Mounting the [SF] Bosch Regulator - Vibe Free

Nothing wrong with the original 750 regulator, as long as it has been cared for.  They are very reliable, and almost indestructable, if mounted correctly.  They usually go tits up after a spell of abuse, once the points have burnt to a certain point, usually due to excessive vibration, they are ripe for replacement.  Poor electrical connections can have a similar effect.

Quite a few OCT customers have opted for the Bosch electronic copy of the original, just to keep the bike cosmetically correct.  If my old Bosch in the GTL ever gives up, I will surely choose the Bosch copy.  Sure, lots of el-cheapo stuff around that will work satisfactorily, some good, some bad.  You gets wot you pays for... I'm quite certain the Bosch copy will hold up just as well as the original it replaces.

Paul, the frames have differing brackets for the regulator.  Early frames have a horizontal steel strap from one side to the other, the regulator is mounted on grommets and spacers.  Later frames have small vertical tabs either side, the "trampoline" is fitted in an arc between them, with the regulator "solidly" on the strap.

The big problem is routing the breather hose past the regulator without negating the wobbly mounting.

piet
 
http://dynamoregulators.com/dvr4.php I bought one of these, just haven't fitted it yet. I wouldn't trust those old relay sets after my starter relay stuck on and destroyed the starter motor on my SF3.
 
the thing with the old bosch stuff is you can service them believe it or not  :o, unlike expensive modern replacements >:D
the strap on the sf1/gtl have vertical mounting but the rubber is a flat strip all you have to do is drill your holes and bend the strap.
only thing i can say is use large washer's
regards andy
 
you certainly don't need big batteries either (as Paul M says) when I built my Egli, (1979) I used a battery for a Honda 400/4, a tiny thing, no idea of the capacity, but I mounted it low down between the engine plates at the rear of the gearbox, it worked perfectly, not having any cranking issues, and coping with all normal forms of lighting etc, in two years of road riding (twice to the IOM) it never gave me a problem, when the lights were taken off together with all other "road" ancillaries', including dynamo and starter, the 400/4 battery was retained and still never gave any problems with a full day or even weekend of track use, it was only doing total loss ignition (points set), but the starter was reinstalled, with a high tension button from a tractor (no LT and still no dynamo) for ease of starting/testing when at home, and even then it would crank the bike more than enough times before the mains charger had to plugged into the system to recharge it.
CLEM
 
Honda 400/4 battery has 12 Ah. Used one in a weekend situation with the 3CL myself.

Regards,
Gerald
 
laverdas said:
the thing with the old bosch stuff is you can service them believe it or not  :o, unlike expensive modern replacements >:D
the strap on the sf1/gtl have vertical mounting but the rubber is a flat strip all you have to do is drill your holes and bend the strap.
only thing i can say is use large washer's
regards andy
Click to expand...

Trouble is, not many people around still capable of doing it correctly.  I have access to the instructions and various manuals, but it's mostly black magic to me...

Thankfully, I have a mate that is quite at home with electricks, I can always consult him when I run out of ideas. :D

piet
 
Thanks everyone, especially to Piet who gave me the knowledge that not all SF regulator mountings are the same, dependent on year and model.

In my humble opinion the laverda mount design (on the early SF like mine) is not good enough and so I will design something to make it better, whilst keeping the basic architecture.  I guess that is why the factory later changed to the arching rubber strap design.

It is funny that the conversation has moved somewhat towards batteries as fitting a smaller battery is why I'm working in this area in the first place.

Muchos thankos

Hag
 
Forgot to add, a 18Ah gel battery is more than enough to keep a 750 happy.  No problems with starting, the little dynamo keeps it topped up nicely, even with daylight lights.  Makes a bit of space for additional tools, or a can of beer...

piet
 
Yes that's it Piet, one of the problems I have with the SF is minimal carrying capacity under the seat for bits and bobs. Especially for longer trips.

I've been toying with 16 or 18AH. I'm going to trial an AGM -16 to begin with as they are not too expensive. Will let the forum know how I get on.
 
16AH Odyssey works fine on my SFC750 - and has done so for the last 5 years. At the risk of upsetting Paul M, that's with DMC fitted!  Reckon any decent AGM of that size would easily do the job.

Swapped out the old (bobbin mounted) mechanical regulator when I found its output wasn't being properly controlled earlier this year. Used the Bosch electronic version to maintain original appearance.
 
sfcpiet said:
  Makes a bit of space for additional tools, or a can of beer...
Click to expand...

So it does!  :)
38964408911_eac774c457.jpg
 
Go for a ride then take the top off that bottle.
There'll be no beer left in the bottle by the time the geyser has subdued.

Paul
 
Oh yes, Broadside is excellent.  Adnams suits me, I can drink it to oblivion and not get a hangover. Heaven knows why. A trip to Southwold is very highly recommend. Some of the pubs serve the whole range. Most serve a selection. Maybe a tour on Laverdas next year?  Way over east and riding roads not so good, buy hey, some things are worth the sacrifice.
 
when i work over the east coast i always stop at the Poachers Pocket Nr Bacton excellent beer and food and a nice landlord and landlady
 
:D. And let's not forget we covered tits, 3 replies in!

All the good stuff.

Anyone got a nice bacon sandwich recipe?
 
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