Topic: The Patina Bike, Stev-o's '71 CB500

[vfourfreak]

Shiney new parts Stev-o !!! That could be the thin end of the wedge, leading to a full blown resto ! Be careful, new parts in the post (err mail) can be addictive.

Kev

[dave500]

Stev-o, I'm still amazed you bought that seat.  Is the king/queen seat boxed up and ready to go out?

If you're looking for a 750 KQ, you can have this one that came with mine for shipping and packaging...

Are you kidding?  I've thrown numerous ones just like that in the trash and suggest the same to you!

great accessory for a torture and bondage dungeon?they look like really out there man?

[Stev-o]

Shiney new parts Stev-o !!! That could be the thin end of the wedge, leading to a full blown resto ! Be careful, new parts in the post (err mail) can be addictive.

Kev

No full blown resto on this one, Kev.  The old controls were toast and had butchered wiring and the grips and footrests weren't worth salvaging.  Still plenty of patina!

[edwardmorris]

Stev-o, I'm still amazed you bought that seat.  Is the king/queen seat boxed up and ready to go out?

If you're looking for a 750 KQ, you can have this one that came with mine for shipping and packaging...

Are you kidding?  I've thrown numerous ones just like that in the trash and suggest the same to you!

I know you have I thought goldarrow was looking for one (see first quote). Its essentially garbage, and will end up there once I need room on my garage shelves...

[Stev-o]

It was a fairly good weekend for The Patina Bike....I think my post lady hates me [she has to walk all the way down the driveway, then up the stairs to drop the packages off by my front door]





Got the new clutch cable on, L cover all buttoned up and cable adjusted, clutch feels good. New foot rest rubber on too.
Look at all that nice Patina. Really doesnt look that bad, must be an adjustment on the camera....ha!




Got the new L control on and connected up, Gran Turismo grip on...





New R Control on and connected, bike came with like new throttle cables so those are being reused, new grip....




New ignition switch, new plugs and plug caps....





Good news/bad news........

Good:  starter, blinkers, horn, brake and idiot lights all work. 

Bad:    no friggin spark!

More on this tomorrow........

[SOHC4 Cafe Racer Fan]

It's like Christmas!

[Greggo]

Yamiya for the win!

[Stev-o]

Yamiya for the win!

Oh, yeah! Thanks for the info on that. And I think I bought the L control from you. Look familiar?

[dave500]

I like it!once its all sorted and running just before the safety inspection spray that fake spider web stuff on the engine etc and say ive just rolled it out of a barn!maybe even stash a real huntsman on it?

[Stev-o]

I like it!once its all sorted and running just before the safety inspection spray that fake spider web stuff on the engine etc and say ive just rolled it out of a barn!maybe even stash a real huntsman on it?

Good idea Dave!   But since it's over 25 years old, I can register it as an antique and don't need an inspection.

[dave500]

ok,itll be fun anyway?

[Stev-o]

Ok, as reported yesterday, no friggin spark.  I'm a little baffled, plz help me diagnose this.

New, fully charged battery, 12.55 volts, good.   Voltage at the blue wire @ points is 11.17, ok.



Voltage at the yellow wire @ points is .017, bad. These checks are with a card in the points, BTW.



Voltage at the yellow wire connection near the battery is 11.76.



The yellow wire from that connection to the points ohm out, WTF? How could I be losing voltage??
What do you make of this???

I have points/condensers on order, but doubt that is my issue.

[goldarrow]

Did you check the connections at the coils? And test the coils?

[Stev-o]

Did you check the connections at the coils? And test the coils?

The black w/wite runner wire has 11.73V at the coil. Coils test at 5 ohm...

[dave500]

try cleaning all the connections in the head light birds nest and make sure some po hasn't mismatched any of the colours,also the gang connectors in the white plastic housings near the electrical plate,check the plug caps resistance aswell.
 the old plate etc has its own patina?ill bet it has a trickle corrosion short amoungst it down there?dissemble and rebuild that aswell,the one place you don't want patina?

[MoMo]

Steve, are you saying you do not have spark at all ?

[Stev-o]

Steve, are you saying you do not have spark at all ?

Correct, no spark at plug #1 or 2. 

try cleaning all the connections in the head light birds nest and make sure some po hasn't mismatched any of the colours,also the gang connectors in the white plastic housings near the electrical plate,check the plug caps resistance aswell.
 the old plate etc has its own patina?ill bet it has a trickle corrosion short amoungst it down there?dissemble and rebuild that aswell,the one place you don't want patina?

I'll recheck all connections, the wiring is in really good shape, no hacking at all ( and new controls and ignition switch). 

Just got home and new points/condensers did not arrive. 


What else can I check?    Thanks. 

[MoMo]

There is spark at 3 and 4?

[Stev-o]

There is spark at 3 and 4?

Haven't check them as I haven't installed the new caps yet.  But switched the blue and yellow wires at the coil and made no difference. 

I know there is a simple solution but diagnosing it is the difficult part. 

[MoMo]

You have cleaned the points with a point file or emery board and electronic cleaner?

[Stev-o]

You have cleaned the points with a point file or emery board and electronic cleaner?

I did clean with a points file, they are in poor cond.   will install new as soon as I get em.

[MoMo]

You have cleaned the points with a point file or emery board and electronic cleaner?

I did clean with a points file, they are in poor cond.   will install new as soon as I get em.

Probably best to get the entire plate assy(points, condensors, etc

[Stev-o]

You have cleaned the points with a point file or emery board and electronic cleaner?

I did clean with a points file, they are in poor cond.   will install new as soon as I get em.

Probably best to get the entire plate assy(points, condensors, etc

Ordered points and condensers, how could the plate prevent spark? It's not badly rusted.

Thx for your help.

[MoMo]

Mentioned it because the entire assy is not all that expensive if I remember correctly.  Plus, you get all new screws, which usually are buggered all to bits by ham-fisted wannabe wrenches...Larry

[Stev-o]

Mentioned it because the entire assy is not all that expensive if I remember correctly.  Plus, you get all new screws, which usually are buggered all to bits by ham-fisted wannabe wrenches...Larry

Points plate is $60, just points/condensers is half that.  I got no buggered screws but points screws were loose, so PO was in there for some reason?