The Magic Escaped! Expert opinion of the Ducati 749 project and fault finding the reg rec and stator
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- เผยแพร่เมื่อ 1 ต.ค. 2024
- It's MOT time for the 749 project, and the experts from B+B motorcycles give their opinion of Dave's work. But there is a little fault that Ducati tech Gary found, and it's causing Dave some extra work!
Find out how to test lots of electrical items inc the stator and reg rec on a modern classic Ducati, and what improvements can be made.
obsessionengin...
After having similar problems on several bikes over the years, this was a great fault finding process. It would be easy, with the magic of editing to make yourself look like an expert but, you are honest and struggle with electric as most of us do. Thank you.
For anyone reading this in the future - watch for engine oil wicking up the stator wires and causing connection issues at the white connector if that makes sense. I’ve seen it on my 999 and a 996. You will see oil drips on your garage floor and strange running voltage fluctuations on your dash while riding.
I'm currently rebuilding a 999, I laughed out loud when you discovered the interesting packaging of the battery box. Although I almost lost my mind when I was doing my mine! I'm surprised more of these don't end up loaded in a trebuchet and placed gently at the bottom of a very deep lake! Thanks for the entertainment, nothing better than sharing the misery!
"Packaging" is quite possibly the politest way I've heard it put Stephen 😂👍
Yup, same old problem with Honda’s VFR800 until fitted with mosfet rr!
I have a CBR F3 that I have had for 15 years. The bike has been bulletproof except for the crap charging system, which has left me stranded multiple times. After tons of research, I think I have fixed my electrical demons by converting to a modern genuine Shindengen series regulator/rectifier, and installing an LED voltage monitor. You can google the benefits of doing this conversion to older motorcycles.
I had a very similar issue with my old SRAD (and very common on most Suzukis I believe) did all the same checked as you did and getting all the correct results from the stator I could not stop it destroying reg/rec, even a mosfet unit, and after talking to a nice man at Electrex World we concluded the earth from the battery to the engine was probably at fault. Bought a new earth lead from Suzuki all was good again. The old earth lead looked ok but I thought I’ll open up the crimped connections, they were greener than a leprechauns tunic but from the outside looked good. Lesson learned
Good pacing, great content and a layman's approach is appreciated. Im getting a 749 shortly as an appreciating keeper. cheers
I've loved watching this and just makes me pine for one even more - it also made me realise...Ducatis are less hassle then triumphs 😂
My first "proper" bike was a Ducati 748SP (not new) Just 5 miles from the dealership I noticed the throttle response had gone,. I coasted to a petrol station just in time to see blue smoke coming out of the fairing.... The RegRec had given up the ghost, and the entire wiring loom melted into a birds nest of plastic and copper wiring.... I never quite trusted the bike after that and sensed it was so unimpressed with my riding skills, it had decided to kill me, one way or other.
It was merely showing how much it liked it in the dealership with all it's Italian friends
You were only testing the rectification side of the reg/rec there Dave. I would have tested voltage output on the four pin plug just to confirm it wasn't a wiring fault on the bike. She's a beautiful little motorbike now mate, awesome job as always 👏
Good tip! Next time I'll know!!
I was having charging issues on my 996 that had done it's desmo service but the reg/rec was not checked for some reason, i then did the same and changed over to a Mosfet and problem solved.
Keep up the great vids.👍
What you were measuring on the rectifier were Ohms, not volts or amps, but the results were as they should be - as far as ohms go, half an ohm shows that resistance is futile 🙂
Nice job on using a MOSFET unit - well worth the extra ton, I'd say. They seem to clamp the magic in place more securely.
Ah, a master in the art of wiggly amps I see. The power is strong with you!
Your videos always makes me smile Dave. Top job once again.
Valuable lesson I've learnt about the Ducati from the last few videos on it is definitely not be buying one anytime soon,, always liked a 1098 ,,but the quirky built construction methods,, I'd just keep the k6 gsxr and my bandit 1200 ,, easy maintenance ☘️☘️☘️☘️☘️☘️👍👍😁 from northern Ireland 😁
Ah, but the suzuki's don't have the noise and theatre of a Ducati 😁
A job well done! This must surely mean you are now a fully qualified magician. With a little help from that bloke you mentioned, Arthur Gnome.
Top explanation of how to test a charging system not scary at all 😂 it wouldn't be a true piece of Italian engineering without a bit of a temperamental electrical system and I like the frame colour 👍
ducati regulator is the same as a honda regulator
Funny, I took my 748 out this morning and, no suprise, I had no indicators, tacho, lights, horn, for the first few miles. Then it fixed itself. LOL. At least the 916/748 IS easy to take apart. The 749/99 is a dog.
Totally agree. WTF was Terblanche thinking... and I'm not talking about the aesthetics, this time.
Great video explaining electrickery Dave. Having owned several Honda's with dodgy reg/recs I've always been looked upon this stuff as witchcraft and magic. Think I've got a better understanding of how to test them after watching this.👍
Bought the second edition 916 new with the better electrics 'bosch' ha! Italian bikes. On the centre stand to wash rear wheel etc no key it would start up it's self but sometimes it wouldn't do it. Also had a oil leak at 32 miles leaving the shop had to ring them to come and pick me up. Sump plug wasn't tight and was on it's last threads luck didn't come out on the round about a couple of seconds earlier. 🤔 Other than that it was great.
Cheers Dave. Kept me entertained while getting rid of last night's curry. Keep it as is , you got a unique rare Ducati . Stunning bike keep up the good work 👍
Great in depth video, and glad you found the solution.
Even honda suffers with dodgy reg/recs.
Modern sports bike packaging is obnoxious to work on though.
For some reason the 749/999 seem complete bonkers to work on compared to it's immediate predecessor, which is a joy to work on (748, 916 etc). My 20 year newer Fireblade is a b&57&rd though when it comes to stripping it's clothes off. Things really have got worse in some respects. I can't understand why.
Great work as per usual, lovely bit of kit
Great trouble shooting. Mosfet Shindengen in particular, is the only way to go
Excellent finished result Dave! Another challenge to learn about motorcycle electrics! Hopefully it will sell to your satisfaction because you’ve put a lot of effort & cursing towards it. I still think it would’ve been worthwhile to paint the frame red. But that’s just me & you’ve got a race bike to build amongst so many things to do! Well done🇮🇹✅
Would never have thought the electrics on a Ducati would play up!
It's not just Ducati eclectronics Woolworth electronics is bit of thing on Italian bikes in general.
I absolutely love how you take us along with your process of working through all these things. Thank you so much for sharing your detailed explanation of things. Cheers from Albuquerque, New Mexico, USA!
Glad you liked it, I do try to show enough detail without it getting boring
@@obsession_engineering You strike an extremely effective balance - including your occasional mistakes or unexpected things that pop up. Well done, sir!
Having reached a ‘certain age’, life’s for living etc and decided that a) I need to get my bike license and b) when the time is right, I’d like to buy a Ducati (even narrowing down to the 749 specifically) I stumbled across your channel and have loved watching these vids as you ‘recommission’ this 749.
I couldn’t believe it when I then saw in this vid that you took your bike to B&B in Lincoln and then found your Lincoln based too (we’re out near Saxilby.
Really hoping that you get to enjoying riding your 749 and I hope to this year be in the position having saved pennies/sold kidneys etc to hopefully buy a 749 too….even if I have to just stare at it whilst I go through the learning journey..
Keep doing the great vids, love the humour 👍
Good to hear we've another local Ducati fan.
Drop me a message if you need any info on a 749
@@obsession_engineering thanks Dave, I may just take you up on that offer when the times right.👍
You should try nailing a voltage draw on an audi allroad...... THAT's a challenge.
Sounds horrific! There's a reason I don't work on cars
Is a Ducati like a Ferrari great to look at great to ride/drive expensive to buy and run, best left on display in the living room me thinks!
The Italians would call it character! As with most bikes, they're best either used regularly, or not at all. They are higher maintenance than Jap and German bikes, but as with high maintenance women, they can be worth the effort ;)
Great job Dave! Another good restoration. Where do you get your bolts restored/replated?
DDG Plating in Nottingham. Sensible prices and pretty quick turn around
and you would have vasaleaned all those crap plugs to keep them from corroding in the future?
Vaseline is OK in a pinch but a proper job requires dielectric grease.
Sounds like an old tractor 😂
I had exactly the same issue with my GSXR. Went through the same tests. Discovered my multimeter was very inaccurate. Bought a better one, went through the tests again. In the end I changed the most likely component - the regulator. Bingo - that was the problem.
Another great video dave. Great stuff as just bought an 06 999 flia rep and know nothing about the 999/749. Always wanted one and bought it .. with pages of service history.. I hadn't and still haven't ridden it.. but I did do my research and all the questions I had were answered in the add. I didn't realise ducati had so many variations with frames. I bought mine as an s from a guy who bought from a dealer without ohlins.. as anyone ever heard of that. Its an 06 . Red frame. Anyway thanks for the video. If I ever have that problem you have saved me heaps of time. 👍
Probably has "Chinese" fairing kit...which means it might have been dumped, had a tip-over as Ducati fairngs are insanely expensive. "FILA" should have Ohlins, not Showa fork Shock or Sachs shock... do a VIN check.... Ducati did two special liveries "FILA" and "Parts Unlimited" "FILAS" came on the 999R sand cast case 999CC carbon everything.. So probably had fairing kit installed, which doesn't mean it's a bad buy at all. Make sure your starting electrical system is always behaving perfectly, well charged as in Dave video ..otherwise the starter clutch / sprag will wear out.. ABout $800 parts / labor
@@carlmayer691 I know its not a fila .. but came with 999s fairings red frame 06 no ohlins ..?
Yeap, had this on my monster half way to the woods! Want a MOSFET if using a lithium battery too! So a good upgrade!
At least it wasn't as bad as my ETV1000, not only a failed rectifier but it nearly set on fire (that was the connector to be fair lol).... 😀
Easier to find the fault if there's smoke signals :)
@@obsession_engineering Fortunately it had only melted lol, shows you should always read the owner's forums - plenty of pics of ones who weren't so lucky!
Brilliant , thanks .👍👌
✨ Promo sm
Dave myself i would hard wire the stator to the reg rec the plug rots over time then then the output side of the reg rec wire that directly to the battery with a 30 amp fused link myself a honda man done that on my vfrs they charge permantly at 14.5 v with lights on.
Happy days lol
Thanks Dave I have that exact issue I have been chasing on my Multistrada you have unlocked a way forward for me
What was the internet page you got the info from if you dont mind me asking ?
Loving your videos by the way
I found these useful
th-cam.com/video/5v2LtHlvcqI/w-d-xo.html
th-cam.com/video/-2jWIkhy1fo/w-d-xo.html
and as commented below, you can test the voltage coming out of the +/- on the 4 pin plug of the reg/rec to prove it's not a wiring fault. The 3 phase connectors are prone to melting!
@@obsession_engineering Thanks Dave 👍
Sell you say.... How much?
Deal already done, sorry
Anyone who has had to put the wiring back in the battery box will have a smile looking at yours waiting to be packed back in! On another note you probably know but some of your viewers might not, don't try and start a Ducati or most big twins with a weak battery, as it doesn't take long to wear the starter clutch/sprag bearing.
The big cc engines are especially prone to killing sprags. I shouldn't really have even tried with the low battery
Still the best looking Ducati,
Oh lets not be silly !
Nothing comes close to a casoli replica in yellow
Not even close. The MHR is the best looking Ducati!!
I might go as far as to say the best looking Ducati is the one you're riding!!
@@obsession_engineering The 999 is the only Ducati scale model I have on my desk so staring at that occasionally during the last 15 years has lessened the trauma when I see one in the street for real :D
Hi Dave. Just wondering if you know what brand the replacement reg rec is? Looking for a quality replacement for an srad 750 which also love eating these
That one was from www.electrexworld.co.uk/
@Obsession Engineering thanks a million Dave 😊
Still easier than a ST2 !
Great video. Is it worthwhile putting copper grease on the earth wires. Does that help or hinder the connection?
Probably not enough copper and too much grease to help. A dab of grease over the top might not hurt, keep any corrosion away
Don't use copper grease. It's slightly conductive so if it melts or runs because of heat it could cause a short circuit. If you're going to use any grease on electrical connections it should be special-purpose dielectric grease. It's not bloody cheap though. I bought a tube of it recently and it cost me about 15 quid. It's going in all the 748's connector blocks/boots.
Did good Dave explaining how the system works, how to check diagnose. TH-cam is loaded w/ tutorials, yours is pretty great. Owned Ducati 999 same same CanBus electrical system truly 'magic' and ahead of the game ..Pierre Terblanche is genius personified.. Went thru the same befuddling stuff w/ mine. A 'donut' amp meter is also a great tool to diagnose electrical issues., starter draw. Add a Motolectric HICAP battery cable upgrade. Have to piggyback cause you'll never be able to pull the cable thru the battery holder if your try and remove OEM battery cables you'll hack it up... pickup a Ricks Hi-torque starter, especially if your running an overbore kit, HC Pistal pistons @ 13.5:1. A QUALITY battery cable upgrade works wonders with the Ducati starting system "Sprag Saver" ! installing a new starter clutch is no fun ..
Not sure the little 749 needs more starting punch, or at least not as much as a big bore high comp version would need. Always useful feedback though and appreciate the comments
A lot of people were put off by the ugly headlights and the double sided swing arm
Date love Channel.restore and sell 998.
Christ, look at the fins on that🔥! Take a little steak in before you put the fairings back on😹.
So in what way was it faulty then? After all those tests you did you still came to the correct conclusion it was the rectifier. 🪄magic...
No, the rectifier part of the reg/rec was just peachy - it was the regulator part that went the way of the pear.
@@phillee2814 pear 😹