modwise adjustable otter switch

[rigga]

Anyone use one of the above? I seem to be replacing the otter switch on a yearly basis these day's, quality is utter crap and they don't last long, latest one I fitted a couple of weeks back and first run out today comes in far too early compared to its stated temp range, so effectively the fans are on constant, thought I'd go down a different route now, I've mailed modwise for some info but wonder if there is some feedback off those who have done this already.

[sgrimshaw]

I have their two speed fan kit, removes the need for the otter switch altogether.

Great bit of kit.

[rigga]

I'm presuming the adjustable kit does away with the standard otter switch also, as it employs a temp sensor attached to the outlet hose from the rad, but need confirmation of that from David Beer or those who have the kit I'm interested in, not considered the two stage kit, just want something to replace the flakey otter switch, and being able to configure the operating temp to my preference would seem ideal.

[Barreti]

I have something like you describe Rigga and it's a half speed fan kit.
It was from Modwise but May have been an early kit.

It's a dial with a sensor which is tied to the outside of the bottom hose then wrapped in insulation.

It links into the otter switch wiring and at whatever temp you select on the dial kicks the fans in at half speed.
The otter is still used to kick them in at full speed.

[rigga]

Ian, that seems similar but would still leave some reliance on the otter switch? which I'm not keen on at present, plus would mean having to change my current one as it cuts in at 70 degrees which is useless.
Would like to do away with the otter completely lf I can.
To add I have twin kenlows and the otter switch is in the rad not the swirl pot.

[sgrimshaw]

You might find this useful:

http://www.chimaerapages.com/resources_fan.php

It shows the installation and describes how it works etc

[cjb44]

On my Griff. I have fitted a manual switch by the steering column, wire goes in via bonnet release cable and I piggy backed the terminals on the Otter switch. I agree with most people that Otter switches are not to be trusted they always fail when you need them most. A good driver will be keeping an eye on his temp. gauge and operate the over ride switch as necessary.

[blitzracing]

Worth a look as electronics is going to be more reliable than bimetal switches and pressure sensors.

http://www.demon-tweeks.co.uk/Product.do?method=vi...

Edited by blitzracing on Wednesday 2nd July 12:21

[brett84]

I was looking at dual stage kits the other day and this seems good http://www.ebay.co.uk/itm/Adjustable-Dual-Electron...

[blitzracing]

Must be subject of the week-

Ive just purchased two of these kits, so can I sequence the fans at different temps. Ive not go around to soldering it together yet, and the relay on the board is not man enough to drive the fans directly, so I still need to use the origional fan relays. Im not sure how accurate this kit will be, as its does not use multiturn variable resistors but at this price, I dont mind experimenting. Other factors to consider are a decent dicast box and keeping the electronics cool in an engine bay. Its all very do able.

http://www.brocott.co.uk/electronic-diy-kits/senso...