Author Topic: XS60C PCP Repeater project (Read 455710 times))

rsterne · « **Reply #180 on:** March 18, 2014, 02:57:37 PM »

I have been offering some help regarding the safety of this and other designs on this and other Forums on the Internet, and I just want it to be understood that I am NOT an engineer, I am simply offering my opinions about the loads involved and the potential problems and pitfalls of given designs and applications.... You are on your own in regards to safety on any modifications to any airgun or pressure vessel....

Bob

avator · « **Reply #181 on:** March 18, 2014, 03:16:27 PM »

As a newb to the whole PCP concept in airgunning, I have followed your posts Bob, and I am completely convinced that you have probably forgotten more than I will ever even know about the technology and the safety concerns. I would never even consider going above what you suggest as the safety margins of this or any other gun. Thank you for getting involved and giving your expertice so freely.

stalwart · « **Reply #182 on:** March 18, 2014, 03:51:19 PM »

+1... and then some.

stalwart · « **Reply #183 on:** March 22, 2014, 03:27:37 PM »

Plugging along here... quick status update for repeater guys: The bolts are cut, will be doing noses and a massive Teflon run (S1s too) this weekend, weather permitting. Barrels are still coming in, hope to do them all by next weekend (remember... no promises!). Anything not here by about Thursday, will have to wait for next run.

Got a shipment I plan to use to speed things up, from now on. The rough cut slot is good for all variants, as is the bolt base mod, so I will be doing both in advance as soon as these first rigs are shipped. From then on, any orders will have the barrels cut, and the bolts and receivers replaced with pre-prepped parts... and they will be shipped asap. As the barrel is the only unique part (accuracy wise), this will mean nothing but quicker turn-around. And, in the future, I will be offering drop in kits for those in a real hurry.

I am also putting together a larger coating oven, to allow much larger batches, as well as coating larger parts. The intention is to offer better deals (and more options) on coatings. Thanks to the response from you fellas, I feel more than safe in investing much more in this AG thing.

stalwart · « **Reply #184 on:** March 29, 2014, 08:26:27 PM »

Another update:

Barrelpalooza is proceeding as planned. All the repeater conversions are cut and ringed, and I'm now setting the barrels. Epoxy is hardening as I write. If you will need mags, you might want to get them ordered.

silent_airman · « **Reply #185 on:** March 29, 2014, 10:08:53 PM »

Quote from: stalwart on March 29, 2014, 08:26:27 PM

Another update:

Barrelpalooza is proceeding as planned. All the repeater conversions are cut and ringed, and I'm now setting the barrels. Epoxy is hardening as I write. If you will need mags, you might want to get them ordered.

Got 2 waiting!

stalwart · « **Reply #186 on:** March 30, 2014, 02:48:28 PM »

Only 2??

silent_airman · « **Reply #187 on:** March 30, 2014, 02:53:58 PM »

Quote from: stalwart on March 30, 2014, 02:48:28 PM

Only 2??

Maybe I should rephrase that to the first 2 lol.

stalwart · « **Reply #188 on:** March 30, 2014, 02:55:51 PM »

There ya go!

silent_airman · « **Reply #189 on:** March 30, 2014, 03:51:00 PM »

Quote from: stalwart on March 30, 2014, 02:55:51 PM

There ya go!

Good thing they are cheap and plentiful.

stalwart · « **Reply #190 on:** April 04, 2014, 09:02:58 PM »

Last update for the Bobcat guys:

Got some legs under me, and finished off the first batch. They will come with 2 extra o-rings (009) slid on the bolt. The noses are fitted and polished... 2 should be a lifetime supply. A drop of oil once in a while should make the spares unnecessary for quite a while.

Also, I hate sloppy mags, and I fitted these precisely. If you plan to paint, be sure to mask off the mag well. Chemical treatments add no thickness, but any finish with a heavy film will cause problems with fit. I suggest polishing the well with Simichrome or similar to make it pretty and easy to clean.

I experienced zero nagging with this batch. The first guys to risk their money on this have paid for all the tooling and refinement needed to make this process easy and reasonably fast for the next buyers. I want to thank the brave ones for their patience.

As with my pistols, the first to take the chance will get $pecial treatment in my shop from now on. Let me know if you guys need anything.

Thanks again, guys.

rewinder · « **Reply #191 on:** April 05, 2014, 12:18:39 PM »

thanks for the update

silent_airman · « **Reply #192 on:** April 05, 2014, 12:31:35 PM »

Quote from: stalwart on April 04, 2014, 09:02:58 PM

Last update for the Bobcat guys:

Got some legs under me, and finished off the first batch. They will come with 2 extra o-rings (009) slid on the bolt. The noses are fitted and polished... 2 should be a lifetime supply. A drop of oil once in a while should make the spares unnecessary for quite a while.

Also, I hate sloppy mags, and I fitted these precisely. If you plan to paint, be sure to mask off the mag well. Chemical treatments add no thickness, but any finish with a heavy film will cause problems with fit. I suggest polishing the well with Simichrome or similar to make it pretty and easy to clean.

I experienced zero nagging with this batch. The first guys to risk their money on this have paid for all the tooling and refinement needed to make this process easy and reasonably fast for the next buyers. I want to thank the brave ones for their patience.

As with my pistols, the first to take the chance will get $pecial treatment in my shop from now on. Let me know if you guys need anything.

Thanks again, guys.

Good things come to those who wait!

stalwart · « **Reply #193 on:** April 06, 2014, 11:19:05 PM »

Got the 'cats on the way, so I had a little time for the 3K... set the tube in deep enough to provide an excess of backup for the (2) 1/4" screws that will be going into the sides.

It will need to be cut for the slot clearance and have a flat cut to clear the mag, but this looks like a viable set up.

stalwart · « **Reply #194 on:** April 07, 2014, 12:33:05 AM »

For an adjustable depth striker (or block), what would be the max useful distance (+ and/or -) from stock?

Bill L. · « **Reply #195 on:** April 07, 2014, 01:41:19 AM »

Quote from: stalwart on April 06, 2014, 11:19:05 PM

Got the 'cats on the way, so I had a little time for the 3K... set the tube in deep enough to provide an excess of backup for the (2) 1/4" screws that will be going into the sides.

It will need to be cut for the slot clearance and have a flat cut to clear the mag, but this looks like a viable set up.

Are you connecting the valve to tube so there is no pressure in the breech?

stalwart · « **Reply #196 on:** April 07, 2014, 02:26:35 AM »

Yes. All the pressure is contained by 1 piece of full thickness steel. As Bob mentioned, I'll have to take just a few thou off the ODs of the block and valve to get them to slide in the tube. The block will get pinned by 2 more fasteners, and it and the valve will mount with the stock hardware... which will then also mount the tube.

I bounced a lot of different configs off Bob... he was very patient with me... and ended up working with his recommended fasteners plus the stock hardware.

Bill L. · « **Reply #197 on:** April 07, 2014, 03:58:56 PM »

I was thinking along this line but using a short tube and a JDS drop block for a 13cid Tank.

stalwart · « **Reply #198 on:** April 09, 2014, 09:38:32 AM »

Refined the receiver design a bit...

Extended the tube to function as a sleeve to allow the striker and the pin to ride in precise polished steel, instead of painted aluminum. I'll use slip coating on the striker to get the most and the most consistent speed. If your pin is riding in a jagged slot (or is busy making itself one), you'll see why the first Bobcat customer I showed this to has delayed shipment while I set his up to stop chewing on itself.

stalwart · « **Reply #199 on:** April 09, 2014, 11:24:54 AM »

It didn't even occur to me when I cut the excess off the receiver I would end up with matching barrel bands.

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XS60C PCP Repeater project

Author Topic: XS60C PCP Repeater project (Read 455710 times))