oldgit
Well-Known Member
.....need to be .
Cannot read anything on the piston case of my knackered old units .
150nm or much bigger ?
Cannot read anything on the piston case of my knackered old units .
150nm or much bigger ?
Engine bay covers. How powerful does a set of replacement gas struts....
- Thread starter oldgit
- Start date
Portofino
Well-Known Member
Tricky one .Assume abscence of spec ?
If it's too powerful you end up ripping the hinges out .
Too week and it falls shut when a fly lands on it .
Guess work - chuck a dart
If it's too powerful you end up ripping the hinges out .
Too week and it falls shut when a fly lands on it .
Guess work - chuck a dart
CLB
Well-Known Member
How about a spring balance to see how much weight there is to lift. Then do some sums to work out how much extra effort the gas strut will need to add based upon probably being further back. Then divide by two, if you are having two, then take off a tiny bit, so they assist, rather than lift, the stick your finger in the air and take a wild guess. 
rlw
Well-Known Member
Not easy but indeed be carefull about overdoing it by more than 20% or so . Don't ask me how I know 
. Some of the sites selling gas springs have instructions on how to calculate the load.
. Some of the sites selling gas springs have instructions on how to calculate the load.
TheOrs
Well-Known Member
Phone these guys https://www.sgs-engineering.com & ask them, then maybe use a set of their adjustable gas struts. https://www.sgs-engineering.com/gas-struts/adjustable
rosssavage
Well-Known Member
GSV8-200 is the SGS part number for my hatch strut.
Means Gas Strut Variable 8mm shaft 200mm closed length. It is precherged to 700N, and I’ve let a fair amount of gas out to get is finely balanced.
Get the dimensions, and go for an adjustable one
Means Gas Strut Variable 8mm shaft 200mm closed length. It is precherged to 700N, and I’ve let a fair amount of gas out to get is finely balanced.
Get the dimensions, and go for an adjustable one
TheOrs
Well-Known Member
GSV8-200 is the SGS part number for my hatch strut.
Means Gas Strut Variable 8mm shaft 200mm closed length. It is precherged to 700N, and I’ve let a fair amount of gas out to get is finely balanced.
Get the dimensions, and go for an adjustable one
Yep, exactly. I bought GSV8-250.
Phildorset
Well-Known Member
Nice info - mine need replacing and I've been wondering how to work out what to get.
Silly question #1; Is 'closed length' literally the distance between the two ends when fully compressed/closed... if so mine must be around 450mm or so I reckon... I like the idea of adjustable, I have a little bicycle shock adjuster pump - is this maybe the sort I'd be needing to adjust these?
Silly question #1; Is 'closed length' literally the distance between the two ends when fully compressed/closed... if so mine must be around 450mm or so I reckon... I like the idea of adjustable, I have a little bicycle shock adjuster pump - is this maybe the sort I'd be needing to adjust these?
omega2
Well-Known Member
We use the deck broom! LOL
TheOrs
Well-Known Member
You can only reduce the pressure, not increase it. They are supplied fully charged (very hard to compress). You fit them and bleed out pressure until they operate nicely. When I first fitted mine I couldn't move the engine cover. As per rosssavage I had to let a fair amount of the pressure out in order to get a nice action.
If you bleed out too much pressure you have to send them back for recharging. So, a little at a time and check carefully.
oldgit
Well-Known Member
Do not forget the boathook
.....and that mysterious bit of stainless steel pipe with a rubber knob one end and a pointy bit on the other, that eventually turned out to be the support to stop the flybridge cover filling with water, then doing its best to soak you and then flood the cockpit when you try to empty it .
Going to need 6, four for the engine hatches and two for the lazerrette.
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