Board logo

Heads up for keeping your regulator rectifier cool
Boylers11 - 13/10/14 at 09:42 PM

Just got one of these from Maplins for £5. The heat sink is 2" thick and the fan is roughly 2.5" diameter..
A complete bargain I thought and decided to share........

mcerd1 - 14/10/14 at 07:28 AM

socket A CPU's are so old I'm amazed any shops still have them

I must have at least one of them sitting in old scrap machines and several others of similar size for free...

Boylers11 - 14/10/14 at 07:41 AM

Lucky you. Just thought I'd help fellow BEC builders. No need to be an a**hole about it

CosKev3 - 14/10/14 at 08:09 AM

How hot do they get?

Daddylonglegs - 14/10/14 at 08:45 AM

quote:
Originally posted by CosKev3
How hot do they get?


Very!

I had to have a similar thing on my old Honda VFR 750. A common fault is the regulator overheating and frying the battery. I cured it by using heat sink compound between the regulator and the frame, and fitting a 12V CPU cooling fan to the top of the regulator. It's surprising how hot CPUs etc can get.

[Edited on 14/10/14 by Daddylonglegs]

40inches - 14/10/14 at 09:15 AM

I did something similar,a 90mm fan from PC World, although it cost twice as much at £10.
Description
Description

CosKev3 - 14/10/14 at 11:25 AM

quote:
Originally posted by Daddylonglegs
quote:
Originally posted by CosKev3
How hot do they get?


Very!

I had to have a similar thing on my old Honda VFR 750. A common fault is the regulator overheating and frying the battery. I cured it by using heat sink compound between the regulator and the frame, and fitting a 12V CPU cooling fan to the top of the regulator. It's surprising how hot CPUs etc can get.

[Edited on 14/10/14 by Daddylonglegs]


Ok cheers,have to think about positioning mine in the next couple of days as I chop my loom down

bigfoot4616 - 14/10/14 at 12:37 PM

i know honda's are well known for failing, don't think its as much of a problem on r1's though.

still worth a bit of thought when it comes to positioning of it.

MikeRJ - 14/10/14 at 02:48 PM

quote:
Originally posted by bigfoot4616
i know honda's are well known for failing, don't think its as much of a problem on r1's though.

still worth a bit of thought when it comes to positioning of it.


A lot of the newer bikes (including later R1s) have MOSFET based regulators that run significantly cooler and are very reliable so no extra cooling is needed. The earlier Honda regulators had a terrible thermal design, quite surprising given Hondas reputation of engineering excellence.

matt_gsxr - 15/10/14 at 10:03 AM

quote:
Originally posted by MikeRJ
quote:
Originally posted by bigfoot4616
i know honda's are well known for failing, don't think its as much of a problem on r1's though.

still worth a bit of thought when it comes to positioning of it.


A lot of the newer bikes (including later R1s) have MOSFET based regulators that run significantly cooler and are very reliable so no extra cooling is needed. The earlier Honda regulators had a terrible thermal design, quite surprising given Hondas reputation of engineering excellence.


+1 the MOSFET ones don't get hot at all.