The Ultimate Compressor Review (2021)

[Frans M]

Just wanted to add  alittle observation here on this thread. The overheating of the compresssor outlet hose is caused by high pressure during pumping process. The compressor is basically a pump that creates flow, the pressure comes from the resultant of the restriction e.g: the existing tire pressure, nipple orifice and hose inside diameter. I noticed that when I inflate 4 tires at the same time (with my Vitaly Compressor 2 pistons) with 8mm ID hose, the head pressure during pumping is only around 2 to 5 psi above the system pressure. Maximum 38psi when the system pressure is 35psi. The temperature of the compressor outlet hose was never getting very hot.
On the other side when I inflate only 1 tire at a time, the head pressure during pumping can reach 60 psi and the outlet hose was very very hot.
So normally I inflate 4 tires at the same time for a quicker turn around time and much less heat on the hose. This cheaper compressor that I used is still good and strong with it's orginal outlet hose for almost 3 years now.

[Frederic]

24 minutes ago, Frans M said:

Just wanted to add  alittle observation here on this thread. The overheating of the compresssor outlet hose is caused by high pressure during pumping process. The compressor is basically a pump that creates flow, the pressure comes from the resultant of the restriction e.g: the existing tire pressure, nipple orifice and hose inside diameter. I noticed that when I inflate 4 tires at the same time (with my Vitaly Compressor 2 pistons) with 8mm ID hose, the head pressure during pumping is only around 2 to 5 psi above the system pressure. Maximum 38psi when the system pressure is 35psi. The temperature of the compressor outlet hose was never getting very hot.
On the other side when I inflate only 1 tire at a time, the head pressure during pumping can reach 60 psi and the outlet hose was very very hot.
So normally I inflate 4 tires at the same time for a quicker turn around time and much less heat on the hose. This cheaper compressor that I used is still good and strong with it's orginal outlet hose for almost 3 years now.

Very good point @Frans M, I think this goes in line with what someone told me one, that if you inflate one tire at a time, it will be hard to exceed more than 60lpm due to the small stem valve. So having a 4-hose inflation setup for the big compressors is actually a good thing 👍

[Zubail]

Yes, I think there's a lot of video with speed tests and temperature of compressor 

[ChrisW]

Agreed - when you run the numbers, most pumps can supply volumes well in excess of what one Schrader valve will admit given the surface area of the value and the pressures the pumps works out. 
 

The heating effect then comes up in a few ways: as described above the air line chucks will heat up (most pressure at the tightest constrictions), you will also find the pump will work harder against a higher pressure head due to the constriction. This can be measured indirectly by the number of popped fuses people get when turning the pump on against already pressurised lines!
 

All things being equal, for most dedicated air compressors, a multi-hose setup will be a much better match of flow rates (in terms of time, lessening the work done by the pump, and heat). 
 

From memory the twin ARB compressor is a total waste of performance for single hose inflation, and mostly only makes sense once you start filling four tyres at once. 

[florent sierens]

Hello everyone, 

I just started with off roading,  any advice for a compressor for a my "big"suzuki jimny 😬 😁

 

Thanks

Florent 

[Frederic]

1 hour ago, florent sierens said:

Hello everyone, 

I just started with off roading,  any advice for a compressor for a my "big"suzuki jimny 😬 😁

 

Thanks

Florent 

@J-P L any recommendations?

 

To save weight, these could be worth considering:

Viair 88P - 00088 Portable Compressor Kit With Alligator Clamps, Tire Inflator, Tire Air Pump, 12V, 120 Psi, For Up To 33 Inch Tires: Buy Online at Best Price in UAE - Amazon.ae

BERKUT SPECIALIST R20 Air Compressor Car 4x4 | High-Performance Tire Deflator & Tire Inflator | Must-Have Car Accessories for City & OffRoad | 12V DC : Amazon.ae: Tools & Home Improvement

 

 

 

[J-P L]

@Frederic @florent sierens a single piston compressor is all you need, the Jimny has smaller tires (stock tires are 195/80/ R15) so while a twin piston compressor might be faster the difference is marginal. In terms of space in the jimny, a single piston makes sense. 
 

Florent check the offroad advice on how to disable the traction control for a jimny, if you have not already installed a kill switch.

Edited Saturday at 05:56 PM by J-P L
Additional information

[florent sierens]

@J-P L thanks for the advice!