Eggbeater

**Eventorizon** · 16th August 2014, 09:00

Where did you get your boring head from? Our mill is nice and accurate (besides the slop in the handle on the X axis, that is annoying!)

**harry hills** · 16th August 2014, 09:10

I got mine from RDG tools on ebay. Cheapest one and it came with some brazed carbide boring bars. eBay, RDG tools, ammadeal should do them along with most places that sell tooling.

What taper is your spindle? MT3?

**Eventorizon** · 16th August 2014, 13:48

Yeah, MT3. We have a chuck and collet system for it.

**harry hills** · 17th August 2014, 18:19

Stuff happened.

Stupid stepped shaft was booped out. Made a silversteel replacement.

Quickly made up a motor mount plate. Excuse the screws. I didn't have any hex countersunk M3 the right length

Assembly with the neat little standoffs from Elvis.

Carbon fiber base, HDPE rear armour.

**razerdave** · 17th August 2014, 18:33

That's so awesome! I do wonder if the connectors on the battery packs will take the current draw of the spinner and drive. Might be worth changing.

**harry hills** · 17th August 2014, 18:59

If it looks like it will be a problem I'll change them out.

**harry hills** · 18th August 2014, 16:19

First up

Span the thing. Good points and bad points.

Bad points:

-belts got warm (unsurprisingly) so stretched. This is why its flapping around in the video
-I'm loosing a several thousand RPM somewhere, probably because of belt tension but very annoying all the same. Hope I can fix that.
-One belt snapped on spin down of the first time. But as the second one was fine throughout all the testing can put it down to dodgy joints.
-30a ESC hella hot so switched to the HK own brand £7 lumptroller. Heavier but it didn't miss a beat.

Good points:

-Nothing exploded
-It span with no tension and one belt
-Motor makes noise to scare opponents
-£7 ESC actually worked.
-Batteries were not hot to the touch

Also bearings came for disc. Ended up having to bore out the bore of the hardox disc a little so that the shaft sat nicely through it and didn't add any friction to the setup. TIL rubbish brazed carbide boring bars can touch hardox.

heers.