The winch servo used in The Disassembler is in my opinion is the simplest (and effective) weapon to make for the sportsman class.
*This will be filled in over the next few nights*
Why a winch?
There is many ways to make a lifter. Lots are much sleeker, lighter and more effective than a winch. But when it comes down to simplicity the winch setup is still quite a nice package. It contains a very high reduction gearbox, a powerful motor, an assembly to keep them all together and a controller.
The Bad: As always you don't get everything.
Unfortunately the motor is quite heavy. It also has very low inductance leading to big voltage spikes and is quite hungry for current. The cast bits of the assembly are a little fragile and it needs limit switches.
2. Stripping the winch
The winch comes packaged with a bunch of gear some of which is useful and some that is just filler.
Things to do when you get your winch:
- Remove the Cable
- Remove the cross bracing bars on the output section
- Set aside the controller box
- Use one of the dome nuts on the cross bracing bars to replace the locking knob on the winch.
- Replace the M6 bolts that hold the cable drum to the gearbox. (The Chinesium bolts tend to shear)
Some early pics of the setup
3. Programming the Controller
4. Mounting your weapon arm
5. Winch upgrades and recommendations.
Now build all the sportsmans. _________________ Steven Martin
Twisted Constructions
http://www.botbitz.com
Last edited by marto on Sun Jun 12, 2016 10:46 pm; edited 4 times in total
Tue Jun 07, 2016 9:58 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
Where can you get these winches for a good price? _________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
Tue Jun 07, 2016 11:48 pm
evil_steve
Joined: 06 Sep 2015
Posts: 304
Location: Adelaide, SA
Awesome, can't wait for you to fill this out. After talking to you about it on the night I was going to bug you this week for more details
Wed Jun 08, 2016 12:08 am
leithal_weapon
Joined: 06 Jun 2016
Posts: 35
Location: Canberra
Im interested in this too...
Wed Jun 08, 2016 12:12 pm
Glen Experienced Roboteer
Joined: 16 Jun 2004
Posts: 9481
Location: Where you least expect
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
That would be what everyone is thinking! IMHO, you need an MCU to interpret the radio PPM signal, manage two limit switches and output PPM to the ESC. _________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
Photos are looking interesting - I just ordered one of the winches to fit on an old four wheel base that's lying around. _________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
Mon Jun 13, 2016 12:24 am
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
This is a repost of the rough gearbox and motor dimensions:
_________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
Joined: 06 Sep 2015
Posts: 304
Location: Adelaide, SA
I've never played with arduino stuff before, so sorry about the newbie questions:
- hardware wise, do I just need the arduino nano and a micro USB cable? (plus obviously the rest of the bits on Steve's list + cabling etc)
- there seems a bit of variability in price, would both
this one
and
this one
be identical / the right thing to buy? (I'm guessing the price difference is Australian vs Chinese seller, but would like to be sure before ordering)
- the nano seems to be a discontinued model - is there any benefit/disadvantage getting a micro instead? What about something like the A-Star 32U4 Micro which lists itself as Arduino compatible?
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