pic: KING TeC Drivetrain Prototype - All Wired Up!

[AKSoapy29]

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[Abhishek R]

Any plans to put a bunch of weight on it when you drive it? It looks great, will we get to see video ?

[Gregor]

I really enjoy the invert CIM stickers.

I'm curious to see how the hex shaft collars on the axles hold up. I've never seen that done on a WCD before, but it seems like a nice way to reduce machining.

[Arpan]

Originally Posted by Gregor

I really enjoy the invert CIM stickers.

I'm curious to see how the hex shaft collars on the axles hold up. I've never seen that done on a WCD before, but it seems like a nice way to reduce machining.

Anecdote here, but we ran a virtually identical drive last year. They were okay, but we had to tighten them every few matches. We'll probably switch to clips or bolts this year.

[AKSoapy29]

Originally Posted by Arpan

Anecdote here, but we ran a virtually identical drive last year. They were okay, but we had to tighten them every few matches. We'll probably switch to clips or bolts this year.

We are just temporarily using the collars because we haven't had access yet to the machines in our school. We will eventually replace them though.


And yes, we will try and do a video on Monday

[snoman]

Looks sweet. What's the pneumatics do for you?

[Abhishek R]

Originally Posted by snoman

Looks sweet. What's the pneumatics do for you?

I believe it's probably for shifting, since there's just the one tank.

[AKSoapy29]

Originally Posted by Abhishek R

I believe it's probably for shifting, since there's just the one tank.

Correct, all the pneumatics do is shifting.

[Dukenator76]

What is the weight of it with motors and electronics and no battery?

[blazeflipper]

Very cool Gear boxes! Just curious what are your gear ratios and expected fps when fully loaded with 135ish pounds?

[nomad725]

What material did you use to mount the electronics on?

[llamadon]

Originally Posted by blazeflipper

Very cool Gear boxes! Just curious what are your gear ratios and expected fps when fully loaded with 135ish pounds?

Thanks! They are from West Coast Products.

The Ratio spread currently is 2.06, with calculated FPS at 7 in low and 13.5 in high. The drivetrain is currently unloaded (50 lbs roughly,) so we can't really tell between low and high.... They are both stupidly fast. We also purchased two different gear sets, and also pinions. We can configure the drive to the following speeds: 5.5/15 7/18 5.5/18 7/20.5 5.5/11 7/13.5 (low/high)

We'll see how many we have time to actually test.

Originally Posted by nomad725

What material did you use to mount the electronics on?

It is a perforated polypropylene sheet. You can find them online. McMaster Carr has them in stock.

[AKSoapy29]

Originally Posted by llamadon

The Ratio spread currently is 2.06, with calculated FPS at 7 in low and 13.5 in high. They are both stupidly fast.

Yeah, and the programmers capped the power to 80%!

[asid61]

Originally Posted by AKSoapy29

Yeah, and the programmers capped the power to 80%!

Why? You have 6 cims running at <14fps in high gear.

[Thad House]

What kind of drive method are you using to drive it? If you are using tank drive or standard arcade drive, it would make it seem like it is really fast and hard to control. I would recommend something similar to Chezy Drive. We've been using Chezy Drive for the past 3 years, and it makes faster robots much easier to control, as long as you put set the gains right. 13.5 fps is fast, but not stupidly fast, which I would consider being 17+. Still anything over 10 fps is hard to control with tank.