14 replies to this topic

[Realminiman]

so after my mot woes now I have a small problem im trying to solve with speed one on the heater which is the faulty coil thingy .. does anybody have a exact part number of the resistor to buy from maplins or an exact value of it , or a solution.. I did do this a few years back on one of my other mpis but I cant recall what I did !! lol ..

 

Thank s.. MW

[FlyingScot]

Not sure about Maplins but AFAIK it is only about 1.2 ohms but needs to be 120W due to the draw of the heater.
The original is just a coil of resistance wire the air flow helping with cooling.

FS

[Realminiman]

ok thanks.. maplins don't go up to 120.. max they do is 10 w..  whatever I repaired the last one with was from maplins 

[cal844]

Heere!!

 

http://mgroverpartfi...t=2&Price=empty

[Realminiman]

ok thanks! try on tues..

[Realminiman]

out of stock ..

[Realminiman]

anybody any solutions ..?

[FlyingScot]

The original resistor is an open coil type so you could try this http://www.ebay.co.u...=item1e89f7de12
Going to try it myself as this is becoming an issue.
You could also wind your own from resistance wire.

FS

[cambiker71]

I used one of these and soldered the resistor into a seperate circuit on a twin speed switch to convert a single speed to twin...

 

resistor

 

http://www.ebay.co.u...=item2c80493fe9

 

switch(s) for the single speed owners who want to convert

 

http://www.ebay.co.u...=item51acd0b90a

[FlyingScot]

I used one of these and soldered the resistor into a seperate circuit on a twin speed switch to convert a single speed to twin...
 
resistor
 
http://www.ebay.co.u...=item2c80493fe9
 
switch(s) for the single speed owners who want to convert
 
http://www.ebay.co.u...=item51acd0b90a

Switch looks okay but I cannot agree with the resistors as they are 10W spec so even with 6 it is still 60W max against 120W needed.

FS

Edited by FlyingScot, 07 May 2014 - 09:58 PM.

[cambiker71]

They've been fitted for two years now with no problems, and longer than that on my previous daily driver, maybe mpi heaters take a higher load than earlier ones?
No idea what the rover/honda heaters (that these resistors are for) need but modern heater motors are usually much more powerful than mini ones!

[Realminiman]

The original resistor is an open coil type so you could try this http://www.ebay.co.u...=item1e89f7de12
Going to try it myself as this is becoming an issue.
You could also wind your own from resistance wire.

FS

yes I have seen these.. the longer thinner one looks like it could be a straight replacement.. for £7 its worth the gamble and a try ..

[Realminiman]

I used one of these and soldered the resistor into a seperate circuit on a twin speed switch to convert a single speed to twin...

 

resistor

 

http://www.ebay.co.u...=item2c80493fe9

 

switch(s) for the single speed owners who want to convert

 

http://www.ebay.co.u...tem51acd0b90ahi thanks yes ive seen these also.. how do you keep them cool as they are obviously to big to fit into the motor housing?

[cambiker71]

I used one of these and soldered the resistor into a seperate circuit on a twin speed switch to convert a single speed to twin...
 
resistor
 
http://www.ebay.co.u...=item2c80493fe9
 
switch(s) for the single speed owners who want to convert
 
http://www.ebay.co.u...tem51acd0b90ahi thanks yes ive seen these also.. how do you keep them cool as they are obviously to big to fit into the motor housing?

I made a bracket from a scrap bit of aluminium, it hangs from the bottom of the heater at the back on The left hand side beside the round ribbed vent.
It's been fine and I leave mine on the slow resisted speed pretty much all the time.

[Realminiman]

ok and you used that part with no alterations.. be great if you put up a picture.. ; ]]