Do someone ever replace his triplex chain by a duplex chain from the Chainman?

[yves norton seeley]

Hi there,
Wondering if somone as experimented the duplex chain from Andy the Chainman?
Thanks
Yves

 

[Bernhard]

No idea about that, but I do know the Norton race team with PW used the duplex chain on the primary drive

 

[Kvinnhering]

Hi Yves.
I have used this for three years without a problem. Stretch less than triple chain with my use. I don’t want to buy anything else. Exelent produkt.

 

[franko]

I also installed one a couple years ago. I haven't had any problems at all.

 

[Ibex]

I also installed one a couple years ago. I haven't had any problems at all.

Ditto

 

[acotrel]

Timing chain from some Jaguar motor cars, fits Commandos.

 

[yves norton seeley]

Timing chain from some Jaguar motor cars, fits Commandos.

If I remember well, the Chainman says that the duplex was used in Mercedes engines
Yves

 

[Reggie]

I've fitted one this year. I've done about 4,000 miles / 6400km without any problems.

 

[Brooking 850]

When using the duplex chain, do you machine off the unused teeth on both the crank sprocket and the clutch housing(chain wheel)?
Regards Mike

 

[andre1]

Chainman duplex are regularly used as replacements for triplex primary on Laverdas. Highly regarded in Laverda circles as a good improvement. No need to machine off spare outer row of teeth.
Regards, Andre

 

[Kvinnhering]

When using the duplex chain, do you machine off the unused teeth on both the crank sprocket and the clutch housing(chain wheel)?
Regards Mike

Not necessary.

 

[Brooking 850]

Would it be worth the effort to machine off the unused bits for a marginal weight saving?

 

[gortnipper]

Would it be worth the effort to machine off the unused bits for a marginal weight saving?

Not on a road bike. Maybe on a race bike if you are not using a belt.

 

[SteveBorland]

Would it be worth the effort to machine off the unused bits for a marginal weight saving?

Hmm, if you always go for a pee before riding, perhaps...

 

[MexicoMike]

Hmm, if you always go for a pee before riding, perhaps...

LOL...yes, I suspect most of our Commandos' "excess weight" nowadays is not the Commando...

 

[Fast Eddie]

Sad, but true !

 

[acotrel]

Value analysis is a good way to save weight on a motorcycle. You could save several pounds weight on a Commando racer by ditching the isolastics and rebalancing the crank.

 

[Brooking 850]

I mustve left my mac cam on as someone is looking at my waistline!!!!

 

[motorson]

I love the chainman's chains! Cam, Primary and final drive all from Andy. None of them stretch much after the first adjustment. My cam chain has an auto adjuster on it so I have just noticed that it stays in the same place for a few years now. The final drive has been on trips of 1000 miles several times with no adjustment and the duplex primary had to be adjusted one time and that was it for at least 4000 miles.

 

[mdt-son]

Not necessary.

An opportunity to replace row of teeth on driving sprocket to fit a narrow & larger OD toothed trigger wheel (shrink fit) for ignition and fuel injection perhaps?

-Knut