Ofsted/my friendly uncle/I don't know
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Re: Ofsted/my friendly uncle/I don't know
No don't heat it! :L Heating polycarbonate makes the folding easier, but it's much more brittle when it cools. 1 - 1.5mm polycarb cold folds fine, 2mm is a bit of a pain and can require some heating to get it to do tight bends.
1mm should be ok, but you might want to add right angle bends along long edges to help stiffen it, as it's quite flexible.
1mm should be ok, but you might want to add right angle bends along long edges to help stiffen it, as it's quite flexible.
Rory Mangles - Team Nuts
Robots: Nuts 2 and many more...
NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
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Re: Ofsted/my friendly uncle/I don't know
How sharp can you get the bends?
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Re: Ofsted/my friendly uncle/I don't know
I generally avoid more than 90 degrees, but should be fine 135 degrees if need be
Rory Mangles - Team Nuts
Robots: Nuts 2 and many more...
NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
Robots: Nuts 2 and many more...
NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
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Re: Ofsted/my friendly uncle/I don't know
Because I wasn't expecting to go I'm now bodging together exuberant with whatever I got, so a shallow aluminum wedge begins, nothing big nothing strong but hopefully something drivable for Oxford event other than an underperforming bulldozer scoop and a slightly glitchy spinner
Team Badger
Has a 3d printer now yay
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I'm gonna build something huge and stupid, try and stop me
Has a 3d printer now yay
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-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
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Re: Ofsted/my friendly uncle/I don't know
I've seen Rory with a 50g blade and I've heard numerous threats of 6inchers but I thought, hey what if I look at the biggest motor possible, and to which I found a 39g 4200kv 22a mega motor, to which I thought wow what if you stuck a thin 6inch bar on that? Done the maths and realized it's illegal as it will be able to do 800mph and will break the speed of sound and cause a sonic boom which is illegal unless you receive special permissions. If anyone has designed a faster spinner please do tell
Team Badger
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Re: Ofsted/my friendly uncle/I don't know
It won't break the sound barrier. The drag goes up exponentially as you approach the speed of sound. Unless you start designing the bar to reduce transonic drag, which will be nigh-on impossible without an aerodynamics degree, you'll max out at 550-600 mph tip speed tops.
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Re: Ofsted/my friendly uncle/I don't know
Degree level aerodynamics here I come nah I'm going to design it so it could max at 680 but make it drag/downforce heavy so it only does like half that and doesn't fly
Team Badger
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
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Re: Ofsted/my friendly uncle/I don't know
Pre-AWS update:
Babymetal: very slight chamfering of the back so it can be tilted further before beached and I have replaced the old scoop with a new hinged one which can also fall to the floor when upside down, will try and post a picture when it's finished
Exuberant:In order to fix an issue I ripped the whole electronics out the chassis and reconfigured it so it's now a firestorm style flipper, but 2 pieces of metal with 2 different hinges, who knows how it'll perform but it's temporary and a bit more interesting
Buffy: haven't changed anything but I've found out how to make it turn on properly every time and we are still trying to engineer some sort of motor protection that weighs 2g or less.Possibly sponge
Sorry for randomly long post :p
Babymetal: very slight chamfering of the back so it can be tilted further before beached and I have replaced the old scoop with a new hinged one which can also fall to the floor when upside down, will try and post a picture when it's finished
Exuberant:In order to fix an issue I ripped the whole electronics out the chassis and reconfigured it so it's now a firestorm style flipper, but 2 pieces of metal with 2 different hinges, who knows how it'll perform but it's temporary and a bit more interesting
Buffy: haven't changed anything but I've found out how to make it turn on properly every time and we are still trying to engineer some sort of motor protection that weighs 2g or less.Possibly sponge
Sorry for randomly long post :p
Team Badger
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
Has a 3d printer now yay
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-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
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Re: Ofsted/my friendly uncle/I don't know
How easy is it to add a second servo? Do you just solder both directly onto the pins?
Team Badger
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
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- Posts: 433
- Joined: Sun Nov 30, 2014 9:34 pm
- Location: Stroud,Gloucestershire
Re: Ofsted/my friendly uncle/I don't know
So I'm probably ditching the plan that need 2 servos (a elastic flipper) but for the new Buffy I need to know where I could source 1mm x ~400mm x 16mm of hardox, nothing at all suspicious about needing 16inches of spinner blade material, right?
Team Badger
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy
I'm gonna build something huge and stupid, try and stop me