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Posted: 2/7/2018 1:28:13 PM EST
[#1]
Quote HistoryQuoted: that mechanism is kinda loud. I wonder if a worm gear type mech could be found?
Or easier, replace the chain sprocket with a belt drive (lawnmower parts?)? |
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Posted: 2/7/2018 7:25:07 PM EST
[#2]
We bought lots of FIRST Robotics parts from these guys: http://www.andymark.com/Belt-Pulley-s/502.htm
They have lots of motors and transmissions too. Look at these guys too: https://www.vexrobotics.com/vexpro/motion If you want pneumatic controllers to control an air compressor and solenoid to release pressure from storage tanks for the whistle. So much stuff. |
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Posted: 2/8/2018 9:23:07 AM EST
[#3]
Update 2/8
It was a busy day yesterday, so I didn't get many pictures of progress. Hopefully today, I'll be able to grab some pics of what is being worked on. The light is working.... We still need a stand, and that should happen in the next few days. I think we can airbrush some color onto the light lens to simulate more of the details and color that should be there. As to the sound of our little motor.....It's not nearly as loud as our Space Shuttle doors. 
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Posted: 2/8/2018 12:22:31 PM EST
[#4]
The light seems pretty bright, considering it was an oil lamp in front of a reflector, on the prototype. Maybe it's a minor issue that only I would notice.
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Posted: 2/8/2018 12:30:17 PM EST
[#5]
Quote HistoryQuoted:
The light seems pretty bright, considering it was an oil lamp in front of a reflector, on the prototype. Maybe it's a minor issue that only I would notice. We've talked about airbrushing a bit of the lens to make it more realistic. |
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Posted: 2/8/2018 12:47:40 PM EST
[#6]
Quote HistoryQuoted: We've talked about airbrushing a bit of the lens to make it more realistic.  
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Posted: 2/8/2018 12:49:53 PM EST
[#7]
Quote HistoryQuoted: We've talked about airbrushing a bit of the lens to make it more realistic. What is the size of the opening/headlight lens? something like this is relatively cheap and could probably be repurposed these are available everywhere, but finding a smooth one, would be best. The thin metal coudl be cut to size. Then, add an LED bulb to the center. 
use a yellow film/glaze, if airbrushing doesn't work well. it looks like the left or middle color would be about right 
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Posted: 2/8/2018 1:56:35 PM EST
[#8]
Quote HistoryQuoted:
As to the sound of our little motor.....It's not nearly as loud as our Space Shuttle doors.
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Posted: 2/8/2018 2:03:27 PM EST
[#9]
Quote HistoryQuoted:
2016-era guns762: "As far as the next Presidents go, Biden should be fine.... he's not nearly as bad as Obama." OUch!!! 
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Posted: 2/8/2018 2:35:03 PM EST
[#10]
We're talking a steam engine here. It's not supposed to be quiet.
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Posted: 2/8/2018 3:03:26 PM EST
[#11]
Quote HistoryQuoted:
The video of our wheels under power for the first time! 
We had to max out the motor, as half power did not move anything. This seems to be just about perfect.  https://www.youtube.com/watch?v=URYvPkX7ARoIt is really easy to build any sized bellow with two sheets of plywood, with some leather stapled between them. You could put a bunch of holes with rubber diaphragms in the plywood (the more you use, the quieter the air intake should be) to suck in air when you expand the bellow, and they would push closed, exhausting all the air out the exhaust hole (should be loud-ish because it only comes out the exhaust). 
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Posted: 2/8/2018 5:03:06 PM EST
[#12]
Ok, here ya go. Revamped light lens.
Not perfect, but looks better than the white plastic. Little spray paint, airbrush, and some bushed stain. 
Whistle got a little closer. 
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Posted: 2/8/2018 5:19:05 PM EST
[#13]
Like the head light, that looks very nice. Great progress!
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Posted: 2/9/2018 10:51:06 AM EST
[#14]
Quote HistoryQuoted:
Like the head light, that looks very nice. Great progress! My artist says she is not happy with it, and wants to do a bit more work on the inside stain. Hopefully she can get it figured out by this afternoon. 
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Posted: 2/9/2018 12:49:54 PM EST
[#15]
Looks fantastic
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Posted: 2/9/2018 6:43:17 PM EST
[#16]
We ran into a bit of a problem today.
The sprocket is moving and causing the chain to come off. We think we may have a solution to try Monday. We are currently using cotter pins to hold the sprocket on the axle. We are going to try bolting it on and see if that stops the movement. We also are going to add a washer to remove any lateral movement in the axle. We have about 1/8" movement currently. Just part of the adventure. |
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Posted: 2/9/2018 7:02:03 PM EST
[#17]
Update 2/9
Working on the boiler cover. 
There were lots of words and sign language shared with me here.....not happy about our sprocket situation. 
Graphics now starting to get done on the tender. 
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Posted: 2/9/2018 7:02:47 PM EST
[#18]
Quote HistoryQuoted:
Ok, here ya go. Revamped light lens. Not perfect, but looks better than the white plastic. Little spray paint, airbrush, and some bushed stain. https://farm5.staticflickr.com/4707/40124849452_ccdb5f1d9b_h.jpg https://farm5.staticflickr.com/4618/25285514517_b1f104683e_h.jpg Whistle got a little closer. https://farm5.staticflickr.com/4716/40122552662_470df32ec1_h.jpg https://farm5.staticflickr.com/4658/40122551452_e6e8a44d06_h.jpg |
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Posted: 2/9/2018 7:13:51 PM EST
[#19]
Quote HistoryQuoted: The light looks really good. Does that fan you got have enough oomph to blow all three, or hasn't the controller arrived?  that there was one on hand in the robotics room. There isn't and now we have to order one.It doesn't take that much air to work the whistle. Hopefully we should be good. |
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Posted: 2/10/2018 9:38:57 AM EST
[#20]
Quote HistoryQuoted:
We still don't have a controller. I was lead astray by Top_Men that there was one on hand in the robotics room. There isn't and now we have to order one.It doesn't take that much air to work the whistle. Hopefully we should be good. 
EBR |
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Posted: 2/10/2018 2:00:18 PM EST
[#21]
Quote HistoryQuoted:
Update 2/9 Working on the boiler cover. https://farm5.staticflickr.com/4671/40142972332_03745ce31e_h.jpg There were lots of words and sign language shared with me here.....not happy about our sprocket situation. https://farm5.staticflickr.com/4694/25304085297_bdf5b9867a_h.jpg Graphics now starting to get done on the tender. https://farm5.staticflickr.com/4754/25304085317_107c472a69_h.jpg 
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Posted: 2/10/2018 2:48:00 PM EST
[#22]
Quote HistoryQuoted:
We still don't have a controller. I was lead astray by Top_Men that there was one on hand in the robotics room. There isn't and now we have to order one.It doesn't take that much air to work the whistle. Hopefully we should be good. Quote HistoryQuoted:
Quoted: The light looks really good. Does that fan you got have enough oomph to blow all three, or hasn't the controller arrived? that there was one on hand in the robotics room. There isn't and now we have to order one.It doesn't take that much air to work the whistle. Hopefully we should be good. |
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Posted: 2/10/2018 3:42:25 PM EST
[#23]
Quote HistoryQuoted: What's the rating on that motor? Voltage/watts or current? Do you want it controlled by an Arduino or other signal to ramp speed up/down, or a knob to set the speed and just have it on/off?
Apparently, robotics is a bit confused..... they need a power source that will run 10 amps, and are working on figuring out how to do that with out batteries. Top_Men seems to understand what needs to happen and is sharing that info as best he can.  I just order what they tell me to.
The arduino will turn it on, twice per day. Once we get a power source we can play around with what speed...constant, or wherever is needed. Lots of experimenting, I imagine. That is the plan. |
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Posted: 2/13/2018 9:14:20 AM EST
[#24]
Update 2/13
The mural is getting some transition blending work from the blue to the wall color. 
Cattle drive is coming along 
Small details continue on the locomotive. 
Boiler cover is coming along, along with more details on the light and the support structure. [url=https://flic.kr/p/24ixzSD] 
New washers helping take up the slack in our axle. This should help us to mitigate some of the chain jump problem. We hope.
We did some experimenting yesterday. This is supposed to be firewood for the tender. Once we get some paint on it, and some end covers, might not look too bad. We only have to do it about 100 times.
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Posted: 2/13/2018 10:41:29 AM EST
[#25]
Er - why not just use real wood?
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Posted: 2/13/2018 11:06:18 AM EST
[#26]
Quote HistoryQuoted:
Er - why not just use real wood? |
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Posted: 2/13/2018 11:41:46 AM EST
[#27]
Quote HistoryQuoted:
Weight, I'd imagine. Exactly. Besides.....this is a challenge.
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Posted: 2/13/2018 5:03:02 PM EST
[#28]
This year's re-entry tiles, eh? What's the difference between an A, a B, and a C piece of wood?
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Posted: 2/13/2018 8:04:45 PM EST
[#29]
Quote HistoryQuoted:
This year's re-entry tiles, eh? What's the difference between an A, a B, and a C piece of wood? 
We had some good success today with the samples.
They are good 10'ers. They look really good viewed from 10ft.
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Posted: 2/13/2018 8:26:11 PM EST
[#30]
Update 2/13.2
Wood I think they look better in person.
As more get done, I think they will perfect their technique. The bark on the second is thinner, and looks pretty darn good. They used several layers of different spray paunts, and some acrylic for the core, then dusted again with more spray paint. 
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Posted: 2/13/2018 8:42:21 PM EST
[#31]
Damn that's hot.
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Posted: 2/13/2018 9:39:36 PM EST
[#32]
I really like this phase of the projects when it goes from being impressive to amazing because of all the detail work.
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Posted: 2/13/2018 9:47:15 PM EST
[#33]
Mural needs at least one buffalo
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Posted: 2/13/2018 9:50:58 PM EST
[#34]
Quote HistoryQuoted:
Mural needs at least one buffalo
There will be a herd near the Indian riders on the other wall. We haven't started the drawing yet, but the references are posted up there already. |
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Posted: 2/15/2018 9:50:22 AM EST
[#35]
Update 2/15
Graphics continue on the tender. 
Mural blending... 
A cowboy appears.... 
We are transitioning projects today and tomorrow, so there may not be lots of pictures to update till next week. 
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Posted: 2/15/2018 11:45:24 AM EST
[#36]
Quote HistoryQuoted:
We are transitioning projects today and tomorrow, so there may not be lots of pictures to update till next week. you've been getting a bit lackadaisical with the progress this month. 
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Posted: 2/15/2018 12:42:31 PM EST
[#37]
Quote HistoryQuoted: Update 2/15
Graphics continue on the tender. https://farm5.staticflickr.com/4749/26381852208_305df586a5_h.jpg https://farm5.staticflickr.com/4755/39571206884_e1c47c4941_h.jpg We are transitioning projects today and tomorrow, so there may not be lots of pictures to update till next week.
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Posted: 2/15/2018 1:49:39 PM EST
[#38]
Quote HistoryQuoted:
Apparently, robotics is a bit confused..... they need a power source that will run 10 amps, and are working on figuring out how to do that with out batteries. Top_Men seems to understand what needs to happen and is sharing that info as best he can. I just order what they tell me to.
The arduino will turn it on, twice per day. Once we get a power source we can play around with what speed...constant, or wherever is needed. Lots of experimenting, I imagine. That is the plan. Quote HistoryQuoted:
Quoted: What's the rating on that motor? Voltage/watts or current? Do you want it controlled by an Arduino or other signal to ramp speed up/down, or a knob to set the speed and just have it on/off?
Apparently, robotics is a bit confused..... they need a power source that will run 10 amps, and are working on figuring out how to do that with out batteries. Top_Men seems to understand what needs to happen and is sharing that info as best he can. I just order what they tell me to.
The arduino will turn it on, twice per day. Once we get a power source we can play around with what speed...constant, or wherever is needed. Lots of experimenting, I imagine. That is the plan. Reason: 10 Amps in a display like that should be using 14 gauge wire, which is pretty beefy. You also don't want to push continual 10A along any distance of wire due to heat and losses (fire hazard) unless it's 12 gauge. If it needs 120 Watts, that would use about 1.25 Amps from the wall outlet (watts is V x A ). An AC-DC Switching supply could make that 5V@ 24 Amps, or 12V @ 10 Amps, or 24V @ 5 Amps. This would allow the more "normally sized" 16 or 18 gauge wire easily found to be used. Over 24V is a slight human shock/spark hazard and out of the "low voltage wiring" for code, except current limited old phone lines, which run at 48V. Off topic, also the reason doorbells, lawn sprinklers, etc run at 24V - More power over small diameter wire with minimal losses. Same reason power is transmitted at 300,000 Volts and 2 Amps for hundreds of miles and 14,000V in town. Trying to support 240V@10,000Amps would need giant cable and transformers to move the amount of power we consume. There's your engineering lesson for the day. Please ask though, for safety and financial reasons, as power supplies > 5A also get expensive really quick, in addition to the more expensive larger gauge wire and fire hazard.
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Posted: 2/16/2018 7:20:37 PM EST
[#39]
Quote HistoryQuoted: Might want to find out the wattage. If it needs 50 Watts (10 Amps at 5 V), a BLDC motor will run just fine at 2 Amps @ 24V, motor controllers have a voltage rating that should let you know. A DC-DC converter should get you to the voltage so you are under 5Amps. Reason: 10 Amps in a display like that should be using 14 gauge wire, which is pretty beefy. You also don't want to push continual 10A along any distance of wire due to heat and losses (fire hazard) unless it's 12 gauge. If it needs 120 Watts, that would use about 1.25 Amps from the wall outlet (watts is V x A ). An AC-DC Switching supply could make that 5V@ 24 Amps, or 12V @ 10 Amps, or 24V @ 5 Amps. This would allow the more "normally sized" 16 or 18 gauge wire easily found to be used. Over 24V is a slight human shock/spark hazard and out of the "low voltage wiring" for code, except current limited old phone lines, which run at 48V. Off topic, also the reason doorbells, lawn sprinklers, etc run at 24V - More power over small diameter wire with minimal losses. Same reason power is transmitted at 300,000 Volts and 2 Amps for hundreds of miles and 14,000V in town. Trying to support 240V@10,000Amps would need giant cable and transformers to move the amount of power we consume. There's your engineering lesson for the day. Please ask though, for safety and financial reasons, as power supplies > 5A also get expensive really quick, in addition to the more expensive larger gauge wire and fire hazard. They seem to have a good idea of how this can be done. My son is also talking to his EE professors down at UW, and they are also working with him on the plan. |
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Posted: 2/16/2018 7:24:43 PM EST
[#40]
Update 2/16
The 3D rocks are all up on the wall, and we got a few more rocks painted. 
We are also working on some chickenwire to hold our firewood up, so we don't actually have to have a full load. 
We are packing the parts with paper that will be painted to give us some depth in the wood stack. The wood will be glued to the outside of the chickenwire. 
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Posted: 2/16/2018 7:31:43 PM EST
[#41]
You really get the best outta those kids
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Posted: 2/16/2018 7:59:32 PM EST
[#42]
Quote HistoryQuoted:
You really get the best outta those kids |
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Posted: 2/21/2018 7:20:25 PM EST
[#43]
Update 2/21
New projects ager getting underway, so finally I have some time to get photos of some progress the kids have made over the last couple days. More parts coming along. 
Kids added more chickenwire after this was taken. Tomorrow, some paint. 
Our display case is taking on the look of a railroad strong box. It will hold our golden spike and photo. 
The muralist wanted to paint a few trees. We decided there needed to be more lodgepole pines, so those started later today. 
The light bracket coming together today. 
Guards going up. 
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Posted: 2/21/2018 7:55:53 PM EST
[#44]
Headlight bracket and trees look fantastic.
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Posted: 2/21/2018 9:03:20 PM EST
[#45]
Forgot to add:
Top_Men helped me today reset the Space Shuttle. Sometime in the last week or so, the doors stopped opening and closing.
Sometime in there, there was a power bump. I called Laramie for Technical support and he talked me through it. He also reminded me we installed a reset button that is accessible from the outside. I forgot about that.  Just turning it off and waiting 20sec, reset everything and it was working later in the day.
He said he's working with a Senior who created a rail gun using a bank of capacitors. They are working on solving our power problem for the whistle on the train. They are sharing that info with our current robotics student. They had a meeting with two of his professors discussing the best way to solve the problem. In other words...... Top_Men is still part of our team. He also told me he just got a 102% on his first Calc 2 test. Pretty proud of that kid. He carried a 4.0 for his first semester of Computer Engineering.
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Posted: 2/22/2018 9:22:06 AM EST
[#46]
Quote HistoryQuoted:
Forgot to add: He also told me he just got a 102% on his first Calc 2 test. Pretty proud of that kid. He carried a 4.0 for his first semester of Computer Engineering.In this case however the rule may have been broken!! EBR |
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Posted: 2/22/2018 8:01:04 PM EST
[#47]
Quote HistoryQuoted: Well you know what they say: The acorn doesn't fall far from the tree!! In this case however the rule may have been broken!! EBR
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Posted: 2/22/2018 8:07:02 PM EST
[#48]
Update 2/22
Our display box is looking much better. There has been some drama over the direction and assembly of this. Students have not always agreed with the order of assembly, or techniques.Luckily, I'm more stubborn they they are.....well, I also get that all important veto power. 
Anyway, some stain, and paint and this should look about like what we need. Next wil be the cover. These two guys pitched in today and got some serious work done in a short amount of time. 
The light is back and wired up. 
Tomorrow we are talking about starting the weathering. 
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Posted: 2/22/2018 8:09:56 PM EST
[#49]
New video of power to the wheels and light; soon, the bell and whistle.
 Locomotive coming together. |
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Posted: 2/23/2018 9:32:15 PM EST
[#50]
Update 2/23
More trees. The artist is enjoying this so far.
It's time for the dirt, grime, rust and weathering. O'l 87 is a working locomotive, not some show train.
This is the beginning of what we think should take three layers. 
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