Air Compressor Pump up Time

[windtrader]

Cool! Thanks.

Summarizing airbag performance

Pressuring up from zero to 80psi - Varies depending on specific coach air system (# of bags, tanks, etc.). Generally about 5-20 minutes.
Pressuring up from 85-100 psi - less than 2 minutes.

[luvrbus]

Cool! Thanks.

Summarizing airbag performance

Pressuring up from zero to 80psi - 15-20 minutes.
Pressuring up from 85-100 psi - less than 2 minutes.

No the air dryer should purge at 120 lbs in 15-20 minutes, the 85-100 psi is after all the tanks are full and equalized then you start the test of 85 to 100 psi by pumping the pedal to lower the psi for the recovery test   

[windtrader]

OK. I'm not clear how long is normal for system to air up fully from zero. Purge time is time from fully pressured system @120psi takes 15-20 minutes to release all the air?  Can you kindly state the timeframes? Thanks

[luvrbus]

There is no time frame all buses are different it depends on how many air bags and size,how many tanks and size, air beams or not and the size of the compressor they are all different. TomC has a AM transit it will have a large air system for stop and go city traffic.
A Eagle bus will air up from 0 and ready to in 5 minutes because you don't have the air bags to contend with.My MCI DL3 will air up from 0 to 120 psi in under 10 minutes push the button and drive off in under 10 minutes so that is the best I can answer that question it depends on the model of bus