Topic: Triple tree help

[Desert-SOHC]

I'm on a mission to get the "buzz" out of the handlebars on Mayble and have a few questions.

Will an early CB450 bushed riser top triple work on a 78K?  I've done a search and cant really find the answer on a 78.  I've found that it should work with a 76 and under but don't know if other than the dash differences of the later models are the 750 top triples all the same dimensionally?

[Don R]

 An F has a different offset I suspect the late K does also, You might need to swap top and bottom triples. I've never had a sohc750 4 buzz my hands, I wonder what's causing it?

[rickmoore24]

Bar ends will help. It's weird though, never had that happen but I've not ridden all the CB750's in the world so.. 

[Desert-SOHC]

It's more about calming down the mirrors above 5K there almost useless, but then there not the stockers either, and since I'm a chopper guy I will be going with apes or something similar in the future.

[rickmoore24]

If the mirrors are flimsy, then that might be the issue.

[Desert-SOHC]

Bar ends still apply.

Another option, if your wiring is external to the bar, spray the bars internally with minimal expanding foam. It makes a huge difference.

never thought of that............thanks

[Desert-SOHC]

If the mirrors are flimsy, then that might be the issue.

maybe....they weren't much cash.

[Desert-SOHC]

So know one?

[scottly]

Will an early CB450 bushed riser top triple work on a 78K?  I've done a search and cant really find the answer on a 78.  I've found that it should work with a 76 and under but don't know if other than the dash differences of the later models are the 750 top triples all the same dimensionally?

The K7/K8 triples have 10mm less offset than the earlier K's. Like Don suggested, you might consider swapping on an earlier K lower triple so you can use the 450 upper.

[oldhatt45]

Desert-SOHC,

I'm trying to figure out why you have the Buzz?
It would occur to me that any Buzz would be because something isn't right either with the engine or the engine mounting that is coming through the frame.
Is it possible that the engine mounting bolts are not tight to spec? 
Or possibly a timing issue?  Or maybe cam chain tensioner?

Just throwing a few things out there that might be the root cause of the problem.
I'm probably all wet, but then I've been a Left field thinker most of my life.  LOL

Charlie

[somesuch]

Will an early CB450 bushed riser top triple work on a 78K?  I've done a search and cant really find the answer on a 78.  I've found that it should work with a 76 and under but don't know if other than the dash differences of the later models are the 750 top triples all the same dimensionally?

The K7/K8 triples have 10mm less offset than the earlier K's. Like Don suggested, you might consider swapping on an earlier K lower triple so you can use the 450 upper.

Later k bikes do have less offset.
I wonder what 10mm does to trail...later k must have less rake to make up for that. It probably would make the early k to heavy steering, and you would also be hitting the tank with the forks/ears

[Desert-SOHC]

Thanks for the info, I will check into it farther.

Oldhatt...it's nothing that's a problem and maybe I'm just to used to HD's.  With the isolation bushing risers the bars and mirrors are smooth as ice...no vibration what so ever and the mirrors are always crystal clear.  But then all my HD's have been FL's and heavy weight touring machines...that's the direction I'm going with my SOHC.  It will be a custom highway flyer cause that's the type of riding I do and I want it as fatigue free as possible for the 500+ miles a day that I like to do.