92 cb750 NightHawk suspension question...

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Bored · #1 Unread post by **Bored** » Thu May 31, 2007 2:49 pm

Does anyone have any experience with the above mentioned bike? I got it on a trade and though it is a great looking bike and is strangely quick and sounds great, the suspension all around is horrible.
The bike nose dives at all speeds because the forks are soft and the rear is unresponsive.
I tried replacing the fork oil and that didn't help much. I also priced out the springs at bike bandit and though the fronts are resonable, $79.00, the rear sets are upwards of $300.00.
Theoreticly I have about $700.00 invested in the bike (total cost of trade) so I am not sure It is worth the investment. I could just sell the bike, I have others that are fine but I am attracted to the overall style and curves.
I am also ready to throw a heavy coat of silver flake on it just to highlight those curves, The black is mint and nice to look at but so common. I like to be different! And I always wanted a silver bike, laugh all you want but I was hooked when I saw Fonzi's bike as a kid! I thought that was the coolest bike ever (at that time) and it was there that I decided that I was gonna be a biker! (ok so I still think fonzi's bike was cool, I would trade the nighthawk for it!) Any takers???

slimcolo · #2 Unread post by **slimcolo** » Sun Jun 10, 2007 9:07 am

Front end springs-Progressive or RaceTech (better than OEM) brand are besty for older bikes, however you may have a dampening prob. (usually just dissasemble and clean, worst case replace dampeners)
Make sure you have right fluid most modern bikes use 5-10W and many older bikes use up to 40W. (Some also use ATF,industral hydrolic fluid or even motor oil, some improvement can be had switching to modern fork oil of proper weight.) Using heavier weight than OEM may fix prob but is only a temperary fix and could cause damage to dampening system. Spacers can be added to stiffen up action (not recomended but often used for racing and sidecars)

Rear shocks $300 seems a little high for OEM replacement. (after market for Harley start arround $120, Don't know about Honda) Also try junk yard , but make sure no leaks and came from low milage bike. (easier said than done)