Check out these two web pages for more airgun information:
American Airgun at http://www5.palmnet.net
and
The Airgun Letter at http://www.airgunletter.com
God Bless.
Brad Troyer
air...@palmnet.net
Sir My-T Dog
Your gun has a synthetic seal, which should be lubricated with two or three
drops of silicon chamber oil. Both Beeman (1-800-227-2744) and RWS (201-767-1995
or http://www.register.com/rws) sell this product. Don't use this oil for any
other purpose, as it has no lubricity and only a weak surface tension. If you
use it for lubrication anywhere else on the gun, it will fail, and you'll get
metal galling. In the chamber, however, it's the only lube to use since it can
withstand the 2000 degree temperature that a spring-air gun generates on firing.
For your mainspring, use either a good spring oil or Snake Oil. These products
will keep your spring moving smoothly inside the chamber. You will have to take
the action out of the stock to do this, and both Beeman and RWS sell stainless
steel oiling needles that allow you to put lubrication precisely where you want.
I recommend buying several needles because you will need one to drop the chamber
oil into the hole in the front end of the sliding steel compression chamber on
both your QB-88 and TS-45.
The Airgun Letter has been testing and tuning a TS-45 for a year now, and we
have gotten its power up to 650 fps with lighter pellets; and the accuracy is
about 0.20" for a 5-shot group, center-to-center, at 10 meters (33 ft.). The
QB-88 is advertised as an 800 fps rifle, but you will discover that it only
shoots in the high 400s. We may be tuning this gun in the future.
We publish a monthly newsletter for airgun users & collectors. Our Web site is
at http://www.airgunletter.com
If you've not yet received a free copy of our newsletter (no obligation, no
follow-up) but would like one, just e-mail your name and postal mailing address.
Tom Gaylord
The Airgun Letter
I've been using Crossman Pellgun oil on a RWS Diana. I believe it is a
synthetic and doesn't harm the seals.
Mailto:viol...@pobox.com
rob...@spirit.reno.nv.us wrote:
# I've been using Crossman Pellgun oil on a RWS Diana. I believe it is a
# synthetic and doesn't harm the seals.
# Mailto:viol...@pobox.com
Airgun lubrication is both a simple and a complex subject. You can get into
it very deeply; but if you're just looking for answers, it doesn't have to be
complicated.
With a spring-air gun, you want to lubricate the piston seal for two reasons.
The first is because your gun burns lubricant with every shot. This was proved
conclusively by Gerald Cardew in his book, "The Airgun From Trigger to Target."
With a low-velocity rifle, like the QB-88 (although they're advertised at 900
fps, they actually only get 450 fps out of the box), the oil you use is not
critical. You can even use a petroleum-based oil, although that is not
recommended for a more powerful gun. Your best bet is to use an oil formulated
for very high temperatures. Both Beeman and RWS sell a spring chamber oil that
is perfect for this use.
The second use of oil in a spring gun piston is to seal the compression
chamber. If the seal is made of leather, it will absorb the oil like a sponge
and retain it until it is all burned off. Leather seals deform to fit the
cavity of the compression chamber. Synthetic seals do not deform, and they
require an ultra-thin film of oil around their perimeter to seal the chamber.
Guns with synthetic seals (like your QB-88) usually have higher velocities
than those with leather seals, although this is by no means absolute.
The oil is introduced into the compression chamber through the hole in the
front of that chamber. This is called the air transfer port. Both Beeman and
RWS sell a stainless steel applicator needle to go through this hole and put
the oil exactly where it's needed. If you don't have a needle, drop 3-4 drops
into the transfer port and stand the gun on its butt for 30 minutes.
In other guns, like pneumatic and CO2 guns, oil is used for sealing only. It
is not burned. Different types of oil should be used in these guns. Crosman
Pellgunoil is perfect for oiling the O-rings and felt wiper pads of these guns.
It has not been formulated for spring piston seals.
Accurizing a Chinese airgun is a subject that takes many pages to convey. We
have done three articles in "The Airgun Letter" about accurizing a TS-45
sidelever Chinese air rifle. Our gun now delivers 0.20" 5-shot groups at 10
meters.
Tom Gaylord
The Airgun Letter
http://www.airgunletter.com
st...@airgunletter.com