Millennium Pumper Production - *The Beginning* - And The Lousy End

[CarsonRatSniper]

Today all of the barrels & the fill nipples were delivered!

Just waiting on Crosman delivery for tubes, hammers, RVA's, triggers, etc...

Here's an assembled manifold (minus the gauge - its on the rifle at Jim's). I glued the bulb in with Marine Tex after a 60 second chemical bath of the parts for degreasing...its *permanent*.



Teflon rod is here on Tuesday...at least when that shows up now I can tether the gun @ 1800 psi and do some tuning work!

The screw on cap has an o ring recessed that seals the nipples face...that's where the pressure/leaky nipple/cap removal came from on the review of the Bob Long fill nipples.
I'm leaving any cap mods up to the owners...

They were worth the $20 each!

Slow progress but progress nonetheless!

Mike

[CarsonRatSniper]

***Update***

Today I got to tether a Millennium powerplant @ 1800 psi. I got my Teflon rod and made a transfer port on the lathe.
I hit 892 fps with a King and 730 fps with a 37gr slug. What a difference a tight seal makes!

Remember guys, I'm using a 54 gram Prod hammer that has had the hole in it bored out to .375" to accommodate the .360" OD hammer spring I'm using...I have no idea what the hammer/cocking knob (a steel bolt handle for now) weighs.

I'm trying heavier hammers tomorrow to see what I get.

Here's a pic with the temporary factory top end I have on it...



More to come tomorrow evening.

Mike

[YEMX]

Lookin' good Mike!!!!   

[CarsonRatSniper]

Today I tried a heavier hammer...I got 930 fps from a King & 800 fps from a 37gr slug.

Once I have a smaller diameter poppet to put in the valve I will try again.
We may end up making our own RVA's to accept a 2.3" QB spring as Bob suggested. I have one of Roy Weids brass Power Caps on my 22xx I'm going to try too - its much longer than a stock Crosman RVA.

I'm getting there guys! This is good information anyway as I can offer advice on achieving a specific tune condition for a given projectile weight/spring combo.

More to come soon


Mike

[dyotat100]

How long is the barrel?

[CarsonRatSniper]

The one on there now is 26" long...its not our custom top end and I'm using a factory barrel band so it makes it difficult to ensure the transfer port has the correct amount of crush on it...I have to roll the barrel/breech over and onto the TP with the barrel band only inches in front of the breech. It is difficult, but not impossible.
The production barrel band will have recess grooves that allow the band to slide over the heads of the check valve screws protruding from the tube so it can be moved farther forward and allow for a higher angle of tilt over the TP for accurate placement.

I still think I need a bit more crush on the TP...and the barrel I'm using doesn't have the proper 5/16" flat milling at the TP...the *true* numbers will be when I'm testing with a Millennium top end.

These are just preliminary testing results...when Jim is finished on another job he is working on in about 2 weeks (and we have ALL of our parts here) the shop will be dedicated to the Millennium builds.

Prototyping doesn't pay his bills! That's why we can't spend too much time developing one little part at a time - it needs to be when we are in full production mode.
You know how that goes

Mike

[c670809]

Quote - "Prototyping doesn't pay his bills! That's why we can't spend too much time developing one little part at a time - it needs to be when we are in full production mode."

I'm not sure I understand. It would seem like it would be much cheaper to work out all of the details with one rifle and then make all of the components correctly. Making 10 of something and then needing to do it again because it didn't work like you expected the first time doesn't sound cheaper or better.

What am I missing?

[rsterne]

You are probably missing the fact that I already did a prototype, and 99% of what they are doing is simply producing parts to assemble them as closely as possible to the prototype....

http://www.gatewaytoairguns.org/GTA/index.php?topic=39328

Bob

[CarsonRatSniper]

We used a Disco poppet & the hole in the rear of the valves was drill at 5/32" for it...the Mrod poppet is a better choice and sleeving it with a bushing is super easy so it accommodates the 1/8" Mrod poppet.
Everything else has been machined to Bobs specs of his original build...I will elaborate more later tonight.

Mike

[c670809]

I just read my post again and realized that I might have come across in an argumentative manner. I wasn't trying to, I was genuinely curious. I apologize if I came across wrong.

Thanks for your answer. I appreciate it.



(edited for spelling)

[Hanabata808]

The more I read on this project, the more excited I am for the next update! 

[jvanschoonhoven]

Hanabata808,
Im one of the ones on the list for the first 10 and im sure they will be amazing. Ive dreamed on a gun like this for awhile

[CarsonRatSniper]

Jeremy, I think Larry has #2 or #3!



I got 3 stocks today!!! I'll post pics later tonight when I get home.

Mike

[Augydogy]

OK, did I miss the sign up list?!   

[CarsonRatSniper]

These are *production * guns now...we are doing them in runs of 10 rifles.

I will announce when the next batch is being prepared for building and take payment/caliber/stock  color at that time.

Our turnaround time after this first run should only be 30 days as long as all of my other vendors are good to go.

I expect the next list to start mid to end of February.

Thanks!

Mike

[YEMX]

Congratulations to you and Bob! 

[Tater]

Yes, congrats Mike. Can't wait to see pics from happy owners in the hunting thread.
I'm glad I followed this project from first few threads, can't afford one but it's fascinating to see them come to life.

[CarsonRatSniper]

Thanks Guys!

Here's what I got today from Norm @ Discos R Us...2 Pepper & 1 Nutmeg.
They obviously still need to be finished with polyurethane but them look *GOOD*!





I will post a pic of one on a powertrain tomorrow.

Mike

[MRT949]

Gook looking stocks.

[YEMX]