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Old 11-21-2008, 04:01 PM   #436
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Do they sell rubber tires for 1/12th? Or do you have to make your own? I'm interested in that idea.
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Old 11-21-2008, 04:06 PM   #437
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I run rubber tires on my F103RM, which is basically a 1/10 pan car, outdoors on asphalt and they work great. They are a very soft compound, but wear well because the car is so light.

I haven't seen any proper rubber tires available for 1/12 scale.
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Old 11-21-2008, 05:20 PM   #438
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Originally Posted by reenmachine View Post
I run rubber tires on my F103RM, which is basically a 1/10 pan car, outdoors on asphalt and they work great. They are a very soft compound, but wear well because the car is so light.

I haven't seen any proper rubber tires available for 1/12 scale.
Got any pics of that?

dk
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Old 11-21-2008, 06:14 PM   #439
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Got any pics of that?

dk
I'll snap a pic on the car later, but here's what they look like:

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Old 11-21-2008, 06:49 PM   #440
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I'll snap a pic on the car later, but here's what they look like:

Saweet !! Look like F1 tires.

DK
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Old 11-21-2008, 08:22 PM   #441
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Thats right , go look at them..... last years models!
All the new stuff is either Li-po or Li-Ion.
And they will continue to sell the old stuff. DeWalt has been selling the same 18v drill for about 10 years...
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Old 11-22-2008, 03:15 PM   #442
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I heard Tamiya is going to be making a battery pack based off of the A123 cells...Considering these cells aren't approved yet in any sanctioning body that I know of...that is one heck of a leap of faith on Tamiya's part and a big statement on where they think the technology is going.
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Here's another thing to try. A123 makes a 18650 sized battery rated at 1100mAh that is only about 3 volts. It's super safe, has great current capability, and great cycle life. You can build a 2S2P pack for a total of 2200mAh at 6V or maybe try to fit in a 2s3p pack for 3300mAh at 6V.
It would be the same voltage as 4 cell NIMH. No changes to the motor or rear pod. The graphite chassis may eventually need mods, but that's minor since cutting graphite is not exactly a mass production operation.
Looks like Tamiya is releasing the 18650 sized A123 battery. This can be game changing.

http://www.rct.jp/contents/tamgp/world2008/04.html
http://www.rct.jp/contents/tamgp/world2008/04.html
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Old 11-22-2008, 04:02 PM   #443
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I can't remember where I saw the rubber 12th wheels/tyres, I think it was on the BSR website? Once I get home, I'll have a look as the website is on my 'favorites'. Cheers, Chris.
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Old 11-22-2008, 04:48 PM   #444
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Duratrax used to make a rubber tire that would glue on standard 1/12th wheels...but they were very heavy and the compound too hard to get any grip at all.

The F103s ran OK with rubber tires. They were much better on the soft rubber capped tires and even better still on foams. Unless rubber tires get some serious research I don't think they will ever be a viable option for pan cars. I think they could possibly work but it would take a different formulation then what is currently used for TCs.
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Old 11-22-2008, 04:53 PM   #445
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Originally Posted by InspGadgt View Post
Duratrax used to make a rubber tire that would glue on standard 1/12th wheels...but they were very heavy and the compound too hard to get any grip at all.

The F103s ran OK with rubber tires. They were much better on the soft rubber capped tires and even better still on foams. Unless rubber tires get some serious research I don't think they will ever be a viable option for pan cars. I think they could possibly work but it would take a different formulation then what is currently used for TCs.
Of course it would take some R&D, but I'm sure it's totally viable. It's just a matter of finding the right compound, sidewall stiffness, tire profile, etc. Probably not nearly as difficult to figure out as how to find the best way to run lipo in 1/12, for example.
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Old 11-22-2008, 04:58 PM   #446
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I can't remember where I saw the rubber 12th wheels/tyres, I think it was on the BSR website? Once I get home, I'll have a look as the website is on my 'favorites'. Cheers, Chris.
Hey bud hows it hanging? When are you coming back?

John's BSR Racing do the 12th scale cap tyres for outdoor racing on concrete / tarmac

http://www.bsr-racing.com/cap/

Not sure how good theses would be for racing mod indoors on carpet, they might work for 13.t stock racing..

steve
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Old 11-22-2008, 05:29 PM   #447
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Hey bud hows it hanging? When are you coming back?

John's BSR Racing do the 12th scale cap tyres for outdoor racing on concrete / tarmac

http://www.bsr-racing.com/cap/

Not sure how good theses would be for racing mod indoors on carpet, they might work for 13.t stock racing..

steve
That page says, "New & Improved 1/12th Scale Caps to be released April, 2005"

I emailed to see if they're making them. I'll post the reply one way or the other.
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Old 11-22-2008, 06:49 PM   #448
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Caps are generally made for concrete oval use...they tend to get shredded on the asphault really quickly. Not sure how they work on carpet.
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Old 11-22-2008, 06:50 PM   #449
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Originally Posted by reenmachine View Post
Of course it would take some R&D, but I'm sure it's totally viable. It's just a matter of finding the right compound, sidewall stiffness, tire profile, etc. Probably not nearly as difficult to figure out as how to find the best way to run lipo in 1/12, for example.
With how light the cars are in comparison to TCs it will be a lot more difficult to get them to work well enough for people to adopt them over foam tires...especially if the class gets even lighter with LiPo or LiFe.
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Old 11-23-2008, 01:24 AM   #450
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I would think that if we end up going to lighter batteries then tire wear will become even less of an issue. To be honest, tire wear and wear and tear in general in 12th scale is negligible for me compared to 8th scale buggy and 10th scale offroad. In both of those classes you can go through a set of tires in one run if the track is abrasive. Not to mention that 6 cells or a 2S LiPo is much harder on motors than only 4 cells. When I was able to race a lot of 12th scale last year I raced 6 times and I'm not sure that I trued the comm once. I remember taking it out and wondering if I had the car geared aggressively enough Reducing the weight of the cars and slowing down the spec classes with further reduce the best bang for the buck racing class that we have. I'm all for that!
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