Gamo S1K Spring

[Wallis]

Hey guys,

do anybody know where I can get a spring for the shadow 1K. My friend has broken his in 4 places. Dont ask me, I just look at them. Should I go thru gamo or JM for the spring


any ideas

[DAMAGE]

You should ask your friend how he broke the spring as it could be a lesson to learn
Cant help ya on where to get a spring though sorry not from this side of the world anyway.

[vinceb]

Gamo won't sell the spring, I've tried several times.

You CAN get a Crosman Quest spring for about $5.00, that works just fine IF you get the Crosman Quest tophat as well (about $3, if I remember). The part numbers are C1K77-010 for the spring, C1K77-005 for the tophat, and C1K77-002 for the seal if ya wanna do that too. Crosman's phone number is 1-800-724-7486.

I put these parts in my Shadow, and had a pleasant surprise waiting for me... the Quest spring was a little smaller in diameter than the original Gamo spring, and it fit rather tightly on the guide. NO TWANG! Performance is in the 890's with CPL's... a little shy of a good OEM spring, but I'm not complaining.

To be honest  the  Quest spring is just a little bit stronger than the Gamo spring.

Gamo spring 72.8 lbs/in
Quest spring 78.2 bls/in

So if you compress a Gamo spring 1 inch it has 72.8 lbs energy the stroke on a Gamo is about 4 inches, you get about 291 lbs of pressure.

[vinceb]

Glad to see someone is using it!

Yes, according to my calculations, the Quest spring rate is a little higher. My Quest (after installing a new factory spring - the original was crunched) will touch 940 with CPL's, which is better than I've seen on a stock Gamo. When I swapped in a B-19 .22 cal barrel, it would touch 750 with 14.3gr Gamo Match pellets.

Oddly enough, my Gamo started shooting out about 10fps better than it did with a stock spring... but it has since slid a little bit. I do suspect that the spring finally took a "set" a bit shorter than it should have... someday, I'll measure it.

If switching to a Crosman spring/tophat combo eliminates spring twang and keeps performance around the same, what would be the benefit to switching to the JM spring then??
I had purchased the JM spring for that same reason....now I'm second guessing myself.

The JM spring has a rate of 101.7 lbs/in and is a high quality spring that will keep it's power for a long time.

Where do you guys find these springs at?

http://www.airguns.citymax.com/page/page/251327.htm

Here's the web site for Jim Maccarri.

[vinceb]

than either the Quest or Gamo spring. It is also (undoubtedly) made to higher QC standards than the Chinese spring.

HOWEVER - Macarri himself does not recomment this spring as a drop-in replacement for Gamo's (if it's the Tarantula spring that I'm thinking of). The spring has a larger ID and is a looser fit on the stock Gamo guide thant the Gamo spring (which is already pretty loose) - and it is recommended that a thicker guide be used.

For a minimum-hassle drop-in replacement the Quest parts are a decent bet, but for complete rework and reguiding the Macarri parts are to be recommended.

Yeah, I purchased a spring guide kit from Rich (peterdragin) that is made to the spec's of the JM spring.  Other than cutting the  original main guide down a bit, it is basically a drop in mod.  I haven't been able to get this project going......between work and other "need to do" odd's and ends.  I want to set aside a full day or two and take my time to do it right.

[DAMAGE]

What Crosman Quest are you talking about is it the Quest 1000 cause my shadow spring broke last night and need to replace it but wouldnt if its the Quest800 please help :0

[vinceb]

The Quest 800 is merely the .22 version of the Quest 1000 (at least in the US), so the internals ought to be the same.

It's a moot point anyway, because Crosman told me that they no longer carries parts specific to the Quest 800.

The part numbers I quoted in my other post are for the Quest 1000 parts, which are comparable in performance to the original Gamo 1000 pieces.