When you can have a 4kg disc instead
But seriously, I would test your uber fast discs before competition at full welly. You may well find that if the dimensions arent right you will have an exceptionally heavy grinding disc.
Thats why when it comes to extreme RPM, I prefer a bar to a disc... OK, not the most aerodynamic option (But with a well geared LEM-130 behind it .. what the hell!!) but it sure gets around the engagement problem! :wink:
Lol I know its not technically allowed in the rules but you could shape the bar in a such a way to create a negative pressure and sucker yourself to the floor, would be interested to know just how much down force you could create with a LEM
updated pic of prodigy evo on profile, spin up and smashing something up vids will be online shortly. still work to do not finished yet but will be just in time for dec29th
(Message edited by ady on November 11, 2007)
Very nice Adrian, but I do have one question, what is the A frame that supports the disc attached to with regard to chassis / bodywork? (serious question)
Also is that a solid state relay hiding in the back right hand corner?
Gary, Im not sure how much suck you could extract, but with a bit of clever design it could be a serious amount!!
i see where your coming from Geoff, no no, the a frame is mounted onto a chassis, underneath drive, weapon gearbox etc.... not easy to see on that pic, yes that is a solid state realys you see in the pic
There are 2 Solid state relays powering 1 motor each for the disk. They are the SY4086 SSRs that the Australians use to power their magmotors.
Geoff, the A-frame is actualy a bottom part that connects the drive to the weapon, the top is bolted on with sufficiently strong bolts.
The axle of the disk is welded in the bottom frame and centred and bolted in the top frame.
To the back of that A frame, a steel spine is welded and used to bolt on the weapon gearbox and the drivetrain main brace-steel angle- is welded on that.
The weapon gearbox ,what was a solid billet of ali, acts as a stiffner for the spine between A frame and Drivetrain, not unlike the engine in the better hi-power motorbikes.
The armor, constructed according to Adrians wishes is bolted, with a lot 8.8 grade bolts, to the bottom A frame and the steel angle what forms the main brace of the drivetrain. The top plate of the armor can be removed seperatly
For ease of maintenance the weapon gearbox can be removed without undoing the bottom and/or side armor.
All welds TIG welded, and all the bolts used to connect top and bottom A frame, as well the weapon gearbox are 10.9 quality.
Adrian, the power of this thing is so, I wont try to smash something without me far far away with the remote in my hands. The tests at my workbench scared the bejeeves out of me. And thats just spin-up and down.
its ok Mario, if anything gets damaged it will be an old camcorder on a stand in the corner of the room, i will be watching on a tv screen linked to the camcorder. without putting it into an arena it was the only safe idea we came up with.
360 = FBS?
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