So I finally got my bike together and took it for a couple of small test rides and the girlfriend went out on a ride a couple of weeks ago and it died on her and turns out the regulator had a meltdown and blew the main fuse effectively killing the bike. So I ordered up a new regulator and it gets pretty warm just at idle. Is this expected? Is there a way to test the voltage getting to the regulator to make sure I don't fry another one? I thought I mounted it so it has good airflow but maybe not? There is a 5/8" air gap beneath it. Here is some mounting pictures. Thanks in advance for any help.

 

Hard 2 c in pics but is under rectifier just an air gap?? Should b mounted 2 as large as u can go 1/8 alum plate maybe even 1/4 to get rid of that heat better the air its getting under there is very limited, and yes after short time idling it will start gettin hot..5 min of ridin u shouldnt b able 2 touch it ( if workin right) these little bastards put out a lot of heat. Its all the energy that big stators making that the batt cant use!!

 

If this is one of the r/r's with a metal plate on the bottom side, it is meant to
be mounted tight to the frame, so that heat 'wicks' through using the frame
as a heat-sink.

If you are going to mount, as shown, it needs to have the heavy fin-body.
Honda changed the design to one with heat-fins later in the game.
Got mine at electrosport.com, check them out.

Also here's a good thread... https://cbrforum.com/forum/f2-tech-9...-solved-27739/

Ern

 

Ive had quite a few electrosports melt on me.... Ive recently added an 80mm computer fan for xtra cooling w/good success... Ive tried other brands w fins also eventually burned up.. I would suggest large 1/4 plate plus fan

 

I had the same problem when I put my 900 together. I put on an 07-08 R1 tail on my bike. I originally mounted my regulator on the inside as well and it got fried. The problem was that it wasn't grounded properly and wasn't allowing the regulator to get rid of the heat. To fix the problem, I mounted the new regulator underneath the subframe. This would allow it to be grounded properly because it had a lot more contact with the metal from the subframe. I sanded down the paint from the subframe where the regulator came into contact with the subframe. I also figured that it may not get as hot if there is more wind hitting it there instead of the inside of the subframe. I then replaced the connectors to the regulator because some of them were fried also. In the end, the regulator is working fine now. BTW, I like how you hooked up your subframe to your frame. I plan on hooking up my R1 cans to the exhaust in the next few weeks. How did you do it? Show some more pics of the exhaust setup. Check out my pics in my album.

 

Thanks so much guys....I'll throw in a 1/4 inch aluminum plate and maybe even weld some fins on it and see if that will help dissipate the heat and keep it alive. As for the exhaust I just built a simple connection between the stock exhaust and where I mounted the cans. Just 1 3/4" mandrel bends. Tubing runs between the shock and swingarm. Pretty tight fit then does a 45 degree bend and then splits into two with a merge collector I built. I cut down the stock pipes on the cans and fused them together since they are like titanium. Still need to paint the rest of the exhaust and the engine and figure out something better for a light and maybe small fairing but it is very comfortable and has a pretty low seat height.

 

DITTO! … please?