Page 16 of 28
Re: Scrambler C
Posted: February 17th, 2015, 11:31 am
by someusername
So I did check out Servocity's rubber lip ring selection, but I would only be able to get the 1/8 inch wide ones. how hard or soft if the rubber on those and would the 1/8 inch wide still give me good traction?
Re: Scrambler C
Posted: February 17th, 2015, 11:33 am
by iwonder
I started out with the Servo City wheels (I think they've got the same rubber rings), they worked for a while, but when a run gets below maybe (not exactly sure) 3-4 seconds they start to skid as well. They're entirely useable though.
Re: Scrambler C
Posted: February 18th, 2015, 10:26 am
by someusername
iwonder wrote:I started out with the Servo City wheels (I think they've got the same rubber rings), they worked for a while, but when a run gets below maybe (not exactly sure) 3-4 seconds they start to skid as well. They're entirely useable though.
My runs are between 2.5 and 3, so I might have to stick with accounting for the skid when when callibrating for the correct distance.
Re: Scrambler C
Posted: February 18th, 2015, 11:39 am
by InfiniCuber
someusername wrote:iwonder wrote:I started out with the Servo City wheels (I think they've got the same rubber rings), they worked for a while, but when a run gets below maybe (not exactly sure) 3-4 seconds they start to skid as well. They're entirely useable though.
My runs are between 2.5 and 3, so I might have to stick with accounting for the skid when when callibrating for the correct distance.
You can also search for other robotics wheels with rubber tires, you may get better results, or perhaps even mixing your own rubber if you're up for it, that way you can control the size and durometer of them!
ServoCity also has different types of wheels that might be worth checking out!
Re: Scrambler C
Posted: February 18th, 2015, 12:49 pm
by someusername
I wouldn't even know where to begin on how to make my own rubber, and it's too late for me to change my axle shape and size for new wheels. I did install some o-rings on the axle to slow down the moving nut, and that reduces a lot of the skidding.
Re: Scrambler C
Posted: February 18th, 2015, 8:41 pm
by InfiniCuber
someusername wrote:I wouldn't even know where to begin on how to make my own rubber, and it's too late for me to change my axle shape and size for new wheels. I did install some o-rings on the axle to slow down the moving nut, and that reduces a lot of the skidding.
If you're feeling adventurous, you can look it up, it's simple really, looking up "liquid rubber" or "rubber mix" or even "[durometer number] rubber mix" would give you results.
I'm glad the o-ring helped! At this point of you really want to see how much skid you can reduce, you can always try using balloons around your wheels, they do work great! (Although you have to change them as they rip every once in a while if you're not careful)
![Wink ;)](./images/smilies/icon_e_wink.gif)
Re: Scrambler C
Posted: February 18th, 2015, 9:15 pm
by someusername
InfiniCuber wrote:
If you're feeling adventurous, you can look it up, it's simple really, looking up "liquid rubber" or "rubber mix" or even "[durometer number] rubber mix" would give you results.
I'm glad the o-ring helped! At this point of you really want to see how much skid you can reduce, you can always try using balloons around your wheels, they do work great! (Although you have to change them as they rip every once in a while if you're not careful)
![Wink ;)](./images/smilies/icon_e_wink.gif)
How would you attach the balloon to the wheels without creating any uneven areas?
Re: Scrambler C
Posted: February 18th, 2015, 9:40 pm
by bernard
someusername wrote:InfiniCuber wrote:
If you're feeling adventurous, you can look it up, it's simple really, looking up "liquid rubber" or "rubber mix" or even "[durometer number] rubber mix" would give you results.
I'm glad the o-ring helped! At this point of you really want to see how much skid you can reduce, you can always try using balloons around your wheels, they do work great! (Although you have to change them as they rip every once in a while if you're not careful)
![Wink ;)](./images/smilies/icon_e_wink.gif)
How would you attack the balloon to the wheels without creating any uneven areas?
If you stretch the balloon evenly around the wheels, it could be quite even. I think you would be able to tell which parts are stretched more by the opacity of the balloon. I would expect it to be harder to get a uniform tire from liquid rubber since it would take time to dry which would cause the lower sections to be slightly thicker from the liquid rubber dripping as it dries.
Re: Scrambler C
Posted: February 19th, 2015, 7:38 am
by someusername
But how would you get it to stay? Do you just glue it?
Re: Scrambler C
Posted: February 19th, 2015, 8:14 am
by InfiniCuber
bernard wrote:someusername wrote:InfiniCuber wrote:
If you're feeling adventurous, you can look it up, it's simple really, looking up "liquid rubber" or "rubber mix" or even "[durometer number] rubber mix" would give you results.
I'm glad the o-ring helped! At this point of you really want to see how much skid you can reduce, you can always try using balloons around your wheels, they do work great! (Although you have to change them as they rip every once in a while if you're not careful)
![Wink ;)](./images/smilies/icon_e_wink.gif)
How would you attack the balloon to the wheels without creating any uneven areas?
If you stretch the balloon evenly around the wheels, it could be quite even. I think you would be able to tell which parts are stretched more by the opacity of the balloon. I would expect it to be harder to get a uniform tire from liquid rubber since it would take time to dry which would cause the lower sections to be slightly thicker from the liquid rubber dripping as it dries.
Unless you have the liquid rubber sitting in a mold, which would make it even:D