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Getting close to what I think will be the final version of Conker 3.
Version 3.10.5
Attachment 3702
4mm Hardox Front End, 2mm Ti Top, Bottom and sides, Aluminium 2014/7075 Chassis.
The weapon weighs 3kg and will do 7100 rpm at full speed. With a bit of help from david, I compared it to 720's drum at full speed and it has 14% more inertia; compared to 720 at 13'500 rpm.
Its also got 25mm of additional bite as its asymmetric so engagement will be pretty dam good.
Drive is a pair of Banebots 16:1 gearbox's with 18V RS775's, over-volted to 22.2V.
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Looking a bit tasty there.8)
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I'd put a spike or something on the side as it's currently very stackable against the side of the arena
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This happened a few days ago but Conker 3 now has 4mm Hardox on the sides and front and has ended up 900g lighter!
The CAD is a mess as it wasn't designed to be changed this much so its a bit of a hack job but its all there.
Attachment 3707
I am not sure what to do with the extra weight. I am tempted to thick up the Ti but I am also considering sloping the Hardox.
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always the first choice :)
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This is getting silly but here is Conker 3.12.0; still a work in progress.
Its a totally new CAD model but the machines dimensions and parameters remain near Identical.
Attachment 3708 Attachment 3709
As you can see, the 4mm Hardox sides are now slopped. What is less obvious is the Hardox plate underneath that bolts to the 20mm Alumec bulkheads. The front is now very strong! There is a 20x12mm Alumec bar running across the back and a similar one internally to stiffen up the chassis.
The Main bulkheads now extend all the way to the back of the robot. I need to work out what material I can remove safely from these to keep the weight down.
The Top and bottom Titanium panels are now 1mm thicker at 3mm.
This iteration will probably go over the limit as its the first of this format but by working out where I need the strength I can remove unnecessary material.
The electronics, drive and weapon remain the same.
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I mentioned this to Dave when we were discussing your design yesterday but you want to make sure that those front wheels are solid as hell. With a 2WD drum/beater the majority of the reaction force goes through the robot chassis and acts on the ground. With a 4WD setup, ALL the reaction force is going back through your chassis and into the wheels. Wanna make sure those are well supported with a good thick shaft holding them in place.
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Attachment 3710
Gary - You should be able to see in the pic. I have 2 bearings mounted into either side of the Alumec. The shaft is 20mm OD which drops to 1/2 inch for the Banebots mount. That should easily be strong enough.
Current weight is 13.337kg. Its missing the wring, the weapon belt and then all the bolts and the welding to hold it together. I think all that will weigh about 400g so I need to loose 200g from it somewhere.
Still got 3mm Ti on the top and bottom. I swapped out the Alumec bar that ran through the middle for a sheet of 3mm Ti so there is almost a box of Ti in the centre of the robot. That will be all welded together. Weapon is now on a 3:1 reduction so it will only do 5920RPM lossless but that should be more than enough when the weapon weighs 3.5kg!
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I did tell you that last night Gary lol
