Author Topic: Police CB650PZ (Read 109912 times)

Frankenkit · « **Reply #475 on:** April 06, 2009, 03:22:32 PM »

my bike FLIES at speed... haven't seen any problems, but I use regular octane, maybe mid grade...

MickeyX · « **Reply #476 on:** April 06, 2009, 06:16:22 PM »

Kit's bike has no problems in 3rd-5th, just 1st and 2nd seem to bog a bit. Reading others posts though, I kinda get the feeling it's more like the gearing holding it back than anything. What a fun ride though.

Hush · « **Reply #477 on:** April 07, 2009, 04:10:06 AM »

Yeah I spend as little time as possible in 1st and 2nd, they are just crawler gears, make good brakes too when coming up to a crossroads.
Find a nice long straight road and give it death in all gears, the pickup is amazing on these bikes when they are in tune, quite a scary ride when you give it a full right wrist twist.

Hush · « **Reply #478 on:** April 11, 2009, 10:14:34 PM »

Dear diary: Nice day for a ride so left Jaffa's Suzuki in the shed and took the Copperchopper for a run, 2 hours of sheer bliss.

Minor niggle to spoil my day, cornering seems to have deteriorated, I was hoping it was just me getting gamer on the corners but even at slow speeds feels like when cornering left the rear goes all to Hell, not so bad cornering right.
Suspect the rear shocks are finally after 30 years of good service handing in their knife and fork.

I do need to replace the front fork seals so looks like I maybe doing both ends, I'll see what the forum members suggest.
Not sure about sourcing shocks for a 30 year old bike, probably need a second mortgage to afford them too.

Soos · « **Reply #479 on:** April 12, 2009, 02:48:22 AM »

I got cheap rear shocks, and the ride improved in cornering(or at least how it felt to me).
I am regretting buying the cheapo shocks though.

I've rode a 400 twin with the nice (?)nitrogen charged shocks with the piggyback canister.
felt stiff to me initially, then he dialed them in for my lighter weight(he is 220+, i'm 160 wet).
WOW.
He adjusted the rebound and compression nettings, and it rode like a completely different bike.

I would suggest getting what you can afford.
Even the bottom of the barrel aftermarket stuff is around the same quality of a 30 year old part. And WAY better than a worn out 30 year old part.

l8r

Hush · « **Reply #480 on:** April 12, 2009, 11:11:15 AM »

Yeah I've seen the nitrogen ones but don't want to alter the classic look of the bike so will find something that at least looks stock.

Hush · « **Reply #481 on:** April 13, 2009, 11:41:09 AM »

Dear diary: Well I finally had to bite the bullet and do a real test on the regulator, after reading up on it, it wasn't such a mission.
Using lowest ohms range on multimetre I ran one tester cable to the green and then the other to each of the 3 yellow wires.
According to the book I should have had even numbers from all yellows, not even!
I got 3's 8's and 5's then reversing the wires I should have got the same numbers backwards...nothing nil nudda nix...........conclusion is that regulator is screwed and probably has cooked my less than year old battery as well.
Will have to hunt down to the wreckers for a replacement.
Did some reading on handling or lack of it on these 650's, mine seems to want to jump out of corners and this corresponds with stuffed rear shocks and worn swing arm bushes as well as needing front fork seals replaced.............seems I'm in for an expensive and time consuming rebuild to get any sort of handling.
Have decided to get the regulator first so at least i know the bike will be charging, then front fork seals then look at the back area of shocks and swing arm.
Hopefully by doing it in stages like that I will still get to ride her as much as possible.

Hush · « **Reply #482 on:** April 14, 2009, 08:46:14 PM »

Dear diary: woe and woe, still no luck on the charging front, wrecker has no parts even if I do find a fault.
After some testing the regulator maybe blameless but the stator is now becoming the prominent favourite as culprit for lack of charge.

Battery looks like it has been boiling, main battery cable is redish purple so think there may have been some heat there too.

Amazingly thye bike is mechanically running great!

Think I'll strip the electrical parts off the bike tomorrow and get an auto electrician to test them for me, at least that will give me a starting point to work from.

Buber · « **Reply #483 on:** April 14, 2009, 11:17:08 PM »

Front fork seals is a 2-3 hour job. Swingarm is not that difficult either, depending on amount of rust. And you have a greasing point on the swingarm too, maybe pumping some grease will do?

Hagon does very nice (and expensive) classic shocks for our bike...

Hush · « **Reply #484 on:** April 15, 2009, 01:36:15 AM »

Cheers Buber, I'll check out the Hagon shocks.
I've done plenty of fork seal replacements so that's nothing new but dropping the swing arm will be new territory, it takes half the day just to drop the panniers and rear wheel.

Buber · « **Reply #485 on:** April 15, 2009, 05:38:03 AM »

I must admit that I'm on a budget, soo.... My shocks have now compression inserts (like really tall washers) on the rear...
And just lately I found pretty good replacement for brake pads... EBC DP114 or DP105 plus some grinding time, and here you go! Instead of 50U$ I paid 12$...

Frankenkit · « **Reply #486 on:** April 15, 2009, 08:19:07 AM »

If your battery is getting boiled, I'd think about your regulator, man. If your regulator isn't functioning correctly and letting your battery cook, then you can't expect even your high-end battery to store charge correctly.

Test it by setting to DCV and testing your battery cable voltage at rpms

around 5k you should still only be pumping out 14.5. If more than that, you can say your regulator isn't quite up to snuff.

Hush · « **Reply #487 on:** April 16, 2009, 10:59:14 PM »

Battery fully charged, reads 12.6 volts at idle then with headlight on reads 12.4 volts.
Keeping bike revved at over 5000 rpm with or without light 13.2 volts.
What the Hell does this all tell me???
Bike starts easy as, runs great.....riding it tomorrow charge or no charge as there is a road hill climb out in the country I wanna go see and the Autumn weather is gonna be primo so I don't care if I have to push it all the way home...she aint staying in the shed tomorrow!

Probably have to crash start her after watching for a few hours but that's only a foot or so of roll and she fires right up.

Soos · « **Reply #488 on:** April 17, 2009, 10:53:48 AM »

Really?

You are serious you can do a rolling start (aka bump start) with your cb650?

I've tried that on a few occasions, and unless I'm on a BIG LONG hill, she will not do a rolling start for me no matter what I do.

hrmm....

I feel a new thread coming on....

l8r

Frankenkit · « **Reply #489 on:** April 17, 2009, 03:59:16 PM »

try doing it in 2nd or 3rd?

martino1972 · « **Reply #490 on:** April 17, 2009, 04:34:02 PM »

i got a suicide shifter and even I can do it,pop her in 4th gear give a quick bump and she runs......

Hush · « **Reply #491 on:** April 17, 2009, 05:06:14 PM »

Yup the old crash (bump) start, hopefully a thing of the past when I figure this charging ciruit fault out.

Hush · « **Reply #492 on:** April 18, 2009, 01:18:10 AM »

Dear diary: Had a great day in the country riding through the twisties, 30 miles of bad road aint so bad on a bike.

Nasty kick from behind when cornering had me doing some white knuckle riding on a few corners, am firmly of the belief now that my swing arm bushes are worn out and possibly 30 year old shocks in need of replacement.
Big shame as the engine is running sweet as.

Rode with headlight off and only wee park bulb glowing in front, bike was easy to start when I got home so definitely loosing charge as I ride.
After retesting stator, rotor, regulator with little brothers help, it seems likely the stator is earthing somewhere and therefore I'm not getting the full charge from the alternator.
Was wracking my brains where to get another stator from to at least test my theory that mine is coozed.
Wreckers had none and none for sale on Trade-me, then I remembered my brother-in-law bought two 650's last month and not sure what he was doing with them.
Quick text and he rang me back to say pop over tomorrow and he's pretty sure he has a spare for me!

Frankenkit · « **Reply #493 on:** April 18, 2009, 11:23:41 AM »

schweet!

Hush · « **Reply #494 on:** April 18, 2009, 07:17:11 PM »

Look what I borrowed!

Bro is rebuilding his bikes motors so he don't need these for a few weeks, will have tested out my bits by then.

Hush · « **Reply #495 on:** April 19, 2009, 08:13:28 PM »

Dear diary: re tested battery charge with old regulator fitted but using borrowed stator, results as below.

Bike at rest 12.93 volts
at idle 13.40v
at 2500rpm 13.30v
at 5000rpm 13.50v
at 5000rpm 13.30v with headlight on fullbeam.

Seems the regulator is servicable if not pristine and new but my stator is as I thought pretty much burned out.
I have the loan of the stator for a few weeks so will get the chance to do more tests while I hunt round for another stator or get mine rewound.

Also found while cleaning up battery/solenoid leads that I had put cables on wrong tower bolts, not sure if this makes a difference as wiring diagram doesn't seem to specify.
Solenoid does have directions as to which cables should go where so I must have rebuilt it in the dark.

martino1972 · « **Reply #496 on:** April 19, 2009, 09:52:01 PM »

Quote from: Hush on April 19, 2009, 08:13:28 PM

Solenoid does have directions as to which cables should go where so I must have rebuilt it in the dark.

well,your part of the world is up side down anyway,so it's understandable.......

Hush · « **Reply #497 on:** April 20, 2009, 12:52:05 AM »

Hey my carbs don't flood!!!

The gas actually has to fall down into the main jets as gravity keeps it hovering in the tops of the bowls, Hell I sometimes have to do barrel rolls inside tunnels just to get some acceleration!

MickeyX · « **Reply #498 on:** April 20, 2009, 09:38:06 PM »

Hush · « **Reply #499 on:** April 22, 2009, 01:47:27 AM »

Dear diary: weather crap and no new parts to play with

so leaving bike on trickle charge until I can ride again.
Wishlist growing: Rear shocks, front fork seals, swing arm bushes, rewound stator, time to reg/WOF as well.
Yiikkees $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

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Author Topic: Police CB650PZ (Read 109912 times)