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  Topic: Jolt & friends - Team Overkill - NSW
Nick

Replies: 8579
Views: 1222231

PostForum: Builders Reports   Posted: Fri Feb 23, 2018 7:39 pm   Subject: Jolt & friends - Team Overkill - NSW
Lightweight:

The switch and wiring harness is almost finished - just the power light connector to solder on. That means there is a really good chance of a power test over the weekend - really looki ...
  Topic: Jolt & friends - Team Overkill - NSW
Nick

Replies: 8579
Views: 1222231

PostForum: Builders Reports   Posted: Thu Feb 22, 2018 10:26 pm   Subject: Jolt & friends - Team Overkill - NSW
The switch progress is good: the copper bars are glued in securely and line up so the screw goes through them. The mounting holes are drilled and tapped and the switch is all mounted:

http://www.ns ...
  Topic: Jolt & friends - Team Overkill - NSW
Nick

Replies: 8579
Views: 1222231

PostForum: Builders Reports   Posted: Tue Feb 20, 2018 7:42 pm   Subject: Jolt & friends - Team Overkill - NSW
The "ultimate" power switch:

The power wiring for the lightweight has been givving me all sorts of problems; too bulky, ugly, too stiff, etc. After several failed attempts, I have come up with the ...
  Topic: Micro Magnum, Team Magnum, NSW
Nick

Replies: 665
Views: 39352

PostForum: Builders Reports   Posted: Sun Feb 18, 2018 6:13 pm   Subject: Micro Magnum, Team Magnum, NSW
The two places I use are

http://www.dmgengineering.com.au

http://www.aquacut.com.au/index.html
  Topic: Micro Magnum, Team Magnum, NSW
Nick

Replies: 665
Views: 39352

PostForum: Builders Reports   Posted: Sat Feb 17, 2018 10:09 pm   Subject: Micro Magnum, Team Magnum, NSW
I haven't heard of the explanation for the laser-cut hole diameter VS depth but most places say they can't do it. I got some small antweight Ti blades cut with waterjetting, which generally doesn't ha ...
  Topic: Micro Magnum, Team Magnum, NSW
Nick

Replies: 665
Views: 39352

PostForum: Builders Reports   Posted: Sat Feb 17, 2018 9:22 pm   Subject: Micro Magnum, Team Magnum, NSW
OK, so the motor is an out-runner with a 3mm shaft sticking out of the can? On most out-runners its not hard to replace the shaft with a longer one.
  Topic: Micro Magnum, Team Magnum, NSW
Nick

Replies: 665
Views: 39352

PostForum: Builders Reports   Posted: Sat Feb 17, 2018 4:43 pm   Subject: Micro Magnum, Team Magnum, NSW
How is the disk fixed on to the short shaft? I think its going to come off after a couple of impacts if it is only pressed on.
  Topic: Micro Magnum, Team Magnum, NSW
Nick

Replies: 665
Views: 39352

PostForum: Builders Reports   Posted: Sat Feb 17, 2018 4:37 pm   Subject: Micro Magnum, Team Magnum, NSW
You can't use thicker Ti to get the right weight in a bar? I could probably find you a suitable piece.
  Topic: Jolt & friends - Team Overkill - NSW
Nick

Replies: 8579
Views: 1222231

PostForum: Builders Reports   Posted: Tue Feb 13, 2018 8:04 pm   Subject: Jolt & friends - Team Overkill - NSW
More fun with carbon fibre:

I can't find any more design issues with Jolt's electronics module, so I ditched the MDF prototype for CF:

http://www.nswrfc.org/Nick/P2131883.JPG

Its a little dif ...
  Topic: Jolt & friends - Team Overkill - NSW
Nick

Replies: 8579
Views: 1222231

PostForum: Builders Reports   Posted: Mon Feb 12, 2018 9:20 am   Subject: Jolt & friends - Team Overkill - NSW
LOL that piece of ali sheet has been used for two other projects already - will drill out some holes to make it more used looking. Maybe some random pop rivets and a splash or paint too.
  Topic: Jolt & friends - Team Overkill - NSW
Nick

Replies: 8579
Views: 1222231

PostForum: Builders Reports   Posted: Sun Feb 11, 2018 11:35 pm   Subject: Jolt & friends - Team Overkill - NSW
Belt tensioner:

In the test rig, its easiest to move the bearing block to tension the belt but that isn't practical in a bot. It needs a movable tensioning roller or 'back-breaker' pulley like this ...
  Topic: Micro Magnum, Team Magnum, NSW
Nick

Replies: 665
Views: 39352

PostForum: Builders Reports   Posted: Sun Feb 11, 2018 7:50 am   Subject: Micro Magnum, Team Magnum, NSW
that could also be an issue - does the motor pulley have side cheeks?
  Topic: Micro Magnum, Team Magnum, NSW
Nick

Replies: 665
Views: 39352

PostForum: Builders Reports   Posted: Sat Feb 10, 2018 11:04 pm   Subject: Micro Magnum, Team Magnum, NSW
My guess is the idler wheel being too narrow and not having cheeks to keep the belt in place.
  Topic: Jolt & friends - Team Overkill - NSW
Nick

Replies: 8579
Views: 1222231

PostForum: Builders Reports   Posted: Sat Feb 10, 2018 10:34 pm   Subject: Jolt & friends - Team Overkill - NSW
I didn't even notice which way the blade was on in the photo - you are quite right and that is the way Scissorhands had the bar with the teeth facing down.
  Topic: MBX - Team Knightrous - QLD
Nick

Replies: 98
Views: 29084

PostForum: Builders Reports   Posted: Fri Feb 09, 2018 7:43 pm   Subject: MBX - Team Knightrous - QLD
So how did it turn out? I have been saving that trick up for ages - it should do a good job in theory.
 
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