Depending how good your tools are you could put ribs into the inside or outside of the holesaw and reduce some wall thickness in areas unlikely to take direct impacts
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YEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH

quote:

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Originally posted by dyrodium:
Depending how good your tools are you could put ribs into the inside or outside of the holesaw and reduce some wall thickness in areas unlikely to take direct impacts

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Hmm for teeth could you cut slots in the shell then heat it with blowtorch and bend it down?

Steve
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Steven Martin
Twisted Constructions
http://www.botbitz.com

quote:

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Originally posted by marto:
Hmm for teeth could you cut slots in the shell then heat it with blowtorch and bend it down?

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Woo, just when I was starting to think my HK order would never arrive, it does!

A pair of HobbyKing 8-10A BESC
A pair of Rhino 3S 360mAh LiPols
A pair of Turnigy Aerodrive XP 1826 2400Kv motors
A pair of Turnigy Plush 10A BESC
A Turnigy S3317M servo to use up the rest of the shipping weight
And bunch of foam wheels

Now have the parts to start hacking brushless for uMBX and to get Brainless running!
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https://www.halfdonethings.com/

Decided to start on some weight reduction which was an excuse to actually use my milling machine for more then an expensive drill press and on a material harder then plastic I haven't gotten around to buying any real tools for the mill other then a 3/5/10mm end cutters from mcjing. So I ended up g-clamping my year 12 metalwork project vice to the table and clamped the shell into that... Ghetto works untill I can buy a clamp set and a machine vice





And yes, I forgot to correct the orientation of the photos before uploading... just flip your monitor on it's side...
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https://www.halfdonethings.com/

Getting the weight issue under control


Got the milling machine cranking and put 3x 10mm wide slots near the wheel, then put 8x 6mm slots in the other spots. This brought the shell down to 46g from 58g, I also still have enough space to put 4x 6mm slots to reduce some more weight.


Chucking all the bits on the scales, it's just under weight, I need to trim 3g off the second carbon fibre panel, put the accelerometer, LED, power transistor, the teeth and a wheel hub. So with a little more reduction, everything should fit.
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https://www.halfdonethings.com/

nice invest in some collets or a milling chuck hawww dangit the difference is uber

how much difference is there if you sand off the paint
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www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

I'll buy the fancy shit when I have it mounted on a bench and have a vice that has square jaws and isn't held on with G-Clamps

I really want me a rotary table, but so expensive...
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https://www.halfdonethings.com/

yeah i really need one as well. opens a whole world of opportunity for new parts one day XD
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www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

spotted a 5kg scale at target for $30 btw, measures in single grams. its red so it like weighs faster n stuff
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Mechanical engineers build weapons, civil engineers build targets

quote:

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Originally posted by Valen:
spotted a 5kg scale at target for $30 btw, measures in single grams. its red so it like weighs faster n stuff

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Next time try a Diet Coke bottle.
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So even the rain that falls isn't actually going to fill our dams and our river systems

Lol

Started on Little Ego 2.0 tonight.

Name: Little Ego 2.0
Weight: ~150gram
Length: 80mm
Width: 100mm
Height: 16mm
Drive: Pololu 100:1 gear motors
Controller: HK-T6A RX + Pololu B-328 controller
Battery: 2x Turnigy 2S 160mah LiPo
Weapon: Corona CS-929MG servo power lifter/flipper/clamper
Armour: HDPE monoblock chassis + 1mm carbon fibre.


I'm going with the construction technique of just milling slots for components and press fitting them into the chassis.

Still ghetto'ing it with the milling machine...

Couldn't get the G-clamps to material without them running into the Y-bed, so I just make a clamp kit out of some billet I have laying around
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https://www.halfdonethings.com/