Topic: Wheel Woble question

[Nortstudio]

1976 CB550k

I recently rebuilt a wheel I had purchased used - a package with everything including rim, hub and spokes.

I took the whole thing apart, and replaced the bearings, cleaned up te spokes etc. When I trued the wheel, I got it true to well within honda spec. Today I took it to a place to have them speed balance it with the new tire on it, and the sprocket installed.

The high speed balancer showed a slight "wobble.". It definitely wasn't noticeable to the ey when on the truing stand or with the dial indicator. The mechanic said he had "seen much worse" and put a couple weights on it, and sent me on my way. Said that the issue wouldn't effect riding until hitting approximately 125mph.

Is this something to be very worried about? Of course I was hoping for perfect, but maybe that's unrealistic with a used 35 year old rim???

Thanks.

[Stev-o]

Did you use a dial indicator when trueing the rim?
If it's within specs, I'd go with it, hard to get 'em perfect.

Oh, and he gave you good advice, keep it under 125 mph! Especially in Brooklyn!! HA!!!

[Nortstudio]

I used a dial indicator and got it less than 1/2 of the Honda prescribed allowance. So I figured it was cool, but then the high speed test freaked me out.

The mechanic was very blasé about it, but I trust you all more than I do him!

[MCRider]

If its a steel rim, they often have a blip at the weld, which no amount of truing can remove. Likely you're fine.

[Nortstudio]

I'm sorta curious to have the one currently on the bike checked out, just to see what I've been dealing with.

In this instance, I'm hoping curiosity will SAVE the cat...

[tlbranth]

What MC said. There's a good sized blip at the weld. OEM rims aren't all that close to perfect. Don't worry about it. Worry about the #$%* in the car 3 feet behind you.

[Danno]

the variance or wobble is caused by two things as they said the weld on the rim it is neither perfectly round in that area nor is it consistent with the rest of the rim on weight and unless you have high quality D rated tires (high speed ) the tires themselves are not perfect the closest i have gotten with tires are the D404 120/90 that I run on the back of my 74 cb550 it requires no weight at all and comes with a dot where to put the valve stem in orientation to the tire 
My spitfires required 3/4 of an ounce and they are good tires too
the best time to true a rim is just before you get tires If you do it after the tire seats in you will be unhappy till the next tire change

[Danno]

to answer your question the slight bit of wobble he saw on the machine would not harm you and would probably not even be noticed at 125mph since the only thing going through your mind will be will I live through this and will the bike
 to my knowledge the 76 cb550k will only go 105 mph the only one of the cb550's that was capable of 125mph was the 74 and I can assure you I have the same rim and have never noticed any problem at that speed but then  again I have only gone that fast once on my beloved 550 and would not advise anyone abusing their antique this way when I did it the bike was not that old yet and only had 4000 miles on it

[Nortstudio]

Thanks Danno.  I trued the rim before the tire was on it, and got good results.  I'm not sure my Dunop 70 is set up with the dot on the valve stem, I just put it on when I was ready for it.

There is no way my bike hits 125mph, nor would I do it if it could.  So I'm ok on that front

Appreciate the help.