Good material for el toro?
 

Hi all,

What's a good frictiony material for the el-toro-esque style intake?

I'm looking for something on McMaster-Carr if that's possible.

Thanks!

Re: Good material for el toro?
 

I dont know what you are trying to make, but this?
http://www.vexrobotics.com/vex/produ...ure/mat-g.html
or from McMaster-Carr
http://www.mcmaster.com/#rubber-mesh/=qkitvb

Re: Good material for el toro?
 

Blue Nitrile works really well for the balls this year, we are using it, and it grips extremely well.

http://www.mcmaster.com/#standard-co...-belts/=qkiuud

Its the blue abrasion resistant Nitrile.

Re: Good material for el toro?
 

The Kit of Parts included an 18" length of 3M's GM400 Grip tape. It seems to do a good job of not slipping on the game ball's cover.

Re: Good material for el toro?
 

According to the El Torro BOM they used McMaster part #86085K21 which we got some for another design and works very well gripping the ball, although rather expensive.

Re: Good material for el toro?
 

Wedge top tread also seems like a good option as it is pretty grippy on the ball. Also, if only need mcmastercarr parts:
A) large surgical tubing could work well either wrapped or just over the post
B) the mesh in kevans post
C) some of this neoprene- http://www.mcmaster.com/#9013K48 -it's nice and cheap

Good luck!!

Re: Good material for el toro?
 

There also is polyurethane/silicone/neoprene tubing on McMaster which you guys could certainly give a try. It would be much easier to attach to aluminum tubing or whatever you might use. That way, you don't necessarily need to worry about adhesives or breaking through the material to attach. Plus it comes in many ODs and IDs if I recall correctly. Here's a link to the page as well. McMaster Link

I can try to find out what we specifically used last year for our intake if that would help as well!

Re: Good material for el toro?
 

Wedgetop worked well for us. We tried surgical tubing over the post, and it might have been more effective if we had bigger diamater posts. I'm sure you guys will rock the design!

Re: Good material for el toro?
 

Tennis racquet grip has worked pretty well for us. We chose it because it is cheap and easy to procure. Our intake is an over the top roller though but it should still work with an el toro type intake.

Re: Good material for el toro?
 

In 2013 my team used Rescue tape on our intake roller to grab the frisbee, and it worked extremely well. It's a grippy silicone tape that sticks to itself and grips everything else- when wrapped tightly, it basically fuses into a single grippy roller. On Amazon http://www.amazon.com/Rescue-Tape-Se.../dp/B000ZTK6CI

This looks similar, but may not be exactly the same. http://www.mcmaster.com/#surface-pro...n-tape/=qkt60k

Re: Good material for el toro?
 

hmmmm....made me look.....apparently McM doesn't sell wedgetop any more?

Sorbothane grips the balls well.

The lower duro versions grip better, but get dirty and lose grip faster.

Re: Good material for el toro?
 

Sorry poor wording, McMaster doesn't sell wedgetop- I just meant it could be the best cheapest option and then all three others could be bought from McMaster.

Re: Good material for el toro?
 

We also are currently in the search of a material to grip the ball, we started with some surgical tubing that was wrapped around the poles very tightly with not much success, we then went and wrapped the poles in some kind of fabric I believe its called Polyester/Vinyl Foam Mesh: http://www.mcmaster.com/#antislip-carpet-pads/=qkubq7
this worked well for the application we are using it in but we are continuing the search for another material such as some type of grip tape type material.

Re: Good material for el toro?
 

My team literally (and I actually mean literally) has over 200 feet with tons of different rolls and colors because we used/tried to use it for our conveyor belting in 2009- it is super grippy on the ball but may be too thin for el toro? Not sure

Re: Good material for el toro?
 

Yeah we love the stuff put it under electronic components so they don't slip so many usages for it. We had one layer wrapped around over lapping just the ends due to the way we wrapped it and it was enough, if once doesn't work for this particle mechanism going two three times should surly do the trick.

Re: Good material for el toro?
 

The material around tennis rackets is really nice and cheap too!

Re: Good material for el toro?
 

Our team covered PVC pipe with hockey tape, and then wrapped surgical tubing (thicker than the KOP surgical tubing) around it like a spiral, and it picks the ball up very well.

Re: Good material for el toro?
 

Can you please post a picture? We have been having trouble picking up our ball and we are using just hockey tape.

Re: Good material for el toro?
 

We have found it necessary to wrap the surgical tubing in that direction.

Re: Good material for el toro?
 

Agreed that hockey tape alone does not have a particularly good grip on the game piece this year. We attempted that with one of our prototype rollers, and did not like the results. We did have good results with surgical tubing (.375 OD, like the KoP). Our best results were with low durometer rubber wheels.

El Toro Material
 

Hi. I was wondering what material was used to grip the ball for El Toro on Boom Done's robot this year.

Re: El Toro Material
 

Remember to search first!

http://www.chiefdelphi.com/forums/sh...hlight=el+toro

Re: Good material for el toro?
 

How far apart are your motors? How high up are they? What angle do you have them out at when you pick up balls? What do you have providing force between the two bars?

Sorry, I have a lot of questions, but our team is struggling with ours

Re: Good material for el toro?
 

What are you guys using for the shafts that extend outwards for El-Toro?

Re: Good material for el toro?
 

Don't rule out the old faithful pool noodle.

Re: Good material for el toro?
 

Use banebot wheels use banebot wheel use banebot wheel works really well we just fastened them on our el toro sticks works amazing

Re: Good material for el toro?
 

So, do Banebot wheels work well?

Re: Good material for el toro?
 

Dear who716,

How did you mount your banebot wheels to the el toro sticks? Banebot wheels are typically center keyed or hex keyed in the middle.

Regards,

Re: Good material for el toro?
 

Yes the bane bot wheels where hex keyed and we discovered that 1/2in aluminum rod fits perfectly with just a little tap of a hammer they fit. They were very snug we couldn't move them unless we take a hammer to it. initially before we found that the 1/2 fit we were going to bore the wheel out to a certain size then press the stick through it but this was much simpler.
this aluminum rod we then attached to a pg71 gear motor using a machined adapter. I can possible post a picture soon

Re: Good material for el toro?
 

The top of the Versaplanetary Gearbox (I assume this is what you are looking for) is 10 in off the ground.

Just for additional information, the top of the appendage when deployed is ~22 in off the floor.

46 degree angle, measured today.

We have surgical tubing tied between two eyelet bolts attached to the motors.



Sorry I wasn't able to reply as quickly, we do not have meetings on Tuesdays. I can get measurements on how far apart the motors are Friday or earlier.

Re: Good material for el toro?
 

Thank you very much! As I said earlier, I only ask because we are having trouble with ours. I suspect our problem is due to a lack of tension between the two poles. Can your el torro pick up balls without any robot movement?

Re: Good material for el toro?
 

Try bicycle grips used for mountain bikes. Another good product is water proof electrical tape.

Re: Good material for el toro?
 

We tried several things and found that the black foam insulation for copper piping makes an excellent covering. Its round sticky and rugged not to mention it can be purchased at any walmart or home improvement store.

Re: Good material for el toro?
 

We can pick up the ball as we are driving up to it. Just sitting there without any movement on the base does not pick it up.

Re: Good material for el toro?
 

Is anyone able to pick up the ball without moving the base?