Revelation Robotics

[Lucas Grell]

Are you giving it time to cure before you use the bot? It takes a day or so to reach full strength.

[RevRobots]

Yes I did While at Barn Battles I replaced one of the motors, and the mounting screws had some strange black crusty stuff on them.

Adam
Revelation Robotics

[Lucas Grell]

So did you have the issues only after the replacement or before as well?

[RevRobots]

Yes there still was that problem. They were so lose in fact, that you could wiggle the motor about as much as you could up and down with the motor completely unscrewed at all.

Adam
Revelation Robotics

[TDS]

are the FT bearing blocks anodized after being tapped? can you see the anoidzation in the holes?  It might prevent loctite from adhering properly

[RevRobots]

Do you mean if the blocks are tapped? Because they aren't, just the motors mounting holes themselves are tapped. Either way I'm  pretty sure they are, you would have to ask Kurtis about that.

Adam
Revelation Robotics

[RevRobots]

Hi Guys,

This question is pointed to the guys who make spinners. How would you guys build the weapon assembly for an Ant? And what Pulley/belt combo would you guys use? I'm asking this because I'm looking to make Justice's weapon belt driven.

Thanks for all you help.

Adam
Revelation Robotics

[Jeff Gier]

I've always used round belts because I like that they can slip on impact.  1/8" round urethane from belting from mcmaster. 

Pulleys are usually custom.  I've taken an aluminum servo city hub and put a groove in it with a file before.  Works really well.

[Koolaid64]

 can make you something if you need.
-Kyle

[RevRobots]

@Jeff

When you say "servo city hub" do you mean these: https://www.servocity.com/html/timing_pinion_pulleys.html, or these: https://www.servocity.com/html/smooth_hub_pulleys.html#.VfcgLOmLMcA, and could I use the belts that they sell to go with them? Or can they stand up to the stress?

@Kyle

Thanks Kyle! I will have to see about that.

All,

I was thinking about how to mount the axle inside of Justice. I think that the type of axle to best suit my needs would be a live axle. How would you guys do this? Maybe these?https://www.servocity.com/html/1_4__ball_bearing_quad_pillow_.html#.VfchzOmLMcA

Adam
Revelation Robotics

[Lucas Grell]

The pulleys servocity sells are XL pitch, they're rather large for a small robot like yours.
Those blocks would probably work well. You can likely use some Fingertech belts and pulleys to power the axle.

[Jeff Gier]

@Jeff

When you say "servo city hub" do you mean these: https://www.servocity.com/html/timing_pinion_pulleys.html, or these: https://www.servocity.com/html/smooth_hub_pulleys.html#.VfcgLOmLMcA, and could I use the belts that they sell to go with them? Or can they stand up to the stress?

I don't see anything on servocity like what I had.  I may have gotten it from lynxmotion.  THey looked like these: http://www.lynxmotion.com/p-115-universal-hub-4mm-pair.aspx

I clamped them on the motor and then spun it and put a groove in it with a round file.  Worked well.

I like dead shafts way more than live shafts.  They add rigidity in most cases and I think it is a lot easier to attach a pulley to a blade than to attach a blade to a shaft.

[RevRobots]

@ Jeff and Lucas,

Thanks for the insight, I should be upgrading Justice very soon.

All,

Here is some C.A.D. of an upcoming Beetleweight: Son of Thunder

SOT is pictured here with a Anti-drum attachment:



And here with a full wedge:



The curved parts will be UHMW, the center motor mounts/center supports are 60-61 Al. and the front and back will be HDPE.

Tell me what you think.

Adam
Revelation Robotics

[Infernaltank]

4wd 1000rpm motors?

[RevRobots]

Yes. I won some 1000rpms at Barn Battles this year, so I though I'd save some money and use the motors.

Adam
Revelation Robotics