VEX Spin Up Robot Design - Flywheel - VEX V5

[@dominicisgreat]

How many motors did you use for the flywheel launcher? I only have 1 motor available, with a blue gearbox. I have something similar but it doesn't go up to full speed and it slows down when i turn it on.

[@Taran_K]

nice

[@dav.idclips]

What exactly did you use to make this and , did you also use those gears at the bottom or just the top mechanism

[@bruhman1845]

Where can I buy just one? My school doesn't have any and insists they can neither find somewhere to buy it (they say it'll take too long) nor can they afford it.

[@steamlabstech]

Hi, What is it you are looking to buy? VEX are now selling a dedicated flywheel weight as well as a ball bearing which allows you to create less friction in the mechanism. Flex wheels are also now legal, the latter two parts I mentioned my teams are starting to experiment with, you can work without these in a flywheel build but I think you may run into issues with friction for this years competition.

[@bruhman1845]

@@steamlabstech I thought it was called a flywheel, but it's actually (as you mentioned) a flex wheel. If I try to buy one from vex, do you think I could get it within two weeks?

[@steamlabstech]

That is a million dollar question many are asking. Firstly, there are different components you need to purchase 1 - flex wheel 2 - hub There are different variations of components you can use, we went with aluminium hubs as the cheaper hubs were out of stock, we have also purchased a ball bearing to help reduce friction on the flywheel, one of my teams hasn't released their latest build yet, we will post it on this channel when they are ready. I hope that helps, lots of excellent robot reveals already released this season which will hopefully help you

[@fastmanatee8794]

Did you use a blue motor or green. I saw 2 speed gear ratios but not motor color

[@steamlabstech]

This is using a blue motor

[@fastmanatee8794]

Ok, would it work to use 3 speed ratios?

[@steamlabstech]

The gearing we have used is 60T, 12T, 12T 60T, this is an 84:60 ratio, it may work with a 3 speed ratio but haven't tested it yet, this gear mechanism works very well, if you have enough gears I would try it. Let us know how you get on with a 3 speed ratio.

[@abhinavrad01]

do you have instructions on how to build it?

[@steamlabstech]

I don't have instruction, if you pause the video you should be able to see what parts I have used, the most important part is the gearing At the bottom connected to the motor is an 84T gear, this connects to the middle shaft which is using a 12T gear with another 84T gear on the same shaft, being driven from the middle 84T gear is another 12, so you have 180T driving a 12T gear

[@larenzo6322]

we are trying double flywheel approach but it’s not going as far as yours. do you have any advice?

[@steamlabstech]

Double flywheel works, but my teams have found single flywheel is more effective, I suggest maybe a ratio of around 120 - 12 teeth with a single motor, if you use the blue cartridge this will generate enough power. The advice I can offer is protoytype prototype prototype, there is no easy answer with this, some of my teams are on their 8th iteration of the flywheel, a different structure will be different for each robot design.