Team Saint Robot Builds

[craig_colliass]

Hi Dave.
This picture may help,
IMG_1536.jpg


The procedures as follows:-
1/ cut disc with 3" cutter.
2/ drill out to 8mm, then tap 3/8" unf
3/ cut bike tyre long enough to go round disc, then cut down the middle.
(the tyre in the picture will do 2 discs)
4/Cut a buttress profile along one edge, (I used the side that was closest to the rim)
5/With 3.5mm*15mm wood screws fix on the tyre, I used a 2mm pilot drill for this bit.

Hope this helps, but I don't know if the wheels will work yet!

[Rapidrory]

Well I'll likely be there with a host of electronics tools in an attempt to keep the magic smoke inside my new speed controllers, so I'll give it a look whilst I'm there.

[craig_colliass]

IMG_1550.jpgIMG_1552.jpg

E-Knock is ready for this weekend for it's first test.

[craig_colliass]

[craig_colliass]

yes I have in the past argued about what is and is not a shuffle bot.



under the present rule Pilgrim is a shuffle bot!

[overkill]

The polycarb hubs could work well. I have been using polycarbonate hubs in Colson wheels for years and they have survived direct spinner hits and have never broken. It really depends on how thick your hubs are.

[craig_colliass]

I am thinking if I should, but the cost is quite prohibitive the motors alone would be £700 and this for a robot that would never win anything! (but that's not a major concern)

I would like to run it on steam but for the shows insurance sake, I think I would use compressed air I have looked into this for other projects,

The idea is basically a polycarbonate box with 4 spoked wheels lots of copper and brass rivets.
The engines shown have a reversing leaver that can be connected to servos for the steering so with 2 engines I could tank-steer the thing, do you think they would allow me a weight advantage for a steam powered featherweight?

[craig_colliass]

IMG_2026.jpg
IMG_2027.jpg
IMG_2028.jpg
Some pictures of the new project a pneumatic walker, this is going to take a long time to finish but you have to start somewhere.

The configuration is ATM 8 legs, 2 degrees of movement, 16 actuators and at least 2 on board compressors.

The pictures are of the function mock-up with mechanical valve control, and the next 2 are work in progress to make the leg patterns to get the shape and distance right before cutting 8 of them out of 20mm HDPE, at least that's the plan to start with.

[craig_colliass]

Thanks Rory I'm thinking of using a plastic coke bottle

BTW under the current rules this is a walker!

[craig_colliass]

OK the question is how much pressure can a 1.25Ltr bottle of pop take before it goes, well POP!!


IMG_2095.jpg

IMG_2096.jpg

The system I'm using on the walker is very low pressure (sub 50psi) so to save weight and increase buffer storage I'm doing tests.


PLEASE NOTE
I would not advise anyone doing this, without experience with safely using compressed gas!