Search found 1571 matches

by Kurt in S.A.
Sun Apr 07, 2024 4:42 pm
Forum: Post 1970 Airheads
Topic: Voltage regulator questions
Replies: 13
Views: 374

Re: Voltage regulator questions

Years ago, I replaced the multi-terminal cable that connects on the backside of diode board to the three phases on the alternator. I think I was putting on the solid mounts (my board had the rubber mounts) and noticed that the multi plug had corrosion build up in it. Got three separate thick cables ...
by Kurt in S.A.
Fri Apr 05, 2024 11:59 am
Forum: Post 1970 Airheads
Topic: Voltage regulator questions
Replies: 13
Views: 374

Re: Voltage regulator questions

What model/year bike are you talking about? You should probably measure the resistance across the slip rings on the rotor. Carefully life the brushes off and slip in a business card. Measure ring to ring.
by Kurt in S.A.
Thu Apr 04, 2024 6:48 am
Forum: Post 1970 Airheads
Topic: Float adjustment
Replies: 47
Views: 6830

Re: Float adjustment

I think Barry has stated an important aspect of adjusting the floats. It's a starting point for future assessment. But I'll also add that it seems that with the float body parallel to the body of the carb, that puts the most pressure on the needle and seat to ensure it stays sealed. With the float p...
by Kurt in S.A.
Wed Apr 03, 2024 2:48 pm
Forum: Post 1970 Airheads
Topic: Float adjustment
Replies: 47
Views: 6830

Re: Float adjustment

Let me get right on that! I wasn't trying to say that it was perfectly level, but given that the forces balance out when in turns, and that the bike has a decent suspension, it's not going to be all that "bubbly" in my estimation. Sure, maybe some ripples here and there. But you want the m...
by Kurt in S.A.
Wed Apr 03, 2024 1:13 pm
Forum: Post 1970 Airheads
Topic: Float adjustment
Replies: 47
Views: 6830

Re: Float adjustment

I understood what you were saying. Most of the time, we're riding down the road straight-and-level. In turns, we've leaned the bike over and the forces keep the fuel more or less level. But if the fuel level is too low, it's harder for the carb to draw the fuel into the throat of the carb. Clearly y...
by Kurt in S.A.
Wed Apr 03, 2024 12:23 pm
Forum: Post 1970 Airheads
Topic: Float adjustment
Replies: 47
Views: 6830

Re: Float adjustment

It does take more differential pressure in the carb throat to lift fuel from a low volume position in the bowl. Thus, it might lean the mixture out somewhat in that case.

Kurt
by Kurt in S.A.
Mon Jan 08, 2024 6:21 am
Forum: Post 1970 Airheads
Topic: Loss of compression
Replies: 12
Views: 1219

Re: Loss of compression

How many miles on the engine?

Kurt
by Kurt in S.A.
Sun Jan 07, 2024 4:21 pm
Forum: Post 1970 Airheads
Topic: Loss of compression
Replies: 12
Views: 1219

Re: Loss of compression

If it were me, I'd recheck my procedure for valve clearance setting just to be sure. Pretty unusual for one side to be fine and the other side be way off. Recall that valves are set at TDC on the compression stroke. Once you do one side, the engine must be rotated 360 degrees to set the other side. ...
by Kurt in S.A.
Fri Dec 29, 2023 6:34 pm
Forum: Post 1970 Airheads
Topic: 1972 R75/5 ignition key hard to push
Replies: 7
Views: 675

Re: 1972 R75/5 ignition key hard to push

I finally got home and measured my R69S and R25/2 key...they're both 5mm across the widest part. I suspect that's not really the issue...it might have to with the shape of the cone which separates the contacts within the ignition. Not sure what to say either. Here's a picture of keys I bought...the ...