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top yoke differences
#817284 07/24/20 6:55 am
Joined: Jan 2014
Posts: 611
BigBars Offline OP
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Hi folks, I imagine the only difference to the German / Finland top yoke would have been the Nieman Lock surround?

Love to know what forced that specific difference to be implemented, some well meaning anti-theft Law?

Or is the surrounding the same but only the lock was different? (guess not, otherwise top yoke would have same part number)

[Linked Image from i.imgur.com]


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Bikes: '69 T120 on average (1967 rolling frame and 1971 Bonnie engine) + '56 1/2 T110 on average (58 rolling frame - with 55 iron head engine) + 74 T150 Home model.
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Re: top yoke differences
BigBars #817348 07/24/20 10:42 pm
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I had not heard of this variant until a few months ago when the lock issue came up.
I share your view that it must have been some sort of anti theft legislation that prompted it.
Pre EU so down to individual countries— but just Germany and Finland seems a strange combination.
Can anyone throw any light on this or is it a mystery destined to be locked away from us forever (forgive the pun!).

Re: top yoke differences
Tridentman #817359 07/24/20 11:40 pm
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Originally Posted by Tridentman
Can anyone throw any light on this or is it a mystery destined to be locked away from us forever (forgive the pun!).

It seems the T160 for "All European Continent" had a similar Neiman lock.

[Linked Image from i.postimg.cc]

[Linked Image from i.postimg.cc]

The Norton Commando 850 Mk3 had a Neiman steering lock (upper yoke).

An alternative Neiman upper yoke (and lock) is listed in the '74 850 Mk2/2A parts supplement but I've yet to see an example so it's possible none were produced unless someone knows otherwise.

Last edited by L.A.B.; 07/24/20 11:44 pm.
Re: top yoke differences
BigBars #817410 07/25/20 1:13 pm
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Thanks for the input, Les, helps to clarify the situation.
However Iam left with the question— what did the Newman lock do that the old Wilmot- Breeden didn’t?

Re: top yoke differences
BigBars #817454 07/25/20 9:05 pm
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I don't know the difference in the two lock mechanisms, but if it's installed in the bottom triple clamp, as in that illustration, it would be more difficult for a thief to drill it out.
I've never seen one installed there.


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72 T120V cafe project "Mr. Jim"
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Re: top yoke differences
DavidP #817456 07/25/20 9:24 pm
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Originally Posted by DavidP
I don't know the difference in the two lock mechanisms, but if it's installed in the bottom triple clamp, as in that illustration, it would be more difficult for a thief to drill it out.
I've never seen one installed there.

The lock was moved to the lower yoke on the T160 due to the ignition switch and warning light console mounted on (above) the T160's upper yoke (same for the '79-on T140). The lock is also drawn facing in the wrong direction.

Last edited by L.A.B.; 07/26/20 10:47 am.
Re: top yoke differences
BigBars #817505 07/26/20 5:44 am
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Makes sense. Everything is more difficult on a T160. laughing


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"

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