[modeleng] Re: Steel Wheels

Hi Phil

Have you thought about putting a lip on the outside of the tyre, as in full 
size practice?

Interesting, what you say about tyres coming loose if the fit is too heavy. 
I know this can also happen in full size as the wheels get progressively 
turned down - presumably the hoop stress increases with the reduction in 
cross section, till the material reaches its yield point.

Regards
Ron

----- Original Message ----- 
From: "Phill Smith" <steam@xxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Friday, November 18, 2005 1:59 PM
Subject: [modeleng] Re: Steel Wheels


> The best way to do this accurately (and so they can't come of through
> continual cornering) is to put a small step on the inside of the rim, with 
> a
> matching inner bore in the tyre. ........ There is no need for this step 
> to
> be a press fit, but I make it so anyway. It is also under the flange so it
> can't be seen.....

> Don't be tempted to increase the interference
> fit, as the stresses may be increased enough that the rolling stresses
> (compressive stress) may permanently stretch the tyre so that it comes
> loose...... 
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