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Unread postAuthor: jackssmirkingrevenge » Thu Jan 17, 2013 1:48 am

Looks like it's as simply as that, spigot mortar style inner barrel. Not a new idea of course, these have been around for decades: http://www.swivelmachine.com/index.htm

Cool setup I have to say:

[youtube]http://www.youtube.com/watch?v=yIb56PQwIfE[/youtube]

Pretty inefficient when you think about it though, they say around 280 fps and 42 ft lbs, which gives an arrow weight of around 250 grains... not exactly spectacular performance.

Of course when you're using an inner barrel, there's much less surface area for the air to push on, even though the pressure levels are very high. I suppose the trade off is that it can be more accurate and consistent.
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Unread postAuthor: mark.f » Thu Jan 17, 2013 12:36 pm

So here's something a little offtopic for the offtopic post, but does anybody still use Google Sketchup, or am I just stuck in 2008-2009?

I find it handy for designing just about everything... here's a house (obviously in progress).
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Unread postAuthor: POLAND_SPUD » Thu Jan 17, 2013 10:48 pm

this made my day
[youtube]http://www.youtube.com/watch?v=iqHrfqQmJfg&list=UU-FCbpK3Aaga0gPqc429Xhg[/youtube]
:shock:

Don't ask how I found it
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Unread postAuthor: jackssmirkingrevenge » Fri Jan 18, 2013 12:58 am

mark.f wrote:So here's something a little offtopic for the offtopic post, but does anybody still use Google Sketchup, or am I just stuck in 2008-2009?


It's just you I'm afraid.

Don't ask how I found it


I knew a girl who could magically make a whole cucumber disappear :roll:
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Unread postAuthor: POLAND_SPUD » Fri Jan 18, 2013 1:23 am

I knew a girl who could magically make a whole cucumber disappear
I've recently met a girl who doesn't work, doesn't have rich parents and has lots of $$$

Ohh and she mentioned that she has done some pole dancing in her life (JSR please no jokes relating to the word 'pole' ok ??). When I questioned how does she earn her living she responded with something along the lines of 'I have a talent for making money' and 'I occassionally do some tutoring'

:lol:

the worst part is that she's actually very attractive.. but hey guess I got to check out if she can do some magic tricks

:D
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Unread postAuthor: jackssmirkingrevenge » Fri Jan 18, 2013 1:54 am

POLAND_SPUD wrote:(JSR please no jokes relating to the word 'pole' ok ??)


Oh I have to now :D

What were the Poles doing in Britain in World War 2?

Holding up the telephone lines.

*ahem*

When I questioned how does she earn her living she responded with something along the lines of 'I have a talent for making money' and 'I occassionally do some tutoring'


Ah, "tutoring"... good times :D

the worst part is that she's actually very attractive.. but hey guess I got to check out if she can do some magic tricks


Shouldn't you be saving up for that lathe and mill ;P
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Unread postAuthor: POLAND_SPUD » Fri Jan 18, 2013 3:40 pm

shouldn't you be saving up for that lathe and mill ;P
I think I can get her services for free

as far as lathe and mill goes I might as well order stuff I need from you



ohh and BTW that cucumber magic video... damn I've seen it like 20 times but I can't stop laughing...
not sure if the guy is russian, for me he sounds more like polish to be honest - but I can't tell for sure
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Unread postAuthor: PVC Arsenal 17 » Sat Jan 19, 2013 12:50 pm

Hey POLAND, check this out: https://www.sparkfun.com/products/11460
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Unread postAuthor: POLAND_SPUD » Sat Jan 19, 2013 1:07 pm

Yeah but did you know you can use an arduino board as a programmer ? you just upload a sketch that acts as a programmer, get a few wires and you can programmed ATmega and ATtiny uC, using the board and the IDE ?

That's the method I used


For slightly more than 20$ you can get an arduino board, the thing you linked to is just a programmer
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Unread postAuthor: PVC Arsenal 17 » Sat Jan 19, 2013 1:12 pm

Yeah, I'm aware; I've done it. That programmer is just a super convenient alternative
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Unread postAuthor: POLAND_SPUD » Sat Jan 19, 2013 1:16 pm

One thing I like about arduino is that it's ideal for beginners I've been trying to get into uCs in the past but everything seemed so damn complicated and cryptic that I gave up without trying

so my advice is if you're (you meaning you people out there not you PVC_A) a beginner buy an arduino board and forget about programmers
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Unread postAuthor: jrrdw » Sat Jan 19, 2013 2:31 pm

So here's something a little offtopic for the offtopic post, but does anybody still use Google Sketchup, or am I just stuck in 2008-2009?


1 block at a time....that's gonna take a long time. You can make the bottom 2 courses a component and copy it, drag it, drop it. It would go a lot faster that way.
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Unread postAuthor: mark.f » Sat Jan 19, 2013 2:55 pm

jrrdw wrote:
So here's something a little offtopic for the offtopic post, but does anybody still use Google Sketchup, or am I just stuck in 2008-2009?


1 block at a time....that's gonna take a long time. You can make the bottom 2 courses a component and copy it, drag it, drop it. It would go a lot faster that way.


Uh.... yeah, that's what I did. :) Been using SketchUp for going on 4-5 years...

I was working on the rim joists and starting on the floor joists in that picture.
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Unread postAuthor: jrrdw » Sat Jan 19, 2013 3:53 pm

It's a good program for being free...
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Unread postAuthor: mark.f » Sat Jan 19, 2013 4:22 pm

Guess I could have mentioned it was a wood-framed house. :lol: That might have been confusing.

Planning on modeling thin-brick about 4' below the eaves and finishing off with T1-11. Should look cool.

(This is how you build houses when your future is devoid of anything as financially involved as building a house. :P )
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