Ariel KHA

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ManfredStuebinger
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Ariel KHA

Postby ManfredStuebinger » Wed Jun 12, 2019 1:01 pm

Hello Ariel community

A Ariel KHA Fieldmaster Bj. 1956 was offered to me.
After I looked at the data sheet AOMCC (http://www.aomcc.de/assets/111-ARIEL-Modelle.pdf), I am in doubt concerns what model and year.
According to this list, there were only 1953 KHA, 1955 and 56 there was no KH.
Is there a list on the basis of the FgNr the year and model can determine?

Regards
Manfred

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Eero.Korhonen
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Re: Ariel KHA

Postby Eero.Korhonen » Wed Jun 12, 2019 1:21 pm

Hello,
I think your list is incomplete, you can try this:
https://www.draganfly.co.uk/data/pdf/ariel_vin.pdf
Br, Eero
Ariel VH 1954, IZH 350 1962, H-D Sportster Hugger 1992, AOMCC Member 133

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Re: Ariel KHA

Postby ManfredStuebinger » Wed Jun 12, 2019 3:27 pm

Hello and THANK YOU, the list has already helped.
I have some time where read, the Ariels have frame, engine, gear same number.
Is that correct?
Regards
Manfred

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Re: Ariel KHA

Postby Simon.Gardiner » Wed Jun 12, 2019 3:53 pm

ManfredStuebinger wrote:...Ariels have frame, engine, gear same number.
Is that correct?

Manfred:
Gearbox numbers were never the same as any others.
Engine and frame numbers were not the the same for the 4-strokes (although one or two did come out that way).
I think frame and engine numbers were the same for the 2-strokes (Leader, Arrow etc)

Hope that helps

SG
'55 Huntmaster, '56 VH, ' 51 VH, '80 R100RT, '00 Sprint ST (but all those Ariel parts can only make one running bike...)

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Re: Ariel KHA

Postby pappleton » Thu Jun 13, 2019 1:52 pm

I think the KHA (all alloy motor) was 53 only, but the KH ran from 48-57.But i've been wrong before!!
BR, Paul
Paul Appleton '53 VH plunger, '53 VHA rigid - in many boxes, '58 H.D. pan/shovel rigid

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Re: Ariel KHA

Postby ManfredStuebinger » Fri Jun 14, 2019 8:49 am

what disadvantages did the kha have because it was only built one year?
They are much more expensive than the KH.
Regards
Manfred

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Re: Ariel KHA

Postby nevhunter » Fri Jun 14, 2019 9:01 am

They went back to an iron barrell and through bolts. A much better set up as the threads pulled out of the alloy barrell easily especially between the two cylinders where the two pressed in Iron sleeves didn't leave much metal. the 500 motor's design never gave any ability to be stretched due the closeness of the pushrod tunnels. to the bores. The iron heads are quite well designed from the cooling airflow aspect, actually a better casting effort than the alloy ones but alloy heads give more scope for higher compression to be used as they get the heat out better I like the last of the KH's with alloy heads and swing arm, but the 650 would pull a chair better. Nev

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Re: Ariel KHA

Postby john.mitchell » Fri Jun 14, 2019 11:03 am

test
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paul.jameson
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Re: Ariel KHA

Postby paul.jameson » Fri Jun 14, 2019 9:23 pm

The only difference between a 1953 KHA and a 1954-57 KH is that the KHA has an alloy cylinder with cast iron liners wheras the KH has a cast iron cylinder. The two types of cylinder are interchangeable. The alloy cylinder has a tendency to crack the alloy. The central bolt between the cylinders will also strip the threads very readily, as per the threads in alloy Square Four heads. The alloy cylinders tend to be noisier than the iron ones.

I happen to have an alloy cylinder on my 1954 (but early 1955 model year) KH because it was the only one available when I had problems with the engine shortly after the rebuild. The alloy had cracked but had been welded back together. So far it has done about 15,000 miles without trouble. I have another (much better) alloy cylinder to go on the ex ISDT KHA when I start that restoration once I finish the Healey (which is coming on well).

If you paint a 1954-57 iron cylinder with aluminium paint and avoid oil leaks to stain it, you may have the best of all worlds.
Paul Jameson
36 4G, 37 VH, 53 ex ISDT KHA (project), 54 KH(A), Healey 1000/4 (project)
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.


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