View Full Version : Newby builds a Custom '04' Imagine

05-03-2007, 11:35 AM
New to this forum, lots of great info and general reading.

Over the past month or so I have been doing research on the vast range of mods one can do to a spyder .... For a cost :cool:

My back ground is being a machinist & small engine mechanic, so the mechanics of the gun and ability to make custom parts were within my grasp. I am just sharing what one can do with some time and materials building a custom gun.

*** Will post some pics of my Imagine soon as I get them taken ***

#1 Machined my own high flow Anti-chop delrin/mds nylon bolt with o-rings & contoured face.
#2 Machined a custom delrin Velocity adjuster back plate/cover.
#3 Machined a mds nylon field strip pin
#4 Machined a custom delrin trigger (No wobble & Very light weight)
#5 Modified a Rat shack switch to trip at @ 55 grams and have VERY short reset travel.
#6 Modified stock valve & pin, VA & LPC

Added a Palmer male stablizer, Drop forward with on/off ASA, macroline fittings & a CP 14" one piece classic barrel, CCM feedneck & 32 degree spring kit.
*Light spring for trigger reset (Ball point pen)
*Polished striker, Sear & valve pin.

** Total "Out of Pocket" cost @ $200 w/o gun.

:p What I ended up with is a gun that recocks at 275#, shoots 290fps at 325#'s

Does NOT chop paint at high ROF and has IMO very low vibration.

From what I read, thats not to shabby for LP operation on CO2.


05-03-2007, 11:42 AM
Welcome to SOC. Glad you were able to get on and post. Cant wait to see the pics of your marker.

05-03-2007, 11:42 AM
Welcome to the forums.

Do you have pics of the parts?

05-03-2007, 11:51 AM
Welcome...can't wait to see pics.

05-03-2007, 08:33 PM
http://img163.imageshack.us/img163/500/pbg003nv0.th.jpg (http://img163.imageshack.us/my.php?image=pbg003nv0.jpg)
This the complete gun minus barrel. (notice billet delrin ASA on/off knob )

http://img122.imageshack.us/img122/6809/pbg002tg5.th.jpg (http://img122.imageshack.us/my.php?image=pbg002tg5.jpg)
My hybred no-chop bolt (Own design) with o-rings. Delrin & MDS nylon. Weight @ 1/2 of the stock one.
http://img256.imageshack.us/img256/6734/pbg010kx0.th.jpg (http://img256.imageshack.us/my.php?image=pbg010kx0.jpg)
Bolt face looking down feed neck. Face of bolt has a smile cut that lines up with edge of neck hole when gun is fully cocked allowing ball to drop in perfectly vertical against stop detent.
http://img115.imageshack.us/img115/9837/pbg006lv2.th.jpg (http://img115.imageshack.us/my.php?image=pbg006lv2.jpg)
How ball looks resting against bolt face.

http://img329.imageshack.us/img329/9751/pbg004mu0.th.jpg (http://img329.imageshack.us/my.php?image=pbg004mu0.jpg)
Billet Delrin velosity adjuster body, bolt cover & MDS nylon quick pin.

http://img267.imageshack.us/img267/9016/pbg005pf8.th.jpg (http://img267.imageshack.us/my.php?image=pbg005pf8.jpg)
Billet delrin 2 finger trigger ( total travel to activate switch & reset @ .040" )

** My project so far ... been fun :D

;) More internal parts R&D ... http://www.spyder.tv/forums/showthread.php?t=10789

05-03-2007, 09:07 PM
whoa. so, how well does your antichop work? (compared to the stock antichop bolt, if you've used one before)

man, you're one seriously awesome guy making all those parts. I bet there are some people here that would be interested in your custom parts

05-03-2007, 10:07 PM
Not bad! :waytogo: Welcome to the forums! Looks like you'll fit right in with us tinkerers here with your custom works. I assume by MDS you mean "medium density strength," right? Looks like you prefer to use it in the place of delrin, nylatron, and the like. Is there any particular reason why except the ease to work with it? (hear that one too often...)

Where in Nor Cal do you live, by the way?

05-03-2007, 10:15 PM
No, actually "MDS" nylon is a molybdenum disulfide fortified nylon rod.

It has VERY high self lube properties, Very high impact resistance and is a PAIN IN THE ASS to machine :( .... It burrs on every cut edge unless using razor sharp tooling.

Live by Sacramento.

Folks typically use "Delrin" because it machines like butter !! and has less swelling with humidity while being self lubricating.

Delrin while neat stuff does not fair well when used structurally, for it's more brittle than the nylons.

*** Anti-chop bolt was the result of brain storm after fiddling around with a kingman POS anti-chop unit.

Anti-chop is probably not a accurate description .. actually more of a "Anti-Stick" bolt as it is in picture.

When fiddling around with the concept, when spring pressure within bolt was light enough so a pinched ball would not get cut (chopped), when gun would fire the outer sleeve of bolt would actually slide backwards opening bolt to feed neck before striker would draw back entire bolt ... BAD :mad:

So within my design I reworked the ball end of bolt so ball would be VERY supported as it came down feed neck. Lengthened the bolt at ball end so the sides and bottom of bolt were into the feed hole when cocked, with a arched top section allowing ball to fall perfectly flush with bolts profiled face. This places ball perfectly against detent without compressing it.

** The spring loading of bolt was stiffened back up to prevent blowback and now only gets compressed if you actually pinch a ball and break it.
rather than bolt getting totally jammed up from balls broken shell, bolt is easily drawn back to recock and allows a fast easy squeegee out.

So far in @ 3000 balls, have yet to break one now with this setup ... good :)

Oscum Guy
05-04-2007, 11:22 AM
wow, that bolt is niiice! good job!

05-04-2007, 12:14 PM

05-07-2007, 04:28 PM
Humm so what kind of tooling were you using... HSS or Carbide...? Also what speeds and feed were you using to cut this stuff?... Lastly was this Manualy Machinied or CNC'd?

BTW i am a machinist as well LOL...

Hob Hayward
05-07-2007, 05:35 PM
Wow, thats some cool stuff. I know people would be interested in buying parts from you, if you were willing to sell them :P.

05-07-2007, 08:25 PM
Parts made on my manual machine using HSS tooling and modest spindle speeds for O.D. turning, slow for boring & drilling.

Delrin is super easy to work with, nylon however is more like working brass ... it sucks (A machinist knows the term well)

Thanks for the kudos .... just sharing the project, no desire to sell parts :cool:

05-08-2007, 06:26 AM
again, welcome to the forums, and good workings with the 'Magine