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Author Topic: Upgrade: '92 Nighthawk 750  (Read 2810 times)
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injuredcyclist Topic starter
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Bike: 1983 CB550SC, 1992 CB750
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« on: June 11, 2011, 12:10:58 PM »

Hi,

After a week of riding my recently revived 550, I decided it was time to move on.  My commute each day is about 12 miles each way.  I quickly discovered that the 550 felt too small for me.  I love how much power it has, but I found myself a bit crunched, sitting with a curved spine, and had a hard time staying where I wanted to on the saddle.

I paid $2k last night for a 1992 750, with 32k miles on it.  The bike fits like a glove, and seems to handle better than my 550.  All the signals/lights work, the tires match and have plenty of tread, and the brakes are in great condition.  Nice bonus on this bike is the center stand.  Three previous owners, all of whom apparently kept it in the garage and babied it.  The guy I bought it from only rode during the summer and had decided to move on to something sportier (a couple year old Suzuki SV650s).  From what I was told its never been laid down and there's no serious cosmetic issues: both side panels (didn't know they were hinged on the 750), only minor bits of rust, tank is in pretty good condition, no dents, no tears in the seat.  The only thing that ever went wrong with it with the PO was a broken clutch cable.

I'll be adding saddle bags almost immediately, and a wind screen before the summer is over.  Know of anything in either category that you like/fits the 750 well?  Think it'll be soft bags initially because of cost.

I'm picking up a shop manual today, and start going over the bike. Need to change the oil, new filter, new plugs (and probably plug wires).  I'll also have to read up on how to check and maintain a chain, since I haven't done it before.  Anything else you guys would do/check on a bike you just bought?  Unlike with the 550, I'd like to do as much as I can on my own before paying crazy amounts of money for labor.  I got compliments from three people in two hours of ownership last night, and I'm determined to keep the bike in great shape.


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20 miles in a half ton truck reminded me how much I love my bike.
ariwhiteboy
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« Reply #1 on: June 11, 2011, 12:53:43 PM »

Makes me miss my black '92.  Sad

Great find! Take care of it and ride safe.  thumb
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NightHawked
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« Reply #2 on: June 11, 2011, 01:00:29 PM »

Nice lookin bike, always liked the black for some reason. If I didn't already, I would check

tires and brakes. So are you keeping the 550 for short runs?
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« Reply #3 on: June 11, 2011, 01:44:33 PM »

Congrats on the new bike.

Are you still planning on restoring the 550?
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hspratt3
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« Reply #4 on: June 11, 2011, 03:37:56 PM »

Sweet. Looks just like mine when I picked her up.
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injuredcyclist Topic starter
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« Reply #5 on: June 11, 2011, 06:36:39 PM »

Are you still planning on restoring the 550?

Was thinking about it before, not sure now.  Took the 550 out to get a couple things and enjoy one of the most beautiful days of the year so far in Portland.  Got about 7 miles before it started acting like it was out of gas.  Currently thinking its not getting fuel, which could just mean the petcock and filter are fouled with the sand I used to try and clean the tank.  If its as simple as that, I might very well keep working on it.  Otherwise, my credit card balance could use a cash infusion, and bikes are selling for crazy amounts right now.
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20 miles in a half ton truck reminded me how much I love my bike.
Hawkens
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« Reply #6 on: June 11, 2011, 07:10:54 PM »

She is a beauty and she has the factory exhaust and a center stand for 2k, I am jealous.
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creaky
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« Reply #7 on: June 11, 2011, 07:55:29 PM »

Very nice looking bike! I have had a set of these Cortech bags and tailbag on my NH for 3 years now, only in black. They are holding up extremely well and fit in with the lines of the bike, I'd buy them again.


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« Reply #8 on: June 11, 2011, 08:11:32 PM »

Nice find.

Regarding windscreen, I've tried the Slipstreamer Spitfire and the National Street Cycle EX.  The N/S is a much better product, but cost a little more.  Noteworthy is that the N/S has 4 mounting points, and that makes it rock solid at speed.  The S/F shakes a little at higher speeds, but it still effective.

You might also shop crash bars on Ebay.  In addition to protecting your motor in a fall, they also make great mounting points for highway pegs.

Per the manual, chain slack when cold on the center stand should be between 3/4" and 1 1/4" at the midpoint between the sprockets.  Personally, I prefer the loose end, as I do not find it makes more noise and it ensures the least amount of stress on the chain during suspension compression.  There are several good chain lubes out there, but I use the Belray product cause, when applied correctly, it will not spatter the rear wheel.  Clean your chain when it is hot (just after a ride), then lube immediately, then let it sit for a couple of hours.

Looking forward, the progressive suspension (rear shocks and fork springs) make a world of difference in the bikes handling.

Hope you enjoy your 750.
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« Reply #9 on: June 11, 2011, 10:16:32 PM »

Congrats on the sweet new ride!

National Cycle Streetshield EX is a nice match, loved mine.  I plan on getting another for my second NH.

Great cheap chain lube: http://www.webbikeworld.com/t2/motorcycle-chain-lube/dupont-teflon-chain-lube.htm
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Andiiboi
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« Reply #10 on: June 12, 2011, 12:51:36 AM »

Definitely +1 on the engine guards, they might save you a lot of trouble - ask me how I know  banghead

I'd check the brake fluid, good chance it should be changed.  Of course, you could probably get away with not changing it as long as it isn't low, but that's lazy (like me).  Your plug wires probably don't have to be changed unless there is a compelling reason to (obvious damage); the ones on my 93 still work fine.

Here's a page about chains:
http://www.quality-cycle.com/truth_about_motorcycle_chains.htm

I have the same chain lube Soupskin mentioned, although I sometimes just use whatever spray lube I have on hand (I'm not recommending you do this).  When your chain needs to be replaced, check up on the sprockets, too.  They're supposed to be replaced every other chain replacement.  You could also change the number of sprocket teeth number to fit your riding needs better.  You know how to tighten the chain, right?

Oh, lubing the cables is a good idea.  They might be fine anyway, but they might rust in some cases.  Ask me how I know this one too.

Enjoy that bike, it's a really nice ride.  My only complaint is the small gas tank, but that's cuz I'm lazy and dislike pumping.  There are plenty of upgrades/mods you can do, just like most bikes, but after riding for a while, consider the washer mod, and maybe a K&N filter (mine came with one, so I don't know how it would compare to paper).  Oh, shell out for engine guards.
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93 750 - I'll revive it soon
aggie2011ngl
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« Reply #11 on: June 19, 2011, 10:00:32 PM »

My only complaint is the small gas tank, but that's cuz I'm lazy and dislike pumping.

Are there aftermarket tanks available for the later 750's?
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geaux
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« Reply #12 on: June 20, 2011, 03:57:35 PM »

I have a 91 that looks pretty good except the plastic seems less smooth and glossy as it should be. Trying to decide if I like the silver engine we have or the black out on newer models. I think I will like more what I have :)
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