Has anyone fitted one of these fan speed thingy me jigs?

http://www.ebay.co.uk/itm/Land-Rove...emister-fan-speed-increase-kit-/161949128396?

Just after some feedback. cheers

Looks good to me- seems like it connects another resistor in parallel with the first, so reducing the total resistance and increasing the voltage supplied to the heater fan.

But its says it just increases fan speed of the low setting but does nothing to the high setting so why not just use the high setting?

Yes fitted one a few weeks back takes about 15 mins to fit increases low speed but leaves high speed the same more heat on low speed without the roar of the fan on high speed.

Ahh ok fair enough! It sounded like it was just making low high and leaving high alone! So its more low is medium, high is high. In that case maybe I shall purchase...

Easy to fit?

I am going to sell a resistor on eBay for 17.99!

High will stay the same as high is a direct feed to the motor - can't magically increase the motor speed, well, maybe 24V would make it spin a bit faster!

In all seriousness, what is the benefit, just run the fan on high!

discomania said:

I am going to sell a resistor on eBay for 17.99!

High will stay the same as high is a direct feed to the motor - can't magically increase the motor speed, well, maybe 24V would make it spin a bit faster!

In all seriousness, what is the benefit, just run the fan on high!

Click to expand...

Because its a defender thing, sellers sell useless tat to people who thing they need it, rtc dampers spring to mind theres many more!

17,99 plus 3.00 p+p

If you're worried about the noise of your fan on full speed I'd say you've bought the wrong vehicle.

So the fan uses a resistor to cut the speed (no resistor on full speed). Reduce the value of the resistor and slow speed will run faster, which is more effective than slow, but not as noisy as full speed.

The isea seems sound, but just find out what the existing resistor value is and replace with a lesser one.

OR, and I would prefer this, find a rotary variable resistor , replace the switch, and you would have fully variable speed!

The standard resistor is 10 ohms (not sure of power rating), Better option would be to add another resistor in parallel with the existing one (probably another 10 ohm. with a suitable switch that would give you normal slow, new 'mid' speed and normal high. Because of the power of the fan motor you are not going to get a variable resistor to do the job unless it is huge or is used to control a linear regulator to adjust the fan motor voltage (and that will also need a heatsink) or a Switched mode PSU. On most ventilation systems the resistor pack is normally in the fan airflow so that it is cooled, unless you have a Vauxhall Zafira where it is used to start a car fire - see BBC Watchdog

I think i'll leave it, i'm mechanically minded, but elecrical im ****e