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Search found 85 matches

by johnstas617
Sat Mar 16, 2019 4:49 am
Forum: Vintage (1948-1969) Motorcycles
Topic: R51/3 Engine bearings numbers
Replies: 11
Views: 3470

R51/3 Engine bearings numbers

Hi
Online there’s a set of 5 bearings costs 110$+ shipping.
Was thinking maybe locally I can find them cheaper.
Anyone has their code numbers?
Thanks
by johnstas617
Sun Sep 02, 2018 8:08 am
Forum: Vintage (1948-1969) Motorcycles
Topic: LED lights
Replies: 57
Views: 19650

51/3

I wanted to let everyone know that based on a recommendation on these forums I ordered bulbs from the website below and I am VERY happy with them! I have ordered LEDs before and I was very unhappy with the quality, the light pattern and the output. The ones from the website below are not the el-chea...
by johnstas617
Tue Sep 27, 2016 1:08 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Electronic Voltage Regulator R51/3 year 1951
Replies: 11
Views: 2653

I went to a workshop who has

I went to a workshop who has experience with motorcycle for 30 years That's how the owner connected things B+ directly from battery / headlight D+ going to 61 on generator DF going to field winding Masse going to charge light on heads hell (earth) It works ok now but still i think the light is maybe...
by johnstas617
Tue Sep 13, 2016 5:16 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Electronic Voltage Regulator R51/3 year 1951
Replies: 11
Views: 2653

No luck for now

Hi Tommy

I did just as you said but battery is not charging
Red light stays on and battery isn't charging its steady at 5.4V
by johnstas617
Mon Sep 12, 2016 3:04 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Electronic Voltage Regulator R51/3 year 1951
Replies: 11
Views: 2653

Hi Tommy 1. Black wire now

Hi Tommy
1. Black wire now connected to DF on regulator.
2. You said D+ should connect to 51/30 on Generator so I assume that B+ is going to 51/30 in the headlight?
3. What is "Masse"?

Thanks a lot!
by johnstas617
Sun Sep 11, 2016 12:50 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Electronic Voltage Regulator R51/3 year 1951
Replies: 11
Views: 2653

Thanks They are the same

Thanks
They are the same
It's still strange to me that the 61 AND 50/31 are connected to each other and grounded!
by johnstas617
Sun Sep 11, 2016 11:22 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Electronic Voltage Regulator R51/3 year 1951
Replies: 11
Views: 2653

Electronic Voltage Regulator R51/3 year 1951

Hi Would appreciate a lot getting help from you guys cause I'm a bit confused wiring this regulator. The only wire connected right now is the blue wire going from pin 61 on Generator to the (-) pin of the charge light (on the headlight) . it has a constant earth so the moment I push the key in the c...
by johnstas617
Sun May 15, 2016 6:43 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Post photos of your vintage (pre-1970) BMW motorcycles
Replies: 158
Views: 39191

R51/3 1951 Israel

After 9 months of restoration and the help of you guys here answering my dumb questions it's ready ..
by johnstas617
Wed Apr 13, 2016 4:34 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Voltage Regulator Test - R51
Replies: 3
Views: 1052

thanks

A good info !
I have a different voltage regulator / it looks a bit different also by means of connections
by johnstas617
Tue Feb 09, 2016 5:55 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Final drive questions
Replies: 4
Views: 1237

Of course it does

The spring side of the seal is facing the back of the bike