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Chinese Norton 650s?

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Re: Chinese Norton 650s?

Postby BritTwit » Sat Aug 26, 2017 8:01 am

texasSlick wrote:
Bernhard wrote:"The engine is designed to be cheap and mass-produced, with use only in the Asian region or perhaps South America… This engine and bike are not coming to Europe.”

http://www.motorcyclenews.com/news/2017 ... db3d709c57


Sounds to me like one of the 3 classic lies ..... the check is in the mail, the dog ate my homework, and there is nothing to worry about, I've had a vasectomy.

Slick



The 650 engine design appears to be thoroughly modern, with unremarkable looking, DOHC, watercooled, twin like the BMW F800.
Let's hope the new bike's chassis and body work produce a more inspired presence.

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Re: Chinese Norton 650s?

Postby Fast Eddie » Sun Aug 27, 2017 2:34 am

Maybe, design wise, it's basically half of the V4 ?
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Re: Chinese Norton 650s?

Postby Fast Eddie » Sun Aug 27, 2017 2:38 am

Comparing the two motors, the Norton head (from head gasket joint upwards) is significantly less tall and bulky compared to the BMW. Wonder why this is?
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Re: Chinese Norton 650s?

Postby ntst8 » Sun Aug 27, 2017 4:14 am

Anyone else notice that the red backdrop to the signing had the old style Norton logo, not the new trade marked version. :roll:
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Re: Chinese Norton 650s?

Postby BritTwit » Sun Aug 27, 2017 7:00 am

Fast Eddie wrote:Comparing the two motors, the Norton head (from head gasket joint upwards) is significantly less tall and bulky compared to the BMW. Wonder why this is?


May have something to do with the engine frame mounts.
The mounts for the F800 are on the sides of the head.
The Norton engine has the mounts built into the cylinder block below the head.
The Beemer head probably requires stronger structure in the head to provide a stout mounting point for the frame.
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Re: Chinese Norton 650s?

Postby acotrel » Mon Aug 28, 2017 12:54 am

The ISO9000 definition of QUALITY is 'fit for purpose', - that covers a lot of crap - Both the older mini and a Roller are quality products. 'Attention to detail' is the factor which is missing in the definition. When I was young a lot of the kids bought Commandos. Some of us thought they did that because their fathers said 'Nortons are good bikes'. A lot has to do with racing heritage and development. If the Chinese engine is a copy, the question should possibly be - 'where did the BMW engine come from and how was it developed ? '
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Re: Chinese Norton 650s?

Postby grandpaul » Mon Aug 28, 2017 5:56 am

Modern engine designs have a lot to do with their integration as stressed members of a composite superstructure. If a chassis is designed with it's own structural integrity, or mostly it's own, the engine need not be so massive as to perform structural duties.

Personally, I prefer the chassis not to be dependent, or AS dependent on the engine for rigidity, This frees the engine from potential mechanical impairment at the far reaches of it's structural envelope.
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Re: Chinese Norton 650s?

Postby BritTwit » Mon Aug 28, 2017 7:33 am

acotrel wrote: 'where did the BMW engine come from and how was it developed ? '


That was a discussion for heated debate when the forerunner of the F800, the BMW F650 was first introduced.
The engine looked a lot like a Rotax 650 unit.
BMW claimed it was a BMW design that was simply manufactured for them by Rotax.
However, the design and tech of the motor looked very Rotax-ian.
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Re: Chinese Norton 650s?

Postby grandpaul » Mon Aug 28, 2017 11:24 am

BritTwit wrote:BMW claimed it was a BMW design that was simply manufactured for them by Rotax.
However, the design and tech of the motor looked very Rotax-ian.

Original modern Triumph modular triples and fours were based on Kawasaki designs.

Apparently, anything is anything you want it to be.
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