360 - mini hypnodisc

[maddox10]

Drilling out a standard batterydrill pinion ain't an easy job. Pure hardmetal cutters are the least you need, and then the chances of succes are limited. The aussie forum has quite a few threads on that.

I myself prefer to make gearboxes with standard, affordable mod 1 gears.
The pinion I prefer is the steel Z12 Mod 1. You can buy those easy enough over the net.

[overkill]

I use a straight flute solid carbide drill for enlarging pinion bores and it works extremely well. I can find some links if anyone wants to try them.

[maddox10]

Nick, PM me those links, thank You.

[PJ-27]

I can see holding the gear being the biggest issue.

[Liftoff]

I don't think its possible to drill them unless its clamped in a vice on a proper pillar drill or a lathe...with lots of coolant.
The material is probably cast, its very hard and gets hot quickly. I cracked two pinions while drilling them on a lathe with a Co twist drill. Used a spade drill and reamer for the third gear...it worked

[Mouldy]

I plan on just re using my banebots gears...

The easiest way to get the gears would be to buy some gear stock the right size, part off a load of them, get em hardened and sell them.

[overkill]

I can see holding the gear being the biggest issue.

Here is how you drill out the gears:



I use an ER-32 collet chuck to hold the gears in my Seig lathe. The carbide drill cuts thru them like butter and I just used a little WD-40 as lube & coolant.

[geeza]

That's what I would do too nick.

[geeza]

Just received some 775s from banebots. They appear to have slightly different cases to the originals, but will check all dims out and report.

[Mouldy]

Nice one ed- when did you order them?

[geeza]

About a week after the champs.

[Mouldy]

Good news is that my parcel its on its way from banebots- so its looking promising that there still in buisness...i've also ordered some slightly different wheels to try as im getting bored of having to clean them after every fight.

Bad news is that according to the tracking info from USPS i'm being sent a bill from customs lol

No idea where my robotmarketplace order is though...didn't get any tracking info from them....

oh yeah... and as for an update... 720 is going back to its 2013 spec/complete spare robot as there's no rules against it and new 720 known as 722 will take its place next year

[Gabe01]

Haha! I knew the two robot thing would catch on

[harry hills]

And to think I felt like a flash git for having a spare bar lol

Also, two 720's would make an awesome 60lb clusterbot

[mrsam]

720 as a spare robot? That's like the empire calling the Death star there spare super space station