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working on the hammer valve-VIDEO UPDATE!

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Mon Mar 31, 2014 1:34 pm

jackssmirkingrevenge wrote:Good stuff! What distances were you shooting at?

As the barrel i brought was the cheapest posible (@ 0.8 euro /1m) it is also worst barrel posible , so i shoot only by 10 ..just to be sure i hit by 1st fire,,...with a decent barrel as i had before i could of do it by 20 m with no problem...
I use 0.25 g bb's
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Thu Apr 03, 2014 12:36 pm

Sorry for replaying but not editing,.. :albino:
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Last edited by bravootome on Wed Apr 16, 2014 4:01 am, edited 1 time in total.
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Wed Apr 16, 2014 4:00 am

why two bb's shot at same time hit the target , but one bb don't....
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bladeul2006 » Wed Apr 16, 2014 4:51 am

the initial force that pushes the bb, is transfered to the first one by pendulum effect, so the first bb has more force, than the second one. ( I hope I got it right :P )
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Wed Jun 11, 2014 10:46 pm

After shooting for a while i made it shoot well even with this aluminium cheap pipe. I guess if i use a better barrel the shoots should be lot accurate.. All the shoots were made by 40 m.
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Fri Jun 13, 2014 12:45 am

i did expected some feedback for my video..
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: jrrdw » Fri Jun 13, 2014 7:15 am

bravootome wrote:i did expected some feedback for my video..


If you really want to impress us put the 2nd shot through the hole the 1st shot made... :mrgreen:
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Re: working on the hammer valve-VIDEO UPDATE!

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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: wyz2285 » Fri Jun 13, 2014 7:48 am

Come on jrrdw, with 6mm ball bearings, assuming thats a A4 paper at 40m is bloody impressive for a home made smooth bore IMO, I couldn't have done better myself.
Try a cheap crosman barrel, 5.5mm. You should get a nice grouping.
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: jrrdw » Fri Jun 13, 2014 7:56 am

Hence a challenge is born!
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: wyz2285 » Fri Jun 13, 2014 8:00 am

Any rules? I mean I have parts made by CNCs for a while now also some nice barrels, I can quite easily assemble a PCP...
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: jrrdw » Fri Jun 13, 2014 8:09 am

wyz2285 wrote:Any rules? I mean I have parts made by CNCs for a while now also some nice barrels, I can quite easily assemble a PCP...


http://www.spudfiles.com/airsoft-pellet-guns/topic25884.html#p376828
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Fri Jun 13, 2014 11:26 am

jrrdw wrote:If you really want to impress us put the 2nd shot through the hole the 1st shot made... :mrgreen:


I only got 4 balls, that i reuse..and i wasnt able to hold the gun steady during the shoots. Any how there was 39 m, not 40 .
I ordered a steel pipe that i hope to do better . After each round of shoots ..the grouping gets worse ....
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: jrrdw » Fri Jun 13, 2014 1:37 pm

bravootome wrote:I only got 4 balls, that i reuse..and i wasnt able to hold the gun steady during the shoots. Any how there was 39 m, not 40 .
I ordered a steel pipe that i hope to do better . After each round of shoots ..the grouping gets worse ....


Gets worse? You must be putting flat spots on the balls when they hit the wood. You can probably get the size you're shooting by the hundreds really cheap from Ebay or a local gun shop for reloading supplies. Ain't airsoft bb's 1.00 for 100? They're 6mm correct?
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Fri Jun 13, 2014 1:45 pm

jrrdw wrote:
bravootome wrote:....

Gets worse? You must be putting flat spots on the balls when they hit the wood. You can probably get the size you're shooting by the hundreds really cheap from Ebay or a local gun shop for reloading supplies. Ain't airsoft bb's 1.00 for 100? They're 6mm correct?


Those "steel bb's" like umarex aren't steel, it's simple iron that get a flat surface even at impact with a paper ( i destroyed lots of barrels till i figured this out) . But 6mm steel ball bearings doesnt deform not even with impact with a computer case.
probably the aluminium pipe gets used after each shoot... i did had 1 pipe that could hit the same hole as you asked ( only tested it to 25 m) but i destroyed with those umarex reused bb's...
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Re: working on the hammer valve-VIDEO UPDATE!

Unread postAuthor: bravootome » Mon Jun 30, 2014 2:40 pm

jrrdw wrote:
bravootome wrote:i did expected some feedback for my video..


If you really want to impress us put the 2nd shot through the hole the 1st shot made... :mrgreen:


i may do it only with a video editor............ :lol:
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