Reply
 
Thread Tools Display Modes
 
Old 03-21-2017, 10:07 PM   #1
Senior Member
 
Join Date: Feb 2016
Posts: 149
ExtremeAire Magnum: Burst Hose!

I have used the ExtremeAire Magnum portable unit on two outings so far and both times the polyurethane red coil hose blew out at the same location (ref. attached image). The first time was on the fourth tire in sequence airing up from 35 psi to 65 psi, the second time was on the third tire at the same pressures.

The compressor is rated as continuous duty and I would assume there is no cool down necessary during use. The plastic red hose gets quite hot (hot to the touch!) at its brass junction with the black reinforced hose, which softens it, causing it to burst. Not a good thing out in the field.

Has anyone else had this issue? My workaround is to submerge the hose junction in a basin of water to dissipate the heat. Works well enough but not very elegant.

Otherwise the unit works great.
Attached Thumbnails
P3121352.jpg  
__________________

Jack K is offline   Reply With Quote
Old 03-21-2017, 11:33 PM   #2
Senior Member
 
rallypanam's Avatar
 
Join Date: Feb 2013
Location: San Francisco/Nevada City
Posts: 3,638
I have the yellow lines with mine (I think). Never had an issue. But I don't put them back in immediately after... I give the compressor a few minutes to cool down.
__________________

rallypanam is offline   Reply With Quote
Old 03-21-2017, 11:42 PM   #3
Senior Member
 
Join Date: Feb 2016
Posts: 149
Mine burst during use, one time after the second and the other after the third tire were inflated to 65 psi. I'm always mindful to store the hose and cable separate from the hot compressor and fittings after I'm done. I wonder if the yellow hose is a different material from the red? How long have you had your compressor, and is it the same model? Thanks for the reply.
Jack K is offline   Reply With Quote
Old 03-21-2017, 11:56 PM   #4
Senior Member
 
rallypanam's Avatar
 
Join Date: Feb 2013
Location: San Francisco/Nevada City
Posts: 3,638
I've had mine for three years, but it came used with the van.. not sure when PO purchased it.

I'll have to look tomorrow to see which model.. it is 100% duty cycle.
rallypanam is offline   Reply With Quote
Old 03-22-2017, 04:26 AM   #5
Member
 
pugslyyy's Avatar
 
Join Date: Dec 2016
Location: Northern Nevada
Posts: 50
Extreme Outback has US based tech support out of California. Call them and ask what's up.
pugslyyy is online now   Reply With Quote
Old 03-22-2017, 07:01 AM   #6
Senior Member
 
boywonder's Avatar
 
Join Date: Jul 2013
Location: So Cal
Posts: 2,945
This is physics/thermodynamics 101 at work......

compression processes put out a lot of heat....grab he bottom of your bicycle pump when pumping up road bike tires....

...and expansion processes take in a lot of heat......that's how air conditioners work, and also why spray cans get cold when you spray for a long time.

Having a plastic (polyethylene/polypropylene) hose right at the outlet of the compressor is asking alot for continuous duty.....probably fine for short durations. Household and industrial compressors have metal tubing (sometimes finned in commercial units) from the compressor to the reservoir tank. The metal tubing and reservoir tank volume dissipate most of the heat so that by the time the air gets to the hose it's back to ambient temp.
__________________
2008 E350 RB passenger 4WD SMB penthouse
2013 KTM 350 EXC
2008 KTM 250 XCF-W
2000 KTM 200 EXC
2003 Honda Element
boywonder is offline   Reply With Quote
Old 03-22-2017, 07:29 AM   #7
Senior Member
 
Join Date: Nov 2014
Location: Aurora, CO
Posts: 328
The user manual states a 30" long leader hose (heat dissipation hose) should be used when using the compressor for long periods of time or high pressures. They sell them through their site, but I am pretty sure you can find them on Amazon too.

Sent from my SM-G935V using Tapatalk
__________________
New Van: 2000 Ford E350 SMB RB42
Old Van(sold): 1995 Dodge B3500 SMB RB33
Ben10281 is offline   Reply With Quote
Old 03-22-2017, 07:59 AM   #8
Member
 
pugslyyy's Avatar
 
Join Date: Dec 2016
Location: Northern Nevada
Posts: 50
Quote:
Originally Posted by Ben10281 View Post
The user manual states a 30" long leader hose (heat dissipation hose) should be used when using the compressor for long periods of time or high pressures. They sell them through their site, but I am pretty sure you can find them on Amazon too.

Sent from my SM-G935V using Tapatalk
From the photo it looked like it was attached to a leader hose, but if I am mistaken yeah that could certainly do it.

They spent some time designing an improved check valve that would handle the heat - my original one had completely blown out.
pugslyyy is online now   Reply With Quote
Old 03-22-2017, 08:50 AM   #9
Senior Member
 
Join Date: Nov 2014
Location: Aurora, CO
Posts: 328
Quote:
Originally Posted by pugslyyy View Post
From the photo it looked like it was attached to a leader hose, but if I am mistaken yeah that could certainly do it.

Ahh, yes didn't notice that on my phone screen. It looks like VIAIR sells braided stainless leader hoses, I wonder if some leader hoses dissipate heat better than others?
__________________
New Van: 2000 Ford E350 SMB RB42
Old Van(sold): 1995 Dodge B3500 SMB RB33
Ben10281 is offline   Reply With Quote
Old 03-22-2017, 09:13 AM   #10
Senior Member
 
rallypanam's Avatar
 
Join Date: Feb 2013
Location: San Francisco/Nevada City
Posts: 3,638
Oh crap, I don't even have any leder hosen.

__________________

rallypanam is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 05:56 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.