I replaced my fan motor with a new one that was for some 18 wheeler. Required
fabricating some new braces to mount it but the results are pretty good. Let me
know if you want details, I can get them to you next week when I am back home.
Bob
-------------- Original message ----------------------
From: "Randall" <tr3driver@comcast.net>
> > I have been hearing all along that the heater is not a powerhouse but this
> > doesn't seem like it will do a whole lot of anything at all. I
> > would like it
> > to demist my windscreen I guess.
> > -Is that just the way it is?
>
> Might be worth having the motor apart, to see how the brushes and commutator
> look. Also your battery charger may not be putting out a solid 12v ... it
> _might_ work better on a real battery.
>
> Many years ago I re-wound the armature of my heater motor, using fewer
> strands of heavier gauge wire ... the result was an appreciable increase in
> air movement. But you can't do a whole lot, at some point the fan just
> spins uselessly without moving any more air (or maybe even less). I never
> did arrive at anything that would effectively clear the windscreen, except
> Rain-X and a rag.
>
> Several people have written of heater upgrade for the TR2-3 ... the Spitfire
> heater looks like a good conversion to me. There was also a series of
> articles published in TRSC's "Tech Talk" about using a heater unit from JCW
> ... but I don't know if it's still available.
>
> > -If so, why have a rheostat to slow it down? (Maybe this is a similar
> > question to "why is there a dimmer for the dashboard lights?")
>
> Not to mention why the adjustable steering wheel adjusts from "closer than
> non-adjustable" to "closer than that".
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