40 balls per second on Spyders... ?

['Mag]

Nerebro - If you're just dividing the distance traveled by the cylce time, then this wouldn't be the top bolt speed. This would be the average speed the bolt is traveling at. This includes starting at 0 accelerating, then stopping and accelerating in the opposite direction. So, I figure the top speed would be considerable higher than the average speed.

I think to get a better estimate, then you'd have to take half the cylce time (just the bolt going forward), and then probably take half that time (half the time it's speeding up, then half the time it's slowing down). This should be the average speed it's traveling while it accelerates. I realize this wouldn't be much more accurate, but it (hopefully) shows that the bolt is moving a little faster than 10fps.

Please point out any problems in this theory (I'm sure that it's not airtight, and I'd like to know the correct way). And try to get a better estimate of TOP bolt speed.

[314159]

instead of just splitting it in half. if you subtract the time the bolt has the valve open, and divide that by half, then you can get the average speed over most of the bolt movement.

the problem is that to get an actuall speed, you must specify a exact location to take that speed at. for what we are futzing with right now, i think that the average is fine.

[nerobro]

I'm quoting numbers I can be sure on. the level 10 mag bolt moves ~4fps untill the bolt passes the ball in teh stack, then it moves faster, then it moves fastest when closing.

the spyder bolt moves faster and faster untill it's shut, then returns equally fast and comes to a stop. :-) None of us have the proper equipment to get the real data. the MOST you could assume is that the spyder bolt is going 2x the speed I quoted when it's finally shut. but that's not entirely true because the boltspring looses force as it extends....

Basicly it's a lot of math, for a number that doesn't matter.

[314159]

just put in an order to digikey for the receptacles i need to plug the solenoid, power (also going to add another 9v conector in paralell for more power), and trigger.

if everything goes as planed, and my calc class dosen't engulf me, i should be able to throw together something this weekend ^_^.

here is some eye candy in the mean time

[Azemoth]

Hehe, the "BENCH" dum dum duuuummmmm.... hehe, I can't wait to see some proof, but I was over last night to 314159's house and he showed me the equipment he used to test it and I have to agree with him. I do NOT know a lot about tech stuff. But, I've seen the system that he uses to test it, and I would believe it if he says it.

[Arturus]

The thread's turned into what I was hoping for. An informative discussion without the usual flaming and blatant accusations that may have been found on other forums. (well, close enough to it )

Not being as technical and up to par as some of the posters, I'm doing my best to keep up.

And yes, this thread was never started with the intention of being a Mag vs. Spyder debate. Rather to see if there was any truth to the claim. I've never been one very hyped up on the issue of ROF and cycle rate, but I wouldn't mind seeing a video of a spyder shooting anything near 40bps.

[nerobro]

You won't ever see a spyder doing 40bps of paint.... Though we are working on getting you a video of one cycling at 30bps and 40bps.

40 and 50 bps don't allow time for paint to load.

[Muzikman]

This is very interesting, and all I can say is that anything Nerobro is involved in is interesting. But closer observation determines that that pic of the "Bench" has to be fake. What respectable geek would be drinking Canada Dry not Mt Dew or half a pot of coffee

[314159]

Originally posted by Muzikman
This is very interesting, and all I can say is that anything Nerobro is involved in is interesting. But closer observation determines that that pic of the "Bench" has to be fake. What respectable geek would be drinking Canada Dry not Mt Dew or half a pot of coffee

i do frequent 7-11 enough buying fountain drinks(caffiene) to feel good about helping put someones kid through college.....

ok i have been faking the geek life to be more popular and have the chicks throw themselves at me. they really admire a big..... intelect

[nerobro]

/me pulls himself back into his chair and hits reply....

Muz, i'm not so sure how to take that ;-)

As for the bench, tha'ts an older version of the bench, ther e are now much newer and interesting bits on it. A nixie tube frequency counter.. and things like that :-)

[314159]

tektronix storage scope mainframe, couple extra modules, dual powersupply with volt/current controll. and about 5 7-11 cups ^_^.

[314159]

i even have a half full 7-11 cup waiting in the car for me after work ^_^

[MagDog68]

Am I the only one that wants to play with a pump now?

~Fred

[joeyjoe367]

wow. Interesting topic.

...on a side note, I don't think that it would matter if you could get a spyder to shoot 40 bps anyway. The mass of the spyder's bolt AND hammer (where the mag only has a bolt, and SB2 is uber light ) is pretty dang heavy, and when you've got that amount of mass reciprocating at 40hz....

...can you say "recoil" ?

[314159]

i like to play with pumps too. i have a pgp, pmi-1, p68 at, and a sterling. kinda ironic that i love pump play eh? if you are going to be down at the iao keep any eye out for the team playing 7 man novice w/pumps.

(PacMan/terminal_err/3141519/.... thoes are some of my handles)