GTA

Airguns by Make and Model => Feinwerkbau => Topic started by: Regulatori on April 22, 2015, 06:15:36 AM

Title: Maccari Actic Spring for FWB300S? Update: ARH has the them available again!
Post by: Regulatori on April 22, 2015, 06:15:36 AM
Jim was going to do another batch but that's going to be postponed of course due to his health conditions. Let's just hope he makes a full/speedy recovery.

I totally understand the 300S is a 10m rifle and will never be a magnum but I'm hoping to get around 675fps with 7.5-8gr pellets. I talked to Jim about 3 weeks ago and he expected the new Arctic Spring to do mid to high 600s with 7.7gr pellet which is the exact range I'm looking for. If I cab get 8.44gr JSB's to be in the 625-ish range, I'll be happy.

In the mean time, I would like to try some other springs until the Arctic springs become available.

Does anyone have an Arctic spring outside a gun that they could measure for me? I would love to know the OD/ID, total length, and coil count. That way I'll see if any of the Titan XS or similar springs could possible be cut down (and yes, I understand the steps of cutting down a spring/heating the end/flattening, etc..)

I've also a lot of great things about the Merlin springs that JM used to make too. Again, it's difficult to find any information regarding dimensions/coil count, etc..

Any help would be appreciated. Thanks.
Title: Re: Anyone have a Maccari Actic Spring for a FWB 300S laying around for measuring?
Post by: anuthabubba on April 22, 2015, 10:06:48 AM
Not sure it's an Arctic spring but I have one of Jim's 300 springs that I'll measure/count later today.
Title: Re: Anyone have a Maccari Actic Spring for a FWB 300S laying around for measuring?
Post by: Regulatori on April 27, 2015, 06:19:33 AM
Just giving the thread a bump. Yrok did help me out but we're not sure if it's an Arctic spring.

If anyone is positive they have an Arctic spring or any other aftermarket 300S spring that's given them good results, please post the name/specs. Thanks.
Title: Re: Maccari Actic Spring or other aftermarket spring for FWB300S? Need measurements.
Post by: ptpalpha on April 27, 2015, 06:32:10 AM
I've got an Arctic that is 28 coils of .110 wire, 9.5" oal (set) with a .554" id.
Title: Re: Maccari Actic Spring or other aftermarket spring for FWB300S? Need measurements.
Post by: Regulatori on April 27, 2015, 03:27:23 PM
Thanks a lot!
Title: Re: Maccari Actic Spring or other aftermarket spring for FWB300S? Need measurements.
Post by: limbshaker on May 14, 2015, 01:43:00 AM
Just saw this on Jim's site under "Today's Specials"

New 5-6-2015

 

Arctic  custom mainspring- tighter fit- smoother performance.

Replaces the two spring setup to one on the later 300S models

31 coils x .105 wire.

I know this thread is kinda old, just happened to remember seeing it here...maybe it will help.
Title: Re: Maccari Actic Spring or other aftermarket spring for FWB300S? Need measurements.
Post by: YEMX on May 14, 2015, 04:36:08 PM
I just put an order in for one, I'll pm info when it comes in!!
Title: Re: Maccari Actic Spring or other aftermarket spring for FWB300S? Need measurements.
Post by: YEMX on May 18, 2015, 11:14:28 PM
Not sure of spring thickness, 31 coils, 9.5" long.  I received my JM Arctic spring today!!
Title: Re: Maccari Actic Spring or other aftermarket spring for FWB300S? Need measurements.
Post by: ac12 on May 19, 2015, 12:11:02 AM
As I recall, FWB went from single spring to the dual springs to reduce torque when the rifle fires.
So this is going back to the single spring.
Title: Re: Maccari Actic Spring for FWB300S? Update: ARH has the them available again!
Post by: Regulatori on May 19, 2015, 04:12:18 PM
Nice...I had no idea ARH had them again until I saw this thread. Jim has helped me out a bunch with questions and I knew he was putting out another run....but figured they would be on the backburner due to the medical issues.

Just ordered an Arctic spring. I have a spring coming from Gotha so I'll be able to do a side-by-side comparison of the two.