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Re: Smiths Heater Problem
Posted: Mon Dec 21, 2015 7:00 pm
by Minor-Bramsche
SteveClem wrote:Yes, you can always open the windows if it gets a bit warm.
TOP
Now I'm waiting for the parcel with the heater.
Then I will have a look and clean up all the things before I fit it into Miss Marple.
I will do some pic´s from the "new" heater
Re: Smiths Heater Problem
Posted: Mon Dec 28, 2015 9:01 pm
by Minor-Bramsche
SteveClem wrote:Yes, you can always open the windows if it gets a bit warm.
Heater arrived today- looks good.
The next days I will break down the heater completely, thoroughly clean and reassemble. And then i will put it into "Miss Marple"
And I found a solution for the fan speed- simple
Lucas made it for Landy Jag and so on: "Vintage Lucas Rheostat Switch. Universal applications. Ideal for Heater Blower or Panel Light Controls."
Found a lot at eBay - not too expensive: about £ 30
Cheers for now[frame]
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Re: Smiths Heater Problem
Posted: Tue Dec 29, 2015 12:13 pm
by bmcecosse
That's the switch fitted to my TR7 - to dim the panel lights, and it struggles to do that... I'm not at all sure it's capable of handling the full motor current of a heater fan.
Re: Smiths Heater Problem
Posted: Tue Dec 29, 2015 4:38 pm
by Minor-Bramsche
I´ll wait and see ... first step is cleaning and then I think about fan speed and so on
Cheers
Re: Smiths Heater Problem
Posted: Tue Dec 29, 2015 8:33 pm
by don58van
I bought one of these motor speed controllers. I haven't had a chance to try it yet. I think it has a lot more promise in this application than that feeble looking rheostat. Far cheaper too!
http://www.eachbuyer.com/6v-12v-6a-dc-m ... 01380.html
Don
Re: Smiths Heater Problem
Posted: Tue Dec 29, 2015 9:53 pm
by bmcecosse
Yes - that will be a much better bet - provided it can cope with the 14 volt electrics in the car.
Re: Smiths Heater Problem
Posted: Wed Dec 30, 2015 6:41 am
by Declan_Burns
This one should cope with the 14V. The motor current should also be no problem. Negative earth only!
http://www.ebay.co.uk/itm/12V-40V-10A-E ... SwHnFV0hgo
Regards
Declan
Re: Smiths Heater Problem
Posted: Wed Dec 30, 2015 7:42 am
by don58van
Hi Declan
I agree that the one you show above ^ would be a safer bet with its higher voltage and current ratings.
I bought the one I listed above to run a 12v DC motor powered by a 12v power supply. I will be using it to test and calibrate speedometers.
Don
Re: Smiths Heater Problem
Posted: Wed Dec 30, 2015 9:25 am
by Minor-Bramsche
Thanks to all for your help!! Thats fine
I'll try the switch, which Declan has proposed - negative earth is in the car ... so it should work.
Cheers
Dirk
Re: Smiths Heater Problem
Posted: Wed Dec 30, 2015 11:25 pm
by craig.pattison
just a note of caution on the pwm style of speed switches, I tried one on an espace once and the unit whined all the time it was on. maybe a better idea would be to fit a resister pack and just have 2 speeds?
craig.
p.s if the units still in the garage i'll send it if you wanted to try it out.
Re: Smiths Heater Problem
Posted: Thu Dec 31, 2015 10:03 am
by bmcecosse
I see absolutely no need to vary the speed - if it's cold you will want it ON. I think you are greatly over estimating the amount of 'heat' this thing can actually produce ! Think of it more as a 'warmer' than a heater.
Re: Smiths Heater Problem
Posted: Thu Dec 31, 2015 8:12 pm
by don58van
Just a note of caution on the pwm style of speed switches, I tried one on an espace once and the unit whined all the time it was on.
Yes, PWM controllers will cause the motor to whine. The noise results from the power pulses being delivered to the motor. The whining is usually loudest at lower speeds and diminishes at higher speeds. I thought the engine and road noise would be enough to drown out the whining -- but apparently not.
Don