Canadian Airgun Forum

Okay I picked up a medalist from a bud that was shooting weak! i said yeah i can fix that (solved this problem on 4 different guns since february lol) and weak i mean 200fps weak on 10 pumps! ive swapped every single part on this gun and still cant get any power it feels like it only takes 1 pump and nothing else, ive swapped main tubes, seals, valvestems, check valves... and still same results! what the heck am i doing wrong? i think i have the right size seals but cant see this problem being from anything else! im very frustrated and seems this gun is fubar'ed yet im determined to solve this problem! i have limited o-ring sources around here so im hoping im just doing something wrong lol

Thanks yall your input is much appreciated!

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It's better to die quick fighting on your feet, then to live forever begging on your knees - Lamb Of God

Hard to tell what could be wrong with it if your saying you've changed most of the stuff out and its still shooting low fps .
Check your pm

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"A candle loses nothing by lighting another candle"

i think i may have used all my 13xx orings and perhaps a new'er pump cup is in order?! i just dont know ive literally tried EVERYTHING including tubes (1322 to a 2289 tube) and nothing seems to work!

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It's better to die quick fighting on your feet, then to live forever begging on your knees - Lamb Of God

Swap the entire valve and put on a new pump cup- complete valve is $12.00, pump cup seal is $2.00- likely not a 'bank breaker'.

The idea of spending hours and hours to save $15.00 in parts may not be terribly worthwhile unless someone has alot of free time.

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Please note: I do not conduct business through Private Messages (PM's) in online forums. Please do not send a 'PM" with a business-related question.

Check you have the right springs for the hammer and the valve.

i think your right Eric i gota pick some parts up off ya anyway lol

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It's better to die quick fighting on your feet, then to live forever begging on your knees - Lamb Of God

I would start with the pump cup they seam to harden up and loose there flexibility to seal against to tube and are the first thing to go on these pumpers.

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"A candle loses nothing by lighting another candle"

Only one pump velocity is caused by the check poppet not sealing. It's a brass valve, so clean the seat area, and clean or replace the poppet. The early poppets used an O-ring for the seal. Replacing the early type with a Teflon later type cures most check problems.

ive swapped the brass valve with a aluminum valve to see if it was the valve perhaps the pump cup route is the way to go lol i have 3 but im guessing they are all fubar'ed

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It's better to die quick fighting on your feet, then to live forever begging on your knees - Lamb Of God

Pump it a few times then open the pump lever all the way.
Dry fire it,(unloaded/safe direction}. If it does nothing your check valve is bad/in wrong.

Transfer port in the right way??

Sorry to leave yall hanging but i did manage to get her firing took every rough edge in the maintube off and bought a boatload of the CORRECT size o-rings and now all is well think i may have mixed up a few sizes in my box and "assumed" they were still all correct complete DUH moment at its finest but thank yall very very much for the input!!!

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It's better to die quick fighting on your feet, then to live forever begging on your knees - Lamb Of God

My question to this thread is, If your going to rebuild an airgun. Why would you not replace all the components that wear, ie orings, pump cups and such to begin with?

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May the cry of the pack be with you upon your hunt

Whitewolf

He did Kim, he just admitted he mixed up the o-ring for the correct size thus the reason it didn't hold pressure

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"A candle loses nothing by lighting another candle"

Yes read that. Was just caught reading the time lines. 3 days to deduce pump cup, and reported 26 days later of an oring. Just throwing it out there, would not a set of calipers and doing a few minutes of measuring have saved a world of time.. Just wondering.

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May the cry of the pack be with you upon your hunt

Whitewolf