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Misc: Charging Systems Series ‘C’ Rapide Battery Not Charging


b'knighted

Well Known and Active Website User
VOC Member
Series Ds did have a charge light so it must be considered as a suitable period upgrade.
 

danno

Well Known and Active Website User
Non-VOC Member
A charge light was never standard. Get rid of it. That is what the ammeter is for!
Not to confuse but ALL the original wires were Black! So a specific colour means nothing except if you find 2 ends the same colour they may be the same length of wire - but check AND LABEL all.

Not that hard provided you do just ONE at a time and make notes.
Thanks for the documents.
Having read the article below and because I have electric start, lights and indicators, I’ve decided to get an Alton alternator rather than a new regulator.
I haven’t spent a lot on the bike so don’t mind the cost too much.

The original Miller dynamo may have been reconditioned during restoration, not sure but as mentioned, the 6v unit plus JG converter is barely enough for the Lucas Rita, Grosset electric start etc..
The Rita ignition works fine and Alton say in a reply that many owners run this ignition with no problems.
 

danno

Well Known and Active Website User
Non-VOC Member
On my own bike I use the original earthing point at the rear of the UFM and take one wire from battery negative, another from the headlamp earth and another from the alternator regulator, all to that one point. So the electrons have a choice of wires or frame parts to travel through.
I have two earth cables running from battery positive. One to the rear of the UFM and the other to the LH tank securing bracket near the UFM point.
I’m used to vehicles that have negative earth but may as well leave the Rapide as is.
Will check with BTH about positive earth fitment before ordering the Alton.
 

vibrac

Well Known and Active Website User
VOC Member
I dont think BTH gives a hoot about your electrics its a separate system
 

vin998

Well Known and Active Website User
VOC Member
VOC Forum Moderator
I dont think BTH gives a hoot about your electrics its a separate system
I think danno is refering to the fact that you can buy the the Alton's in UK from BTH (look on the BTH website) and so he is going to ask BTH about the Alton's polarity options. Having never used an Alton myself I don't know if you can get positive and negative earth versions.

 

Nulli Secundus

Well Known and Active Website User
VOC Member
VOC Forum Moderator
BTH are certainly careful when ordering stuff. On Sunday I ordered a KD1 magneto and this morning they asked what machine it was for because they wanted to get the rotation right first time. When I answered they said I needed the 10mm spacer plate, which was a pain because I could not amend my order and had to order it separately. However, they immediately refunded the shipping cost for the second order, which has made me a little happier.
 

danno

Well Known and Active Website User
Non-VOC Member
I’ve had no reply from UK distributors but Paul from Alton France explains the polarity situation.
The set can be used negative or positive earth with the same rectifier.
May just go with the order direct from Alton as the price, delivery etc is all explained in the email.
 

vibrac

Well Known and Active Website User
VOC Member
Strange
Who did you think were the UK distributors? Did you contact Vincent spares?
 

danno

Well Known and Active Website User
Non-VOC Member
I had a RITA with a JG on a Miller converted to 12 volt. That did not work very well. The RITA sucked up more electrons that the JG and Miller could make. So over to an Alton. Which was good during the day but after an hour or so night ride the turn signals wouldn't flash. So now an Alton and a BTH.
Steven
How’s the starting with the BTH magneto?
Sounds like that with my prospective Alton, I still may not have sufficient power reserves using the Rita.
A BTH would free up the Alton and I could possibly get a deal if I bought the two together.
The other thing is how maintenance free is the BTH mag?
Benefit of electronic ignition is they’re pretty much fit & forget. Grosset ignition system looks efficient. Unable to find any info or price though.
 

Robert Watson

Well Known and Active Website User
VOC Member
The BT-H "Mag" is actually a CDI ignition with it's own internal generator. I have had one on a Rapide for several years and the only issue has been self inflicted. I did try and run it using NGK 7 plugs but it hated to start cold, switched to 6's and never another problem.
 

vibrac

Well Known and Active Website User
VOC Member
They do go rusty internally how bad they have to get to affect running is conjecture I have had one since year one of availability
 

danno

Well Known and Active Website User
Non-VOC Member
BT-H vs Grosset.
Did read here that the Grosset ignition is true fit & forget. Don’t think it comes with coils though.
Apart from the ignition, I don’t have much to power on the Rap. Lights, indicators and Grosset starter. I always use the kick, mainly due to the starter sounding like it’s struggling a bit.
 

Dave61

Well Known and Active Website User
VOC Member
BT-H vs Grosset.
Did read here that the Grosset ignition is true fit & forget. Don’t think it comes with coils though.
Apart from the ignition, I don’t have much to power on the Rap. Lights, indicators and Grosset starter. I always use the kick, mainly due to the starter sounding like it’s struggling a bit.
Danno,
Francois will supply with or without a coil, think they were standard fitment on Egli`s so good enough for me.
Cheers
Dave
 

danno

Well Known and Active Website User
Non-VOC Member
Danno,
Francois will supply with or without a coil, think they were standard fitment on Egli`s so good enough for me.
Cheers
Dave
Thanks. I’ve read that the coils may burn out if ignition is left on.
Not sure how long this takes.
I assume electronic ignition systems use a key barrel switch to turn on as with a conventional setup.
I have one mounted in the headlight for the Rita.

Just wondering as a security point, how the BT-H is disengaged from the ignition system.
Would have thought a key and a tamperproof make and break switch would be needed.
 

Dave61

Well Known and Active Website User
VOC Member
Thanks. I’ve read that the coils may burn out if ignition is left on.
Not sure how long this takes.
I assume electronic ignition systems use a key barrel switch to turn on as with a conventional setup.
I have one mounted in the headlight for the Rita.

Just wondering as a security point, how the BT-H is disengaged from the ignition system.
Would have thought a key and a tamperproof make and break switch would be needed.
Hi Danno,
I'm going to fit an idiot light so I know the ignition is on & just a switch to turn it on mounted on the toolbox or headlight.
As standard there isn't any security as everything is controlled by the light switch so I'm not convinced a keyed switch is a deterrent.
Cheers
Dave
 

danno

Well Known and Active Website User
Non-VOC Member
Hi Danno,
I'm going to fit an idiot light so I know the ignition is on & just a switch to turn it on mounted on the toolbox or headlight.
As standard there isn't any security as everything is controlled by the light switch so I'm not convinced a keyed switch is a deterrent.
Cheers
Dave
Ok thanks.
So the ignition key system I have is a bonus really. Will wire whatever I get into this. There’s a red light mounted in the headlight too for ignition on and charge which is handy too.
On a general point, (should know this really) how do you stop the engine on a standard Vin. Decompression lever?
 

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