SpAriel MkII aka The Hermanator

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dave.owen
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Re: SpAriel MkII aka The Hermanator

Postby dave.owen » Sun Mar 01, 2020 10:52 pm

With tassels please
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Re: SpAriel MkII aka The Hermanator

Postby Steven.Carter » Mon Mar 02, 2020 6:26 am

dave.owen wrote:With tassels please

I'm on it :lol:

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Re: SpAriel MkII aka The Hermanator

Postby Vincent.vanGinneke » Sat Oct 03, 2020 9:05 pm

The F cam on the right is for a WNG and has 5-55-60-20 as timing.
The twin lobe cam in the middle has 22-70-70-25
The single lobe 'A' cam has 26-77-70-33
What cam should I choose to give a WNG a bit more poke ?
Go for the 'A 'cam ? (with longer pushrods)

3 camshafts.JPG

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Re: SpAriel MkII aka The Hermanator

Postby dave.owen » Sat Oct 03, 2020 9:45 pm

Single lobe and a bigger carb,1 inch


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Re: SpAriel MkII aka The Hermanator

Postby Vincent.vanGinneke » Sun Oct 04, 2020 8:24 am

Next one.

WNG crankshaft weighs 1 kilo less then a '54 NH crankshaft.
For speedier (....) pick up a WNG crank would be fine, but would a heavier crank be better in the long run (whatever that is)

weight WNG.JPG


weight NH.JPG

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Re: SpAriel MkII aka The Hermanator

Postby Vincent.vanGinneke » Sun Oct 04, 2020 8:27 am

the importance of maintenance......

filled to the brim
muck.JPG


on the way out
bigend.JPG

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Re: SpAriel MkII aka The Hermanator

Postby Vincent.vanGinneke » Thu Oct 15, 2020 10:05 pm

Today I bought two crankcases , one from a RAF WNG with RBH code and one from a 1949 NH .
The NH crankcase bears the code DJ2050X
What would that 'X' mean ? I have not seen the numbers ending with a letter before.

Weighed the steel NH crank and it is even a bit heavier then a later cast NH crank.

IMG_6777.JPG
IMG_6776.JPG


weight NH 1947.JPG

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Re: SpAriel MkII aka The Hermanator

Postby Vincent.vanGinneke » Thu Oct 15, 2020 10:17 pm

The steel crank; both cheeks are drilled and tapped for the sludge trap .
I have seen this before on a steel VH crank.
Was the factory only making one stamping and just used two of the same for building a crank ?
If so, they could have told the guy who was drilling and tapping the sludge trap holes that he only needed to do half of them... :lol:

Picture shows a look down the sludge trap hole :shock: timing side....

IMG_6780.JPG

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Re: SpAriel MkII aka The Hermanator

Postby Eero.Korhonen » Fri Oct 16, 2020 5:59 am

That is quite interesting, never seen that before.
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Ariel VH 1954, IZH 350 1962, H-D Sportster Hugger 1992, AOMCC Member 133

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Re: SpAriel MkII aka The Hermanator

Postby Vincent.vanGinneke » Fri Oct 16, 2020 8:16 pm

More oddities inside the 1949 steel crank, a pretty daring bodge....

NH bigend.JPG

One roller sideways ! but not enough room for a extra roller, would it have run this way ??

conrods  (1).JPG

Rod from this steel crank on top, standard WNG rod below.
I thought for a moment that they had used a VH rod with the hole excentric.
It has a pretty large lump of material on the lower part of its eye.
Part numbers are the same so is the working lenght.
Anyone seen this before ?


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