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Diana20 T01
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Author:  sniper [ Sat May 26, 2007 1:34 am ]
Post subject:  Diana20 T01

It's nice to work on springer again, I haven't been doing springer for
at least over a year now and of course only my favourite Diana.
This D20 has been left alone for quite sometime now and finally I
got the time to work on it.

Image

Author:  sniper [ Sat May 26, 2007 1:35 am ]
Post subject: 

Like always any Diana is always a pleasure to work on and easy to
take apart.

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Author:  sniper [ Sat May 26, 2007 1:37 am ]
Post subject: 

My good ol' spring compressor is back to work .....
put a little pressure from the back to release the spring tension
so the pin would come out nice and easy.

Image

Image

Author:  sniper [ Sat May 26, 2007 1:40 am ]
Post subject: 

Boy talk about so much lube & oil ....
This was certainly dieselling.


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Author:  sniper [ Sat May 26, 2007 1:41 am ]
Post subject: 

Simple design of Diana20 T01 trigger but works very well ...

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Author:  sniper [ Sat May 26, 2007 1:47 am ]
Post subject: 

The old seal must have gone over thousands of pellets .....
It's about time to rejuvenate.

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while I'm at it, might as well change the breech seal too ....

Image

Author:  notec [ Sat May 26, 2007 12:58 pm ]
Post subject: 

Did you do any before and after chrony tests???

Author:  anthony [ Sat May 26, 2007 3:27 pm ]
Post subject: 

sniper, I've got a Diana 25 which I recently took apart but havn't put back together.

The seal is pretty damaged and I'd like to replace it. As well, the breech seal needs replacing. Where can I find these pieces?

Would you be able to atleast post a description for proper oiling as I'm sure this gun has not seen oil or lube in many many years.

Thanks a lot for your time.

Author:  Keyrigger [ Sat May 26, 2007 3:29 pm ]
Post subject: 

Since you have taken apart the rifle, is the seal synthetic or leather for both the piston and breach?

Author:  anthony [ Sat May 26, 2007 4:06 pm ]
Post subject: 

@ Keyrigger, to be honest I can't deterime it for sure. But if I had to guess both seals look closer to a leather than they do a synthetic.

Author:  novan3 [ Sat May 26, 2007 4:15 pm ]
Post subject: 

Maybe it's synthetic leather?!... :lol:

Author:  sniper [ Sat May 26, 2007 6:12 pm ]
Post subject: 

notec wrote:
Did you do any before and after chrony tests???


Yes, I did, I'll post some result later ....

Author:  sniper [ Sat May 26, 2007 6:28 pm ]
Post subject: 

anthony wrote:
sniper, I've got a Diana 25 which I recently took apart but havn't put back together.

The seal is pretty damaged and I'd like to replace it. As well, the breech seal needs replacing. Where can I find these pieces?

Would you be able to atleast post a description for proper oiling as I'm sure this gun has not seen oil or lube in many many years.

Thanks a lot for your time.


Hi Anthony,

Diana 25 was one of my most favourite, that was my first rifle when
I was 11 years old.
If you're near T.O, you can get it , no problem but otherwise you can
get them for all Diana parts at D&L airgun.

There isn't much to lube a springer except for:
The spring use JM tar or sometime I use slick50.
or Tamiya moly lube is good too.
around the seal use Feinwerbau grease.
I also use the moly on the trigger assembly and sear.
Also all the moving joints.
That's it.

Author:  sniper [ Sat May 26, 2007 6:36 pm ]
Post subject: 

Before replacing the seal and greasing was chrony at 420 fps - 440 fps
with 7 gr. hobby.

After replacing the seal and lube.

Original spring.

445 fps - 460 fps with baracuda 10.65 gr.
516 fps - 528 fps with xisico 8.6 gr.
580 fps - 600 fps with hobby 7gr.

I wonder if the performance will increase after about a couple hundred
shots .....

Author:  Parker_101_ [ Sat May 26, 2007 9:31 pm ]
Post subject: 

I have often used your pics and info as reference material when working on my goodies....
Thanks for posting that info sniper....

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