Re: AndyMark Stealth Wheels
 

I like 'em, too.

Adam, how would you compare the AndyMark Stealth 4" (AM-2647) vs. the recently introduced VexPro Colson 4" (217-4049)? To me, the Colson looks a little better for CoF and hub material/structure. The Stealth costs less, is about 8% lighter and has a sprocket mounting pattern. Overall, I like the Stealth as an intake component, but would prefer the Colson in a drivetrain. Do you agree?

Re: AndyMark Stealth Wheels
 

I have used 4" colsons for the past two years. They provide good traction, great wear at a reasonable cost. I am interested to try the new hex version by vex soon.

Re: AndyMark Stealth Wheels
 

1756 used them last year, robot was sitting first practice day with cracked hubs

Re: AndyMark Stealth Wheels
 

Yeah I think these wheels are not meant for a FRC drive, maybe an intake, but I believe they are more intended for FTC use.

Re: AndyMark Stealth Wheels
 

Hi CD

Thanks to everyone who posted their experiences with the Stealth Wheels last season!

I was the main designer on that wheel and I wanted to share a bit of our design intent. We set out to create a really competitive FTC wheel (see the 8mm version here) and at the same time create a wheel that could be used all over an FRC robot; for intakes, drive trains, shooters, internal conveyors, roller claws, etc). We have seen and heard from teams that a main drive train gearbox can round out the internal hex on the wheels, but this can be solved by adding a hex hub (here) to the wheel.

A few quick pros and cons to using the wheel in a drive train:
Cons
-Lack of a 3D tread prevents mechanical engagement with carpeting (lowers total traction)
-May need to add a hub to prevent round-outs

Pros
-A stiff sidewall edge helps to prevent the wheel from sliding sideways (like when getting pushed by a defender)
-Like stated earlier, the wheel is inexpensive
-The wheel is easy for us to make so its easy for us to keep them in stock
-The 6 hole pattern in the wheel's center body means it works with all the AM sprockets, hubs, and other components.

Let me know if you have any questions
Thanks
Danny

I forgot to add that one of our students used stealth wheels for a tennis ball shooter that he built. The shooter certainly Isn't optimized but they have held up well and their performance seems quite good for shooting objects that are flexible.