Fenrir256
(Joe Brown (Not the Joe Brown you're looking for))
1
Hi All,
Long time follower, first time poster and builder. I’ve been following and spectating for a while now watching BBB and NHRL events online (Trying to get to a BBB event in person as soon as possible just trying to fit it around crazy work commitments) and have finally decided to start committing to trying to build a bot.
So far I have been messing around with a few designs in CAD I’ve got a couple of ants and beetles in the works. After many, many redesigns I’ve final reached a point were I feel I can throw the first out to you all in the community and get some thoughs.
So here we are initial cad for a vert spinner with the working name of P.I.T.A. (TBC)
So ideas and specs behind this one are.
A Peter Bar style inspired dual blade asymetric spinner with blades of 6mm Hardox and driven by a 2814 T-motor outrunner.
Brushless 1806 based brive system, with the plan to run on Unmanned Tech’s Chaos ESC (I’d be interested to know if anyone has any experience with these?).
HDPE main chassis and TPU outer armour package and an as yet to be finalised wedge on the front potentially titanium but TBC.
And finally running a GNB 3s 850 HV LIPO to power the whole thing.
I’m looking forward to seeing how this and a few other designs I’ve got in the work progress and will of course provide updates as they do. Not sure if P.I.T.A. will be the first bot built as I’m also working on a beetle flipper too which will feature on this thread once its had a few design changes, but hopefully I’ll be able to get a bot to events in the not to distant future.
Thanks for reading and I’m totally up for answering any questions anyone has.
id be slightly worried about it getting caught on its side and the armour not allowing the wheel to touch the floor in that positions but only one way to find out i guess
whats your weapon stack-up like? looks like a tpu core/pulley
1 Like
Fenrir256
(Joe Brown (Not the Joe Brown you're looking for))
6
Yeah that has been one of my concern with getting stuck in certain positions and ground clerance (seems a classic theme). I’m planning to print a temp build out of PLA to see about fitment and these kind of thing before commiting to the final design fully. You know done loads of redisigns so far, few more wont hurt.
Yes you’ve hit the nail on the head with the weapon stack, this is where the inspiration from the Peter Bar kit has come in. TPU core sandwiched to the blade using hex standoffs. Will run on a shoulder bolt dead shaft with the needle bearings also sandwiched in the stack.
Fenrir256
(Joe Brown (Not the Joe Brown you're looking for))
7
Well finally had some time today while sitting on a train to sort out the last little bits of this current design, the big one being a front wedge. Currently designed out of 2mm titanium, with the offset bolt holes in it just allowing for a slightly cleaner mounting method.
This brings me really to the point with this design where I just need to start making and see if it works. Hopefuly this will be over this summer when I’ve got a bit more time away for work and back home. Might have to work on my ant design in the meantime.
