Cherubim

**craig_colliass** · 13th May 2010, 16:00

Wiring up the lift motor, the motor is having the integral break fitted it is 24v the break is 12vThis seams daft to me but thatâ‚¬â„¢s what it has got!

The hub that will have the lifting arm on is a taper lock unit from Technobots.

The hardest thing to get right on the spur gears is the shaft centre distance so they mesh right I fluked this.

**craig_colliass** · 25th May 2010, 18:52

Fitted lifting forks

**craig_colliass** · 27th May 2010, 09:50

I ran the lifting mechanism this week I found the arm moved a little too fast and did not have the lifting power I was expecting this is the trouble when you use a motor from the scrapheap with no readable data plaque.

The drive ratio in total is 187.4999/1 this is not enough even though the lifting forks are only 300mm long. :shock:

So the spur gears are going, and a two stage chain drive will be fitted to get the ratio down even further to 583.33/1 this will probably be a bit too slow 5 seconds for a 90 degree arch, but from here I can increase the speed easily.

**RogueTwoRobots** · 27th May 2010, 10:00

Five seconds for 90 degrees lift should be alright Craig. By the time you've wedged the forks under an opponent and lifted for, say, one second, the chances are that your opponent's wheels will be off the ground and they'll be unable to drive away. You can then take your time and use the rest of the lift travel to tip 'em over

Looking good by the way.

**craig_colliass** · 28th May 2010, 18:55

Sprockets have arrived and are being machined next week hopefully.

Painting bits I hate this job the main chassis has lots of holes drilled for different things and every one traps the paint and when you are not looking starts a paint run.

Silver hammerite for the inside and blue smoothrite for the outside.

The new ratio will be 466.6666/1 this works out at about 4 seconds for 90 degrees. Should be ok.

**craig_colliass** · 5th June 2010, 10:51

Not much I can do until the sprockets are machined. here is the colour

**psycho_fling** · 5th June 2010, 11:01

thats looking good

will you be inter changing which hw you bring to an event or will you bring both???

**craig_colliass** · 5th June 2010, 11:27

Thanks

I will probably only bring one at a time as running 2 heavy weight robots on your own (Zackâ‚¬â„¢s help can be patchy sometimes) is quite hard,
I think only Trevor ran2 heavyweight robots at one time by himself.

If Mark (my elder son) comes then I will run two heavyweight robots.