batterys

haz · Post by **haz** » Mon May 02, 2011 4:36 pm

about an hour probably

i love the 9g towerpro servos!

Anoptimistprime · Post by **Anoptimistprime** » Mon May 02, 2011 4:41 pm

i have shed loads of lego from years ago
i know that the wheels are used alot i plan to do the same but,
are say the long arms that are prebent allowed in a competion?
or do we have to make the flipper arms ourselves etc?

haz · Post by **haz** » Mon May 02, 2011 4:43 pm

you can use what you like mate, just as long as it fits in the 4"cube and is 150g or under

Anoptimistprime · Post by **Anoptimistprime** » Mon May 02, 2011 4:50 pm

it won't be made completely out of lego as it would probably get battered by somekind of spinner
also does it need to have a switch or just be able to detach the battery from the receiver?

haz · Post by **haz** » Mon May 02, 2011 5:00 pm

i just use a plug

joey_picus · Post by **joey_picus** » Mon May 02, 2011 5:31 pm

You do need some way of deactivating the robot from the outside, but I've never had any trouble with having the battery connectors accessible from the sides.

Anoptimistprime · Post by **Anoptimistprime** » Mon May 02, 2011 6:56 pm

Is there any point in speed hacking a servo if it's a micro one?
I want it to be pretty speedy but will it be too quick?

haz · Post by **haz** » Mon May 02, 2011 6:59 pm

yes.

take it from someone who knows

http://www.youtube.com/watch?v=MuLVG4HKkOE

Rhys · Post by **Rhys** » Mon May 02, 2011 7:16 pm

Anoptimistprime wrote:Is there any point in speed hacking a servo if it's a micro one?
I want it to be pretty speedy but will it be too quick?

If it's any smaller than a Naro Max I wouldn't bother. The small 9g servos tend to lose too much torque.

peterwaller · Post by **peterwaller** » Mon May 02, 2011 7:19 pm

It is not quite that simple the normal way of speed hacking is removing one of the intermediate gears so you lose 2 gear reductions normall about 3:1 each so it goes 9 times faster.
As normal in physics you don't get something for nothing so you reduce the torque by a factor of 9:1.
With micro servo's you don't have much torque to start with so you will have virtually no pushing power.