1972 Norton Combat Commando

Matt Spencer · Nov 3, 2012

Heres the little devil ; Blanking Plate :

Youll need to get the disk grinder & the Black & Decker out to fit a Magneto , to this one .

Hobot · Nov 3, 2012

I don't know much but for Combat but for some reason Norton removed the fire starters out from under the ticklers and for a time used the same cases with a stamped steel cover, apparently some time in '72 models they came with the area just cast flat as its surrounds. So maybe some Combats did and some didn't. Then again early Combats earned the Bomb name so who knows what cases were used if the first ones badly injured. Now the area is just for the cute looks of the triangular TS cover and hanging on venting devices.

Matt Spencer · Nov 3, 2012

Heres a ANTIQUE

twin , showing all the bits. Obviously it has a HOLE through there ( will see if I can find one ) for it to go through .

The one fitted forward would appear to be a Electric Starter .

8)

Here are a set of cases fitted around the standard hole .

Hobot · Nov 3, 2012

Alright Matt what is going on with this unique revelation of forward thinking? That drive mount looks cast on.

Rohan · Nov 3, 2012

hobot said:
Alright Matt what is going on with this unique revelation of forward thinking? That drive mount looks cast on.

That 'drive mount' is the front mounted Lucas generator, fitted to ALL early Dominators 1949 to about 1958 (when Nortons adopted the alternator to the drive side shaft).

Rohan · Nov 3, 2012

For one moment there, we thought Matty had a dommie in the shed..... !

Rohan · Nov 4, 2012

P.S. That front mounted 6v Lucas Generator is driven via a fibre gear and a friction clutch, so tric starting is no-go .....

Hobot · Nov 4, 2012

Ok thanks Rohan, at least you gave verification that friction drives are good enough for a workable wattage. I didn't think the area was robust enough for starting loads but was wishing it was.

Dirt2Oil · Nov 4, 2012

OK it makes sense to me now. Thanks for the pictures Matt.

L.A.B. · Nov 4, 2012

Dirt2Oil said:
hobot said:

I've two Combats with low down rear breathers and CHO heads plus disc brake and both cases were solid cast over the old magneto area.

Click to expand...

Perhaps I am slower than I think but I don't quite follow the comments about the solid cast over mag area. Can someone post some photos showing the difference or point me to some that could help me understand the differences in the cases? Thanks everyone for your suggestions.

The blanking plate covered the hole intended for the ill-fated self-destructing electric starter drive that the factory wisely decided not to fit at the last moment for 1971, however the timing side case with the hole covered by the blanking plate continued to be used and it had nothing whatsoever to do with a MAGNETO.

The blanking plate timing case continued on into 1972, the plate was eventually deleted and the area left cast over once again as it had been in '69-'70 (early 20M3S case).

http://atlanticgreen.com/engcases.htm

nortonspeed · Nov 4, 2012

Matt Spencer said:
Heres the little devil ; Blanking Plate :

Youll need to get the disk grinder & the Black & Decker out to fit a Magneto , to this one .

Also need that disk grinder and Black & Decker in case of the blanking plate because those fixing holes do not match the magneto holes.

1972 Norton Combat Commando

Matt Spencer

Hobot

Matt Spencer

Hobot

Rohan

Rohan

Rohan

Hobot

Dirt2Oil

L.A.B.

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