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Unread 08-01-2009, 15:55
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Re: Motor Question?

In 2006, we used the FP motors and gearboxes to pick balls up. It wasn't the fastest one on the field, but it wasn't the slowest either.

The JVN Design Calculator (search in the white papers for it) is great for playing around with this stuff. Then, when a judge asks you why you chose a certain motor, you can answer with technical reasoning (speed numbers, torque numbers, etc) and not "Uhh...well...".

Again, I'll plug the design calculator. Great tool. Thank you for it, John.
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Unread 10-01-2009, 16:11
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Re: Motor Question?

How are the fisherprice gear boxes modified? Any recommendations on how to modify them to get more speed? How do we attached a belt or pully to the fisher price box?
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Unread 10-01-2009, 20:46
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Re: Motor Question?

You can actually just cut out a section of the transmission, and then attach to a stage with less torque and more speed. It's rather easy to do.

If you are a rookie team and do not have old FP transmissions to play with (so that you can open one up and poke around without worrying about destroying anything important), I am *certain* that a team in your area will have one that they can give you. If you can't find one locally, 1551 will happily mail you one.

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Unread 10-01-2009, 20:53
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Re: Motor Question?

Are you allowed to modify the FP transmission, I looked in the manual and it wasnt listed under the modification that can be made to the motors or gearboxes.
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Unread 10-01-2009, 22:17
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Re: Motor Question?

Quote:
Originally Posted by Mechkrunch View Post
Are you allowed to modify the FP transmission, I looked in the manual and it wasnt listed under the modification that can be made to the motors or gearboxes.
The FP transmission isn't considered part of the motor, so you can get rid of it if you want.
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Unread 11-01-2009, 19:35
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Re: Motor Question?

Speaking of FP motors and transmissions, did anyone notice that the pinion on the FP motor this year is 16 teeth instead if 19 teeth like the last 3 years. Anyone count the ratio on the new 2009 FP motor-trans? It is now likely running a transmission output of about 85% as fast as they used to with 15% more torque.
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