Page 20 of 34
Re: Storm the Castle B
Posted: February 27th, 2011, 6:48 am
by Singh1997
With the murlin though, the string is used only to connect the wheel, so would it be allowed?
Re: Storm the Castle B
Posted: February 27th, 2011, 5:31 pm
by pokegman
brobo wrote:pokegman wrote:Can you put the guides/rails on the FAT at an angle?
I don't see why not, but at the same time I don't see why you would want to. You would lose a lot of energy buy angling the rails.
I know the trebuchet loses the energy, but we can't seem to keep our trebuchet from going off unexpectedly without the angle. How do we keep the rails straight and the arm from moving without the counterweight?
Thanks
Re: Storm the Castle B
Posted: February 28th, 2011, 2:01 pm
by brobo
pokegman wrote:brobo wrote:pokegman wrote:Can you put the guides/rails on the FAT at an angle?
I don't see why not, but at the same time I don't see why you would want to. You would lose a lot of energy buy angling the rails.
I know the trebuchet loses the energy, but we can't seem to keep our trebuchet from going off unexpectedly without the angle. How do we keep the rails straight and the arm from moving without the counterweight?
Thanks
Add some weights or something to the other side to make it ballance out.
Re: Storm the Castle B
Posted: February 28th, 2011, 3:59 pm
by pokegman
brobo wrote:pokegman wrote:brobo wrote:Can you put the guides/rails on the FAT at an angle?
I don't see why not, but at the same time I don't see why you would want to. You would lose a lot of energy buy angling the rails.
Add some weights or something to the other side to make it ballance out.
Okay Thanks brobo! from what you told me we decided to work with lowering the incline a bit but still it doesn't fire without the CW. I just hope the judges won't think we're adding energy to the device with the decline.
Thanks again!
Re: Storm the Castle B
Posted: February 28th, 2011, 8:06 pm
by Friedoyster3
It specifically says in the rules that the center of gravity must not drop in the launch, so angling the rails
would be illegal. What we did to keep our arm from coming off the track was to put washers and pins on the ends of the falling bar that falls through vertical guides if that makes sense.
Re: Storm the Castle B
Posted: March 1st, 2011, 6:34 am
by pokegman
Friedoyster3 wrote:It specifically says in the rules that the center of gravity must not drop in the launch, so angling the rails
would be illegal. What we did to keep our arm from coming off the track was to put washers and pins on the ends of the falling bar that falls through vertical guides if that makes sense.
So I guess we need to redo the guides then. Our fall bar isn't the problem (the first thing we did was secure that in place w/ washers and pins). Our wheels just always roll backwards without the counterweight BECAUSE of the weight of the fall bar so we're just going to add weight to the end of the arm to even it out.
Re: Storm the Castle B
Posted: March 2nd, 2011, 12:13 pm
by mtheleman
Friedoyster3 wrote:I was at Thomas Jefferson Middle School's regional toady and they had a 2.222 kg CW and a 41.6g projectile. They had placed their target at what I'm guessing to be somewhere for 17-20 meters (granted they were plagued with a bout of 3 miss fires and ended up launching the ball backwards on all three shots). The point is is that if you can come close to that distance you should be set for most regionals if not most state competitions.
Saturday there was a team that placed the target at 22 meters and over shot it all three throws. 3kg cw and 40 gram projectile.
Re: Storm the Castle B
Posted: March 2nd, 2011, 4:17 pm
by Friedoyster3
mtheleman wrote:Friedoyster3 wrote:I was at Thomas Jefferson Middle School's regional toady and they had a 2.222 kg CW and a 41.6g projectile. They had placed their target at what I'm guessing to be somewhere for 17-20 meters (granted they were plagued with a bout of 3 miss fires and ended up launching the ball backwards on all three shots). The point is is that if you can come close to that distance you should be set for most regionals if not most state competitions.
Saturday there was a team that placed the target at 22 meters and over shot it all three throws. 3kg cw and 40 gram projectile.
Do you happen to know if this was the farthest placed target and also, what kind of trebuchet did they use?
Re: Storm the Castle B
Posted: March 3rd, 2011, 6:39 am
by mtheleman
Friedoyster3 wrote:mtheleman wrote:Friedoyster3 wrote:I was at Thomas Jefferson Middle School's regional toady and they had a 2.222 kg CW and a 41.6g projectile. They had placed their target at what I'm guessing to be somewhere for 17-20 meters (granted they were plagued with a bout of 3 miss fires and ended up launching the ball backwards on all three shots). The point is is that if you can come close to that distance you should be set for most regionals if not most state competitions.
Saturday there was a team that placed the target at 22 meters and over shot it all three throws. 3kg cw and 40 gram projectile.
Do you happen to know if this was the farthest placed target and also, what kind of trebuchet did they use?
That was the farthest throw that I have seen this year. I was helping run the event on Saturday. I also ran it in a January competition. It was a floating arm design painted pink. I think the color choice may have given them the edge.
Re: Storm the Castle B
Posted: March 3rd, 2011, 1:41 pm
by Friedoyster3
That was the farthest throw that I have seen this year. I was helping run the event on Saturday. I also ran it in a January competition. It was a floating arm design painted pink. I think the color choice may have given them the edge.
Yeah because that seems to be a decent trebuchet, but I have seen way better. Also, would you agree that usually one mabey two floating arms show up to competition especially at the regional level?