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Is there any kind of resin compound out there can make soft tires? I am thinking about taking the so real tires and making a mold. But I do not know of any kind of compound to make "rubber". I would like them to be hollow and flexy, just like a 1:1 tire.

Any thoughts?

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4 hours ago, meoirosiosi said:

Is there any kind of resin compound out there can make soft tires? I am thinking about taking the so real tires and making a mold. But I do not know of any kind of compound to make "rubber". I would like them to be hollow and flexy, just like a 1:1 tire.

Any thoughts?

There is. I dont know the name of it, but guys like Joseph from Fireball Modelworks uses it. Maybe if you contact him he can tell you the correct name of the resin he uses. I have many sets of his tires and they are a soft resin.

http://www.fireballmodels.info/

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It may not be a resin but a tinted rtv silicon. I do know that I can 3d print hollow tires with a flex uv resin that is bendable.  

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You can cast RTV rubber from a RTV rubber mould if you apply a coat of mould release.  It's how I made white rubber tires for my Pyro Mercer build.

Mercerrearthreequarters.jpg

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I have tried Smooth-on Reoflex 30 but it's to soft ,I think Reoflex 40 would work much better .

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That's a nice build Richard!  Great tip on the white tires in RTV!  I use the RTV from Micro-Mark for molds.  It ;holds up well and I think it would make great tires.  Only problem with it is that it is blue when it sets.  Don't know if you can put any black pigment in it or not.

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On 3/25/2019 at 9:37 AM, my66s55 said:

It may not be a resin but a tinted rtv silicon. I do know that I can 3d print hollow tires with a flex uv resin that is bendable.  

Why don't you print some tires that give a break from the same old kit stuff?
Inglewood slicks? %0's -40's tires?
Atlas, Monkey Wards, Voit , that kind of stuff?

 

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If I don't need it, I don't make it. I need these Firestone wide white wall tires for my 30's projects. 1987749620_whitewall2.png.447984001eb2341bb421fc34684aa9d5.png484205859_widewhitewall.jpg.f62a4c3f70b61b8a0a3c01495f68bfbc.jpg551325317_widewhitewall1.thumb.jpg.a5bcec1aae68a0645a8efd14482eed7a.jpg

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Posted (edited)

I tried the ReoFlex 40 an would say that'd be on the softer side still. I remember some real soft tires in the Revell hot rod 55 chevy that RF40 feels like. You would also have to dye this stuff black an that could cuase problems with mixing an consistency.

I have since gone with Task 14 that is already black but is like the hard rubber tires.

If I where to go after a softer tire now I would still get the RF40 but add black dye to the container until the tires are a happy black. Trying to mix as you go each tire sucks. 

Edited by ScottH454

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I'd say you'd need a shore hardness up around 60, maybe even 70. You can color them with Tempera black paint powder. That's what I did when I was making slot car tires (I used Shore 30 and that was even too soft for slicks).

IIRC Smooth-On has a "starter" kit. You get a pound of the stuff, so you can make plenty of mistakes. 

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Ok I found the stuff I was looking for as reference to the hardness. Micro-Mark sold a material specifically for tires an they used 40a hardness. Even that stuff needed to be colored black so might be stuck with that.  TCR-40 Tire Casting Rubber

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