Search found 26 matches

by sinjun68
Fri Jun 30, 2017 7:20 am
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

Faulty rotor indeed!
by sinjun68
Thu Jun 29, 2017 10:18 pm
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

UPDATE!!! So, I continued poking and coming up with nothing. My brother stopped by and as we chatted about the issue I went through the basic tests again to illustrate to him. This time however I remembered what Barry had mentioned earlier about the rotor test and how at the low revs I was using in ...
by sinjun68
Tue Jun 27, 2017 7:42 pm
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

I have a buddy with the same bike. he is going to stop by and I am going to try my new VR on his machine. If it doesn't work on his I either received a bad unit or something in my bike cooked it. hmmm
by sinjun68
Mon Jun 26, 2017 2:37 pm
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

reassembled everything back to where it was. Omitting testing wires and jumpers etc. Started bike and it worked for a couple of moments and then gen light came back on and no more charging. checked all wires again, and grounds. Light still stays on and no charging. Bypassed VR and jumped the DF and ...
by sinjun68
Mon Jun 26, 2017 12:22 pm
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

So I tried the test Barry outlined and connected a bulb (spare directional light and socket) from the battery + to the D+ on the voltage regulator. With the Key Off the light illuminated immediately upon connecting it. Started the bike and it remained on with no voltage climb with revs.
by sinjun68
Mon Jun 26, 2017 11:31 am
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

I cracked open the headlight bucket and noticed a couple of wires that have obviously became overheated. The green with blue wire runs to the coil, the blue with green wire runs to the kill switch. I checked for continuity on both wire and it seem there i no break. the wires, where connected in the ...
by sinjun68
Sat Jun 24, 2017 11:48 am
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

A lil more specific info... I have an LED light that is connected where (replaced) the original Gen. Light. Since the LED does not have enough resistance I have attached the 50 OHM resistor to the coil and VR. This was well over a year ago and the new LED gen light has worked flawlessly until now. I...
by sinjun68
Fri Jun 23, 2017 7:54 am
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

My apologize for the typos. (it was late and I was typing fast) It is an 50 ohm resistor used. Snowbum does recommend a 50 ohm resistor to better simulate what a regular bulb would do. He just suggests not placing it in the headlight bucket or soldered to the original circuit board. I also reved the...
by sinjun68
Thu Jun 22, 2017 11:09 pm
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

Re: generator light staying on conundrum

I isolated the brushes from the rotor with a piece of matchbook cover and have continuity between the rings. If it was a failed rotor or another alternator issue would'nt it fail to charge when I removed the regulator and jumped the DF and D+ wires?
by sinjun68
Thu Jun 22, 2017 10:34 pm
Forum: Post 1970 Airheads
Topic: generator light staying on conundrum
Replies: 22
Views: 6060

generator light staying on conundrum

hello folks! Have a 77 R100/7 with aftermarket speedometer and volt meter. Also have LED generator light with 50 Ohm 10 watt resistor (as described by Snowbum article) This has worked flawlessly for a year till yesterday. Not sure what happened but after a 3 hour ride in light rain (coincidence?) th...