AEC Noticeboards The AEC NOTICEBOARDS
ADVERTS • PHOTOS • DISCUSSION
Celebrating the products of AEC Southall Ltd, most famous as builder of London's buses.

It is currently Mon Aug 20, 2018 12:27 pm

All times are UTC




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Ethanol brake addative
PostPosted: Mon Oct 13, 2014 7:58 pm 
Offline

Joined: Sun May 18, 2014 10:35 pm
Posts: 17
Hi, once again i am seeking advise, my Mandator has an Ethanol system in the brakes, there is a tankin the cab with an inlet (filtered)and this is then piped to the inlet of the commpresor, i was at a show recently and told that adding ethanol will improove the air preasure what are your thoughts on this and if so where would i get some ethanol to put in the tank i would say its maybee 1/2 pint sized
thanks Graham


Top
 Profile  
 
PostPosted: Sun Oct 19, 2014 8:44 pm 
Offline

Joined: Sun Sep 29, 2013 8:07 pm
Posts: 13
Hi Graham

Hearsay from "experts" causing you problems.

Ethanol is an additive to airbrake systems to prevent icing in frosty weather. The alcohol is mixed automatically with the damp air to lower the freezing point and prevent valves and drain taps from becoming blocked with ice. Only required in winter weather.

Does not increase air pressure in the system. This is set by safety unloader valve and pressure regulator valve to manufacture's spec.

You could try truck auto factors like Big Wheels.

Hope this helps

Regards Adrian


Top
 Profile  
 
PostPosted: Thu Oct 23, 2014 8:15 am 
Offline

Joined: Sat Jan 14, 2012 10:24 pm
Posts: 112
I would be very worried about having (M)ethanol in the cab, it is highly inflammable and burns with a flame that is difficult to see. It will also make you high breathing in the vapour. The place for it is on the chassis.

It is, as said, used to prevent the air system freezing in cold weather. The injector unit usually has a tap to turn it on and off.

If you seriously intend to use the vehicle in weather conditions which would warrant taking precautions against the air system freezing then you would really be better off installing an air drier complete with heater element. You would need expert advice since the Mandator uses an unloader valve to control air pressure from the compressor; the air drier unit will take over this function, but will need to be plumbed in correctly.


Top
 Profile  
 
PostPosted: Mon Oct 27, 2014 9:29 pm 
Offline

Joined: Sun Sep 29, 2013 8:07 pm
Posts: 13
Totally agree.

All vehicles I operated with this system had external reservoirs.

Only re-pipe necessary to move.

Please remember windchill factor when driving, this can cause freezing when you don't expect.

Draining reservoirs daily in use is a good precaution.

Thanks to other contributor, for reminding me to mention external reservoirs for reason he stated.

He is quite correct about fumes.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group