Hard wire the rectifier directly to the battery with 12 gauge wire and a 30amp inline fuse… to the positive terminal. It’s a good way because you avoid the loom. As you have issues before it may help. lol on YT there are many instructional videos on this. Saved me a ton of hassle doing this. Good luck! 😊
As a former owner of a 1999 st2 I can tell you, that you will be changing that rectifier/regulator every year.. I owned my st2 for 4 years and replaced it 3 times. Even changed it for a 916 model that was built on the right side next to the battery. For more cooling...good luck. Riding the bike is a blast though!
So pleased to see your optimism, the Italian biks have never had a reputation of having a flawless electric wiring. I do hope that you will enjoy the bike for what it is made for, sunny days and small winding roads 😊👍😊
Those Electrex World regulator rectifiers don't have a particularly good reputation - I went through a couple when I had issues a few years ago with my 98 VFR800. Ended up with a 2nd hand MOSFET R/R from a low mileage Street Triple R and hard wired the stator to the R/R.
Have a look for the solder joint kits, they use a heat gun to melt the solder in a heat shrink sleeve, seen them used on other channels and seem to work fine
As some have said, the stock rec/reg in that location is prone to overheat. On my 98 ST2 I put a mosfet reg/rec that has built in fins and cut a piece of that under cowl to insure fresh air flowing on it. You loose the warning light on the dash, but since I ftted a usb plug with voltage readout in the dash panel instead, this didn't matter.
I think the light staying on is because your battery is a touch low due to all the start stop stuff, it will probably settle once you ride the bike a sensible distance.
Stator voltage is fine but sometimes the insulation breaks down and doesn’t supply sufficient power. Meg it or at least check all circuits for earth leakage The electrex RR’s are crap and will fail again, get a decent Shindengen mosfet and wire it directly to the battery avoiding all the standard cables - you need an in line fuse as well tho.
I have had to change out my regulator rectifier 2 times over 5 years. Just seems to be a st2 97 to 98 thing single phase generator. I think the make you have us one of the best for the job. You do not need to relocate it. It has a massive heatsink area.
Beautiful bad ass FZR in the background. I'm a fan of the 89/90 (never owned one though) model but the yellow paintjob on that 87 makes it looks way better. I know they are classics but I never liked the red and white paint scheme.
@@AshRowland I will definitely 👍😁 About the Ducati video, this is exactly what I just did to my Busa, but I swapped connectors and fitted a Mosfet regulator. (FH020BA) It's on ZZR1400, GSXR 1000 etc etc
I love the first gen 87/88 FZR1000s, they look better than the later ones to me, I watched them dominate in racing down here in the southern hemisphere, by the time the EXUP came out the 750s and the OW01 had taken over racing duties. I’ve almost finished the restoration of my own 87, just the paintwork to do, red/white of course. 😀
@@AshRowland The Blue white “Sonauto” colours nearly got the nod for mine, but it came from the factory in the red/white so I thought I’d keep it original.
In the mid 90s I finally had enough saved to buy a Ducati, not a 916, which is what I wanted, but a 750SS, what began was the worst experience in bike ownership I have ever had😂, the dealer bought it back after 6 months under the “lemon law” I swear that bike was cursed, everything that could go wrong, went wrong. The final straw was the engine self destructing as the mechanic warmed it up for a test ride after yet another stay in the workshop.☹️
@@AshRowland Yeah they are pretty crazy here in NZ too, bike prices in general are insane here, especially anything 80s and 2 stroke, guys are asking 40,000- 50,000 NZ dollars for RZ500s RG500s and NS400s😳😆. The previous govt had the brilliant idea of making it so any bikes brought into the country, that were manufactured after 1989 had to have anti-lock brakes fitted, before it could be registered for the road🙄😡 They clearly never consulted anyone in the industry as anti-lock brakes were rare on bikes right up to the 2000s. There is a waiver you can apply for but it costs money and the bike has to meet certain criteria. This stupid law has pushed the price of old bikes up, and made importing bikes very expensive. I see the prices some bikes in the UK go for (mainly 80s 90s ones) and almost feint, they go for up to a quarter of what we pay for them.😀
@@uhtred7860 80s 2 stroke in the UK are rare and expensive. I'd love an 80s 2-stroke 250 but they are crazy money for what they are. That's mad, my 1999 Hayabusa doesn't even have ABS 🤣 in fact, the only bike I ever rode with ABS was a Suzuki Gladius that I learnt on 🤣
@@AshRowland Ha’h .. 🤣. Bypassed limp & went straight there .. that’s no good mate .. good luck , perseverance is essential with these ferking motorbikes.
Looks really good without all of that black paint peeling off it, nice job! For charging system checks other than isolated component resistance testing I probe the back of the connectors at the appropriate pin to see what the voltages are with everything plugged in and running. A word or 3 about keeping it stock- be careful with that philosophy. It works brilliantly for Japanese bikes, not so much for Italian bikes. I speak from experience. Can be a PITA, but I enjoy improving the stock shortcomings so it is a bit fun for me. I say embrace it and make it better than stock when necessary.
Thanks James... the pins in the plug I wanted to test were weatherproof sealed and I couldn't really get in there... I like stock, but I also like making improvements... I don't like breaking down 🤣
Good evening Ash and Kate i love watching your RUclips videos on your RUclips channel I hope both of you are well and Ash are you enjoying the build of your new motorbike please say hi to Kate I do miss her not being on your RUclips videos please keep safe and warm and please keep up your good work on your you tube channel cheers ash keep going you make me smile
I had an st2 with electrical problems. Everything was changed, lasted about a month. Then phut ! Rectifier/regulator blown. My brother had a Harley one spare. Put it on, and problem solved. Did over 40,000 miles on the bike no problem. The Harley one had huge capacity which solved the problem.
That's not stock location for Reg/Rec. Stock location on later models is inside that scoop where you had your hand while you were fitting the nut/bolt. Location on earlier bikes was down by the motor. Yours has been relocated to a position underneath the scoop. Possibly because it's too big to fit inside the scoop. Inside the scoop is best location, as it gets fresh cool air from in front of the bike. The position of yours looks to be protected from the fresh cool air by the little bit of chin fairing (which I think has probably been trimmed back so the reg/rec could be fitted) Stock reg/rec has cooling fins much like on the cylinders of an air cooled engine.
@@Farlig69 Underneath the scoop? I stand corrected - I thought it was by the engine. I have a 2001 ST4 and 2003 ST4S and they're both inside the scoop. I just assumed that whoever had fitted the replacement reg/rec had relocated it there.
Inside the scoop make more sense to be honest, the more cooling the better... I put my hand on it after running the bike for a while and it was basically room temperature. To be honest, it looks like I might have to replace it again anyway, seems to have a battery light on below 2k revs
Yes, please. Novice here. If I put two big rocks in a 45 gallon drum and rolled it down the Hardknott Pass with my eyes shut, could I pretend I had a classic Ducati? More seriously, I'd try to get as much wind as possible around any reg/rec, rather than rely on thermal conductivity on a metal to metal interface.
Your Royal Mail order is probably still in the office because they don't have anybody to deliver it. They actually prioritise Tracked items (even though they're not supposed to 😉).
I didn't show it but all I did was check the voltage at the battery while the bike was running and it was 14v so it seemed ok, it broke on the first ride out lol
@AshRowland You know what mother said 'if you can say something interesting or funny, just leave a comment designed to boost the algorithm for a favoured RUclips star'. She was weird. If you're reading this, I can only apologise.
Hard wire the rectifier directly to the battery with 12 gauge wire and a 30amp inline fuse… to the positive terminal. It’s a good way because you avoid the loom. As you have issues before it may help.
lol on YT there are many instructional videos on this.
Saved me a ton of hassle doing this. Good luck! 😊
Thanks, I'll be revisiting this at some point definitely 👍
As a former owner of a 1999 st2 I can tell you, that you will be changing that rectifier/regulator every year.. I owned my st2 for 4 years and replaced it 3 times. Even changed it for a 916 model that was built on the right side next to the battery. For more cooling...good luck. Riding the bike is a blast though!
Thanks mate, yea, if I'm being honest then I'd say that I don't think the one I've put on is perfect lol
It's literally the only RR I've ever seen without cooling fins. Seems like only the Japanese know how to make charging systems.
So pleased to see your optimism, the Italian biks have never had a reputation of having a flawless electric wiring.
I do hope that you will enjoy the bike for what it is made for, sunny days and small winding roads 😊👍😊
Oh boy you're right... went to see my mum earlier and she lives out in the sticks with the most amazing country roads
Those Electrex World regulator rectifiers don't have a particularly good reputation - I went through a couple when I had issues a few years ago with my 98 VFR800. Ended up with a 2nd hand MOSFET R/R from a low mileage Street Triple R and hard wired the stator to the R/R.
Ah, that might explain why it now has a working battery light, but stays on below 2k revs 🤣
Have a look for the solder joint kits, they use a heat gun to melt the solder in a heat shrink sleeve, seen them used on other channels and seem to work fine
Ah cool, will check it out, thanks mate
As some have said, the stock rec/reg in that location is prone to overheat. On my 98 ST2 I put a mosfet reg/rec that has built in fins and cut a piece of that under cowl to insure fresh air flowing on it. You loose the warning light on the dash, but since I ftted a usb plug with voltage readout in the dash panel instead, this didn't matter.
I've ordered a second regulator with fins to replace it with once it breaks 🤣 I definitely want to fit a small volt meter
Really enjoyed that video too, well done. Bike looks loads better with all that Matt black paint removed from silencers and footpeg hangers.
Thanks mate, I agree, the way the black paint is still at the bottom of the engraving looks quite good I think, makes the writing stand out
I think the light staying on is because your battery is a touch low due to all the start stop stuff, it will probably settle once you ride the bike a sensible distance.
Hopefully, seems to go off over 2k revs, hopefully its the second hand RR thats the problem and I don't need to change the stator
Stator voltage is fine but sometimes the insulation breaks down and doesn’t supply sufficient power. Meg it or at least check all circuits for earth leakage
The electrex RR’s are crap and will fail again, get a decent Shindengen mosfet and wire it directly to the battery avoiding all the standard cables - you need an in line fuse as well tho.
Yea, it would seem they're not too popular with some... I'll definitely be revisiting this again lol
You knew it wasn't going to be easy as that😂. Carry on ash.👍😁
Haha thanks Ray
I have had to change out my regulator rectifier 2 times over 5 years. Just seems to be a st2 97 to 98 thing single phase generator. I think the make you have us one of the best for the job. You do not need to relocate it. It has a massive heatsink area.
Thanks mate, It seems to get mixed reviews to be honest... I've got another I've ordered for when it dies 🤣
Electrex really know their stuff - think and hope you should be OK now.
I hope so, they seem to get mixed reviews though
A lot of owners fit a tiny volt meter for added security. The battery light coming on at low rpm is normal. My sons did that all the time.
Seems like a great idea to be honest, that way I could see what it's producing below 2k when the battery light comes on
Beautiful bad ass FZR in the background. I'm a fan of the 89/90 (never owned one though) model but the yellow paintjob on that 87 makes it looks way better. I know they are classics but I never liked the red and white paint scheme.
Thanks mate, i think that's going to be my favourite once it's done, check it out on my channel mate
@@AshRowland I will definitely 👍😁
About the Ducati video, this is exactly what I just did to my Busa, but I swapped connectors and fitted a Mosfet regulator. (FH020BA)
It's on ZZR1400, GSXR 1000 etc etc
I love the first gen 87/88 FZR1000s, they look better than the later ones to me, I watched them dominate in racing down here in the southern hemisphere, by the time the EXUP came out the 750s and the OW01 had taken over racing duties. I’ve almost finished the restoration of my own 87, just the paintwork to do, red/white of course. 😀
@@uhtred7860 my favourite paint scheme is the blue and white from '87, I'll probably keep this yellow though
@@AshRowland The Blue white “Sonauto” colours nearly got the nod for mine, but it came from the factory in the red/white so I thought I’d keep it original.
The bike looks really nice now
Thanks mate, I agree 😊
Yes. This make of rectifier will show battery light on at low tickover.
Oh really? Thats normal? ok cool
In the mid 90s I finally had enough saved to buy a Ducati, not a 916, which is what I wanted, but a 750SS, what began was the worst experience in bike ownership I have ever had😂, the dealer bought it back after 6 months under the “lemon law” I swear that bike was cursed, everything that could go wrong, went wrong. The final straw was the engine self destructing as the mechanic warmed it up for a test ride after yet another stay in the workshop.☹️
Oh dear... looking to by an ST2 by any chance? 🤣 I'd love a 996 or 748 but the prices are mental, I can't even find any abandoned ones!
@@AshRowland Yeah they are pretty crazy here in NZ too, bike prices in general are insane here, especially anything 80s and 2 stroke, guys are asking 40,000- 50,000 NZ dollars for RZ500s RG500s and NS400s😳😆. The previous govt had the brilliant idea of making it so any bikes brought into the country, that were manufactured after 1989 had to have anti-lock brakes fitted, before it could be registered for the road🙄😡 They clearly never consulted anyone in the industry as anti-lock brakes were rare on bikes right up to the 2000s. There is a waiver you can apply for but it costs money and the bike has to meet certain criteria. This stupid law has pushed the price of old bikes up, and made importing bikes very expensive. I see the prices some bikes in the UK go for (mainly 80s 90s ones) and almost feint, they go for up to a quarter of what we pay for them.😀
@@uhtred7860 80s 2 stroke in the UK are rare and expensive. I'd love an 80s 2-stroke 250 but they are crazy money for what they are. That's mad, my 1999 Hayabusa doesn't even have ABS 🤣 in fact, the only bike I ever rode with ABS was a Suzuki Gladius that I learnt on 🤣
Limp mode & Ducatis are best mates.
Not sure about limp mode, this went straight into push mode 🤣
@@AshRowland Ha’h .. 🤣. Bypassed limp & went straight there .. that’s no good mate ..
good luck , perseverance is essential with these ferking motorbikes.
@@queenslander954 Thanks mate
Only Ducati could spec a rectifier with no cooling fins…… I’m guessing the phrase “belt and braces” hasn’t yet permeated Bologna.
Good job finding the issue , them exhaust silencers look mile's better now you have got the black off them 👍
Thanks mate, I'm really happy with them
Looks really good without all of that black paint peeling off it, nice job! For charging system checks other than isolated component resistance testing I probe the back of the connectors at the appropriate pin to see what the voltages are with everything plugged in and running.
A word or 3 about keeping it stock- be careful with that philosophy. It works brilliantly for Japanese bikes, not so much for Italian bikes. I speak from experience. Can be a PITA, but I enjoy improving the stock shortcomings so it is a bit fun for me. I say embrace it and make it better than stock when necessary.
Thanks James... the pins in the plug I wanted to test were weatherproof sealed and I couldn't really get in there... I like stock, but I also like making improvements... I don't like breaking down 🤣
Good evening Ash and Kate i love watching your RUclips videos on your RUclips channel
I hope both of you are well and Ash are you enjoying the build of your new motorbike
please say hi to Kate I do miss her not being on your RUclips videos please keep safe and warm and please keep up your good work on your you tube channel cheers ash keep going you make me smile
Thank you 😃 I've now got an action camera so I'll be recording first rides very soon!
Similar problem to me on my vtr 1000 on my channel baddz garage all sorted now replaced mine with a reg/rec from an R1
Yea, looks like you had a bad battery too 👍
I had an st2 with electrical problems. Everything was changed, lasted about a month. Then phut ! Rectifier/regulator blown. My brother had a Harley one spare. Put it on, and problem solved. Did over 40,000 miles on the bike no problem. The Harley one had huge capacity which solved the problem.
oooh, I definitely look into that, I'm not sure how long this one will last 🤣
Royal FAIL are 💩. Good to see the bike running again Ash. 👍.
🤣 thanks mate... first ride video soon!
That's not stock location for Reg/Rec.
Stock location on later models is inside that scoop where you had your hand while you were fitting the nut/bolt.
Location on earlier bikes was down by the motor.
Yours has been relocated to a position underneath the scoop.
Possibly because it's too big to fit inside the scoop.
Inside the scoop is best location, as it gets fresh cool air from in front of the bike.
The position of yours looks to be protected from the fresh cool air by the little bit of chin fairing (which I think has probably been trimmed back so the reg/rec could be fitted)
Stock reg/rec has cooling fins much like on the cylinders of an air cooled engine.
Nope that is the standard location for the early bikes too - I have one of the first a Cagiva era 1997
@@Farlig69
Underneath the scoop?
I stand corrected - I thought it was by the engine.
I have a 2001 ST4 and 2003 ST4S and they're both inside the scoop.
I just assumed that whoever had fitted the replacement reg/rec had relocated it there.
Inside the scoop make more sense to be honest, the more cooling the better... I put my hand on it after running the bike for a while and it was basically room temperature. To be honest, it looks like I might have to replace it again anyway, seems to have a battery light on below 2k revs
No surprise with the bodged wiring you don’t fix properly.
Lol, I'll be readdressing that at some point, it did what I could with what I had available at the time
FIRST! Check the big orange fuse near the battery. This is the charging fuse!
Thanks mate, fuse is fine 👍
You can get a clutch quietening plate that goes in the bottom of the stack.
Yes, please. Novice here. If I put two big rocks in a 45 gallon drum and rolled it down the Hardknott Pass with my eyes shut, could I pretend I had a classic Ducati?
More seriously, I'd try to get as much wind as possible around any reg/rec, rather than rely on thermal conductivity on a metal to metal interface.
You either like the clutch rattle or you don't, I really miss hearing it on my current bike, but I like the agricultural feel of those old L twins
🤣 I never realised the clutch rattle was a marmite situation 🤣 @roadbull @chrislee7817
Fix it and get rid of it before it breaks again 😂some things never change I guess, wop bikes still have shite electrics 😂😂😂
🤣 You looking to buy a Ducati ST2? I know a guy
Super job as usual 👍
Thank you mate
I have put a volt meter on the dash so can always check
I intend on doing this too!
well done Ash , by the way what that song playing at the end your videos ? cheers :-)
I think RUclips automatically puts it in the video description, its Guess I'll Never Know by Tracktribe, available in the RUclips Audio Library
Your Royal Mail order is probably still in the office because they don't have anybody to deliver it. They actually prioritise Tracked items (even though they're not supposed to 😉).
I think it's well and truly lost, still says its in Midlands sorting office. I ordered a new one direct from DJI in the end 🤣
Has it got belts and have you changed them Ash.
Yes it has and no I haven't... yet 😉
@@AshRowland oh shit 💩
@@dereklucas8420 🤣 don't panic, they were done about 8k miles ago, I'll do them at some point soon
@@AshRowland I’m only messing with you pal. You’re doing a fine job. Love watching your vids.
@@dereklucas8420 Haha, I got that, thanks mate 👍 😃
Why would they have a reg rectifier without fins for cooling as well
Hopefully it was downhill when you had to push it home!😁
flat ground fortunately, not uphill 🤣
But you didn’t test the charging system b4 riding it.
I didn't show it but all I did was check the voltage at the battery while the bike was running and it was 14v so it seemed ok, it broke on the first ride out lol
It's a Ducati....Next time you ride it, something else will crap out.. which will be a constant in your life until you throw it in the canal. ;)
🤣 🤣 🤣
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@AshRowland You know what mother said 'if you can say something interesting or funny, just leave a comment designed to boost the algorithm for a favoured RUclips star'. She was weird. If you're reading this, I can only apologise.