Might be an idea to do a sanity check. If you have an old crankpin which you can adjust to be a sliding fit (to save having to press it in) assemble the crank and check overall balance factor.

Sammy Miller recently restored a 1957 HT3, it appears on a couple of his YouTube videos. It sold at Bonhams last November for £7300 hammer price.

Sammy says: We have just restored this Ariel HT3 in our restoration workshop, all done by our expert Jim Devereux. The whole bike has been restored ...

Hi Gents,
Not been on the forum for a while but could do with a bit of advice / knowledge.

I've been put onto a possible HT3 that was last taxed in 1968. Apparently its in bits and there is also a 500 engine (not known if its an HT5).
I haven't seen it yet and negotiations re price have not been ...

I finally got around to installing the VHA liner into my spare VHA cylinder.
Heated cylinder, cooled the liner in a snow bank.
When the cylinder was hot the liner was wiped down and it dropped in nicely with a clang as the spigot touched the cylinder.
I used 3 T120 cylinders stacked to weigh the ...

Lovely job Paul....looks beautiful
Cheers
Alan

Got all the bits bolted together in order to get an age related number. Didn't have an exhaust so the one on it is a 'replica'
Cheers
Alan
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Ah.....so I think my problem is the amount of powder coat on the top of the shrouds stopping them going into the yoke.
I think I'm getting there

Simon
Ah....the length of my shrouds is 7 1/4 inches so that's quite a difference from yours. They came in the boxes of bits. Could be BSA? That's probably why it doesn't fit right.
Thanks
Alan

Thanks will and Simon for the info.
Head bearings are correct Ariel and double nuts fit onto stem correctly.
And yes it's tightened properly.
What I don't get is that the parts book and drags diagrams both show function. H113-51 that sits on top of the double nuts. If the yoke sits with a gap ...

Roger....yes that's with it tightened up. The addition of the rubber and washers lifts the yoke up off the stem double nuts.