Very cool. My mind got a little blown over the threaded dead shaft. I guess I assumed it was going to be live and was pondering how in the world you could apply enough clamping pressure to keep that weapon captive. I'm loving the nuts and bolts breakdown of it all.
What are the benefits of a dead shaft vs a live shaft? I assume that you are able to have a larger bearing surface in this application which would make it more robust. Is that correct?
It depends on your design. For THIS, a live shaft might be silly since I'd need to support the shaft with bearings top and bottom, rather than in the middle. For Crippling Depression, having a dead shaft would rely on some sort of part to hold the weapon on and keep it from slipping off, which could be problematic. The design really dictates which is better. For Copperhead, the wheels are on dead shafts, and they rely on a large washer bolted into the end to keep the wheel on. The dead shaft is stronger, as it's bolted into the frame, but a strong hit from the side could theoretically put a lot of stress on the washer. They each just have different considerations.
Generally dead shafts allow your shaft to be part of the rigidity of your frame, since they can be rigidly attached to your frame rathter than through bearings, and therefore generally increase the strength. Live shafts allow you to transfer energy through frame members, since it's not rigidly attached.
You should mill a hex to the end of the shafts that way you can use the frame as a "wrench" to hold the dead shaft while you tighten it. Only problem is that you have to cut a hex in the frame.
I know 3D printing with few exceptions, really isn't viable for larger robots. How has the advent of 3D tech changed beetleweight and featherweights? I unfortunately have really only started watching them recently and don't have a good idea of what the robots were like before.
3d printing has a place in EVERY weight class. For lower weight classes, it's just more versatile. But heavyweights use it from time to time for various internal parts. I have several 3d printed parts in my featherweight as well. It has really changed the smaller weight classes for sure. And as the materials get stronger, it can now be used in more applications.
@@RobertCowanDIY I guess I should have said what I more meant, in that it isn't viable as a large component in most robots like the chassis or wheels (Huge). Whereas in featherweights and beetleweights the chassis can be made by 3D printing. I think I've seen that a couple of the battlebots teams use 3D printing for certain component protections and such. I was more asking if it has changed design by allowing the creation of shapes and things that you couldn't do before, or helped with time in the pits and wallet with less expensive methods of existing parts and design. I clearly needed more coffee this morning.
@@42grath I have no idea where you're getting the idea to 3D print a featherweight chassis. 3D printed beetles are already pushing it, a 3D printed featherweight is going to disintegrate. That's assuming you even have a 3D printer big enough to print it out and not have it warp into a potato chip.
Is the BELT Rubber, or a "KEVLAR" Reinforced Belt? I know that "EVERYONE" is giving you their "$0.02" of recommendations, but for the "CORE" of the "Body", I was wondering if a SOLID 3D Printed Nylon with a channel for the Weapon Drive "Sandwiched" with a High Strength Aluminum would give you a better RIGIDITY and Light Weight result... Seriously, other than watching "BATTLE BOTS" when it was on Nationally Syndicated TV, I know ABSOLUTELY NOTHING about building these BEAUTIES. Thanks for sharing your Fabrication and Assembly of YOUR "Bot o' Death"! Take care, 🤓 -Thomas Western Washington State
Thanks for sharing and promoting the sport by helping others understand how things work!
Very cool. My mind got a little blown over the threaded dead shaft. I guess I assumed it was going to be live and was pondering how in the world you could apply enough clamping pressure to keep that weapon captive. I'm loving the nuts and bolts breakdown of it all.
Excellent Robert. Very interesting.
Thank you, thank you, thank you for this! It finally makes sense to me how to set up a non-direct drive weapon! :D
Nice Valkyrie shirt. I wore mine the other day :)
Did you ever discuss the pros and cons of using a dead shaft versus a live one in another video? I'd be interested to know about this.
Live shaft have greater tendency to bend
What are the benefits of a dead shaft vs a live shaft? I assume that you are able to have a larger bearing surface in this application which would make it more robust. Is that correct?
It depends on your design. For THIS, a live shaft might be silly since I'd need to support the shaft with bearings top and bottom, rather than in the middle. For Crippling Depression, having a dead shaft would rely on some sort of part to hold the weapon on and keep it from slipping off, which could be problematic. The design really dictates which is better. For Copperhead, the wheels are on dead shafts, and they rely on a large washer bolted into the end to keep the wheel on. The dead shaft is stronger, as it's bolted into the frame, but a strong hit from the side could theoretically put a lot of stress on the washer. They each just have different considerations.
Generally dead shafts allow your shaft to be part of the rigidity of your frame, since they can be rigidly attached to your frame rathter than through bearings, and therefore generally increase the strength. Live shafts allow you to transfer energy through frame members, since it's not rigidly attached.
Which motor do you use in the video?
You should mill a hex to the end of the shafts that way you can use the frame as a "wrench" to hold the dead shaft while you tighten it. Only problem is that you have to cut a hex in the frame.
I was going to put a flat on the ends of the shafts, and key them into the frame, so they don't spin.
That works as well. Looks forward to seeing the completed build
hi, you have really good design, why not you participate in the battle bot competition?
or you already did?
You should watch the newest season, I'm on team Copperhead!
Cool
I'd like to see a bot with the word "Relapse" in it's name!!
Isn't it the "Flux Actuated Kinematic Engine".???
Fake you mean 😂😂😂😂
Too many inches for my metric brain.
Thankfully, I'm able to work in metric and inches ;-)
That's what she said
Name of the weapon motor please !
It's discontinued and not available anymore, sorry.
Robert Cowan no prob sir thanks anyway... can u please suggest other ones for a Beatle pl
Has it been made whole ??
I'm not really sure what you're asking here.
@@RobertCowanDIY actually i Come from Indonesia so the language I typed is not very correct😅😅
@@RobertCowanDIY I believe he meant to ask if you have already finished the bot
I know 3D printing with few exceptions, really isn't viable for larger robots. How has the advent of 3D tech changed beetleweight and featherweights? I unfortunately have really only started watching them recently and don't have a good idea of what the robots were like before.
3d printing has a place in EVERY weight class. For lower weight classes, it's just more versatile. But heavyweights use it from time to time for various internal parts. I have several 3d printed parts in my featherweight as well. It has really changed the smaller weight classes for sure. And as the materials get stronger, it can now be used in more applications.
@@RobertCowanDIY I guess I should have said what I more meant, in that it isn't viable as a large component in most robots like the chassis or wheels (Huge). Whereas in featherweights and beetleweights the chassis can be made by 3D printing. I think I've seen that a couple of the battlebots teams use 3D printing for certain component protections and such. I was more asking if it has changed design by allowing the creation of shapes and things that you couldn't do before, or helped with time in the pits and wallet with less expensive methods of existing parts and design.
I clearly needed more coffee this morning.
@@42grath I have no idea where you're getting the idea to 3D print a featherweight chassis. 3D printed beetles are already pushing it, a 3D printed featherweight is going to disintegrate. That's assuming you even have a 3D printer big enough to print it out and not have it warp into a potato chip.
No hub motor?!?!? jk. it would really screw up the weight distribution with a weapon that big.
I wanted to use a hub motor, but I couldn't fit it all into the height unfortunately.
Is the BELT Rubber, or a "KEVLAR" Reinforced Belt?
I know that "EVERYONE" is giving you their "$0.02" of recommendations, but for the "CORE" of the "Body", I was wondering if a SOLID 3D Printed Nylon with a channel for the Weapon Drive "Sandwiched" with a High Strength Aluminum would give you a better RIGIDITY and Light Weight result...
Seriously, other than watching "BATTLE BOTS" when it was on Nationally Syndicated TV, I know ABSOLUTELY NOTHING about building these BEAUTIES.
Thanks for sharing your Fabrication and Assembly of YOUR "Bot o' Death"!
Take care,
🤓 -Thomas
Western Washington State