Is this A viable drive train

Hey so me and my teammates are planning on going with a descoring bot for worlds and wanting to gather some opinions on our drive train it is 6 motor 600rpm on 3.25 and we just wanted to see if other people thought it would be a good drive base we wanted to be really quick on the field and still have a decent amount of torque

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At my 2nd tournament I had one just like this. It works fine, I wasn’t trained enough with it. Just train and it works fine. It’s good for descoring.

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Forgive me if my calculations are wrong, but your drivetrain seems to go 102 in/sec. That’s really fast. For speed it’d be almost twice as fast as other robots, but torque may be a concern (unless you plan to make a PTO to your drivetrain for your other 22w)

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Hi thanks for answering and we aren’t really planing on ptoing the other 22w worth of motors as we don’t have enough pistons do so and we do plan on having our driver get a lot of practice in

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The short answer is no

The longer answer is heck no.

102 in/sec is extremely fast, no team has ever (really) been competitive with over 86 in/sec

This is your problem, you’ll be very fast, but you’ll have minimal torque. A couple of things that you could do are a) move your motors to the 36-tooth gear, giving you 61ish in/sec (assuming that those are 36 and 60-tooth gears or b) change those wheels to 2.75-inch wheels, giving you 86ish in/sec, fast but still having a semi-decent amount of torque. If you do go with the second option, you should probably change those 60-tooth gears to smaller gears (48?) to prevent the gears from scraping the ground, although you probably won’t need to because your robot should be pretty light as a descoring bot.

Tl;dr: It’s probably too fast with too little torque

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gotta go fast. If you can control it, it’s viable

Torque aside… your driver will need to (re)learn new methods of driving. The bot will carry considerable inertia at these speeds. Handling will be different also.

Other than that… I say go for it. Put all your strengths into one attribute.

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If you do a 8 motor 600 3.25 ou will be fine. Its what 4082B did at their last tourament. They couldnt get to top speed tho with only 6 motors in skills. tip: just go 600 2.75

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Consider actually reading the post, and you will see that OP said

6 motors would not get you enough torque to really be competitive, 8 would probably be fine, but still unadvisable in my opinion.

Also,

interesting…

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Just move the motors to the 36T gears and it will be good.

if your gonna use this i highley suggest doing 8m drive and a Pneumatic intake like doubleplay

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Hi i just read all the post and i was just wondering why this might not be a good drivetrain as we are mainly focusing on speed and descoring with this bot, is it because its to fast?

While this has already been said, I would really like to stress how little torque you will have. 6 motors on 2.75 for 600 RPM is probably the highest competitive speed that has ever been done, and even those robots struggle with torque. Pushing that yet again would mean so little torque I doubt you could actually accelerate to top speed. Furthermore, the torque deficiency caused by this setup would make it almost impossible to descore, as it takes a fair bit of torque to descore on a new field.

yes. 600RPM is a little much I think. Tune it down a little and you should be good. Also, what will you use the other 22Ws for?

Hi we plan on using the 22w worth of power for endgame,intake,and maybe a slapper

Hi so do you think maybe 450 rpm might be better then as this has been a common speed most teams have been recommending and seems it might the best balance between speed and torque

Oof, 76 in/sec is quite fast. Torque is a lot better than 600rpm, but still might be an issue when you’re pushing other robots/descoring a packed net unless you use 77 or 88w of power. I would go 400 rpm on 3.25 omnis, which is a good speed of about 68 in/sec and has good torque for descoring.

I mean I think 450rpm would be a good speed, especially if you’re aiming for a fast descoring bot.

I think it’s fine, as long as it’s with a 6 motor drive.

The only thing is, you’ll have to buy thinner spacers in order to fit in between the 3.25" wheels. If you have 2.75" wheels, I think that you should probably go for that.

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21417A won excellence running a 3.25 600 RPM, and having been running it the whole season. If your driver can drive it and you can make it work well, not overheating excessive then I feel you can run it.

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That’s just objectively incorrect, they were running 2.75" wheels. Check your facts next time please :slight_smile:

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