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 I can't help but notice during the building sequence, there were a whole lot of student hands working on that robot.
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This shows the attempted repair and subsequent damage to a banebot p60 256:1 for those interested.
Discussion
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27-02-2011 18:53
Andrew Bates
Re: pic: banebot p60 256:1 damage
Any background information on how the gearbox originally broke?
27-02-2011 18:58
Hawiian Cadder
Re: pic: banebot p60 256:1 damage
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Originally Posted by corpralchee
Any background information on how the gearbox originally broke?
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256-1 is a pretty hefty ratio and it would not be too dificult to get a lot of torque on that.
27-02-2011 19:07
sanddrag
Re: pic: banebot p60 256:1 damage
Do you have a picture of the application? Was there an additional ratio after this, to an arm (of what length and weight?)?
27-02-2011 19:14
Swampdude
Re: pic: banebot p60 256:1 damage
In this picture where you see the AM toughbox, there were (2) p60's and (2) sprockets up top working together with a 3:1 sprocket reduction. That original setup was more sedate than what the AM toughbox with a 5:1 reduction is seeing. It's much faster now and that's a good thing.
27-02-2011 19:39
IndySam
Re: pic: banebot p60 256:1 damage
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Originally Posted by Swampdude
In this picture where you see the AM toughbox, there were (2) p60's and (2) sprockets up top working together with a 3:1 sprocket reduction. That original setup was more sedate than what the AM toughbox with a 5:1 reduction is seeing. It's much faster now and that's a good thing.
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27-02-2011 21:01
Swampdude
Re: pic: banebot p60 256:1 damage
We're replacing 2 drive cims w/ banebot cimulators and bb775's. Hopefully those will hold up for drive usage.
27-02-2011 21:13
IndySam
Re: pic: banebot p60 256:1 damage
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Originally Posted by Swampdude
We're replacing 2 drive cims w/ banebot cimulators and bb775's. Hopefully those will hold up for drive usage.
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27-02-2011 21:36
Swampdude
Re: pic: banebot p60 256:1 damage
I'm afraid of stalling/toasting FP's. Last year our AM Toughbox kicker mercilessly stalled a CIM and beat the tar out of it but it never quit. So I'll stick with Andy's Toughbox and CIM combo. Andymark never let us down.... good stuff.
27-02-2011 23:15
Hawiian Cadder
Re: pic: banebot p60 256:1 damage
i would not recommend using a FP in a situation like that, we did on our lift and toasted 4 before we got it marginally working, fisher prices really really don't like being stalled.
28-02-2011 00:04
pfreivald
Re: pic: banebot p60 256:1 damage
We have an FP on our lift, but with neutral buoyancy and a screw drive, the motor is never under stall.
I'm more worried about the BB transmission than I am the motor under that setup.
28-02-2011 00:11
Chris is me
Re: pic: banebot p60 256:1 damage
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Originally Posted by Swampdude
I'm afraid of stalling/toasting FP's.
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The drivetrain is a much more stressful place than an arm for motors like the FP and RS-775. Seriously.
28-02-2011 00:13
pfreivald
Re: pic: banebot p60 256:1 damage
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Originally Posted by Chris is me
The drivetrain is a much more stressful place than an arm for motors like the FP and RS-775. Seriously.
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It depends a lot on how things are designed, now, doesn't it? After all, those FP motors are for Power Wheels... And what do they run on those Power Wheels, after all?
28-02-2011 00:14
Chris is me
Re: pic: banebot p60 256:1 damage
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Originally Posted by pfreivald
It depends a lot on how things are designed, now, doesn't it? After all, those FP motors are for Power Wheels... And what do they run on those Power Wheels, after all?
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28-02-2011 08:19
pfreivald
Re: pic: banebot p60 256:1 damage
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Originally Posted by Chris is me
Plastic wheels that have no hope of stalling!
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