Our
specialty is gas springs – it is not a side line!
Get Your High Quality Nitro-Prop Gas filled struts here, why wait
10-20 days for a mediocre product?
USA SELLER
– USA STOCK –
FAST SHIPPING
Need
help in getting the correct unit, e-mail us or send your phone # we are always
happy to help!
WHY PAY MORE?
Cannot find what you need? We can
custom make it!
Unlike Many
Sellers we carry an extensive line of end fittings, mounting brackets and ball
studs for our struts
MORE Gas
springs listed in our Store
This Listing is a
REPLACEMENT SET
for Knaack Storagemaster Chest – OEM part # KN
977-2PK
Example Box Models, 89, 90, 91
TIP:
when selecting a replacement unit always
compare your old unit in both length and pressure to insure proper fit
ALSO
be sure what end
fittings you need – some Assemblies may use this part # with different end
fittings
You are buying
Nitro-Prop
brand Struts
Fully extended … 17.2 inches …
Fully retracted … 10.2 inches (center to center of the ball socket)
Diameter rod = 8mm / tube = 18mm
End thread = M6 x 1, Ball size =10mm
You are
bidding / buying (
2ea
) gas spring / shock /
strut Manufactured for
Nitro-Prop
Strut
and Spring (NP-REP-977) this unit is totally self-contained,
hermetically-sealed, a hydro pneumatic linear actuator containing pressurized
nitrogen gas, which provides the output force.
This unit and comes
complete with threaded removable 10mm nylon ball sockets both on the rod and
tube ends (if you are in need of mounting brackets or ball studs see our
selection listed in the store)
The
shipping and handling
is a set cost of $13.90
(postage + partial packing cost) for the first and $5.00 for each additional
(multiple items may be shipped USPS or FedEx depending weight and
destination)
We ship to the USA
only
SHIPPING DISCOUNT
… We are happy to discount shipping
on multiple lots or when purchasing from multiple auctions to provide the you
the best shipping rates when ever possible. PLEASE ask for an invoice to get
combined shipping. FAILURE TO WAIT FOR INVOICE WITH COMBINED SHIPPING WILL
RESULT IN LOSS OF COMBINED SHIPPING DISCOUNT-
eBay has no option
to allow sellers a refund for S&H fees
once paid
(Shipping charges will not be adjusted after payment has been
received.)
If you are looking for a
replacement, upgrade or thinking of adding a gas spring to anything you would
like assisted power in opening – closing or to be held open hands free this may
be for you. Gas springs offer a unique alternative to conventional mechanical,
coil spring or counterbalancing devices. The spring rate for a gas cylinder is
far less than for any type of mechanical spring. The advantages of these springs
involve the combination of a relatively flat force curve, versatility of
controlled forces, extension speed, damping at the end of the stroke along with
a very compact design. Each gas spring contains a specific amount of oil, which
lubricates the seal, piston and piston rod, as well as acting as a damping
medium. The oil within the cylinder, when it is compressed or extended, moves
from one side of the piston head to the other, providing a damping effect.
Replacement TIP:
There are many brands of gas springs / shocks / struts
manufactured today with just about as many names Nitrogen gas, gas, struts,
springs, shocks, dampers etc. , some have a part number that is as equally
confusing to understand with out a reference guide! If you are looking to add or
replace any gas shocks (they all get weak, worn, bent or broken and need to be
replaced at some time) it is easier than you think, here are the basics
1.
Just measure the extended length of
your shock (from the center of the socket to the center of the socket) that’s the
length (that was easy!)
2.
If you do
not know the force pressure, and it is not listed on the shock (most times it
is encoded in the part number on the shock) you can always do a simple test, IE
camper topper lid … use a scale to measure the force needed to hold the door open!
a.
Be sure to take the old
struts off!
b.
PLACE
the scale at the point the strut
connects to the door / lid (at the bracket)
c.
IF 2 struts are used
divide the weight in half.
That
will get you really close
3.
Shocks can come in the same length
and force pressure but different in physical size (rod diameter / tube
diameter- 6×15 / 8×18 / 10×22 / 14×28 MM etc) I think of the physical size in
terms of ratings … standard duty (6x15mm) … heavy duty (8×18) … extra heavy
duty (10×22), and when nothing else will do use the maxi 14x22MM
4.
Mounting brackets / studs can be
permanent or replaceable the most common are the ball and socket style (10mm or
13MM) then the ring / eye style. Many shocks come with threaded ends to allow
for interchangeable configurations. If you have the option I like to use the
ball and socket when ever adding a shock as it is much more flexible then the
ring / eye style.
Removal TIP
:
it is very easy to replace most gas
springs / shocks/ struts, the most common connection used is the nylon “ball
joint socket” to remove your old unit simply insert a “flat” blade screwdriver
under the spring clip (you do not have to remove the clip) using the slot
provided in the back of the socket, push the screwdriver down just a bit this
causes the spring clip to open and it will release the ball end. The new unit
now just “pushes” on and snaps in place, that’s it you’re done!
If you do not find the size,
length or configuration you are in need of in any of our listings, we will do
our best to get it listed right away, please just
Contact
us as we have most all the
gas struts / springs that are / were used by WRV, Alpine Coach, Alpenlite,
Marathon, Beaver, Safari, Winnebago, Keystone and more. And they fit boats,
campers, car and truck hood lifts, Rear glass lifts, toppers and more!
Happy Bidding!
Thank-you for your interest
Please click the ICON
ME
next to Strut-Your-Stuff-Here, this
tells a bit about me and the items that will be up for sale. Please be patient
for answers to your e-mails, as I do not get to work eBay full time. Please be
sure to check out our other auctions, click view sellers other items.
Be sure to
check out our store items
, and
sign up for the STORE news letter
(just click on the “sign up” button in the top right
hand side of this page) as we do mark down items just to see who is watching …
you will be surprised as to what those prices will be, but they only stay on
sale for a short time so be sure to watch your e-mail for the notifications!
Mike and the boys say you
can always Strut-Your-Stuff-Here!
811iknacck90