Opps - I need a new drive chain!

[OB_badbus]

I admit it - I have been bad! The busa made me do it. My drive chain is really shot! I was on the dyno tonight and the rear wheel was jumping up and down at slower speeds. We idled the bike in 1st gear and saw the chain moving up and down on the rear sprocket. I could also hear a strange sound every time the same spot of the chain went over the front sprocket. Upon further investigation we discovered the chain tension was very tight until we rolled the bike a few feet, then it was at the right tension (about a 3/4" slack movement up and down). We repeated this a couple of times to make sure it was really happening. I think a couple of those hard burnouts (6,000 rpm dumps) on the street screwed up some of links, possibly chinking or binding them somehow.

Anyone experience anything like this!

Any suggestions on which chain I should use to replace the stock chain?

I guess I should replace both sprockets as well.

P.S. – New all time high HP tonight – 158hp, with a 4 to 6 hp increase from 7,500 up compared to my last dyno curve.

 

[OB_jeffw]

Try a DID 530ZVM chain, or a Tsubaki 530 Sigma if you are going to do those 6k rpm dumps.
Do make sure you change both sprockes also. You need to stay with steel, don't switch to alum.

[This message has been edited by jeffw (edited 09 November 1999).]

 

[OB_Cisco San Jose]

JeffW,why do you have to change the sprocket if you are going sigma 530,I thought stock sprockets work with the Sigma?

 

[OB_jeffw]

I guess it depends on how many miles the bike has on it. If it's > 1500 miles, then I would replace them as a set. Under that then it would be a personal decision.

You are correct that the chain will fit the stock sprockets, it's just a habit of mine to change all as a set.

 

[OB_Yngve]

In my humble opinion the stock chain aint worth a s. h. i. t. And dont tell me its because the Busa is so powerful. In fact the Busa is the bike with least HP I have had since 1987 and I have never had any chains this bad.( but this is the first new bike I have ever had so I guess Suzuki is shopping for price when they buy OEM chains. )

 

[OB_badbus]

Thanks ducmanic, that's what I have been waiting for - an opinion from someone who has tried a few different chains! Are you using the sigma now?

P.S. - I'll be flying into Ontario this Wed. for a quick meeting on Thurs. I'll be looking for signs of the feared "L.A. Busa's" in the form of long black burnouts on the pavement!

 

[OB_ducmanic]

The DID wont cut it-I tried one. For real fun i believe the sigma (Tasubaki) is the way to go. Just wire the clip on the Master Link -
ducmanic
Its the second and third gear rolling burnouts that finish the chains -

 

[OB_KawAbuser]

Is the Sigma the non o-ring drag racing chain? I am soon to be in the market for a chain, preferably a o-ring due to long life and ease of service in long trips.

Many of you have used differant chains I am sure you know what works by now on the Busa.

 

[OB_ducmanic]

OK Guy's- Schnitz Racing has the Sigma "O" Ring Chains. This is what i run. The rep at SS told me DID is going to make a chain for the bussa' later this year. I dont need any more marks on my bike from exploding links - Sprocket Specialists is no longer selling parts for the busssa',(Gears or Chains) so it must not be just me -

ducmanic
LA
PS. BadBus, if your coming to LA, E-Mail me-
http://www.netcom.com/~ducmanic/

 

[OB_badbus]

I agree, that's exactly what it sounds like. But this is the first time I noticed it. I have had the bike on the dyno before and there was no bouncing. Maybe I adjusted the chain for where the rear sprocket was in the "loose" position and results in a tugging at the chain when it runs over the tight spot. I'm on my way to the garage now to run the bike on the stand to see if I can detect anything.

 

[Gixx1300R]

The Sigma has 0-rings and the HQR is the tsubaki non 0-ring drag race chain.

 

[OB_badbus]

After close inspection and a bottle of wine, I have come to the following conclusion. The rear sprocket looks perfectly round at the teeth level but about a half inch in it looks like it is about a 1/16 inch out of round. Screw it, new sprockets front and rear with a new Sigma chain.

Now, about that turbo system I have been reading about - what chain will stand up to that kind of abusa!

 

[Guest]

Badbus... You're symptoms sound an little like a out-of-round sprocket. If that's true no chain will be good enough. Definitely check that before going any furthur.

[This message has been edited by Lyle (edited 16 November 1999).]

 

[Guest]

By a half inch in do you mean the bottom of the teeth slots. Or are you being factious and I am taking you seriously.

 

[OB_badbus]

Just got back in from LA, nice weather, but where the hell do you guys ride out there? Now that's traffic!

I mean a 1/2 inch in from the bottom of the teeth.

Nice talking with you Ducmanic - I'll check out your site Monday morning to see how much work you guys got done after dinner.

 

[OB_KawAbuser]

Gixxer1300r, thanks!