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Messages - saxby

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1
CB500/550 / difrent coils?
« on: March 29, 2009, 11:58:43 AM »
i think my coils are gone on my cb550f
 its not firing on no4.. then after a bit of messing it works!
 but not on 3 .
after fixing that, it stops on 4 again . i have changed the plug caps .but with no luck
i think the coil leads are nackered. and that means replaceing the coils.
apart from  some outhere cb550f coils . are they any outheres that will work well ? or better
 the way they mount to the bike doesnt matter as i have these ones on a box behind the forks  justas long as the leeds arnt two short

aftre this i still have to ballance the carbs and sort out the timeing . im not shore what im doing there either .  one step at a time thow

2
CB500/550 / Re: cb550 1983 nighthawk exhaust on a cb550 1977. any probllems ?
« on: April 30, 2008, 09:14:44 PM »
doch ??

3
CB500/550 / cb550 1983 nighthawk exhaust on a cb550 1977. any probllems ?
« on: April 28, 2008, 10:59:59 PM »
does any one know of any problems putting a cb550 nighthawk exhauset on a earler model ? [a cb550 1977]

the rear mounting bracket isnt an issue if it doesnt match up but the down pipes sizes and the way it fits to the engine . are they the same ?. any help please let me ??? know .

4
CB500/550 / rev counter / speedo Ratios
« on: March 15, 2008, 10:54:00 AM »
any one know what the Ratio is for the rev counter / speedo ?
is it going to matter massivly and low speeds [under 60mph]

5
CB500/550 / 4 in to 2 down pipes any one ?
« on: March 14, 2008, 11:39:02 AM »
does any one have any 4 into 2 down pipes that will fit a cb550 . the condishon doesnt matter two mutch

my idea is to  extend the downpipes to the back of the bike making 4 exhausts at the rear ... does any one know what kind of performance loss would happen with this stile of exhaust ?

6
CB500/550 / Re: cb550f petrol tank
« on: March 12, 2008, 10:28:02 PM »
any problem can be fixed . depending on how much money you want to throw at it .`
 your tank can be repaired .. i forget the name but there is a chemical kit you can buy its about 80 quid that works a treat [haven't used it but hared some good reports].
you can mess around using a battery charger and soda Cristal's to reverse the process.  i did this  and it didnt get bad results [i still use a fuel filter thow]  let me know and i will add links to this method as thats all on a different pc when i learnt to do it
or you could seel it using Kreem

if your looking to bring it back to life 100% as it was, then i would advise spending a bit of time over the next few weeks on ebay  . i know its a case of looking at 2nd hand bits that might be worse off then yours .. but  if you check out ebay in usa  there is a lot more choice and also bear in mind that the climate can be a lot more kinder to bikes. postage is high but you get a good exchange rate at the moment .

i have some near mint extended forks coming over for 70 quid inc p+p its worth a look

i would fit it up and live wit it .  no one looks in the tank so as long as you cleen it up or seel it up  well you know it should be ok.  to be double shoure put a inline fuel filter in so you have pice of mind +you can see if there is any rust or cr*p ending up in the fuel before it goes in the carbs
you will be fine

but if you want an original  replacement + paint job to boot
it will set you back a bit of time and money

7
CB500/550 / Re: spark plug screwed up / problem
« on: March 11, 2008, 06:55:20 PM »
 thought about it over night . and i had anouthere go at trying to re bore the threads the right way.
as long as i didnt lock the spark plug in there  i had nothing to louse as  the outhere 2 options were to get a new head or  send it away ..
after takeing my time back and forth using oil and  cleaning the plug and the hole up i have it all the way in and squire . my onley woury is that the  tiney aloy bits in there might do some damage . im hopeing that when i fire it up they will just get spat out  and not damage any thing . what do you think.?

8
CB500/550 / Re: spark plug screwed up / problem
« on: March 11, 2008, 12:44:03 AM »
Quote from: SteveD CB500F on March 09, 2008, 04:00:12 PM
If the spark plug has been x-threaded, there's no alternative to a helicoil I'm afraid. The internal pressure will blow out any bodged fitting (and you may be correct about swarf in the cylinder).

So, head off I'm afraid.

You can try a used one but how can you be sure that what you're getting is going to be any good?

Best bet is a local breaker or someone on here who has a spare head.

GeoffT in the Orkneys was looking for a 550 head recently. I have a complete 550 engine but shipping it up there would be prohibitive.

seen one on ebay item no    110231895640
 says it needs work but will cost 20 inc shiping
dont realy know about this sort of thing ..
dont know what a helicoil is . im guesing that i will need to take it in some were ..

as for your engine . i live in cardiff at the moment . but do trips back home to hull and manchester a lot . the bike is never going to be a show winner and has been altered in a lot of ways  so i am looking at the cheapest option ..

9
CB500/550 / 1977 front brake... any good ?
« on: March 09, 2008, 03:31:40 PM »
the frount brake was seased when i got the bike  [was all in boxes mostley] but now have it working . 2 questions

1: is a single piston brake made back in 1977 any good? to toady's standards / should i be looking at  using a more modern twin piston system, and make a bracket out of alloy fit  the unit to  the forks . thinking about using maybe a gs500 st up or a ntv650

2: if i use what i have [it seams easier] how does the brake light switch work .. by manual doesn't say a lot about it . i dont have any leads or what looks like a switch coming out of the master cylinder.  i have no idea how it used to work back then ..
is its easier i could use a master cylinder off a newer bike . but would need some ideas on master cylinders  eg the  master cylinder of my ntv650 might be designed to push more brake fluid then the cb550 one as its set to move a twin piston type ./ might brake the seals maybe in the brake piston  ?

10
CB500/550 / spark plug screwed up / problem
« on: March 09, 2008, 03:17:39 PM »
have had the bike running on all 4 cylinders after  i got it . but  no on the re build i can see a problem ...
the spark plug in the first cylinder is in at a slight angle and not screwed in all the way .. i take it out and can see its been put in at a fu**ed up angle . and has crossed the threads . it was only in about 25% of the threading on the spark plug .. i have  tryed to screw it back in on what looks straight tightening up a half turn and a quarter back trying to bore back on the original threads .its as tight as i dare go. but only in about 60% - 70% still .. and my worry is that small alloy filings are now siting in the cylinder  ...
any ideas ?

*should i just keep an eye out on ebay for a top end ,and do a top end re build?

* or just fire it up and ignore it

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