Gorilla Posted 17 hours ago Share Posted 17 hours ago Hi Everybody, Nearing completion of my Mack Quantum (photos to follow) and took all the airbags off to check them carefully. Sadly all are in need of replacement. Given the huge difference of price in brands of airbags i wanted to know the following: 1. Do brands matter for reliability? if so which are the best? 2. Do brands matter for comfort? if so which is the best? 3. Are the chinese ones any good? 4. Best place to get a deal for airbags in Australia? Thanks in advance, Chris Quote Link to comment https://www.bigmacktrucks.com/topic/75695-replacement-airbags-for-hendrickson-suspension/ Share on other sites More sharing options...
Geoff Weeks Posted 15 hours ago Share Posted 15 hours ago I have had some really old (30 year?) Firestone bags. There are too many variables to know why they lasted. Like tires they are subject to UV and Ozone damage. Comfort/ride quality is determined by the design of the suspension not the air bag itself. The rolling lobe type that Hendrickson used is a good design, the "bell" shaped piston increases area as the the bag compresses. The Hendrickson splits the load between the Z spring and the bag. The bag does better are smaller high frequency bumps and the spring handles the large "swells" in the road. That is what made that design so popular. The last two question I have no knowledge to share. Quote Link to comment https://www.bigmacktrucks.com/topic/75695-replacement-airbags-for-hendrickson-suspension/#findComment-577900 Share on other sites More sharing options...
Swishy Posted 10 hours ago Share Posted 10 hours ago Gorilla gudday m8 U could play off the price difference between the 'U Bute' truck & Trailer parts uppliers MultiSpares https://www.multispares.com.au/ Souther Cross Truck & Trailer Spares https://sctegparts.com.au/ Truckline https://shop.truckline.com.au/ If U deal direct with china like Alibaba U need numbers off the Air Bag etc and plenty of patience https://www.alibaba.com/ cya Quote Link to comment https://www.bigmacktrucks.com/topic/75695-replacement-airbags-for-hendrickson-suspension/#findComment-577908 Share on other sites More sharing options...
Gorilla Posted 8 hours ago Author Share Posted 8 hours ago Main two things i want to know is weather there are better or worse airbags for ride and longevity and weather the chinese ones are any worse then the much more expensive brand name ones from others experience. So far all the truckers i know who i spoke to just go and buy whatever a shop has and do zero comparison Quote Link to comment https://www.bigmacktrucks.com/topic/75695-replacement-airbags-for-hendrickson-suspension/#findComment-577914 Share on other sites More sharing options...
Swishy Posted 6 hours ago Share Posted 6 hours ago Probly compare quality just like tyres/tires cya Quote Link to comment https://www.bigmacktrucks.com/topic/75695-replacement-airbags-for-hendrickson-suspension/#findComment-577916 Share on other sites More sharing options...
Gorilla Posted 4 hours ago Author Share Posted 4 hours ago 1 hour ago, Swishy said: Probly compare quality just like tyres/tires cya Thus i am here asking for others experience. suppliers wont let me cut their airbags open to see and externally rubber looks like rubber and asking someone who sells a product now days is like asking a salesman in a car yard as to which car is best......obviously he will tell you that the one he wants to sell is best. Also truckies seem to not compare and just buy whatever so asking the ones i know was pointless.' Quote Link to comment https://www.bigmacktrucks.com/topic/75695-replacement-airbags-for-hendrickson-suspension/#findComment-577918 Share on other sites More sharing options...
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