Reg/Rec ??

[paddlesat16]

Hi Guys

Does anybody know if these things are supposed to get hot? mine was red hot after going out for a ride today. Is it going to fail/failing at the moment?

Regards

Pegaso 650 1998
____________________
I once saw a bloke shagging a donkey.... in Saudi arabia. Theory Test Passed 26/10/09 Mod 1 Passed 26/4/10, Mod 2 Passed 7/6/10 Current Bikes Suzuki GSX1400 K5, Aprillia Pegaso 650, Suzuki DR350T.

[yen_powell]

[MickC]

It's the reason behind the fins, heat dissipation. If insulation on wres is starting to melt, you have a problem. Otherwise it's doing what it is meant to do.
____________________
XX XXXx
Previous: CG125,XS250 (converted to 400),Z250A, GPZ550, Norton Commando, XS500, 78 Laverda Jota, GPZ1100,Harris bonneville, XV750 (mono shock),TR1

[stinkwheel]

As above. That's why they have cooling vanes.

If you are concerned, making sure it's in somewhere it gets some air flowing over it and bolting it to a big metal bit of the bike for heat sinking are both good ideas.

It would be a mistake to assume the manufacturer put it in the best place, you just need to look at a VFR750 to dispel that one (attached to a flimsy bracket, under a plastic fairing and with no cooling fins, then they act all surprised when they fail).

I've even known people fit computer CPU fans to them BUT yes, they get pretty damned hot as standard and this is normal. They get less hot the more power you are using for the bike which is the main reason I have my headlights on most of the time on the VFR.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[paddlesat16]

didn't know they were supposed to get red hot, it hasn't got any air flow round it at all as the manufacturer put it under the seat.
____________________
I once saw a bloke shagging a donkey.... in Saudi arabia. Theory Test Passed 26/10/09 Mod 1 Passed 26/4/10, Mod 2 Passed 7/6/10 Current Bikes Suzuki GSX1400 K5, Aprillia Pegaso 650, Suzuki DR350T.

[Fizzer Thou]

The rectifier/regulator on my bike is fitted under the seat just in front of the battery box.It does not come as standard with a heat sink so I made my own using a suitabley sized piece of ally plate.This increases the surface area of the component,so aiding heat dissipation.

In the past I have seen suitable ducting going to similar parts.
____________________
Just talk bikes.What else is there?

Always have a 'Plan B'

[Kickstart]

[stinkwheel]

I always thought sticking a blob of that putty stuff they use on CPU heatsinks under them if they are bolted to a metal part would be a good idea.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[whitedevil]

thermal paste
____________________
GPZ500 sold ~ CBR600FS-2 sold ~ ZX6R sold ~ Street Triple R

[paddlesat16]

Many thanks for your replys guys, I think i'm gonna run some tubing of some description to aid cooling and maybe change the reg/rec at some date to a more modern mosfet type which don't generate the heat so much. See thread
https://www.apriliaforum.com/forums/showthread.php?t=207174

Regards
____________________
I once saw a bloke shagging a donkey.... in Saudi arabia. Theory Test Passed 26/10/09 Mod 1 Passed 26/4/10, Mod 2 Passed 7/6/10 Current Bikes Suzuki GSX1400 K5, Aprillia Pegaso 650, Suzuki DR350T.