| Re: Leigh Harrison Air Bag (Spring) part number [message #366624 is a reply to message #366620] |
Thu, 09 September 2021 07:54   |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma:
|
Senior Member |
|
|
MarkR wrote on Thu, 09 September 2021 06:52Quote:The bigger Firestone bag that I am using is a 7659
Just to be clear, you’re using that bag on a Harrison quad bag setup?
How much difference does it make in your ride Larry?
Any downside to switching to that bag from “stock”?
Did you have a failure that prompted adding the spacer bolts as reinforcement?
Any other modifications necessary?
Could you mix the sizes, as in could I keep a good old one onboard as an emergency spare?
Thanks in advance
The bags that you see in that were experimental and did not work out. They are from a company called "Airbagit". They are bigger than the stock Harrison bags, and had all of the right fittings, fitting placement, and correct bolt pattern. But the end plates are made of aluminum, and when put under the stress of 100psi at fulll up and the slight twist, the aluminum cracked and leaked all of the air overnight. So, I had to go back to Firestone bags. Right now I am running a mix of the two different sizes with the bigger bag on the rear of both sides. No difference in ride just slightly lower pressures. My intent is to change the smaller bags out to the "slightly" larger bag the next time I have the coach up for other maintenance. So, pay no attention to those bags in the pics. I do carry an old bag in case of a blow out, but that is unlikely. Frankly I don't notice a nickels worth of difference in ride between the stock system and the Harrison 4bag. JMHO
As to the adding the spacer bolts, there have been several instances of.....under extreme stress, where the Harrison brackets have reportedly bent. (VERY RARE) Some GMC'rs have modified the brackets adding extra support. Adding bolts like I did seemed like a simple, easy way of reinforcing them. Adding them won't hurt anything and might help if I should inadvertently over stress things. Just my gut level solution is all.
Larry 
78 Royale w/500 Caddy
Menomonie, WI.
[Updated on: Thu, 09 September 2021 07:56] Report message to a moderator |
|
|
|
GMCforum
Search
Help
Register
Login
Home
