How could I Improve pt 2

[knightrous]

Re: How could I Improve pt 2

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]

Re: How could I Improve pt 2

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

[joey_picus]

Re: How could I Improve pt 2

electro magnetic clutch clutch?

[corsair_lightning]

Re: How could I Improve pt 2

Redone... Again...

[kodster]

Re: How could I Improve pt 2

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...

[corsair_lightning]

Re: How could I Improve pt 2

I can't help it. I just want some way to have both a flipper and drive boost in the same robot.

[joey_picus]

Re: How could I Improve pt 2

Have you given any thought as to why real life robots tend not to have a flipper and drive boost in the same robot?

I would do...before coming up with a design ask yourself how much this idea has been used in real life - and if it hasn't, think why. If something offered a definite advantage half the robots competing today would use it.

[daliad100]

Re: How could I Improve pt 2

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.

What about syncromesh? That should work on the drive perfectly well but the weapon would probably be way too slow to respond due to the time taken to match speeds.

[knightrous]

Re: How could I Improve pt 2

I can't help it. I just want some way to have both a flipper and drive boost in the same robot.

@Mark: I don't think you'll have enough weight to do both. Infusion is pretty boarder line on the weight limit with just the sprinning rim, KE boost drive and a wedge. I just cannot see where I would get the weight to add 20kg of parts/mechanisms to incorporate a Warrior SKF flipper into it.

If you so keen on having a boost function, why not look at a voltage boost. Run extra batteries that can be switched on for breif periods of time to overvolt your drive motors. IE: Run magmotors on 24v primary battery pack, have a secondary 12v battery pack wired up in series with a switch. When the switch is activated, the motor will now run from the 24v pack + the 12v pack, providing 36v. This will increase the motors powered 2.25 times and if it's used for small bursts, you can minimize the chances of burning the motor out.

@Jordan: Syncromesh don't like being meshed under load. In a car gearbox they are unloaded when you depress the clutch, they then mesh and line up the gears for a smoother change and then you can let the clutch out and transfer the power. 99.9% of cars made from the 80's onwards will have syncromesh in them, go for a drive an try to change gears without the clutch. It can be done by accelerating, lifting off and then trying to engage the gear when the motor revs fall to the revs of the gearbox, but 8/10 times you'll still crunch it.

[daliad100]

Re: How could I Improve pt 2

Whoops! I completely forgot about the clutch in the drive train.

I feel silly now :blush:

[joey_picus]

Re: How could I Improve pt 2

Don't feel silly Jordan, you're sensible enough to not actually try designing these things

[daliad100]

Re: How could I Improve pt 2

How much detail is necessary in a vapour bot description for mechanisms etc. ?

For you see I have some designs for robot weapons like an electric hammer robot and an electric flipper robot which both use snail gears (similar to John Reid's Beta but with gear teeth instead of chain). I was just wondering if I had to design it down to the last gear or if just the general gist of it would suffice.

[kodster]

Re: How could I Improve pt 2

As long as people have a general understanding of how it would work, I'm sure it would be fine, Jordan.

If people question it, then you can go into the long-winded description of it, lol

[joey_picus]

Re: How could I Improve pt 2

Generally if it gives you an advantage, be it through making something better or nullifying some weak spot in the robot, you describe it in as much detail as possible :P

[kodster]

Re: How could I Improve pt 2

Generally if it gives you an advantage, be it through making something better or nullifying some weak spot in the robot, you describe it in as much detail as possible :P

In this case, many people would scratch their heads and say 'what does that mean'? :P