New HW design - Omni Wheels and 30kW spinner

[TechAUmNu]

So recovering from the shell shock of Robot Wars being in 7 weeks...

I have been working on the armor design and weapon.

Armor Plan.png

I am struggling to find a way to protect the skateboard wheels that doesn't leave large areas of armor flapping in the wind.

This is the idea at the moment.

There is a 8mm aluminium plate that forms part of the chassis, we then shockmount a 5mm hardox400 plate to it and weld on pieces round the side at 45 degrees, this should form a strong shape and help to deflect any spinners that attack us before the weapon is spinning. It also helps defect any axe/hammer blows from hitting the ring and potentially bending it.

We will weld 2 10mm hardox400 teeth to the ring which are bent at 45 degrees to defeat any flippers, this plays with the angled armor to make it hard to get under us without being hit. It should also hopefully mean we hit any spinners either horizontal or vertical in a way they are not built for.

Any thoughts?

[TechAUmNu]

Anyone?

[typhoon_driver]

10mm hardox teeth will bend on the first impact. I'd thicken them up.

It's difficult to tell how you have positioned them but I'd take a look at the teeth on Typhoon 2. Two big chunky main teeth and then two smaller ground skimmers.

As far as your 5mm hardox goes, bending it around into a ring will be somewhat of a nightmare unless there is some tooling you have to hand that we aren't aware of?

With this design you have to remember that you are attempting something that has rarely been done and even then it's rarely been done well so it's experimentation as much as anything else.

[overkill]

The angled 5mm armour skirts would need a fancy multi-axis rolling machine or a large hydraulic press with a custom jig in order to get the cone shape. The option of welding many small tabs together to simulate the cone shape is much lower-tech but all that welding is going to destroy the heat treating. I'd go with a vertical ring; its going to be MUCH easier to fabricate.

I'm no expert on HW armour, but if 5mm hardox is just enough for featherweights, then a HW spinner is probably going to rip it to shreds, particularly if there is an unsupported edge it can catch. The best defence is the massive ring, even when it isn't spinning; I would try to keep the 5mm armour recessed behind that as much as possible so that vertical spinners can't get at it so easily.

I don't think the angled teeth will make much of a difference to other spinners. The lower tooth is going to do all the work against wedges and sloped armour - it could be very effective if it's built strong enough. How about offsetting the upper & lower teeth by 90 degrees around the ring? That may reduce warping and loss of hardness by spreading out the welding.

[TechAUmNu]

Thanks for the advice guys!

I will switch to a vertical ring using the material left over from the main ring 35mm. The reason for the rather flimsy armor there is to stop the ring getting mangled like The Ringmaster, although their ring wasn't hardened. I would rather a piece of armor gets mangled than the £1000 ring.

And split the teeth so we have 4 total and increase them to 35mm. We need it to be the same on both sides in the event that we get flipped and to help balance the ring. I really don't want any teeth that go straight out from the ring, since if one of those gets hit by a v. spinner it will probably bend the ring and throw us flying at the same time.

I realize this is all uncharted territory, so it's going to be really interesting what happens! Hopefully we get picked...

[TechAUmNu]

Here is a quick update on our progress over the last few months. Noticed I hadn't updated this since October!

DSC_0327.JPG17239658_1688691078095523_2679642319212019410_o.jpg2770501312842007593-account_id=1.jpgDSC_0395.JPGIMG_20170206_172318.jpgIMG_20170206_175007.jpg17039145_1683932831904681_8400263985893796950_o.jpg17311092_1692508957713735_7212574863187734195_o.jpgIMG_20170317_174951.jpgRing_assembly_v96_Ring_armor_aluminium_15mm_v9_2017-Mar-02_12-41-21AM-000_CustomizedView44511069.pngRing_assembly_v96_Ring_armor_aluminium_15mm_v9_2017-Mar-02_12-55-03AM-000_CustomizedView16209076.jpgcontact_wheel_2017-Apr-01_07-49-29PM-000_CustomizedView8180484772.jpgDSC_0420.JPG

[Pinski1]

Error 404: Ground clearence not found.

[mackemforever]

It looks pretty cool although I can't help but think that it could potentially be an absolute nightmare to keep running and fixing it up between fights if it sustains any damage will be next to impossible.

[overkill]

I like those wheels! Any chance of documenting the build process?

[TechAUmNu]

It looks pretty cool although I can't help but think that it could potentially be an absolute nightmare to keep running and fixing it up between fights if it sustains any damage will be next to impossible.

We have spares of every part and the armour is replaceable. So shouldn't be too bad.

Also to take it apart the entire top or bottom comes off and you can access everything. Which makes it significantly easier to replace parts than a welded design.

[TechAUmNu]

I like those wheels! Any chance of documenting the build process?

Sure thing!

[TechAUmNu]

Error 404: Ground clearence not found.

We had a few comments about that already, we are going to move the wheels out a bit to give it 10mm.

[R9000]

What's the yellow goop? Liquid silicone?

[TechAUmNu]

What's the yellow goop? Liquid silicone?

Its polyurethane rubber: http://www.mbfg.co.uk/polyurethane-r...rasion-pu.html

[bitternboy]

Let us know how grippy the moulded tyres turn out. Interested to see how effective self moulding can be.

Also very pleased to see this making it into the real world! Great job.