View Full Version : Knobby Tires
Jeff Sharpe
12-01-2003, 14:48
Does anyone have a good source for knobby pneumatic tires and wheel asseblies they'd be willing to share? Thanks! J#
Kevin Watson
12-01-2003, 15:03
We won a truck pull using the 4" hubs and grippy pneumatic tires provided by Skyway Tuff Wheels (http://www.skywaytuffwheels.com). Here's a picture:
http://kevin.jpl.nasa.gov/photos/IM000123.JPG
-Kevin
Jeff Sharpe
12-01-2003, 23:33
Thank you!
we also used skyway pneumatic wheels. They have INCREDIBLE traction on the mesh and HDPE, even with a simple drill tranny. On the mesh, I was pushing against the bot as hard as I could, and it didnt even know I was there. On the HDPE, again it pushed me off easily(I was not standing on the HDPE either) it has about 1000x the traction of the horrible stock wheels that came in the kit. I would definitely check them out. Here is a pic:
sanddrag
13-01-2003, 18:41
Can someone tell me really soon what the size of those tires are? Thanks.
the diameter of the wheel that we used, inclusing the hub is approximately 8"
Greg McCoy
13-01-2003, 20:17
Hmmmm, I wonder what those are wanted for :D
sanddrag
13-01-2003, 20:18
Originally posted by Cory
the diameter of the wheel that we used, inclusing the hub is approximately 8"
including or enclosing? I'm looking for the OD and the width of the tires. Thanks.
Originally posted by sanddrag
including or enclosing? I'm looking for the OD and the width of the tires. Thanks.
As I look in the skyway online catalog, I don't see the wheels that we sued anywhere. I can ask about what model # they were, and figure out the exact width/diameter tonight at our meeting. Skyway must have more wheels than the ones shown on the website. I would assume there is a printed catalog with these in it somewhere, although I havent ever had a need to use one.
Anyways, Ill see what I can find out tonight
P.S. I meant including:D thats what happens when ya dont use spellcheck
Cory
I found the specs for these wheels last night. They are 4" skyway pneumatic hubs.(Don't know the model #) along with 200x50 Cheng shin(chen shing?) pneumatic tires. If anyone needs more info, PM me.
Cory
Ed Sparks
14-01-2003, 19:54
Here are some part numbers:
9" x 2" Pneumatic Universal with 5/8" x 3/16" Keyway - WHL428
9" x 2" Pneumatic Universal with 3/4" x 3/16" Keyway - WHL424
9" x 2" Pneumatic Universal with 1/2" Precision Bearing- WHL414
Call Skyway @ (800)332-3357 to confirm the above info before ordering. There are also 9" x 3" versions available.
9" x 2" keyway wheels are $18.31 each
9" x 3" bearing wheels are $17.40 each
Kevin Watson
15-01-2003, 00:14
Originally posted by sanddrag
Can someone tell me really soon what the size of those tires are? Thanks.
Sanddrag,
I just looked at the tires and they're labeled "Promo Durotrap" the size is "3.00-4". They're 10" in diameter. They're a very sticky compound (less silica, more natural rubber). As I mentioned, we got them directly from Skyway with our 4" hubs.
-Kevin
D. Gregory
15-01-2003, 02:54
How do they handle the ramp and HDPE?
Moshingkow
15-01-2003, 07:33
Skyway has either discontinued the pneumatic wheel line, or they just took them off their website. Does anyone have a catalog in pdf form?
Don Wright
15-01-2003, 07:34
:rolleyes: As stated above:
They have INCREDIBLE traction on the mesh and HDPE, even with a simple drill tranny. On the mesh, I was pushing against the bot as hard as I could, and it didnt even know I was there. On the HDPE, again it pushed me off easily(I was not standing on the HDPE either) it has about 1000x the traction of the horrible stock wheels that came in the kit. I would definitely check them out.
I am having trouble finding the cheng shin tires that we used. Their website (http://www.chengshintires.com )is totally in chinese, which isnt helping any, and many of the links dont work. If anyone has a catalog, or has seen cheng shin tires anywhere, please let me know, as we need to buy some new ones this year. I am going to try and find where we bought these from, but so far ive been unsucessful.
Cory
Don Wright
15-01-2003, 15:43
Here are some pictures that Skyway sent me today of different tires they sell and are on the FIRST order form.
This is the 8" x 2" wheel with diamond grip:
http://www.freebmw.net/don/first/pictures/8x2.jpg
This is the 9" x 2" wheel with lug grip:
http://www.freebmw.net/don/first/pictures/9x2.jpg
This is the 12" wheel with knobby grip:
http://www.freebmw.net/don/first/pictures/12.jpg
-Don
Thats it!!! the first pic you posted is the tire that we used. Did skyway send you a catalog? It would be great to get this info.
Cory
Don Wright
15-01-2003, 21:34
I went to their web site, then called them. They then faxed me the FIRST order form. However, I didn't really know what I wanted, so I called them back.
Then, the sales guy (I wish I could remember his name because the service was great) took some digital pictures and emailed them to me.
I then thought that others would want to see the pictures so I thought I would post them.
Don
Richard Wallace
17-01-2003, 17:10
An application engineer at Skyway sent me a drawing of their wheel WHL428. This is a 9" x 2" pneumatic tire on a 4" wheel, with a 5/8" ID hub and 3/16" keyway.
For other dimensions open the attached drawing (PDF format since the native .dwg file is 129k).
angier314
18-01-2003, 09:35
does anyone know where i could find more about the wheels in the first picture? i am looking for 10" wheels something like them thanks
Kevin Watson
18-01-2003, 12:27
Originally posted by angier314
does anyone know where i could find more about the wheels in the first picture? i am looking for 10" wheels something like them thanks
If you mean the team 589 'bot, they're 3" wide, 10" diameter pneumatic tires mounted on 4" skyway hubs. We purchased them directly from skyway for last years competition. With enough torque, they're great at peeling-up vast quantities of competition carpet and pulling the odd chevy pickup :).
-Kevin
sanddrag
18-01-2003, 12:36
Originally posted by Kevin Watson
With enough torque, they're great at peeling-up vast quantities of competition carpet and pulling the odd chevy pickup :).
-Kevin
We would have pulled that thing forever but the "driver" had the brake somewhat pressed. When the brake was released our robot almost got run over. There was like an inch before it would have hit. It would have done more damage to the truck than to the bot though. Ahh what memories....:)
We still have a bunch of students' cars and trucks to pull, but here in La Crescenta there's not a whole lot of flat ground.
Li-Anne D.
19-01-2003, 23:30
Originally posted by Cory
we also used skyway pneumatic wheels. They have INCREDIBLE traction on the mesh and HDPE, even with a simple drill tranny. On the mesh, I was pushing against the bot as hard as I could, and it didnt even know I was there.
How durable are the skyway wheels after some wear and tear on the wire mesh? We were thinking of using last year's vertical conveyor belts, but they really get chewed up on the ramp.
-Li-Anne
we havent driven them on the ramp enough to wear them down, but since we were using last years, they were worn down anyways.
Cory
mickjagger
21-01-2003, 09:52
Does anyone have the approximate weight of these tire assemblies? The 4" hubs and pneumatic grippy tires? Thanks,
Ricky Q.
22-01-2003, 13:27
Anybody know of a plce to get good 6x2 tires, skyway has a prototype one, but its not what we're looking for....:confused:
D. Gregory
23-01-2003, 23:00
Try places that sell wheelchairs and rascals.
hi_im_sean
24-01-2003, 19:48
RASCAL!!!!!!!!!!!!!
vBulletin® v3.6.4, Copyright ©2000-2017, Jelsoft Enterprises Ltd.