Speaking of the chain. Be careful to leave some slack in it (about 1.5 inches) if it is too taught it can mess up the counter shaft bearing. Too loose and it will slap the swing arm and feel clunky. Sent via BlackBerry by AT&T
-----Original Message----- From: Javier Garcia <[email protected]> Sender: [email protected] Date: Sun, 27 Mar 2011 19:44:36 To: <[email protected]> Reply-To: [email protected] Subject: Re: [Nighthawk Lovers] Re: Hi! '92 CB750: Rattle on warm engine, Low-RPM, Low MPH Lie, those are good news. Don't feel ashame for not knowing the answer for your problem, that is one of the reasons this group exist. One more thing, did you check the tension of your chain? too tie, or too much slack can also make it sound weird. Javier. On Sun, Mar 27, 2011 at 7:01 PM, Kismet World Wide < [email protected]> wrote: > At the risk of revealing myself as a total noob, I wanted to thank > Dave for pointing me towards the chain lube solution, my low RPM, low > MPH noise is gone! > > I got a grime brush and spent a good long while with some Motorex > Chain Clean / Degreaser and scrubbed and scrubbed and scrubbed. Went > for a quick loop to warm the chain back up, put on a good coat of PJ1 > Blue Label chain lube and let her sit overnight. > > [Side Question: At the risk of another oil flame war, anyone have > suggestions for cheaper but equally effective chain cleaner and lube? > I've read dozens of articles on this and it seems that it's all mostly > personal preference, but I'm curious to hear specifically what other > Nighthawk owners use regularly...] > > Have done another couple hundred miles with no noise!!! Yey! > > Guess the chain just needed a good cleaning an I wasn't experienced > enough to identify the source of the noise. A skill I'm working on > learning. > > Thanks so much to everyone who wrote -- I've learned so much from this > group in the last couple weeks. > > Peace, > +Lie > > On Mar 20, 5:31 pm, Druk <[email protected]> wrote: > > I don't know how bad it is, but I had a small rattle that over time > > became an actual banging I could feel, but only at low speeds. I > > tightened the chain, but it didn't help all that much. I put the bike > > on the centerstand (a must-have add on) and saw that the chain was > > binding at a certain spot. Lubed the chain, problem gone! I originally > > thought it was something really major- it eventually shook the bike > > quite a bit- but turned out to be no big deal. I find the chain needs > > to be lubed every 300 or so miles. > > > > Dave > > > > On Mar 19, 8:32 pm, Lie Njie <[email protected]> > > wrote: > > > > > > > > > > > > > > > > > Hi, > > > > > I'm new this list and have been really enjoying it! It's quickly > becoming my > > > favourite email of the day. Thank you all for what you send out! > > > > > I just got my first real (>50cc) bike, a '92 CB750, and it's been > incredible. > > > I'm just learning about the mechanical side of things, and did my first > > > oil&filter change last week. I'm hoping to be able to use the bike as > much as a > > > mechanical learning tool as it is my primary form of transport. I'm > hoping to > > > get back overseas sometime in the next year or so, and when I do will > probably > > > get a bike and do most of the maintenance myself. Figured this is the > best way > > > to jump into things. > > > > > She had 68K miles when I brought her home, but was well maintained: 65K > of those > > > miles was a single owner who is a mechanic, and the last few K were by > the > > > second owner (also a mechanic) over a year or two. Been in a garage > until I > > > bought her (I have none, but I keep her covered so that's at least > something.) > > > > > I've managed to put about 1000 miles on her in the last few weeks here > in the > > > rainy northern california coast. Cold riding, but because of the > weather I've > > > been solo on US 1 for long stretches, which have been stunningly > beautiful and > > > great to safely learn turning skills on. Engine is happiest between > 3500 and > > > 5500 RPM, and definitely takes a while to warm up. > > > > > Recently, I've started to hear a rattle at low RPMs(1500-3000) and low > speeds > > > (under 25MPH) in first and second gears after she warms up. Looking > online it > > > sounds like it might be the Cam chain control tensioner, which I didn't > know > > > existed as a thing before I started trying to figure out how to fix the > rattle. > > > > > First off, anyone know if this might be something other the cam chain > control > > > tensioner? > > > > > If this is, I'm curious if I should: > > > (1) try to adjust the one I have (I've got the Clymer book) and see > if that > > > fixes things -- if so, any advice on how to best do this would be > greatly > > > appreciated. > > > > > (2) figure with the miles she's got on her, I should just get a new > one and > > > just replace it (online prices look like it'll be $150 or so). Any > suggestions > > > on where I should buy the replacement parts? > > > > > (3) assume I'm going to make things worse and instead should just > take it to > > > a mechanic. I'm guessing that'll be maybe $250+, which I'm not psyched > about, > > > but I also don't want to do thousands in damage if this is something I > should > > > wait until I've had a bit more experience with to attempt. > > > > > Thanks so much in advance for any advice you might be able to offer. > > > > > Peace, > > > +Lie > > -- > 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. > > -- 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. -- 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.
