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R5156cSat Feb-24-07 02:37 AM
Member since Mar 18th 2009
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"Atlas 650?"


  

          

I have an oppotunity to purchase a Norton Atlas 650? for
$1000.00. It's been sitting in a guys garage for 20+ years so
it is not running. He also does not have a title but I think I
can get one easy. I really want to buy the bike but i don't
want to get stuck with something i can get fixed. I am going
to get the engine number and frame number when i see it next.
Is there anything i should look for? He says it is the
original engine and frame. Any help would be greatly
appreciated.

  

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dynodaveSat Feb-24-07 07:27 AM
Member since Mar 18th 2009
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#1. "RE: Atlas 650?"
In response to Reply # 0


  

          

Atlas is a 750

650 are caled manxman or 650ss or 650 mercury, pretty much all the same.

  

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R5156cSat Feb-24-07 07:41 PM
Member since Mar 18th 2009
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#2. "RE: Atlas 650?"
In response to Reply # 1


  

          

How will I know if it is a 750 or a 650 ?

  

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dynodaveMon Feb-26-07 01:20 PM
Member since Mar 18th 2009
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#3. "RE: Atlas 650?"
In response to Reply # 2


  

          

The 750 atlas frame # is coded 20/and engine is coded 20M
I believe the 650 is coded 18, frame and engine.
I have 4 atlas' so I'd gladly trade an atlas for a 650.
650s are a little bit tougher for engine parts.
But I'd rather have different machines, and enjoy the challange.
cheers
Dave

  

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R5156cTue Feb-27-07 03:41 AM
Member since Mar 18th 2009
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#4. "RE: Atlas 650?"
In response to Reply # 3


  

          

Thanks Dave. I will get the engine and frame number this weekend hopefully. I have called several British bike places across the country and I've been told there is an Atlas 650 but I tend to believe they are mistaken as the roy bacon book shows it as a 650 SS as you said. I guess I just have to wait until I see the numbers. Is there a difference in value between the 650SS and the Atlas 750? Thanks, Bob

  

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dynodaveTue Feb-27-07 10:25 AM
Member since Mar 18th 2009
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#5. "RE: Atlas 650?"
In response to Reply # 4


  

          

Hi Bob
Good luck getting reliable tech info on nortons from "generic british bike shops"......LOL... Many internet Norton bulleting boards are often incredibly disappointing to me. And to be sure....I am NOT the technical correctness cop.
The 650SS is sheetmetalwise absolutely the same as an atlas. Only one exception, the atlas usually came with the "bigger" tank and the 650SS usually came with the "smaller" tank. However either bike can accept either tank. Visually the tanks are so similar that few even notice the difference.
Difference in value is minor and more based on personal preference.
In the US the atlas will be much more common.
Performance differences attributed to the 650SS comes from high compression. The atlas is about the same in overall performance but with a lower compression. Rumored extra atlas vibration is likely from extra piston weight.
Different barrels and the head are the biggest difference from an atlas, and are not interchangeable.

  

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