Saturday, December 12, 2009

Derrick's Daisy Powerline 1200 find

OK, it's been 11 degrees outside the past few days, so I've been procrastinating on the wood working projects in the garage. The Crosman 150 grips are gonna have to wait until I can at least feel my fingers out there.

Found this Daisy PowerLine 1200 CO2 pistol at the local gun shop for $15. Normally, I wouldn't bother buying a BB gun, but it looked like it was in almost mint condition. And how wrong can you go for $15? I knew I could at least get some blog material out of it and I can always threaten to send it to Nick. Besides, maybe it'll encourage the gun shop to keep taking airguns on consignment.

The real reason I bought it was that it appeared to have several shared parts with the second model CO2 pistol from Daisy--the semi-auto BB firing CO2 200. The model 200 dates from 1963 through 1976. Nick sent me a CO2 200 (actually about one and a half 200's were in the box) in about 40 pieces several months ago. I'm pretty sure he sent it as a joke. There are VERY few functional CO2 200's left and I think he knew I'd have to attempt repairs.

The original model 200 piercing assembly isn't compatible with current 12 gram CO2 cartridges and the valve seals are relatively complex. So, I was curious when I looked at the 1200 and saw how Daisy had added an end seal for the CO2 cartridge. I assumed the valve was different, too and wanted a look inside. While the model 200 is a true single-action semi-auto, the 1200 must be manually cocked before each shot. The model 1200 replaced the 200 in 1977 and was produced until 1996, it's as if Daisy went backwards in development.

Anyway, back to this 1200. I took it home and found a dead 12 gram cartridge inside as well as about 75 copper-plated BBs. A squirt of Crosman Pelgun oil along with a new gas cartridge and bang. It worked--uh, sort of. The gun fired--but sounded like it was a full-auto machine pistol. Braaaaaap. Unfortunately, it only fired one BB at a time. Had it truly worked in full auto, I'd have left it alone. I'd have probably even added a BB hopper for more ammo capacity. After a dozen shots, the gun worked and sounded as it should. However, a fresh cartridge brought the full-auto sensation back again for the first dozen shots.



"As is", indeed.



The cocking lever.

Left grip appears screwed in place--it's not. Find the finger groove at the bottom edge and lift up then pull off.

Right grip is screwed in place as is the forend. The grips and the rear sight are the extent of the plastic on the pistol.

This screw secures the grip frame directly to the valve assembly.

A slight back and down direction frees the grip frame. No need to remove the trigger springs or safety. (It may help to loosen the shroud screws shown below to make the grip frame pull free if it's stuck.)

Find a screwdriver that fits. The screws are threaded into the die-cast zinc valve body.

Two on the right side, and there's one on the left. (not shown)

The screw at the front of the shroud is different than the other 3.

The two halves of the shroud lift apart.



Black plastic bushing at the front provides a seat for the hammer spring. What? Yep. The barrel assembly is the hammer. When cocked, the barrel moves forward and compresses the spring. The sear catches and holds the barrel forward. Trigger is pulled and the barrel slams backward against the valve, valve opens and blasts the BB out the barrel. You've got to admire the design--there's a certain genius in it's simplicity.



Pin on the end of the barrel? It's the striker for the valve.





Ball bearing check valve. It's really that simple.

This is a 5/16" ball bearing.

Some kind of white synthetic seal for the bearing to seal against. Didn't remove it since it looked OK.

Went through the pellet pile and found several tins of lead shot. Figured I'd try to find the best fit to the bore. That should help with the mediocre accuracy that most BB guns deliver. Wish there was an easy way to add a rifled barrel to increase the accuracy with lead balls. I suppose a barrel could be turned down as one piece to include the base for the cocking lever and the spring seat, but you'd still have to cut a leade for the BB, drill a loading hole at the top, braze on a valve striker and add a pivoting wire catch inside the breech for the BB. I, um, decided to take a pass on all that.

The Gamo lead balls measured from 0.1750" to 0.1765".
The Beeman Perfect rounds looked exactly like the Gamos except they ran from 0.1760" to 0.1775".
And the Crosman Premier BB's were the smallest at 0.1710" to 0.1725".
Test fitting to the barrel indicated that the Gamo's were a nice snug fit. The Beeman Perfect Rounds were oversize and wouldn't even start in the barrel. The Crosmans were too small and rattled their way down the bore.

Maccari heavy tar on the spring to act as a damping medium. It's likely that the full-auto sound was caused by the barrel (remember, it functions as the hammer) bouncing off the ball valve, then rebounding from the hammer spring and striking the valve again--and rebounding against the hammer spring and striking the valve again and rebounding....get the idea? A slightly stiffer hammer spring would also probably solve the problem. Why is it a problem? It wastes CO2 so the shot count drops.

The trigger sear catches on this lip holding the barrel forward until the moment of firing. I gave it a dab of moly grease.

The sear is the pivoting silver bar above the trigger. The reassembly is the exact reverse. A very easy gun to disassemble with no mechanical complexity. Daisy tends to use the same parts for decades, so it's likely that Daisy will have seals available if needed.

I didn't install the plastic forend upon reassembly. It is necessary to install the forend bolt as it secures the front of the trigger frame to the upper shroud. One less piece of plastic on the gun and a cleaner look.

End note: Success! The full-auto effect is gone and the gun functions perfectly. Want it Nick?

8 comments:

JohnFrancis125 said...

Did you happen to note the size of the o ring on the large screw/bolt that holds the spriing and bearing in place. I have to replace.

Thanks,

John Francis

derrick38 said...

John,
I didn't think to measure it. That particular o-ring acts as a seal for the valve body. I'd think almost any o-ring that looks about right will be fine. You could probably even use a few wraps of teflon tape on the threads in a pinch.

Larry said...

I have the same model. Bought it as a kid. Just cleaned it up for my son but it does not seem to have the power it should. Any suggestions?

Anonymous said...

i just used this guide to fish out a jammed bb that got caught in the barrels loading post. had to polish the sharp edges there. thanks

Greg Holmes said...

I just Bought Two of these 1200's real cheap, for My Daughter and I to shoot. This is great info for me to start the refurbish Process.
I'll get to work on them now. :-)
Thank you so much.
Also leaving the forehand plastic piece off for the sleeker look is Genius!

Thanks Derrick,

Greg & Grace in Georgia.

MARTIN GUTIERREZ said...

Hi, my name is Martin , I'm from Argentina and I own a gun daisy powerline 1200, which has a crack in the valve body , I wonder if this replacement is achieved or where to buy it, thanks , greetings .

Unknown said...

This is the best BB gun I every owned. Used to hunt rabbits with it.

John Horwitz said...

JGAirguns review:

It’s really sad to have to write a negative review – especially for a company that is the sole supplier of something you need. The real tragedy is that this was completely preventable. Apparently even mediocre customer service is a thing of the past.

I picked up a Daisy Powerline 1200 BB pistol with hopes of being able to target practice inexpensively. I understand they were made between 1977 and 1995. At a minimum of 22 years I knew that it would need some work before being functional but I was not sure how much.

To my dismay, the gun did not hold pressure from the CO2 cartridge and a very long search of Daisy history and current blogs began. This was in December of 2016. John Groenwold at JGAirguns told me that while the seals were not on hand at the moment, they were being manufactured for him and would be available in the spring of 2017.

I did contact him in March of 2017 and asked if he had gotten the seals in. He said yes. I ordered what I thought was a complete set of seals and one extra Exhaust seal as per our emails:


When the package arrived I put it aside for a while, as my daughter was in for a visit and I wished to spent time with her.

When I opened the gun to replace the Exhaust seal, I noticed that it was the wrong part. Immediately I informed John Groenwold and included photographs of the parts with specific references to the particular part I needed.

Unfortunately, John was out of town for a month and my inquiry was handled by Heather Rowan. Ms. Rowan at first suggested I return the part and pay a restock fee and rebuy the correct part. I believe that would also involve paying a shipping fee as well although we did not get that far.

I had also send relevant portions of a December email where I outlined what part I wanted. She told me that it was up to me to make sure the parts ordered were correct. At that point I stated that I had relied on the fact that they were the experts and my earlier emails had clearly stated that I needed an Exhaust seal.

I also asked that a one -time good will compromise be offered to me, to wit; an 8 dollar total fee ( shipping included ) for a 12 dollar part.




Her response, verbatim:


I did speak with John (Groenwold). His advice was based on your description of the part you needed. Without pictures of the gun and parts, it was his best guess based on your words. Since out website clearly shows pictures of all of the seals included in the kit, you should have been able to accurately pick out the one you needed. At this point, I suggest you just keep the seal you have, rather than sending it back and I will deduct the cost of $1.50 from your next purchase of the correct item which is DAI153469. The cost of the part is $12.00, which does not meet our minimum requirement on our website. So if you are agreeable to this, please remit $12.00 plus $5.00 for first class shipping or $8.00 for priority mail, less $1.50 to jgairguns@sbcglobal.net via PayPal and I will ship the correct part.

Heather




If the seals I have last another 20 years, I will be long dead before they need to be replaced. If not, I will return to JGAirguns to replace them. I hope they are still in business if I ever need them.

While most of the parts were correct, I give them one star, based on poor customer service.

This is NOT a customer friendly company!

P.S. I have retained ALL of the emails sent and received in case there is a rebuttal from JGAirguns that does not square with this account my review.

J.d.