Onboard air compressor
- Thread starter S.Simcik
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at the reveal there was a 3-d printed version inside the frunk. It’s been posted on here several times if you do a search you may find it.
It was shown in the reveal - but the cfm has not been mentioned.
In addition to the air compressor it would be awesome to have the software to have the vehicle alert you when airing down and reaching the desired PSI much like Hummer EV does.
for offroading, the only "issue" is having a compressor that has the duty cycle to air tires up after being aired down - and the volume to do it in a reasonable time. That said, reasonable time is relative I guess. Even the fastest electric vehicle compressors are not all that fast. I have a ARB dual, and it is still slow. But about the only thing faster is either a belt driven compressor (not directly applicable to an EV - although an EV could have a high voltage compressor) - or a CO2 tank.
I get what you're saying, but I have the air compressor in my Rivian and it works quite well. I don't know the time frames in which you think would qualify as fast but I can from 30 (recommended min PSI from Rivian) back up to 48 PSI within 5 mins or so. But this might bring up another interesting point on the differences between airing down in an EV as opposed to an ICE vehicle which we know you can go much lower on PSI with.
While an offroad EV would probably be heavier than an ICE in general - I would bet it is more location, rim, and tire choice. And in all fairness, the super long fill times I recall were airing my ranch truck back up, not an offroad vehicle. I only took it down to 10 psi - but it wants to be aired up to about 55psi for road use (and has 35" tires).
That said, I am not a hard core offroader. Just occasionally have to air down at the ranch after I do something stupid and find worse conditions than I had been betting on.
That said, I am not a hard core offroader. Just occasionally have to air down at the ranch after I do something stupid and find worse conditions than I had been betting on.
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With the proper setup, the industry-leading ARB twin cylinder air compressor can refill four 35" tires from about 16 PSI to 36 PSI in about 5 minutes. The higher pressures take quite a bit longer. Single piston compressors from the past would take 20-30 minutes. If there’s an onboard air compressor, and Scout is offering 35” tires, they should offer an upgrade to a twin cylinder compressor or make that the standard.
ICE vs EV doesn’t matter w.r.t. air up times or air pressures; it’s just the tires, their internal volumes, the pressure you start and stop at, the elevation, and the efficiency of the air compressor.
ICE vs EV doesn’t matter w.r.t. air up times or air pressures; it’s just the tires, their internal volumes, the pressure you start and stop at, the elevation, and the efficiency of the air compressor.
Agreed. Jeep JL and JT have similar features. Aftermarket Tazer JL has a similar option as well. It can be handy when airing up or down. To be honest though, I typically just go by the gauge on my air lines so that I can be more precise. I may or may not be a tiny bit anal-retentive when it comes to tire pressure. If Scout could program it to be fairly precise, I would be all over a feature like this!
I have an ARB dual as well and I do love it, but yes it still takes several minutes to fill up four 37 inch tires from say 15 to 34 PSI. It’s not as big of a deal though now that I finally have a setup where I can hook up to the valves, turn the compressor on, and walk away to do other things while it airs tires up.
So what I’m hearing is smaller tires are better for off roading
I agree that if a compressor is offered from the factory it needs to be able to air up in reasonable timeframes otherwise it’ll be a near-useless option for those who use them weekly and everyone will just do the same things we’ve always done with the vehicles that haven’t come with compressors in the past. It also needs to be 100% duty cycle.
I do not have any personal experience with the newest compressors, but ARB apparently now has brushless compressors and I have read they can flow about 50% more air than the older models so maybe something like a twin wouldn’t be needed if space were a concern. The brushless models are quite a bit more expensive though. Never mind about the brushless compressors as I’m allergic to expensive.
Ok so we all agree we need a good air compressor in the Scout. However, I read somewhere in the forums that they could potentially be thinking about having two suspension options? I think this is awesome, but at the same time could be an insanely difficult task in both manufacturing and logistics.
But if Scout is going the air suspension route (like R1 Rivian models) they are going to need a similar to Rivian capable air compressor/tank, as when I get in my R1T and hit the brake pedal the front end instantly raises up to driving level (from kneel position). Basically what I'm suggesting is Scout should do some reverse engineering on the Rivian as their air system is really really good.
But if Scout is going the air suspension route (like R1 Rivian models) they are going to need a similar to Rivian capable air compressor/tank, as when I get in my R1T and hit the brake pedal the front end instantly raises up to driving level (from kneel position). Basically what I'm suggesting is Scout should do some reverse engineering on the Rivian as their air system is really really good.
They got engineers from every brand so I’m guessing reverse engineering and new “NO-Legacy” fulfillment, they may create an all together different approach. With the pressure needed for air suspension to lift a truck this heavy maybe there’s a by-pass valve that connects at compressor to begin tire inflation feed while the compressor strokes on and begins building pressure. Probably an expensive proposition but with no legacy issue to deal with outside the box thinking might help create a new, better way
I would just hire Munro Engineering Firm. They seem to be the real deal.
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Just one side note - I think it is recommended to run the engine while running the ARB dual due to it's amp draw. If Scout ends up wanting to put in a high capacity compressor - they might need to deal with powering it from the main battery rather than the AUX battery. That said, same problem multiplied for a winch. Have to wonder how big the inverter will be to keep that AUX battery charged.
Agreed, they need to have onboard air compressor as a option. When I got my Bronco it had been a few years since I had delved into the offroad hobby and quickly learned not having one was a huge deficit/pain. If folks truly want to take this vehicle offroad, airing down is one of the main things you do to prepare for the fun... and it truly stinks when your done with said fun and no one is around to help you air your tires back up. Don't ask me how I know this... So within about a year I installed my own system under the hood, but it was not that easy and was $$ after all said in done. I will gladly check that option box on order day.
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