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Old Foam Tires

Old 06-16-2004, 10:06 AM
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e_lm_70
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Default Old Foam Tires

Hi,

Got a old Kyosho F1 1:8, it come with some very old Foam tires. It look like they have been already machine I guess it has been removed 2-3mm. (But there are still around 9mm of foam around the rim!)

My problem it is that I can't get any grip out of these tires.

Clearly the Kyosho F1 is out of production since years, and find new tires isn't that easy.

Does anybody knows how could be well prepare the foam tires in order to get some honest grip of of them ?

I don't need for competition, but I would like to be able to power a little my car without ending in a 360-760 uncontrollable twist !

Danke

e_lm_70

P.S: These tyres are very similar to the 1:8 Foam in use in the Mugen and Serpen car ... with small from and wide rear tires ... but this Kyosho has 1:8 scale tyre but with 1:10 classic tires locking system (12mm hex lock) ...
Old 06-16-2004, 11:36 AM
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budweiser505
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Default RE: Old Foam Tires

just in time lol i was just about to post on how to improve foam tires. get a piece of sandpaper and sand the tire REALLY lightly in all directions until it gets a little more grippy. try to keep it level all around though. afterwards brush off excess and cut a strip of tape. wrap the tape around the tire lightly and slowly peel it off to get rid of all dirt etc. do this for each tire, it works for me and improves the friction on my tires by at least 30%

hope this helps
Old 06-16-2004, 07:27 PM
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ZipZap
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Default RE: Old Foam Tires

It depends on how old the foams are. They come in plastic for a reason. They will eventually dry out and totally lose grip. I haven't heard any good way to get the life back into them.

One choice you have is to save the wheels and just get new donuts. Why wouldn't other 1/8 wheels fit? Do they have some special quick disconnect?
Old 06-17-2004, 02:16 AM
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e_lm_70
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Default RE: Old Foam Tires

ORIGINAL: ZipZap
Why wouldn't other 1/8 wheels fit? Do they have some special quick disconnect?
Not too familiar with 1/8 cars, but it look to me that 1/8 cars use wheels with 12mm hole and a 17mm connector.

The wheels in this 1/8 F1 have 4mm hole and 12mm connector (exactly like the 1/10 cars) ... but the size of these wheels are similar to a Mugen or Serpen 1/8 :
Front :
82x35mm (rim is 53x38) the connector start 18mm inside the wheels
Rear
82x54mm (rim is 53x60) the connecttor start 30mm inside the wheels

I will try to sand and try some foam liquid addictive for get some grip.

Otherwise:

Either I have to remove the old foam, and glue a new foam from a 1:8 over the rim.

Or buy some rubber tires for 1:8 (do you know this site http://www.gp-speedtires.de ?) and glue it over the old foam !

...

Since it I got this car just for fun, I don't realy like to spend time and money on renew it ... I'm mainly looking for some good trick for get some minimum grip from a old foam. (I guess they are over 5 years old these tires)

Danke

e_lm_70
Old 06-20-2004, 02:44 PM
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entity
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Default RE: Old Foam Tires

simply soak your foam tires in silicone spray for a couple of hours... the foam will suck in the silicone and actually swell the tires a bit..... pull em out of the bath squeeze out all of the silicone you can.. and then.. just cross hatch em with a fine razor.. NOT DEEP!... just scrape the patch on there.. the remaining silicone will keep the scracthes from tearing and keep the tires plyable.... good luck.
Old 06-22-2004, 03:34 AM
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e_lm_70
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Default RE: Old Foam Tires

What is a Silicone spray? Where I can find it ?

Can you give me some link of example of this spray?

I have some LRP foam and rubber tires gripping liquid ... that I use for my F201 ... but since it doesn't make miracles on my rubber tires ... I not sure it can do miracle on my old foam ...

e_lm_70

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