wvracer821
Well-known member
After watching the Dirt Lifestyle series on YouTube I decided to document my own Maxi Trac compressor mods. Mostly this is just ****ing around to see what this thing can do.
If you’re not familiar with this compressor, here is the Napa link.
Link to dirt lifestyle videos for reference
This compressor is sold under many names. Vevor from amazon seems to be the cheapest and the MorrFlate unite seems to be the best out of the box. Here’s the link for the MorrFlate and the Vevor for reference. NEVERLIFT just picked up the Vevor one for his truck so we can do some testing when I’m done to see if any of this was worth the effort.
morrflate.com
I purchased this compressor when they first hit Napa shelves a while back and it’s been living in my toolbox of my daily driver since then for the occasional tire fill up. My plan is full on board air build for my daily driver tow rig. This should do much better than my little Dewalt inflator which struggles to get my 37s back up to street pressure.
This thing is cool but it has its downfalls which I’ll outline.
Heat… it gets ****ing hot which is related to other things below
No pressure cut off, when you flip the switch, it just runs constantly. (MorrFlate has a pressure cutoff)
Small outlet. Even though its got 2 compressor heads, they are tied together and the single outlet is only 1/8 NPT
Stupid fittings. The hose that comes with it has a stupid fitting and coupler that doesn’t match anything else that’s available. Plus, the gauge included is worthless if the compressor is running.
False claims of output. 10.6 CFM seems ambitious and is likely just calculated based off cylinder volume and RPM. (I’d like to tear down the MorrFlate and see how the internals compare)
Impractical output. A single valve stem can’t flow nearly enough air to utilize the output. MorrFlate specifically states that this is to be used for their multiple tire inflation setups.
I will be setting this up with a pressure cutoff off and a small tank in my toolbox to limit the pressure and also give the thing a break if I’m doing tires one at a time.
I started by tearing it down to see what I was working with. Although I had a good idea after watching some videos.
Typical Chinese manufacturing and so much grease inside all over everything.
Next step was opening up the intake side of things with a die grinder. You can see the difference I made here.
You can see the actual air intake is very small through the little slots.
Next, I opened up the air filter holder and I took a UNI fourwheeler filter that I had laying around and cut out new filter elements. First pic shows the whole filter holder in virgin form
My next plan of attack was the intake and discharge reeds. I drilled the holes in the plate bigger and kept the factory reeds but at one point I was using an old feeler gauge to make a larger reed until I realized I didn’t want to sacrifice all my 0.060” feelers for this dumb project.
I opened up the intake holes from 17/64” to 11/32” and the discharge holes from 13/64”to 17/64”. Looking back I would have stopped at 1/4” on the discharge holes because I had to glue the O-Rings in after removing too much material. You can see the modified plate on the right and the difference in the discharge holes which is the bottom set.
Other side of the unmodified plate and the O-Rings mentioned previously
I greased everything up and reassembled but I turned the discharges to one side to make OBA plumbing easier when the time comes. This is when I found that the discharge holes are not 1/4” NPT like I thought. I plan to drill and tap them to 3/8” NPT so I can use normal fittings. But it does pump air and it’s loud as hell. I will gather some more parts and continue this. I want to get some test data at some point. I am very aware that this is mostly useless and the compressor would have been just fine in factory form but whatever, I’m always in for a side quest.
I also would like to drill some holes in between the heat sink fins since they don’t actually touch the cylinder. It can’t hurt to add some air flow to the system.
If you’re not familiar with this compressor, here is the Napa link.
Link to dirt lifestyle videos for reference
This compressor is sold under many names. Vevor from amazon seems to be the cheapest and the MorrFlate unite seems to be the best out of the box. Here’s the link for the MorrFlate and the Vevor for reference. NEVERLIFT just picked up the Vevor one for his truck so we can do some testing when I’m done to see if any of this was worth the effort.
MORRFlate TenSix™ Portable 12v Off Road Air Compressor - Gen2 • MORRFlate
10.6 CFM dual cylinder compressor at 0 PSI 6.5 CFM at 30 psi 150 psi rated PSI Cutoff Switch (80psi on, 120psi off) Thermal Cutoff Switch & Purge Valve 80% duty cycle @ 0psi (45min on, 10min off) (6-8 vehicles) (see duty cycle chart) 12v, 90amps peak, ~50amp running 14x7x9" external...
morrflate.com
I purchased this compressor when they first hit Napa shelves a while back and it’s been living in my toolbox of my daily driver since then for the occasional tire fill up. My plan is full on board air build for my daily driver tow rig. This should do much better than my little Dewalt inflator which struggles to get my 37s back up to street pressure.
This thing is cool but it has its downfalls which I’ll outline.
Heat… it gets ****ing hot which is related to other things below
No pressure cut off, when you flip the switch, it just runs constantly. (MorrFlate has a pressure cutoff)
Small outlet. Even though its got 2 compressor heads, they are tied together and the single outlet is only 1/8 NPT
Stupid fittings. The hose that comes with it has a stupid fitting and coupler that doesn’t match anything else that’s available. Plus, the gauge included is worthless if the compressor is running.
False claims of output. 10.6 CFM seems ambitious and is likely just calculated based off cylinder volume and RPM. (I’d like to tear down the MorrFlate and see how the internals compare)
Impractical output. A single valve stem can’t flow nearly enough air to utilize the output. MorrFlate specifically states that this is to be used for their multiple tire inflation setups.
I will be setting this up with a pressure cutoff off and a small tank in my toolbox to limit the pressure and also give the thing a break if I’m doing tires one at a time.
I started by tearing it down to see what I was working with. Although I had a good idea after watching some videos.
Typical Chinese manufacturing and so much grease inside all over everything.
Next step was opening up the intake side of things with a die grinder. You can see the difference I made here.
You can see the actual air intake is very small through the little slots.
Next, I opened up the air filter holder and I took a UNI fourwheeler filter that I had laying around and cut out new filter elements. First pic shows the whole filter holder in virgin form
My next plan of attack was the intake and discharge reeds. I drilled the holes in the plate bigger and kept the factory reeds but at one point I was using an old feeler gauge to make a larger reed until I realized I didn’t want to sacrifice all my 0.060” feelers for this dumb project.
I opened up the intake holes from 17/64” to 11/32” and the discharge holes from 13/64”to 17/64”. Looking back I would have stopped at 1/4” on the discharge holes because I had to glue the O-Rings in after removing too much material. You can see the modified plate on the right and the difference in the discharge holes which is the bottom set.
Other side of the unmodified plate and the O-Rings mentioned previously
I greased everything up and reassembled but I turned the discharges to one side to make OBA plumbing easier when the time comes. This is when I found that the discharge holes are not 1/4” NPT like I thought. I plan to drill and tap them to 3/8” NPT so I can use normal fittings. But it does pump air and it’s loud as hell. I will gather some more parts and continue this. I want to get some test data at some point. I am very aware that this is mostly useless and the compressor would have been just fine in factory form but whatever, I’m always in for a side quest.
I also would like to drill some holes in between the heat sink fins since they don’t actually touch the cylinder. It can’t hurt to add some air flow to the system.
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