I for one am not trying to back anyone into a corner, but I have some honest questions, and if it doesn't hurt would like to have some answers so I can learn. I appreciate Dennis Hammerl vast product knowledge and helpful contributions. But something just seems wrong with .0011 Dia. jets, .011 is eleven thousandths and that doesn't jibe with .0011... I would never wrap piano wire around anyones neck, not even yours... LOL.
--- On Sun, 5/31/09, jjrobert <[email protected]> wrote: From: jjrobert <[email protected]> Subject: [Nighthawk Lovers] Re: 700SC carbs question To: "Nighthawk Motorcycle Lovers!" <[email protected]> Date: Sunday, May 31, 2009, 5:36 AM Folks...don't back him into a corner...there are other uses for piano wire, after all :-) On May 30, 11:51 pm, Dennis Hammerl <[email protected]> wrote: > Have you ever seen a factory shop manual ? Just wondering. They must be wrong > on all those specs. My piano guy has two smaller sizes than what I use. I > guess he's wrong too. > > --- On Sat, 5/30/09, Mark Hasslinger <[email protected]> wrote: > > From: Mark Hasslinger <[email protected]> > Subject: [Nighthawk Lovers] Re: 700SC carbs question > To: [email protected] > Date: Saturday, May 30, 2009, 8:49 PM > > also the standard tolerance on pin gages is 0002" (that's two tenths of an > inch) the tolerance can be applied on the plus side or the minus side. > > An eleven thousandths diameter pin gage on the plus tolerance would be from > .0110" to.0112" or a maximun size of eleven thousandths and two tenths. > > An eleven thousandths diameter pin gage on the minus tolerance would be > from.0110" to .0108" or a minimum size of ten-thousandths and eight tenths. > > music wire tolerance are another story but this should clear up the confusion. > > --- On Fri, 5/29/09, Dennis Hammerl <[email protected]> wrote: > > From: Dennis Hammerl <[email protected]> > Subject: [Nighthawk Lovers] Re: 700SC carbs question > To: [email protected] > Date: Friday, May 29, 2009, 9:12 PM > > The actuall size of the hole in a slow jet (#38) is .0011" That's eleven ten > thousands of an inch. No typo. > > --- On Fri, 5/29/09, Mark Hasslinger <[email protected]> wrote: > > From: Mark Hasslinger <[email protected]> > Subject: [Nighthawk Lovers] Re: 700SC carbs question > To: [email protected] > Date: Friday, May 29, 2009, 9:32 AM > > That's .011 wire. > > "a .0011 wire" would not allow gas to pass. > > Is this a typo or are you really mistakenly looking for this wire in a set > wire? If you have a wire set look again,maybe. > > --- On Fri, 5/29/09, Dennis <[email protected]> wrote: > > From: Dennis <[email protected]> > Subject: [Nighthawk Lovers] Re: 700SC carbs question > To: [email protected] > Date: Friday, May 29, 2009, 1:18 AM > > I didn't pass a .0011 wire through the slow jets - didn't have one. > > Recall, this problem came on rather suddenly; one day it was running the way > it had for a year and the next I wondered if I would be able to make it home > because is had so little power. I'm not sure if that's significant but it > seems like it should eliminate some things. > > When it runs, there's no popping of backfiring and anything. It's regular - > just very weak. I'll open the screws on each float-bowl and confirm there's > have fuel tomorrow. > > Dennis > - Seattle > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Dennis Hammerl > Sent: 28 May, 2009 21:29 > To: [email protected] > Subject: [Nighthawk Lovers] Re: 700SC carbs question > > That's scary stuff... flash point is too low. You could be hurt. > After a few minutes of run time, shut it of and open those screws a bit (the > one you sent a picture of) and see if fuel runs out. this way we insure that > each bowl is filling. I'm assuming that you passed the .0011 wire through > each slow jet ? I'm starting with some basic stuff here. Does this pop or > anything? just sounds flat ? > > --- On Thu, 5/28/09, Dennis <[email protected]> wrote: > > From: Dennis <[email protected]> > Subject: [Nighthawk Lovers] Re: 700SC carbs question > To: [email protected] > Date: Thursday, May 28, 2009, 11:51 PM > > Dennis, > > It is very flat seeming when it runs. I haven't run it long enough to let > it fully warm up. But, during the time I have run it, I use about half choke > and a bit of throttle to keep it running or else the RPMs drop so low it > stops. When I've got it going and I give it throttle, it comes up slowly > and with little enthuiasm. I've run it up to about 3500 and it sounds > pretty different than it would if it were run up to 3500 when it is running > right. > > I have some spray starter fluid - would that do? > > Dennis > - Seattle > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Dennis Hammerl > Sent: 28 May, 2009 20:39 > To: [email protected] > Subject: [Nighthawk Lovers] Re: 700SC carbs question > > Your plugs are indicating a lean condition.(ideal is somewhat brown) Not > unexpected given being loose. Loose plugs do not transfer heat as they > should. Effectively rendering them about one heat range more than they should > be. It would appear that they all were firing. However, I will wait to see > what you have to say about that. A 700s running on two out of four would be a > very flat sounding, poor running thing. Do you have a spray carb cleaner ? > Idle the motor and push the boots aside a tiny bit and spray a bit into each > carb throat and observe the reaction. If it picks up or garfs a bit. > > --- On Thu, 5/28/09, Dennis <[email protected]> wrote: > > From: Dennis <[email protected]> > Subject: [Nighthawk Lovers] Re: 700SC carbs question > To: [email protected] > Date: Thursday, May 28, 2009, 11:17 PM > > Dennis, > > Thanks as always for sharing your advice. Tommorrow, I'll see which plug > wires are sparking. > > I did use the strong light method of evaluating the butterfly valves and the > one I adjusted was a better match when I was finished. > > I wondered if taking the cables off at the grips was the right thing to do to > gain extra length. I didn't do it that way and it was a very tight business > to do it the other way but, ultimately, it worked. Next time, I'll take the > cables loose on the other end and make things easier. > > I just walked out and had another look and now I see where to connect the > manometers. Does make a lot more sense than trying to connect them to the > bottom of the float-bowls, eh <smile>? > Dennis > - Seattle > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of [email protected] > Sent: 28 May, 2009 19:53 > To: [email protected] > Subject: [Nighthawk Lovers] Re: 700SC carbs question > > The OEM exhaust is a balanced affair. So dismiss any thought of a diagnosis > in that fashion. Please do check for spark at all plugs before we go tearing > into anything else. When you have determined that, get back to me. The > procedure to check out an ignition issue on a system like that is something > that will take time to write out. Only if I have to. > > The vacuum take-off point is at the screws on the intakes. Same place as the > vacuum take-off that is used for the petcock. The hoses are plugged into > adapters on one, three and four, the petcock take-off on two. Understand ? > You have to remove the screws and thread in adapters. > > Did you use a strong light to determine that a throttle plate needed to be > moved ? > > Graham, the "pressed in jet" is not to be removed. There are only two. > Remember to clear the slow speed jets with the .0011" wire. > > As far as R&R of the carb pack, it is best to start at the grip > and remove the cables to insure enough slack at the carbs. The air box can > be slid back quite far to allow space, just takes some effort. Liquid soap, > WD-40, or silicone spray makes for a much easier time popping the boots and > intakes off and on. Kyle takes the bolts out and pulls the intake manifolds > out with the pack. I have no problem with that method. > > --- On Thu, 5/28/09, Graham Rogers <[email protected]> wrote: > > From: Graham Rogers <[email protected]> > Subject: [Nighthawk Lovers] Re: 700SC carbs question > To: [email protected] > Date: Thursday, May 28, 2009, 10:17 PM > > I haven't put the carbs back on my 700SC yet - I'm afraid to! I put the > carbs back on my CB750F and it ran like before! Graham > > On May 28, 2009, at 9:28 PM, Dennis wrote: > > Well, I finished putting my 700SC back together today and started it up - and > it ran just as before. It feels like I have two cylinders firing and two > not - but that's a guess - I haven't watched the spark plugs spark to prove > it. I have the stock dual exhaust and it seems to me like both mufflers feel > the same. So for either muffler, one cylinder's hitting and one's missing. > Does that make sense? > Dennis, I'm keen to focus now on the coils if you still think that's the most > likly target to investigate, Can you tell me your thoughts again about how > to test them out? I had a look at them today but I didn't see anything > obvious like broken or shorted wires. > Cheers! > Dennis Gallagher > - Seattle > - '85 & '86 CB700SC --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en -~----------~----~----~----~------~----~------~--~---
