Gimson Robotics

[ewan]

Re: Gimson Robotics

You should be OK going from 18V to 22.2V (more when freshly charged of course), just ensure there's good airflow around the rear of the motor and if you're worried about current spikes damaging your circuitry then you could fit some fuses.

[Eventorizon]

Re: Gimson Robotics

Taking a step back to the GR01's, could you run a single motor off one of Botbitz 25A escs? The voltage and ampage seem fine but I am just interested in a second opinion as they say they detailed as beetle controllers.

[Anttazz]

Re: Gimson Robotics

ScotBots are having trouble running anything off of them. When they do work they've worked fine for drill motors on 12v though, the motors cook long before the ESC does.

[ewan]

Re: Gimson Robotics

I couldn't say an absolute yes or no as I've never used them, it's also difficult to know whether the 25A rating is a realistic continuous capability or just the 'hobby' rating. This is especially true as the controllers are changed from brushless to brushed so are using fewer of the fets for switching and to dissipate heat. Then again the 85A brushless > brushed controllers have proved to be very hard wearing indeed.

[shakesc]

Re: Gimson Robotics

reading the posts on hacking it seems that the TZ85A are robust and the hack is mature
The 25A there seems to be more variety of devices and s/w is not as mature

[maddox10]

Re: Gimson Robotics

The BotBitz BB25A-esc I have used in Eclipse seems not as capable nor sturdy as the TZ85 units.

If used in a robot I advice rigorous shock mounting and hotglue to secure the large caps.

[ewan]

Re: Gimson Robotics

24V 'Speed 550' Motors and 24V GR02 sets are now available through the website. As you will notice there are still further images and content to come but key product details are all there.

The 24V 24:1 ratio GR02's in particular would make top-class drive motors for featherweight robots with wheels up to 100mm, the higher operating voltage meaning power output and efficiency will surpass any normal drill motor while the gear ratio enables impressive top speeds.

If you've got any questions please let me know.

[Eventorizon]

Re: Gimson Robotics

Your website appears to be down Ewan, if you don't know.

[ewan]

Re: Gimson Robotics

That's odd, still not working for you? I've not noticed any downtime and my host hasn't reported any faults today.

[Max]

Re: Gimson Robotics

Works fine for me

[Ellis]

Re: Gimson Robotics

It's fine here too. Think it might be you Alex! :P

[Eventorizon]

Re: Gimson Robotics

Works now... no idea what that was; said it could not locate the server.

[craig_colliass]

Re: Gimson Robotics

Ewan
I was wondering if it would be a good idea, if you made available freewheel mounts made up of some of the bits you use for the GR02 drives so if some one wanted a robot with 2 wheels driving but wanted 1 or 2 wheels to stop the back of the robot dragging on the ground. They could get the wheels mounted on a free wheel hub made of the shaft bearings and gearbox shell. this would mean the fitting of the freewheel wheels would be as easy as the fitting of the motors. this would make robot construction easy.
What do people think?

[Eventorizon]

Re: Gimson Robotics

That would be great! I have been planning to switch to the GR02's at some point but only run 2 with belts to drive the front. If he does that then I wont have to make custom mounts.

[typhoon_driver]

Re: Gimson Robotics

Sell the gearbox cases on their own. I have plenty of drill motors but the plastic gearbox is the weak point.