Massacre - Build Diary

**Eventorizon** · 21st March 2014, 15:59

Ideally you would sandblast the base and then paint/laquer it in some way but I am sure an orbital sander with some high grade paper on it would give a similar result.

Looking good though, simple design and it should be quite robust. Those GR01's will be locked down solid.

**mrsam** · 21st March 2014, 16:12

It looks really good but i'd actually be worried about the Gimsons been held in too sturdy as i believe some builders have had problems with shocks going straight into the gearbox as there's little/no flex to absorb some of the impact

**harry hills** · 21st March 2014, 16:53

Yeah I guess so. If they break, I'll deal with it then and there. Nothing much can really be done about it now.

**harry hills** · 22nd March 2014, 17:33

Thanks for the suggestions Alex, in the end I just hit it with a sanding block and some elbow grease. Still a little ways to go.

Also gearbox is semi together.

you can see gear and pulley related things happening here.

Got the gears to mesh fairly well. Gave it a blast on small 3s. I'm really pleased that this has somehow worked.

**Mega Masher** · 23rd March 2014, 20:10

Harry, why did you choose an inrunner rather than an outrunner?
Surely an outrunner would have would have more torque

**harry hills** · 24th March 2014, 08:39

Because high speed. This meant I could really gear it down, I have like a 10:1 or so reduction in this so the end speed is reasonable (still too fast imo) and the weapon itself has plenty of torque which should give me respectable spin up. Inrunner also is more enclosed so I don't have to think so much about crap getting into the motor so much. Not that this is much of a problem?