Author Topic: Synsg chrono test and breech seal replacement  (Read 419 times)

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Offline Baggawind

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Re: Synsg chrono test and breech seal replacement
« Reply #10 on: March 24, 2018, 09:58:13 PM »
This week I did a full short stroke conversion on my mates 208 using an Aussie seal. I,d already done it to my 208 and he liked the way it performed. Like yours, the seal didn,t need sizing. I reduced the stroke down from 88mm to 80mm, made new guide and top hat and applied very little grease. This resulted in a power output of only 10 fpe. There,s loads of space inside the piston to allow for packing, which is what I did. Including the top hat flange, the packing came to 4mm. This upped the power to 11.5fpe. And is very smooth to shoot. IIRC the spring is 3.05 mm section by 25 coils. That,s a compressed length of 76.25mm. Even with the packing the spring is nowhere near coil bound so you have plenty of space to play with. My advice is to get some power washers 3mm thick and gradually pack the spring out until you reach the required power. If you like I could make some for you , FOC. Pm me and i,ll send you some.

Offline svendogg

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Re: Synsg chrono test and breech seal replacement
« Reply #11 on: March 24, 2018, 11:25:26 PM »
Very kind of you baggawind, pm coming your way

Offline Gambo

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Re: Synsg chrono test and breech seal replacement
« Reply #12 on: March 25, 2018, 11:28:20 PM »
A very kind offer Mel. 8)

Applauded ;)

Offline IceBlerk

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Re: Synsg chrono test and breech seal replacement
« Reply #13 on: March 26, 2018, 10:39:08 AM »
This week I did a full short stroke .........

Nothing to say about that, Gambo?
Easy Money

..........so I packed up and went to the pub.

Offline Baggawind

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Re: Synsg chrono test and breech seal replacement
« Reply #14 on: March 26, 2018, 02:45:17 PM »
Just spotted my mistake. The total packing came to 10mm not 4. Sorry  ::)

Offline Gambo

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Re: Synsg chrono test and breech seal replacement
« Reply #15 on: March 26, 2018, 04:15:22 PM »
This week I did a full short stroke .........

Nothing to say about that, Gambo?

Missed that one!!!


Maybe you ought to put yerself forward as an OPAM-QS? ???

(Official Planet Airgun Mis - Quote Spotter)

Offline IceBlerk

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Re: Synsg chrono test and breech seal replacement
« Reply #16 on: March 27, 2018, 09:34:30 AM »
Maybe you ought to put yerself forward as an OPAM-QS? ???

(Official Planet Airgun Mis - Quote Spotter)

Ooh! I like ANY title with "Official" in it.

Will I get a badge?
Easy Money

..........so I packed up and went to the pub.

Offline Baggawind

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Re: Synsg chrono test and breech seal replacement
« Reply #17 on: March 27, 2018, 10:57:05 AM »
I reckon you guys should form a boy band called TWISTED MINDS. 

Offline IceBlerk

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Re: Synsg chrono test and breech seal replacement
« Reply #18 on: March 27, 2018, 11:06:40 AM »
A band reformed from the members of Simple Sister?
Easy Money

..........so I packed up and went to the pub.

Offline Gambo

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Re: Synsg chrono test and breech seal replacement
« Reply #19 on: March 28, 2018, 07:24:59 PM »
That means one of us will have to be Dee Snider, and the other Jim Kerr. :-\ :-\