Shoulder Hubs - weight reduction - 1.0

When I was building R5...... way back, weight wasn’t a thought I had really considered. Making him as solid/sturdy as possible. So lifting him into the back of a car to attend events never occurred to me that it would become a thing lol.

Roll on a few years now and 'weight' is definitely an issue. As the legs are not to much of an issue, the feet and the shoulder hubs are. So I've made a start to reduce this weight some.

I marked on the hub an area that could be removed without structurally compromising them. I need to keep the holes for the bolts, to help prevent possible stress on the end fixings inside the wood.

Using my coping saw, I fed the blade through one of the holes already drilled in the hub.

It was a bit to late in the evening to try to use the jigsaw, hence using the saw. This took about an hour to cut out!

But the weight reduction results speak for themselves.

Weight was 936 grams, after removing the centre...... now 555 grams.

I just need to cut out the second hub next.

R5's weigh's how much!?!?!..............update 2015

Almost a year ago I went and weighed up R5's parts.

Link to previous post dated 1st March 2014

I needed to do an update for reason's that will be made public in a few months time.

His Body, Leg's and Head [Dome] haven't had that much done, but his feet now have motor's etc and also he now has two 12v & a 6v battery, plus extras etc.

He now weighs in at 55 Kg's!!

Not an easy thing to be lifting into the back of my car lol.

R5's weigh's how much!?!?!

Centre Foot & Leg
Way back in 2012, after finishing his centre foot (leg) build, i weighed it.
The weight was 4Kg's [foot shell, internals inc. wheel and the whole of the centre leg]

The recent upgrades i've made, inside cut-out of foot shell [see above], new lighter tho larger scooter wheel; internal mounting for wheel and brackets to connect to centre leg, may alter the final weight of the centre foot, but I can't see it being by much. So for now I'll use this weight.

Legs
I first weighed both leg's. Fitted with their shoulder disc's and bolts in place, they both weighed excatly the same.....5.5Kg's each!

R5's Dome
I also re-weighed R5's dome. Before the 3 recessed boxes or his dome cone were done, it weighed 4Kg's. After, with the cone & everything else added, eyes, rods etc, it now weighs 6.5Kg's.
I was a bit worried at first, till I read about others (aluminium) domes and their weights! :)

Feet
The feet, which are non motorised just scooter wheels at present, fitted with Battery Box & Braided hose, weigh in at 3.0Kg's each.

R5D4 Body
OK, here goes! The body, without batteries or anything......as he doesn't have electrics yet, weigh's 14.5Kg's.


Total weight of R5 at this stage is...........42 Kg!

Build update, work done last week....

Rear Utility Arm socket:

Drilled locating holes in the perforated metal. Primered it, then sprayed it up Black.
Photo's to follow.

Octagon Port:

Cut down the angle bracket and drilled a new fixing hole, that will be used behind the Octagon Port.
Photo's to follow.

Skin:

Applied wood filler around the bottom of the skin/base to fill in gaps.

Also 'grooved' out the side panel, next will be to do the slots.
Photo's to follow.

R5D4's weigh's how much!?!?!

Been meaning to do this for a while now, so thought I'd weigh R5's built bits made so far.
Centre Leg & Foot complete =  4Kg's
Main Leg No1, with no Foot = ??
Body, with no head = ??