MichaelG92's Build Diaries

All things antweight

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Kyro
Posts: 145
Joined: Fri Jan 18, 2019 12:36 am

Re: MichaelG92's Build Diaries

Post by Kyro » Sat May 18, 2019 2:36 am

i do indeed... although i have also used the servo as one hinge and polycarb as the other hinge which means it has better support before adding some into the chassis

like so


Image

please ignore the spaghetti wiring and lazy painting overspray
Team Rocket Robotics
Esper(4wd flipper)
Mantis (2wd control bot)
Dominus (4wd flipper)
Twinzer (L&K) (cluster)
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Sometimes, i wake up grumpy... other times i just let her sleep in...

MichaelG92
Posts: 39
Joined: Sat Apr 14, 2018 8:10 am
Location: Surrey

Re: MichaelG92's Build Diaries

Post by MichaelG92 » Sun May 19, 2019 12:53 pm

I was tempted by the idea of using hinges Lima, but all the ones I found were too heavy. Where do you get yours from and how heavy are they?

Having had a look at other flippers what I've decided to do for ArmamAnt! is make a thin bar as in the photo, and then I'm going to design two separate "p" shaped attachments and slot them over the thin bits at the end. The top panel/flipper will be attached to the tops of the "p"s. Design is still a work in progress, depends on how it works I might do something similar for my other antweight flippers.

Image

Image

As for how to attach the servo arm to the flipper to open and close it, I'm still working on that. I'm attending the BBB event on the 16th June and I'm going to talk to people there and see what I can learn from them.
Michael - Team MG Robotics

Fledgling Surrey based roboteering team

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EddieJ
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Location: Dorset

Re: MichaelG92's Build Diaries

Post by EddieJ » Sun May 19, 2019 1:09 pm

That bit you have made there. At least double the thickness of it :wink: it will need to be stronger if it hinges the flipper.
(^ Says the guy who used M1 screws in his first bot! :lol: )
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MichaelG92
Posts: 39
Joined: Sat Apr 14, 2018 8:10 am
Location: Surrey

Re: MichaelG92's Build Diaries

Post by MichaelG92 » Sun May 19, 2019 8:07 pm

Will do! Like I said it's early days...
But the concept itself is sound enough?
Michael - Team MG Robotics

Fledgling Surrey based roboteering team

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LimaHotel
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Re: MichaelG92's Build Diaries

Post by LimaHotel » Sun May 19, 2019 9:23 pm

Image
Image

So here you can see the hinges I use (some bought from barnitts, others from a small hardware store. Amusingly one claims to be 3/4" and one 1/2", though they're the same size?) (edit: just measured. They're DEFINITELY 1/2".)
Either or, they're light enough that they don't register on my admittedly not great scales, and they've held up absolutely fine under my usage. You'll notice I've only secured one hole on each - that's because otherwise the nuts interfere with each other and it can't move closed. By offsetting the nuts (m2 and I did need to drill out the nail holes to 2mm to take the m2 bolts) it retains full movement.
As to your bar hinge - I believe T_Y did something similar with his Hello World? I'm not sure about his other flippers. But yes, it's a functional method of hinging your flipper.
Good luck!
Last edited by LimaHotel on Mon May 20, 2019 1:19 pm, edited 1 time in total.
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Kyro
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Re: MichaelG92's Build Diaries

Post by Kyro » Sun May 19, 2019 9:39 pm

i can also second that those particular hinges hold up pretty well to combat... the bot shown has one hell of a flip (gave a few bots a flying lesson at our little tournament) and suffered no issues...
although being brass they could possibly bend if it took a big whack from a spinner in the right spot, but for £1.40 a pair, it's well worth picking up a few spares... its better to have them and not need them than to need them and not have them...
Team Rocket Robotics
Esper(4wd flipper)
Mantis (2wd control bot)
Dominus (4wd flipper)
Twinzer (L&K) (cluster)
Remembering Rex (antweight cassuis)

Sometimes, i wake up grumpy... other times i just let her sleep in...

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