Cooling a Rectifier Regulator.

My Rectifier/ Regulator died the other week and has now been replaced. It
has been replaced with the same model that lasted two years. This is much
bigger than the original model where a replacement lasted a whole two months
before spilling its guts.

The only place I have to mount it is in the tailpiece as it is roughly 80mm
* 80mm. There is no suitable hanging place that I can see anywhere else on
the bike. Well, nowhere that it wouldn't get covered in shite. So my
thought was to put a fan on it. I have two.

I have a small Pentium 3 size fan and I have an 80mm * 80mm case fan. I
like the idea of the case fan but I don't know if this would be overkill.
I'm inclined to think the cooler the better though. What does the FOAK
think.

 

gazzafield says...

Extend the wiring and stick it under the bottom yoke, in the airflow.
Worked nicely on my GSX750EFE and almost as soon as my mate put it back
where it should have been it caught fire and melted a sidepanel.

 

That's the trouble with non-Italian bikes - the electrics are shit.

--
Krusty.

http://www.muddystuff.co.uk
http://www.muddystuff.us
Off-road classifieds

'02 MV Senna '03 Tiger (FOYRNB) '96 Tiger '79 Fantic 250

 

<Thud>

 

Bolt it to a lump of 1/4 inch alloy plate, works well on the 400 imports!


Rob

 

I have mine mounted on the tailpiece and it's not overheated.

The smaller fan will do, but they don't last long and if it's already
seen hundreds of hours use I wouldn't bother. The 80mm fan is yer man if
you really want to fit one.

 

And have it blowing the air into the heatsink (like a processor fan) or
pulling it away? What do you think?

 

Blowing in, in general. Too much ineffective air entry from the sides if
it's sucking.

 

Having 'taken the mind' of several people in the know, a good smear of
heat transfer paste between reg/rec and frame tube is a Good Thing
too. A big fan blowing is the dog's, though.