Alloy steel and plastic for a change

V

Vince

Hero member
What's your poison re rear sprockets and why. I was surprised at how many went steel on the late ride. I expected the lighter alloy.I last did mine front and rear including the top of the wasa Hyabusa rated $230 530 chain maybe 4 or 5 years ago and yep last Saturday was the send adjustment in that time. No idea how many ks it has done.
 
Here is a guess, once you wear through the hard anodising on the alloy sprokets they go fast. That's if they are hard anodised.
 
I put a plastic rear sprocket on my Kawasaki Z1 many years ago. The bloke in the bike shop had a hard time convincing me that it would be OK. He eventually offered me a money back guarantee if it didn't live up to his claim that it would outlast a steel sprocket. His money was safe. The bloody plastic thing never wore out. It eventually developed a few radial cracks after a many thousands of km of hard use, so I pensioned it off even though the tooth profile was still as good as the day I bought it. I'd buy another one except I've never seen another plastic sprocket in bike shops.
 
I just chewed out a rear ally sprocket in about 6K kays. Have a new one to replace it as well as a new front sprocket, just need to buy a chain then I'll replace all.
Would prefer a steel one but not available in 40 tooth to suit the GSXR carrier, that I'm aware of anyway.
 
Dellortoman said:
I put a plastic rear sprocket on my Kawasaki Z1 many years ago. The bloke in the bike shop had a hard time convincing me that it would be OK. He eventually offered me a money back guarantee if it didn't live up to his claim that it would outlast a steel sprocket. His money was safe. The bloody plastic thing never wore out.
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Me too, but it was on my 79 Jota when  bought it. Here it is mounted to the back wheel.

 

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Tippie said:
I didn't know Stanco had raced a Jota at all. Do you know the story behind that bike? (And it`s plastic sprocket.... to keep within topic!)
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Phil Peacock bought the bike and raced it for a few years, backed by Stanco.
When I bought it of Phil it was back in road form, basically as you see it the picture, including the 7C cams and the plastic sprocket.
AUSBEAN (Phil) is on here somewhere, he can tell you more about the racing side of things.
 
Just changed the alloy sprocket on the back of the SF2. Could have used it with another chain but decided to change the lot.
It had around 30 000km I expect, if not more.

Paul
 
My 3C has some punch, especially when I follow Brett riding instructions. I expect it a bit over 86hp at the tyre and it tugges along a pretty hefty dead weight so it gets stressed a fair bit. So its done probably 5 snowy runs of 2500ks, on average 12 or more day rides of 400ks a year and the Tassie ride of 7000ks so in at a guess for 5 years thats approx 25,000ks plus that Victoria blokes Jet Fighter shed ride 1600ks and the 5 years is a guess. Maybe 28000ks
 
chrisk said:
Me too, but it was on my 79 Jota when  bought it. Here it is mounted to the back wheel.
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Would be a bit strange to find it anywhere else... :D

I think there's a box of those somewhere in the OCT stock.  If anybody's interested, I'll dig for them.  Not sure if they are for #530 or #630 chains.

I prefer alloy, if only for the lighter weight.  Not much in it in regard to wear between steel or alloy imho.  Alloy sprockets last for 2 chains, much the same as steel sprockets.  But, there are quality differences to be found, soft steel and alloy wear about the same rate as a well-aged Parmesan. :D  Front sprockets seem to last forever!

piet
 
There used to be a bunch called The Chain Gang who sold dirtbike chains and sprocket kits. Or did, seems they are gone again
 
I've got thus far over 44K on the rear sprocket of the RGS and its alloy.
I keep it lubed with proper chain type lube. I think for your bike Vince a steel sprocket might be better but.

Oh here's a tip, dont use WD40 as a chain lube, its a cutting agent ........ :o
 
It's not power that eats sprockets, it's torque and the way it's delivered.

My Gilera single would get through sprockets and chains every 8000km.

Paul
 
I suggest you leave more than one plug cable connected on the Lav then  :LOL:

Depends on the cush - clutch hub & rear wheel.

It was funny seeing broken rear spokes on the Harris Matchless G80 from the brutal Rotax motor.

Large block knobby rear tyres on my old Yamaha TTR600 made up for lack of rear wheel cush.

Maybe you should use them on the Lav?
 
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