mcarterbrown.com  

Reply
 
Thread Tools Search this Thread
Old 05-30-2013, 07:32 PM   #1 (permalink)
Post Whore
 
danssoslow's Avatar
 
Join Date: Sep 2011

cheap lower tube vanity cap for midblock/half block owners

So I was looking over my 2K5 Prostock which I'm going to have midblocked when Stanchy picks up work again; and was looking at how the the CCM frame's rear "snatch grip" like end transitioned into the lower tube. The entire body is very curvy with swooping lines, so the flat end of the lower tube without the backblock just appears out of place.

I set out to find a large button head bolt to somehow mount into place. The problem was that most ordinary button head bolts in a 3/4-16 thread has a very large head (>1"); and a 1/2" threaded shank would require some sort of thread adapter to screw into the lower tube (perfect head size, .875).

I had already purchased a cheap tap off of eBay, preparing to go through with the 1/2" option; and decided to surf the net one more time to find something that would work.

Low and behold, I found a cheap button head screw, in a 3/4-16 thread, with a head diameter of .875. Bonus, the part is anodized flat black aluminum, so the piece can be re-anodized in the future.

Part 814-8C

That's the cheapest I found it, before shipping. The part I ordered was $10.17 shipped from Good Vibrations Motorsports, if shipping from the above place is too high.


Well, here she is, inserted into the lower tube of the Prostock.




The rear hex takes a 3/8" Allen, so the hex is plenty wide enough to drill the hole necessary to access the IVG and not worry about goofing the hex's walls. The piece takes 3 turns to full insertion, so at this point it's kind of deep in the hole; but the solution should be easy. I'll post pics when that bridge has been crossed.
__________________
Quote:
Originally Posted by heinous View Post
when you're in the minority what you do gets viewed as what "your people" do.

why do you think i drive so carefully?



My feedback
danssoslow is offline   Reply With Quote
Old 05-31-2013, 10:52 PM   #2 (permalink)
Post Whore
 
danssoslow's Avatar
 
Join Date: Sep 2011

Tonight I was able to make the necessary changes to the IVG and cap to achieve what would amount to a "1/2 turn from flush" adjustment with a stock IVG.

I used a 1/2" drill bit to bore the inside of the IVG; then used a small Dremel barrel grinding stone to remove the taper made by the drill bit, making the "bottom" of the bore flat.



I trimmed the hammer side of the IVG back to avoid contact with the hammer if turning the IVG far in becomes necessary.



I cut back a bit of the threads on the cap. I left 1 1/2 turns of threading. Since the purpose of this piece is to be used as a port blocker on a fuel rail, it comes equiped with an o ring land behind the head of the cap. The o ring missing from the IVG in the second pic now resides on the cap. I'd say that the o ring should work pretty damn well to prevent the cap from backing out, as it adds quite a bit of resistance when tightening the cap.



After trimming the cap, it became unnecessary to drill a hole into the cap to access the IVG. There is just enough material left in there to keep the end of the 3/8" Allen key from sliding past the cap.




Here's a pic with the cap installed and the IVG backed up against it.

__________________
Quote:
Originally Posted by heinous View Post
when you're in the minority what you do gets viewed as what "your people" do.

why do you think i drive so carefully?



My feedback
danssoslow is offline   Reply With Quote
Old 06-01-2013, 12:15 AM   #3 (permalink)
Hesperia,ca
 
river031403's Avatar
 
Join Date: Feb 2012

Looks good. Questions, IVG bring trimmed down do you loose any integrity
__________________
Quote:
Originally Posted by tjd10684 View Post
It "feels" nice when you touch it
Quote:
Originally Posted by Loguzzzzzz View Post
Every hole costs money


http://www.automags.org/forums/showt...errerid=144073
http://www.mcarterbrown.com/forums/f...-feedback.html
http://www.pbnation.com/feedback.php?u=577553
http://feedback.ebay.com/ws/eBayISAP...val=0&items=50
Vertebrae autococker
http://youtu.be/Ybf2u4dAQlg
river031403 is offline   Reply With Quote
Old 06-01-2013, 12:16 AM   #4 (permalink)
A Little Grainy
 
Supergyro's Avatar
 
Join Date: Aug 2010
Location: Fargo, ND

That's some awesome work! Great job, it really brings that back end together.
__________________
My friend was killed by a throwing star but I live because of D'Eagle - Thalion
The visible spectrum is Rainbows! - Pirate
We're gonna need a bigger hopper - splattttttt
Supergyro is offline   Reply With Quote
Old 06-01-2013, 12:32 AM   #5 (permalink)
Post Whore
 
danssoslow's Avatar
 
Join Date: Sep 2011

Thanks guys.

Integrity, to be honest, I really don't know if will be bad. :s

I wouldn't figure it's bad. There's roughly .0780" of brass left back there; and the main spring is soft enough to collapse with two fingers (SLPS). When I get to dialing the gun in, maybe this weekend, I'll measure how close to full compression the spring is. I'd imagine if it went to full collapse and was a mech, maybe the force of the ram constantly pounding could blow the back out; but I truly do not know. This gun will stay a pump; but I wouldn't want someone to do this to an electro or mech if it would screw it up.
For the sake of experimentation, I can beat this one with a drift pin and hammer and see if it takes much to blow that back out. I always have another IVG I could bore out less.

Although, if someone more knowledgable could make a comment and save me some time, that would be awesome!
__________________
Quote:
Originally Posted by heinous View Post
when you're in the minority what you do gets viewed as what "your people" do.

why do you think i drive so carefully?



My feedback

Last edited by danssoslow; 06-01-2013 at 12:44 AM.
danssoslow is offline   Reply With Quote
Old 06-01-2013, 08:21 PM   #6 (permalink)
Banned
 
Join Date: Aug 2007

Posted reply in your airsmiths forum thread regarding integrity... you have nothing to worry about.
ApoC_101 is offline   Reply With Quote
Old 06-01-2013, 09:31 PM   #7 (permalink)
Post Whore
 
danssoslow's Avatar
 
Join Date: Sep 2011

Thank you x10!!!
__________________
Quote:
Originally Posted by heinous View Post
when you're in the minority what you do gets viewed as what "your people" do.

why do you think i drive so carefully?



My feedback
danssoslow is offline   Reply With Quote
Old 06-05-2013, 09:32 AM   #8 (permalink)
I am stuck on bandaid...
 
JaKaL's Avatar
 
Join Date: Apr 2006
Location: Orlando, FL

Yeah, what's the WORST that could happen? A spring pops out? Hard to get the busted part out? MAYBE screwed up threads in the gun.

I don't see any DANGER there.
__________________
...'cause bandaid's stuck on me!
JaKaL is offline   Reply With Quote
Reply

  mcarterbrown.com » Paintball » The Armory » WGP

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -4. The time now is 02:11 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO
© MCB Network LLC