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Author Topic: Suzuki FA50 Moped - "The Bumblebee," or, my first two stroke  (Read 10668 times)

Offline Kamn

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Re: Suzuki FA50 Moped - "The Bumblebee," or, my first two stroke
« Reply #20 on: Sep 02, 2016, 08:21:47 »
Looks like you can make your own clutch holding tool with some welding vise grips, heat, and a hammer
'82 Kawi GPZ550

'73 CB750 K3 (needs restoration)

Offline advCo

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Minimal damage, nut is loose. Let's carry on.


Sent from my iPhone using DO THE TON
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline DesmoBro

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Re: Suzuki FA50 Moped - "The Bumblebee," or, my first two stroke
« Reply #22 on: Sep 02, 2016, 15:00:14 »
I actually have read through there. The formatting on that forum makes it a pain in the ass to read though. I guess a popular mod on the FA50 is to shave the mating surface of the head, I think you can take about 1mm off to make the fins sit even with the cylinder. I'm not set up for it, all I have is a belt sander


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You have To click "flat view " i believe or yea nothing makes any sense and it just seems like a jumble....and hot damn i wonder if thats a peugeot or motobecane.......anyways it seems the FA50 has very little compared to some other mopeds along the lines of people going crazy with porting and cylinder boost ports etc.....but you could change that !
"I desire the things that will destroy me in the end"

Offline advCo

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I'm a dummy. The crank seal on this side is behind the bearing, which requires removing frank the crank to access, which I am not getting involved in. The crank seal I bought is for the OTHER side, which is outside of the bearing behind the flywheel and advance mechanism.

 

I am assuming since the flywheel side seal is dry on the outside and there was a buncha dirt and crap in there that it's the suspect. So once the flywheel puller comes in I'll get that done up and get this silly thing back together.


Sent from my iPhone using DO THE TON
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline advCo

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Finally tracked down the electrical issue to a faulty stator. The primary winding had a break in it somewhere. Since used stators are pretty expensive and who knows if they're any good, I bought some magnet wire and I'll be rewinding that later this week.

While I have the flywheel and stator off, I got to the crank seal under there and replaced it. The rubber grommet that seals off that side of the case had popped right out and it was all full of dirt in there. I put it back in with some hondabond make sure everything stays out.



Cleaned up the oil tank, installed new throttle cable and wrapped up and reinstalled the harness.


Sent from my iPhone using DO THE TON
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline Maritime

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Re: Suzuki FA50 Moped - "The Bumblebee," or, my first two stroke
« Reply #25 on: Sep 27, 2016, 10:18:23 »
Nice work, good thing to do while the shit is apart for sure.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline advCo

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I worked through the electrical to figure out the spark issue, tested all the elements on a running FA50.  PEI unit is good, coil works, i swapped/tested everything else but none of the other stuff effects the ignition circuit. Narrowed it down to a faulty primary winding on the stator - had open circuits between the two main leads. So rather than paying $50 for a used stator I decided to DIY it and bought a roll of 34 AWG magnet wire from eBay and went to town.



Forgot to take any pics of the winding base after i cleaned it up. But I chiseled off the epoxy and existing wire all the way down to the plastic post. The most important thing is that the metal mount is isolated from the winding. This one had a plastic insulator but I have read that teflon or thin cardboard works well to cover the post. Filed the posts down and desoldered the wires.



3 hours later...



The resistance value in the manual is 90-110, so I'm quite a bit higher. I'm going to test it out and see how the spark looks. I can always unwind and get it back within range if it doesn't work.

An important bit is to scrape off the insulation before wrapping it on the post. I took about 2" and scraped the insulation with an exacto, wrapped it and put a dab of solder to hold it in place. Then resoldered the wires.





Sent from my iPhone using DO THE TON
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline DesmoBro

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Re: Suzuki FA50 Moped - "The Bumblebee," or, my first two stroke
« Reply #27 on: Oct 03, 2016, 21:49:21 »
You know there only $15 on treatland i hope
"I desire the things that will destroy me in the end"

Offline advCo

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Suzuki FA50 Moped - "The Bumblebee," or, my first two stroke
« Reply #28 on: Oct 04, 2016, 03:08:57 »
Unwound until I hit spec. Once I soldered the end back on I was just under 110 ohms, right within spec.



A coat of quick set epoxy and she should be insulated and ready to pop back in tomorrow.




Sent from my iPhone using DO THE TON
« Last Edit: Oct 04, 2016, 03:11:14 by adventurco »
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline Maritime

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Re: Suzuki FA50 Moped - "The Bumblebee," or, my first two stroke
« Reply #29 on: Oct 04, 2016, 09:51:45 »
Nice work, bring this sucker to Barber and we can get it finished and ride it around LOL.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson