Compressors: Patton philosophy?

[off-roader]

Has anyone else heard of this happening to an MV-50?Whould I cut the inline fuse holder out and replace it with a different amperage?

Nope. That's a new on for me on this unit, but then again, i'm no expert.

Yes I would replace the fuse holder but put the same amperage fuse in.

 

[poriggity]

I had the chance to borrow a friends MV50 to air up last weekend, and I was impressed with the power and speed for such a small compressor. For the price, I think it would be hard to beat the MV50. That being said, I am slowly collecting parts for my York engine driven OBA setup.. I already have the compressor mounted in the truck, but I need all the little crap that adds up fast to it...
I say go with the MV50 and roll with it.
Scott

 

[Token]

FWIW.. I started with a MV-50.. Decided it was a bit slow and it had issues with wanting to go into thermal shutdown before I'd get all four tires aired up... Stepped up to the dual piston Q89.. It'll get all 4 of my 35's from 14psi back to 40psi in about 15 minutes..

The only OBA setup I've seen that will beat it is a a York.. We aired 4 sets of 35's with one of those in under 20 minutes.. You could prolly run air tools on the York without a tank.. Those things move some air..

Decided it was a PITA to have to dig it out all the time, open the hood up, to get it on the battery and all that jazz.. Hard mounted it in the back of the H3, tossed the aligator clips and hard wired it to a battery that is in the back as well..

This actually brought about a problem I've yet to resolve.. Being hardwired rather than using the aligator clips it has better access to high current flow and it is continually overloading the circuit breaker.. As it standa I get about 30psi back in the tires before it wants to take a 20 minute rest..

Recently picked up a Viair setup with tank.. Not sure yet if it will be a replalcement for the Q89 or something to add to it..

Either way, I was overall pretty happy with the speed of the MV-50 and the Q89.. Just the issues with overheating/overloading and shutting down.. I'm sure there's a remedy, I just havent got it figured out yet..

 

[off-roader]

FWIW.. I started with a MV-50.. Decided it was a bit slow and it had issues with wanting to go into thermal shutdown before I'd get all four tires aired up... Stepped up to the dual piston Q89.. It'll get all 4 of my 35's from 14psi back to 40psi in about 15 minutes..

So is it safe to assume you're getting 2x the cfm of the MV50?

The only OBA setup I've seen that will beat it is a a York.. We aired 4 sets of 35's with one of those in under 20 minutes.. You could prolly run air tools on the York without a tank.. Those things move some air..

Decided it was a PITA to have to dig it out all the time, open the hood up, to get it on the battery and all that jazz.. Hard mounted it in the back of the H3, tossed the aligator clips and hard wired it to a battery that is in the back as well..

This actually brought about a problem I've yet to resolve.. Being hardwired rather than using the aligator clips it has better access to high current flow and it is continually overloading the circuit breaker.. As it standa I get about 30psi back in the tires before it wants to take a 20 minute rest..

wow, 20 minute rest?

Recently picked up a Viair setup with tank.. Not sure yet if it will be a replalcement for the Q89 or something to add to it..

Either way, I was overall pretty happy with the speed of the MV-50 and the Q89.. Just the issues with overheating/overloading and shutting down.. I'm sure there's a remedy, I just havent got it figured out yet..

hmmm, perhaps a 12v fan blowing onto the compressor?

 

[Token]

Specs on the Q89 are 3.17 CFM.. MV50 is spec'd at 2.54 which is the same as the Viair 400.

The MV50 took a bit over 25 miutes to get all 4 back up to road pressure.. The Q89, when running right will do it in about 15..

Found a replacement circuit breaker and have it on the way.. Those push button reset breakers are a PITA to find in anything over 20 amps.. I've spoke to a few other folks that are using the Q89 and they aren't having issues... Since it's not it's not the thermal shutdown in the compressor causing the shut down, the only other part in the line that could be having issues would be the circuit breaker.. It's a $5 Chinese electonic part so there's a pretty good chance it could have been weak from the start.

If it still pops the breaker, I'll just wire around the breaker and see how long it takes for it to cook the 80 amp relay and catch the thing on fire..

 

[rusty_tlc]

How big a hurry are you in to get home?

I have the Harbor freight version of the MV-50.

I always enjoy savoring the last few moments of a trip while I air up my tires, faster is not always better. If for some reason I'm short on time or need to get moving in a hurry I can always just air up to 28# or whatever will get me to a gas station.

If i really need to air a tire up in a hurry I bust out my 5# CO2 tank.

 

[sasaholic]

i was using a harbor freight compressor and actually still have it in my truck, but recently got a good deal on a superflow mv90 and its much faster airing up my 35's. its rated to air up a 35 from 0-30 in just over 2 minutes. i havent decided if i want to hardwire it yet or not. either may ill probably keep my harbor freight compressor in my truck untill it dies and let all my buddys that dont have compressors use it instead of my mv 90.

 

[off-roader]

i was using a harbor freight compressor and actually still have it in my truck, but recently got a good deal on a superflow mv90 and its much faster airing up my 35's. its rated to air up a 35 from 0-30 in just over 2 minutes. i havent decided if i want to hardwire it yet or not. either may ill probably keep my harbor freight compressor in my truck untill it dies and let all my buddys that dont have compressors use it instead of my mv 90.

Yeah, that MV90 looks pretty powerful... 3.7 cfm. 40 minute run time at 40 psi @ 75*f. Only thing troubling is the max operating temp of 90*f?!? What the hay?

 

[maxama10]

I've been running a Viair 90P but it takes nearly 30 minutes to fill all 4 of my tires. I'm talking to a guy about selling it and then using the money to help pay for an MV90.

The Viair is a well built unit though and I'd hate to replace it with something unreliable. I really don't want to be stuck out in the desert/mountains with 15 psi and have to limp a long distance back.

I'm wondering if it'd be better to purchase an MV50 and keep the 90P and run both. Two is one and one is none and all that...

I've heard mostly good things about the MV90. What do you guys think?

 

[sasaholic]

the mv90 is fast and i havent had any troubles with mine yet and i bought it slightly used(guy went with a york) it stays cooler than any other compressor ive seen used. oh btw its fast haha. with any compressor i use i air up my front tires first that way if it dies i most likely have those done and its easier and alot safer to limp to the gas station on low rear tires than it is on fronts.

 

[SChandler]

I'm going to go against the grain here, or at least, provide a different light on the MV50. I have one, it worked okay for a while, but they don't like high pressure. Mine worked good up to about 40psi when it was new, then slowed down drastically. I used it once to inflate 2 235/85R16's to 80psi and I've used it a couple of times to take 2-255/85R16's tires up to 60 psi. It took 10-15 minutes per tire to go from 35 (normal rear tire pressure for me) to 60 psi (max. pressure for my tires, 255/85R16's). I also used it a couple of times to air up the 255's from 20 psi to 35-40 psi per tire (all four). The pump is dead now. I'm not sure why, I haven't taken it apart yet. However, the last time I used it, it refused to inflate my tires over 30 psi. And it took 45 minutes to get them there from 20 psi.

My words of caution on the MV50: if you aren't going to fill your tires much over 30 psi and you give it time to cool down in between tires, it should do you okay. If not, your money will be better spent on something else.

 

[eric1115]

I'm going to go against the grain here, or at least, provide a different light on the MV50. I have one, it worked okay for a while, but they don't like high pressure. Mine worked good up to about 40psi when it was new, then slowed down drastically. I used it once to inflate 2 235/85R16's to 80psi and I've used it a couple of times to take 2-255/85R16's tires up to 60 psi. It took 10-15 minutes per tire to go from 35 (normal rear tire pressure for me) to 60 psi (max. pressure for my tires, 255/85R16's). I also used it a couple of times to air up the 255's from 20 psi to 35-40 psi per tire (all four). The pump is dead now. I'm not sure why, I haven't taken it apart yet. However, the last time I used it, it refused to inflate my tires over 30 psi. And it took 45 minutes to get them there from 20 psi.

My words of caution on the MV50: if you aren't going to fill your tires much over 30 psi and you give it time to cool down in between tires, it should do you okay. If not, your money will be better spent on something else.

That's definitely a helpful piece of information... I'm running 235/85/16's now, and my Landcruiser is lighter than your Dodge, I bet. I generally run ~40 psi on the street, so I'm not concerned with airing up to 80 psi (except for a small tank to run tools or a blowgun occasionally). I think my plan is to go ahead with an MV50, and to start putting pennies away to pick up something with a bit more muscle later on if the MV50 croaks or isn't fast enough.

You guys are a helpful, classy bunch! I've been lurking for quite a while, and there's a great combination of information and community here. Other places (cough, PBB, cough, what?) have lots of great information, but not exactly the sort of place I like to hang out unless I'm after some specific bit of tech info.

Eric