Regulator chat thread.

[5hort5]

OK, it's been a interesting day, I went to get my tyres fitted from F&P and to start with my battery was a bit flat so I charged it for 30 mins, stuck it on the bike and it fired, I went for fuel a mile away and it started again no probs, I went the 35 odd miles to F&P had my tyres fitted and it started fine. On the way back it was snowing so I had my lights on, I got to within half a mile of my house, pulled up at a set of traffic lights and didn't keep a bit of throttle on and it stalled (see carb related problem thread), anyway, the battery was dead, starter would just turn but wouldn't fire, not enough power, so I ended up pushing my bike home in 1/2 inch of snow - not fun and not best pleased.

Anyway! below is a chronilical log of events and volts from this evening:

5:20pm - Bike wont start - Battery out of bike and on the table - 12.18 Volts
5:35pm - Battery charging using a 12v 300ma charger - 12.64 volts
6.06pm - Still charging - 12.82 volts
6.32pm - Finished charging (well enough to start the bike) - 12.87 volts

6.36pm - Battery on the bike and started up

• at 2k rpm 13.26 to 13.35 volts
• at 5k rpm 13.20 volts
• lights on 12.60 volts at 1.5k rpm
• 1 minute later this has dropped to 12.34 volts
• just the side lights on and not the main lights 12.95 volts
• after 30 seconds it has climbed to 13.10 volts with just sides
• after another 30 seconds climbed to 13.19 volts at 1.5k rpm and 13.14 volts at 5k rpm

Next I switched the lights off and left it idling and it got upto 13.40 volts then it dropped back to 13.15 volts and stayed there for about 20 seconds then jumped to 13.38 volts then climbed to 13.41 volts and then dropped back to 13.15 volts (no rpm changes)

Turned the ignition off and it was 12.97 volts and after a smoke it had dropped to 12.88 volts.

I'll leave it attached and see how much it drops. (or should I do something else)

so it seems that turning my lights on kills the battery, the bulbs are Phillips X-tremes H4's 12v 60/55 watt. I tend to like riding with my lights on which isn't going to work but what am I up against here, knackered battery, Reg Rec issue, bad earth, cables rubbing or all of the above.

What should I do next?

Many Thanks

[Taipan]

I would think its your reg/rectifier. When running you should see 13.8 - 14.4v no matter what load you put on. My old Blade would run all ady with the lights off and keep the battery charged as per normal. Put the lights on and it would just drain the battery down. Needed a new reg/rectifier and all was well again.

join the club lol, im after a cbr rectifier as we speak, except my problem is high voltage, 17 volts!

Yep id say reg rec failing.

I know its not the end of the world if you dont, im sure a new one would be fine but for probably less money you can upgrade your system to a mosfet reg rec, either an FH08 from recent cbr's etc or an FH10 from zx10/14 fjr1300 etc. Bit of wiring and bobs your uncle.

Just did my curvy with an FH010 as I couldn't ride with my main beams on. Now I get 14.7 at idle and 14.5 with lights. No fluctuation even throughout the rev range

Not too sure what the story is if its a pointy though.
Here's a fault finding guide to help..
http://www.electrosport.com/technica...ding-guide.php

[5hort5]

ah well, day time riding only then, thanks for the input chaps and I'll be fighting with you beabert on ebay lol

So it's the reg rec, has anybody compiled a list of what will fit straight on, what'll fit with a few mods and what'll fit but you need to have a phd in bikes (like YC)? I feel a post trawl coming on if no ones has.

You want a mosfet one, thingy above just named the 3 that most use. The fh008 one from the cbr is small like the svs and will fit in the same space, the fh0012 wont you will have to move it, the fh010 im not sure.

fh008 is cheapest 2006 cbrs onwards.

They are all indentical to connect its just the plugs that are different.

you just keep your mitts of the ones i bid on lol

http://eviltwinsbk.com/forumz/index.php?topic=276.0

[5hort5]

What's fh00XX beabert, is that the model or year of the honda or something completely different?

It the coding thats stamped on the bottom of the reg rec. Has nothing to do with year or make of bike.

If you do get an FH010 or a FH012, as beabert said they wont fit where the original is. My FH010 now lives in the pillion seat storage happy out. Have had the bike out for hours and then checked it and it was barely warm if at all, so its fine there imo

yep as above, so make sure the model number starts with an f, that way you know its a better quality mosfet. 2007 onwards on a cbr have the fh008and some 2006's

yamaha r1 / fj for the fh 12
zx10 zx14 for fh 10