pic: banebot p60 256:1 damage
 

Re: pic: banebot p60 256:1 damage
 

Any background information on how the gearbox originally broke?

Re: pic: banebot p60 256:1 damage
 

my guess would be too much torque.
256-1 is a pretty hefty ratio and it would not be too dificult to get a lot of torque on that.

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?)?

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.

Re: pic: banebot p60 256:1 damage
 

What are you going to replace that CIM with?

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.

Re: pic: banebot p60 256:1 damage
 

Are you using the FP? It would rock on a AM planetary on that toughbox.

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.

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.

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.

Re: pic: banebot p60 256:1 damage
 

It's a legitimate concern, but seriously, with the kind of reduction you need for an arm, you won't damage the FP at all.

The drivetrain is a much more stressful place than an arm for motors like the FP and RS-775. Seriously.

Re: pic: banebot p60 256:1 damage
 

Well, as usual, categorical statements like that are not necessarily true.

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?

Re: pic: banebot p60 256:1 damage
 

Plastic wheels that have no hope of stalling! :)

Re: pic: banebot p60 256:1 damage
 

With eight brothers and a propensity toward clown-car-ism, I can assure those wheels can stall!