How could I Improve pt 2

[daliad100]

To be honest with you, I think a dog clutch like the one in a car gearbox would work better in this situation over a double clutch because they're designed to engage at high speed unlike a gear.

[corsair_lightning]

Check my site for the latest stats.

I replaced the double clutch with a dog clutch(though I may reuse the double clutch should someone help me increase its reliability), and increased the known KJ count of the rim.

[joey_picus]

...couple of things Mark:

- Out of curiosity Andy put the figures for your ring through a kinetic energy calculator, and came up with a figure in the region of 350kj. This is not a good thing, with that much energy you are going to destroy just about any clutch you try and put that energy through, and if your weapon hits anything vaguely solid I'd be willing to bet the robot would never work quite the same again, the forces involved would break something - at best your weapon, at worst your entire chassis and drivetrain would be warped out of shape as well.

- I freely admit I don't know much about clutches, but I do know a bit - particularly about dog clutches - and I know enough to be 95% sure that you don't know what you're really talking about, like I said above with the energy you have trying to use any sort of clutch is only going to end in something being broken.

I'm almost certain that you just think this is a cool idea and haven't thought about the practicalities of it at all...sometimes it's best to go with simpler designs, time and time again you have tried to do complex designs and your lack of knowledge has completely ruined a good idea. I'd stay away from complex systems for now and just stick to simple designs that don't require much specialist thinking to understand and implement :P

[kodster]

I started out with a wedge that had a disc; it had crap stats and it came 2nd in VFT4 Pinball.

[corsair_lightning]

I modified it again. The main difference now is that the rim's speed is now 25% the speed it previously was. What would be the KJ count for that?

[knightrous]

I'd avoid using a dog clutch purely on the premise that they work in a very very rough and impacting manner. They are indeed using in race car gearboxes, but require double clutching and rev matching (The method of matching the motor rpm with the gearbox rpm by blipping the throttle during gear change) for smooth shifts (Requiring a high degree of skill!).

To make a dog clutch that will handle the forces your looking at will be quite heavy, and may even have issues engaging due to the differences speed differences between your kinetic mass and the drive/weapon.

For Infusion, I chose to use Electro-magnetic clutches (emc), these will slip to some degree, but are very reliable. Depending on the size/design, they can handle a fair amount of power. Most car air conditioner pumps have emc's that can handle 3-4HP loads with clamping speeds between 800rpm right up to 6000rpm. The Toyota SC12/SC14 supercharger units have emc's that handle 8-10hp (roughly the parasitic load from running these units on the motor), I have no idea how long they would last if your turning them on and off every few seconds, but they could be a possible solution.

[corsair_lightning]

The robot has, again, been updated with an EMC clutch.

[joey_picus]

electro magnetic clutch clutch?

[corsair_lightning]

Redone... Again...

[kodster]

Again, you're using parts without knowing how exactly they're going to affect your bot's performance...

Go simpler, Mark...pretty much everybody started out with simple designs...