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#106
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Re: Prototype Small Wheeled Shooter
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#107
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Re: Prototype Small Wheeled Shooter
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Whether you use of a single sensor or dual sensor doesn't matter, either will take out the subjectivity of the measurement and just give you solid measurements. |
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#108
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Re: Prototype Small Wheeled Shooter
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If two trains going in opposite directions on the same track meet each other, one can't move until the other does. Thanks for the clarification on the FIRST rule ... |
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#109
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Re: Prototype Small Wheeled Shooter
Thanks to all have posted to this thread. We tested our version last night.
We had been running two CIMs at 1:1 with 6" wheels with mediocre results. We could score in the high goal but only if we were close to the wall. Last night we ran the 2-7/8" Bane Bot wheels. Our set up is BB550 motors at a 19:46 reduction. Two wheels 4" apart. The disk is loaded at about 12" off the floor with an angle of about 40 degrees. Running the motors at 50% shot the disks over the top of the high goal from about 17' away. Higher speeds did not change the performance much. We started with 10-3/4" spacing but were not happy so we added a piece of 1/4" poycarbonate. Current spacing is 10-1/2". No additional friction material. Last edited by Andy Brockway : 01-02-2013 at 15:14. Reason: added compression data |
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#110
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Re: Prototype Small Wheeled Shooter
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#111
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Re: Prototype Small Wheeled Shooter
Thanks for all the discussion!
New shooter last night. Slow wheel is a CIM with a 2.5" soft neoprene wheel (1:1). Fast wheel is a mini-CIM with a 4" soft neoprene wheel (1:1). Compression and the spacing between the wheels are not optimized yet. We've ordered a taller 4" wheel and installing a top shield as the frisbee is definitely rising as it goes through. While we don't have the rotational speed that some teams are getting we managed a 53" distance (parallel to the floor start) before optimization. |
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#112
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Re: Prototype Small Wheeled Shooter
Here's some video of us testing our own variation of this idea. I'm not yet thrilled with how it's working out. We're not getting a lot of distance out of it.
http://www.youtube.com/watch?v=FR7ppSZ7VS0 The video shows a few different tests spliced together. I didn't edit out anything bad -- including language, thus the dumb music -- so what you see is what we saw.In each subsequent test, we're dialing back power to the wheels. The details: Input wheel -- Banebots RS550 motor through a 3:1 Versaplanetary transmission driving 2 .8" thick, green Banebots wheels. Output wheel -- BAG Motor through a 1:1 Versaplanetary transmission driving 4 .4" thick, orange Banebots wheels. Bottom surface -- 1/4" delrin sheet Wall -- 1x1x.063" Aluminum tube with 1" wide urethane flat belting double-sided taped to the inside face. Compression -- 3/4" compression, I believe. Loader -- 6" stroke, 3/4" bore pneumatic cylinder Angle -- 30 degrees Exit Height -- 22" Any thoughts? Last edited by Madison : 03-02-2013 at 12:17. |
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#113
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Re: Prototype Small Wheeled Shooter
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#114
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Re: Prototype Small Wheeled Shooter
Is anyone seeing any statistical/quantifiable difference between results when you compare the different banebot wheels (orange/green/blue)?
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#115
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Re: Prototype Small Wheeled Shooter
I don't have the data but we were measuring better distances with the green wheels but they were getting damaged by the discs to quickly for us. The blue wheels weren't that of a much difference in distance.
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#116
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Re: Prototype Small Wheeled Shooter
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One other thing. Do you find that the Versaplanetary gear boxes get hot while you are doing your shooting testing? We set up two tonight and it seemed that they were pretty hot after a relatively short time. thanks |
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#117
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Re: Prototype Small Wheeled Shooter
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#118
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Re: Prototype Small Wheeled Shooter
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We followed the directions on how to assemble from the website.. We are doing the same thing you are with the same size banebot wheels and the hex shafts... we will try more tomorrow night. thanks for the help!! |
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#119
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Re: Prototype Small Wheeled Shooter
Bob,
It might also have to do with how the gearboxes were lubricated. Too much grease can cause of a lot of internal resistance and, of course, too little isn't a pretty sight unless you like metal dust. We use about a pea sized amount of grease per stage, either Superlube or Lithium is what we use but everyone has their favorite. Ours get warm but certainly not crazy hot. |
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#120
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Re: Prototype Small Wheeled Shooter
Our 1:1 boxes get uncomfortably hot after about 30 seconds or so. We definitely won't be running them full time.
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