Using gold motors

[blazerbotics]

Using gold motors

mine are just mounted on 6mm polycarb. You shouldnt need to adjust gears providing they are mounted correctly.

[mark_m]

Using gold motors

Ive just finished a gearbox for use with my current project. It uses a 12v gold motor with heavy duty mod 0.8 gears.
It appears to be working quite well, but its a bit noisy. Despite the gearbox plates being waterjet cut the gears still arent perfectly well aligned (within 0.1mm though).
What lubrication should I be using? There will be electronic circuit boards mounted close to the gearbox so I dont want oil flying everywhere.
Ive not allowed the gears time to run-in yet so Im hoping theyll get quieter after a bit of use.

cheers
Mark
(see profile pic for photo of project)

[blazerbotics]

Using gold motors

nice job, most people dont bother with oil, mainly due to it picking up dust etc (seeing as robots run on wooden floors, there alot of it!). Gears are always abit noisy when ran dry, they should be ok. Ive never had any probs.

[Guest]

Using gold motors

Yes, but I dont think this is for a robot. Looks more like an electric bicycle.

[leorcc]

Using gold motors

Or a feather disk weapon photographed from the bottom/top.

[mark_m]

Using gold motors

Youre all wrong, but Christians closest! Im attempting to build a robotic unicycle that self balances.

[maddox]

Using gold motors

Mark, if you want to have a clean lubrificated gearbox, you will have to enclose it.
Depending on RPM, but I would use classic gear grease.
The next best thing is to use a classic pencil,and color the teeth.On other word, a thin coating of pure graphite. Dont overdo it, otherwise the graphite dust can cause trouble on the PCBs.

[james...venom]

Using gold motors

0.1 of a mil out, that wont make any diffrence lol. but if you want a super job you would want an enclosed gearbox. keeps all the dirt and grit out. we use a thick grease in venom and ploughbot. they work perfik

[aliboy]

Using gold motors

What do people think about running the 24v gold motors at 36v ?

[ewan]

Using gold motors

36v of bats is heavy, Id guess the motor would get very hot, I think its completely enclosed

[team_ireland]

Using gold motors

The other problem alistair is that at 36v they will be pulling nearly 40amps at stall. Thats alot of current and will need a Big speedo to deal with it.

They will also get very hot. Realistically to run golds you will need to use 3amp sanyo cells. These are quite heavy and would weigh 2.85kg.

Another problem with 36vs is a supernova (or replacement) will not charge those batteries.

So perhaps sticking with 24v is a better idea.

Regards
Ian

[sam_t]

Using gold motors

40 amps at stall is not that much compared to many of the alternative motors available or even a 12v gold which stalls at more than that. If geared correctly I doubt you would have any trouble with a 25 or 30 amp continous rated speedo.
Ian is right in most bots drive trains they will hot, very hot is pushed to hard.

As for needing sanyo C cells to run them this is rubbish, Thuggernought runs 2Ah sub C sanyos on a pair of golds at 24V and we have had no trouble with them and will easily run 2 fights without charging and they are only ever warm after a bout never hot.

The charger issue is a problem but can be over come with 2 18v packs or even 3 12v packs.

The golds in thuggernought are not worked to hard and we are thinking about 30/36v the main problems we have are - new batteries (want matching packs and need a different shape), More weight (We are a bit under but n ot enough) and the fact the electronise speedos are rated to only 24v and I personaly would not like to run them over 30v.

[robjones]

Using gold motors

I agree Sam, Ive tested the golds in a bot and on the bench and you definately can run the 24v at 36v. I used the H5 speedcontroller @ 36v on mine. Ive also driven BlacknBlues spinning bar on a 12v gold @ 24v and whilst the motor was very hot the subC NIMH cells were only warm. The only disadvantage of the golds is weight and cost

[knightrous]

Using gold motors

The other problem alistair is that at 36v they will be pulling nearly 40amps at stall. Thats alot of current and will need a Big speedo to deal with it.

40 amps is piddly. Weve run our 12v winch motors (2.25kg each) in our featherweight Torque 2 Me and they will draw a good 100+amps when we sit on it riding around. We power this all from a single 7AMP DOSS SLA which is 2.6kg. We use an IBC controller and it handles this fine.

In reguard to the gold motors, drill some 8mm vent holes in the case, add some suppression caps if your dont already have them, gear them down more to get the same speed as you would want for on 24v and use 3 x 12v NiMH 3000mAh packs. I dont know much about the H5 controllers, but they sound like they will do fine.

Pushing the limit is all apart of Robot Combat

[storm]

Using gold motors

LOL - I dont think youll be getting 200 amps out of a 7Ah SLA

I think you may find that in that circumstance your battery is providing you with more than a little bit of current limiting !

Ed
http://www.teamstorm.comhttp://www.teamstorm.com