How do i tune a jet engine for a tank?

[Brooke7125]

Im trying to build a tank using two jet turbine engines, however when I get the engine started, I put power to the clutch, than the tank takes off super fast, but eventually bogs down so slow that it shuts off. Ive tried everything, I know its not fuel or anything of the sorts, what could be going wrong?
pid values are standard .01, 0, .1, 200

[Shillelagh]

The jet eventually runs out of rotational energy under such high loads. Gear it down until it remains constant.
Should require a super high gear ratio.

[Brooke7125]

I tried fixing the gear ratio, however it dosnt make near the speed that I hoped, infact it makes less speed than using a conventional medium engine, any other suggestions?

[Shillelagh]

Originally posted by Brooke7125:

I tried fixing the gear ratio, however it dosnt make near the speed that I hoped, infact it makes less speed than using a conventional medium engine, any other suggestions?

Add more turbines.
Turbines produce more power at 0 additional cost, besides space, weight, and the actual cost of the turbines.
That or use clutch slipping and flywheels for near infinite power

[Brooke7125]

so would it benefit me to have say, 3 or 4 turbines on one engine than two single turbine engines?

[Shillelagh]

Originally posted by Brooke7125:

so would it benefit me to have say, 3 or 4 turbines on one engine than two single turbine engines?

Absolutely

[Brooke7125]

for some reason its still not working...

[Brooke7125]

who knew making an M1A1 would be such a pain

[bendigo (1983-2023) RIP]

You might consider using the turbine to power a generator that runs an electric motor.

You can use 1 compressor and cumbustion chamber to run 2 or 3 turbines that run a large generator to make more than enough power to spin a large or medium motor that makes more power than most diesel engines and jet turbines.

[Brooke7125]

alright, ill give that a shot, think the charge will keep up tho?

[bendigo (1983-2023) RIP]

You just need to get the generator to output more power than the motors draw. A large motor needs around 1200w at full throttle. so if you can spin a large generator Fast enough you can get more than enough power.

[bendigo (1983-2023) RIP]

here is something i have been using to test muliple turbines. You can mess with some numbers to see how efficient you can make it.

https://steamcommunity.com/sharedfiles/filedetails/?id=2782851241

[Brooke7125]

good news! that worked perfectly!

[Brooke7125]

Thanks a lot, this actually makes things a whole lot easier as well, not I dont have to gear in forward and reverse using only (w,s) lmao, I can just use the elec motor throttle

[bendigo (1983-2023) RIP]

It actually opens up a lot of possibilities, One is to use diferential power to each track if you use seperate motors, you can use a throttle for speed, and either invert the throttle or subtract or add throittle to either motor to turn.

The biggest downside is fuel consumtion, but tanks are not known for their fuel effeciency.

i have been able to get it to work at 20 rps on the turbine with gearing to the generator to run at 2.3L/s and still run a large motor at full throttle. You can reduce turbine rps if running the motor at lower throttle.

[Brooke7125]

honestly, Im running 45 rps and im getting decent consumption given the M1A1 irl is known to be horrible on it lol, anyway, I think I did a decent job thanks to you. I ended up running one medium motor to two gear systems, one gear slows them all down to proper speed, two you switch to to go slower, and the final is a reverse gear. I made what i can only describe as a neutral steering "contraption" with thresholds and such so it uses neutral steering
at low speed, than brake steering at high speed