Route your belts freely underground. Thats just an updated Version from the Original from Therax. I made if compatible with Space Age with the help of a cool guy from the Factorio Discord.
I am not sure what you mean with "doubling the bolts". Can you explain it better ? Did you mean stacked belts ? And how do you know that the speed is different ? How did you test it or found out ?
I have Double Speed Belts and
Ultimate Beats Space Age, and your underground pipeline seems to be taking vanilla, would it be possible to combine them? so that the mod adjusts the speed https://prnt.sc/86_z4S9-Q4gC https://prnt.sc/NjjYRFycjbN9
First its not mine "Pipeline" mod as such as Beltlayer isnt mine. I just updated Beltlayer to be compatible with Space Age and im still trying to understand the code and fix bugs. And its not that easy ifs not yours. And you are now using a mod to increase belt speed. That will be funny...I will try my best to fix that.
I understand, I tried to update the mod myself, namely realistic thermonuclear weapons, I'm not in a hurry, you can safely do it, I'm just saying what can be added or fixed if possible, Thank you for your work.