Shaft driven bike

[mickle]

I have never claimed that shaft drives are anything like as efficient as chains, as per usual the self declared cognoscenti are finding something to argue about where there is no argument, I stand by the fact that there have been significant improvements in shaft drive technology in the last 30 years, I am as usual at a loss to see where I made any other claims.

Directed at me I presume. If you stand by the 'fact' that there has been enough improvement in the efficiency of shaft drive transmissions to bring them close to the efficiency of chain drives please provide some evidence. Until then I'm going to stick with the facts as I know them which is that shaft drives have twice the drag of chain drives.

 

[Riding in Circles]

Directed at me I presume. If you stand by the 'fact' that there has been enough improvement in the efficiency of shaft drive transmissions to bring them close to the efficiency of chain drives please provide some evidence. Until then I'm going to stick with the facts as I know them which is that shaft drives have twice the drag of chain drives.

Assumption being the mother of all *******, you are excelling.

 

[Arsen Gere]

So if we were designing a shaft drive bike on this forum. How would we do it ?

Carbon fibre shaft?
Sealed ceramic gearing?

 

[mickle]

Assumption being the mother of all *******, you are excelling.

What are you talking about?

 

[mickle]

So if we were designing a shaft drive bike on this forum. How would we do it ?

Carbon fibre shaft?
Sealed ceramic gearing?

You'll want an engine first of all. As I've been trying to explain to Cartlike, compared to chains and sprockets shaft drives are very inefficient drive-trains for small power plants such as human beings, a fact which 100 years of research and development has done nothing to alter.

 

[GrumpyGregry]

You'll want an engine first of all. As I've been trying to explain to Cartlike, compared to chains and sprockets shaft drives are very inefficient drive-trains for small power plants such as human beings, a fact which 100 years of research and development has done nothing to alter.

You rarely see shaft drive on motorcycles below 500cc. The case for the defence rests.

Guzzi did the V50 and the losses at the wheel were dreadful. The 350 version, not imported to UK, was awful.

 

[Riding in Circles]

What are you talking about?

I have tried to be nice, let's try this instead, point out to me by direct quote, any post where I say shaft drive is as efficient as chain, otherwise put an idiot hat on and take to the streets.

 

[mickle]

I said that in respect to the comparative efficiencies of chains and shafts there had been no significant advancements in 100 years. You disagreed.

And in the interest of a peaceful and harmonious forum I'm out of here.

 

[Shaun]

Less of the 'personal' and more on the topic at hand please!!

Thanks,
Shaun

 

[Riding in Circles]

I said that in respect to the comparative efficiencies of chains and shafts there had been no significant advancements in 100 years. You disagreed.

And in the interest of a peaceful and harmonious forum I'm out of here.

What you actually said was;

In terms of efficiency one shaft drive is very much the same as the next, and in that respect nothing significant has happened to shaft drive for 100 years.