Funny Sound - Need some Help Identifying

[Lucky 1]

I feel the same way about safety .
I am old also.
One more mistake might be the last mistake.
You don't just get up and dust yourself off.

'Sounds like you are smart.

[Lucky 1]

You need to measure the slack in the chain with the bike sitting on its wheels and the rider on the bike.
You need about 3/4 inch.

[Cabreco]

Lucky 1 wrote

You don't just get up and dust yourself off.

The dust is the only thing holding me together <lol>

Lucky 1 wrote

You need to measure the slack in the chain with the bike sitting on its wheels and the rider on the bike.
You need about 3/4 inch.

Fortunately, my wife & my son (together) weigh the same as I do.
I guess I'll put their butts to good use!

[Cabreco]

Ok I got my spoke wrench so I can tighten spokes & true the wheel.

Is there a procedure for tightening the spokes.

On some bikes it's every other on some it's every 3rd one going around the wheel 3 times.
What's it for the 81 750K?

[TOOLS1]

I set up a piece of wire as a pointer close to the wheel. That way I can see the run out of the wheel. I then just start working on the bad spots. The ones that come from the outside of the hub will pull the wheel side to side. The ones coming from the inside of the hub will pull the wheel up, or down. Also I tighten them until I get a nice ping when I hit them with the wrench. That's all I know.
TOOLS

[Piute]

                          Any N every-one should spoke N true A wheel at least 1s
                                            lil help is always helpful
                                                    good luck ?
                              http://www.youtube.com/watch?v=F1_AdHG7fGY

[Cabreco]

Cabreco wrote

Would anybody know what size spoke wrench I would need for the 81 750K?

Ok just in case anyone else needs to know... the spokes on a DOHC K is 6mm

Lucky 1 wrote

Loose spokes? I would not ride it period.

Loose was an understatement. When I said loose I was referring to the spokes that would actually move in the hub, now the ones that sounded like hitting wood was a different story. Out of the 40 (I think) total spokes on the rear wheel, only  2 had that nice melodic tone when you thumped it. The rest were either loose or REALLY loose.

Piute wrote

Any N every-one should spoke N true A wheel at least 1s lil help is always helpful good luck ?
                              http://www.youtube.com/watch?v=F1_AdHG7fGY

Piute, great video. It helped a lot!!

So I trued the wheel using the method in the video & took it for a ride. I was STILL getting that wom wom sound when coasting, so I decided that it has to be the chain or sprockets (or both). I did a physical exam of them and they look new. The chain is still on the NEW markers as well. I figured I would clean them 1st.

cdaiscool wrote

My FSM calls for cleaning the O-ring chain with Kerosene. So regular kerosene is fine.

My chain was lumping together the same way, so I cleaned it with kerosene and a brass brush - the brush was entirely ruined, but the chain was cleaned. I then put some Dupont Chain Saver on the chain, which is made for o-ring chains. Got it from Lowe's.

Haven't ridden yet though. But that is definitely one way to go about it.

BINGO! I have no ideal what the PO used for lubricant (I suspect lithium was used at one point) The chain looked black, old & rusty before I hit it with kerosene. Go figure...it's silver.



I use the brass brush (yes I trashed it too) but the chain & sprockets look great. I also bought the Dupont chain saver (I couldn't find it in spray so I bought the liquid) I oiled up the chain & let it dry for 30 minutes.

1st thing I noticed was the slack remained constant (no more loose then tight issue) & was MUCH quieter. I took it for a quick ride and PROBLEM SOLVED!

No more noise, no more chain rattle.

Thanks again guys for helping me keep my sanity!

[LukeM]

Many hands make much work light, and many minds make mysteries disappear.
Nicely done, all hands.  And we have a happy rider again.  I love this job!

Did I mention I had a nice 80-90 mile bike trip on Saturday?  The object was to run all the old gas out of my tank.  Did that...and then some.  Another 70 miles after I filled it back up.

Guess I overdid it, eh?  It was a good day and a good run.  That may be the furthest I've ridden the Avenger. Can't wait to do it again.

Luke M

[cdaiscool]

If the previous owner used lithium, I'm glad you saved this bike from them. That's such an idiotic thing to use! Lithium attacts dirt/grease/grime.

I'm glad you got it resolved!

[Piute]

                                                           

              My chain next ,cleaned it good already but havn't road or put anything on it,
                          the idea was to soke it but has no master link

[cdaiscool]

A brass brush, and a bowl of kerosene REALLY does wonders for a chain. It's rather amazing.