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by Tim Allman
Fri Mar 22, 2024 12:42 pm
Forum: Honda Dream - CA72 | CA77 | CA78
Topic: C72 from France
Replies: 29
Views: 908

Re: C72 from France

That is very true. :-) Another member here, GMan, did a great write-up on rebuilding the front and rear shocks and listed seals etc that are required. This may help you. I miss his contributions. Here's a link to his Flicker site. You'll have to scroll down to find pictures of rebuilding shock abso...
by Tim Allman
Fri Mar 22, 2024 12:38 pm
Forum: Motors - 247cc | 305cc | 337cc | 350cc
Topic: Crankcase clacking when hot - NOT kickstart
Replies: 6
Views: 94

Re: Crankcase clacking when hot - NOT kickstart

You say that the sound comes from low down in the engine so I don't think that the cam chain would be the most likely cause. The first place I would look is at the primary drive chain. It's low in the engine, would do the same thing if loose and it's easy to get at, being behind the left side cover....
by Tim Allman
Sat Feb 17, 2024 1:00 pm
Forum: Electrical - Wiring
Topic: Half wave rectifier
Replies: 10
Views: 421

Re: Half wave rectifier

I have access to a complete Honda Workshop Manual for Honda 65 series and Honda 50 series models. Published in August 1964. It's a large file (50+ MB) so it would have to be emailed. The workshop manual has several pages discussing the charging system and selenium rectifier, including graphs, photo...
by Tim Allman
Fri Feb 16, 2024 5:04 pm
Forum: Electrical - Wiring
Topic: Half wave rectifier
Replies: 10
Views: 421

Re: Half wave rectifier

My question is since the coil, actually both coils, are grounded does that make them half wave producers? See S90 schematic for comparison of half and full wave generation. Many remember having poor lighting on these small bikes at low rpm’s as the lighting is AC and rpm dependent. Would it benefit...
by Tim Allman
Fri Feb 16, 2024 10:01 am
Forum: Electrical - Wiring
Topic: Half wave rectifier
Replies: 10
Views: 421

Re: Half wave rectifier

I have found a wiring diagram here . If you download it you can get a higher resolution copy. Questions. 1. Is this the correct wiring diagram? 2. What do you mean by lighting coil ? Is it the generator coil on the left side in the diagram? 3. Do you know what is connected to the rectifier with a wh...
by Tim Allman
Thu Feb 15, 2024 12:20 pm
Forum: Electrical - Wiring
Topic: Half wave rectifier
Replies: 10
Views: 421

Re: Half wave rectifier

I was about to "correct" you and tell you that it's really a full wave rectifier but I'll be damned, after looking at the wiring diagram I see that it really is half wave! Wow. Honda really went cheap on this model. Half wave rectification is very wasteful but it may be that the battery cannot handl...
by Tim Allman
Thu Feb 15, 2024 12:01 pm
Forum: Honda Superhawk - CB72 | CB77 | CP77 | CBM72
Topic: Starter chain on CB77
Replies: 7
Views: 250

Re: Starter chain on CB77

There should not be noises like the ones you described. The starter isn't silent but should just sound like an electric motor.

Could you send a picture of the region of interest and your line-up of starters?




 

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