Re: Funny Sound - Need some Help Identifying

Posted by Cabreco on Apr 09, 2012; 5:06pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Funny-Sound-Need-some-Help-Identifying-tp3868207p3897418.html

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!