Hi Neil;This might be a good question for Dennis Haynes.  I have an 87 Westy 2WD and have been accused of driving it in places a syncro would go more than a few times (not that I could afford it, but my wife says no syncro 'cause of where I might take her, and break down).  Dennis helped me out by finding rotten shock perches and need for suspension work.  He gave me a couple of options for ride vs. comfort vs. longevity.  Maybe this will poke him and he will chime in.
Dave B.

-----Original Message-----
From: Neil N <musomuso@GMAIL.COM>
To: vanagon@GERRY.VANAGON.COM
Sent: Wed, May 13, 2020 4:29 pm
Subject: Mono Tube vs Twin Tube Shocks (dampers)

Hi folks.

I appreciate that there's a lot of variables involved with this but....

For a 2wd Westfalia that is sometimes driven on rough bumpy or
washboard type dirt roads, which type of oil + gas charged shock will
likely last longer? Mono tube or twin tube?

My Sachs OE type shocks don't seem to hold up for very long given that
I drive on bumpy dirt roads at times. I don't want to spend a lot of
money and will sacrifice ride comfort for a shock that might last
longer.

Given what I've read, it seems that a mono tube design shock is
simpler in design, might shed heat better, and tends to be used on
trucks so may last longer.

Thanks,

Neil.

-- 
Neil n

VE7TBN

1988 Westy 50º ABA swap: https://tinyurl.com/yap5hpwt

1981 Westy 15º ABA swap: https://tinyurl.com/y9n4xob8

VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>