the truck is very slow gear. Drivers don't use it usually, because during normal situation it is unnecessary. Sorry i don't understund your definition to much, so is it possible to add more 15 gears (18 total) and define each gear for my requirement? :-)

Well it will be a extremely tedious job to add that many gears into OMSI. My advise is to make the truck to have only 6 to 8 gears. After you created the gears, you will then need to have shift points, that is where things gets interesting at to say the least...But if you master the whole defining shifting points in OMSI, then yea you could have 18 gears.

I read your answer again and I think that you don't undertond me corretly. I know, that engine in bus has not to much power but this is reason why trucks has 18 gears. For better acceleraion etc...
Isn't it better to make normal manual gearbox? :-)

kosakkosak schrieb:

I read your answer again and I think that you don't undertond me corretly. I know, that engine in bus has not to much power but this is reason why trucks has 18 gears. For better acceleraion etc...
Isn't it better to make normal manual gearbox? :-)

It would be, but I have no idea how that is done in omsi!!

I tried to do it. It was very poor solution but it was almost work... If you look in antrieb file in WV golf, it has manual gearbox... I tried to replace automat gearbox from bus and add the manual one... i have to rewrite some definition bud finaly I have problem with torque... I can not give torque to engine, I don't know why because i am not an engeneer :-) but if I defined torque by const it worked... I squeeze the clutch put the 1st gear and the truck ( https://omnibussimulator.forumieren.com/t2751-renault-magnum-500dxi ) goes... Although as in car school, but goes... But I need help from person who understond this thing..

kosakkosak schrieb:

I tried to do it. It was very poor solution but it was almost work... If you look in antrieb file in WV golf, it has manual gearbox... I tried to replace automat gearbox from bus and add the manual one... i have to rewrite some definition bud finaly I have problem with torque... I can not give torque to engine, I don't know why because i am not an engeneer :-) but if I defined torque by const it worked... I squeeze the clutch put the 1st gear and the truck ( https://omnibussimulator.forumieren.com/t2751-renault-magnum-500dxi ) goes... Although as in car school, but goes... But I need help from person who understond this thing..

You taught me something new ! Have fun and good luck, I do know that the clutch key is tab.... I am trying to do the same thing right now to see if it works, if it does work.. I will post on it...
Good luck to you and your project! Hopefully we will have our first real manual vehicle in omsi.

It's sound like as an irony :-) So I am little bit confused at this time. I think that's possible to make manual gearbox from this... but there is small problem, that Wv has gearbox and engine in one file

krtz07 schrieb:

vicedens2002 schrieb:

Can you please make the bus to have more power. All these buses are struggling to go uphill even at 8 gradient. Currently they are moving at 20kmph even with boost . I am thinking of making a map with hill stations with maximum of 20 gradient roads and on hair pin bends.
The route will be based on around ootacamund(google ? ).

I do have a modified engine file on hand which will give the bus more torque, however, it is based off of that from an Cummins ISL 280HP engine. Apparently the modern engines are too powerful for these types of buses and transmissions. The voith transmission in omsi, starts acting "funny" if you give the engine too much power. I could upload the engine tweak into the download section of the forum tonight. Does anyone know a higher performance version of the bus engine for that era? I am an American and we are used to engines built by Detroit Diesel and Cummins. I do not know what type of engines which were used over in Germany in the 1980s.

MAN engines in MAN buses, lol! Also, further to my other posts, I have gained an appreciation for Lothian Buses that I haven't had since the Lynxes were sold off. The traditional colours are back, the new route branding is simple awesome and perfect in every way, and I have travelled on 2 buses in one day in which the driver drove quite quickly, plus I now appreciate the smoothness of the Voith gearbox (esp. the 4 speed version) although I still prefer ZF :p And I also realize its not good to floor it all the time!