Search found 1439 matches

by Simon.Gardiner
Sun Jan 29, 2023 4:21 pm
Forum: Member's Bikes
Topic: Vch replica
Replies: 5
Views: 178

Re: Vch replica

Lee - welcome back - glad you're managing to find some time for bike-building! (There's a small pile of VCH articles in the Knowledgebase, mainly put together by Ralf Arvidsson. Unfortunately we've lost one of his photos and I think some of the last ones have got mixed up - if I knew what they were ...
by Simon.Gardiner
Sun Jan 29, 2023 3:45 pm
Forum: Four stroke
Topic: HT5 Oil Pump
Replies: 7
Views: 178

Re: HT5 Oil Pump

Ian - the singles may have one or two additional ball valves -placed in the timing cover, as 'backups' in case of failure of one of the pump valves. (There's an Ariel Service Bulletin about these which may help further - see no. 125 in the doc repository here: http://www.arielownersmcc.com/members_o...
by Simon.Gardiner
Mon Jan 23, 2023 4:27 pm
Forum: Four stroke
Topic: oil feed to rocker cover seal - Part number 148-40
Replies: 3
Views: 122

Re: oil feed to rocker cover seal - Part number 148-40

Get rid of the washers under the acorn nuts - make sure there are no burrs (or muck) around the banjos or the nuts. The steel nut should make its own sealing seat on the softer metal of the banjo as it's tightened. My VH has been running like this for over 10 years and doesn't leak oil (not from the...
by Simon.Gardiner
Mon Jan 23, 2023 4:16 pm
Forum: Four stroke
Topic: Washer material and application
Replies: 3
Views: 162

Re: Washer material and application

Put two fibre washers between the boxes and the banjos (where they're not subject to compressing/turning. That leaves 3 of the old washers to put elsewhere... (You don't need any washers between the banjos and the nuts - as long as you've got yellow-metal banjos and 'unmolested' original-style acorn...
by Simon.Gardiner
Mon Jan 23, 2023 4:08 pm
Forum: A Bad thing happened to my Ariel
Topic: pop….bang…..stop went the VH
Replies: 6
Views: 304

Re: pop….bang…..stop went the VH

Only back on the road a month or so since rebuilding the head (long before necessary) due to a dropped valve insert..... Michael I'm a bit late on this, but I'd be interested to know how you fixed the valve insert. I've also got a head with a dropped inert, I think it's because the insert is too th...
by Simon.Gardiner
Mon Jan 16, 2023 4:50 pm
Forum: W/NG Technical
Topic: Tin chaincase gasket material
Replies: 10
Views: 154

Re: Tin chaincase gasket material

Adam What cork are you using? I've bought several types of gasket material from several sources (autojumbles, maybe bearing suppliers or other specialists) but for an overview of what's probably fairly commonly available look here (I tried Drags first but couldn't find anything!) https://www.feked.c...
by Simon.Gardiner
Mon Jan 16, 2023 1:22 pm
Forum: Four stroke
Topic: cylinder to head mating question - w/ng
Replies: 22
Views: 513

Re: cylinder to head mating question - w/ng

To check which barrel you have count the fins (on the barrel) - the later 'big-fin' one has an additional fin at the bottom, so 10 fins in all versus 9 fins for the earlier type barrel. The later ('52-'55) 350 used a copper head gasket on the lower joint (ie not on the spigot), might be worth trying...
by Simon.Gardiner
Thu Jan 12, 2023 10:34 pm
Forum: Four stroke
Topic: Problems with valve lifter - wrong rocker arm perhaps?
Replies: 18
Views: 468

Re: Problems with valve lifter - wrong rocker arm perhaps?

Steve The offset followers are correct for a two-lobe cam (these can come in two different base-circle sizes, although the smaller one would be relatively rare and was only used for a couple of years at the start of the 1950s). So if you swap the push-rods around (longer one in the exhaust side) doe...
by Simon.Gardiner
Thu Jan 12, 2023 9:52 pm
Forum: Main Chat Forum
Topic: 1951 KH 500 Refurbishment
Replies: 4
Views: 179

Re: 1951 KH 500 Refurbishment

Errrrmmm...

If it was a non-standard colour when it left the factory I think that might have already been remarked on? ;)
viewtopic.php?f=4&t=13170

SG
by Simon.Gardiner
Wed Jan 04, 2023 11:57 pm
Forum: Four stroke
Topic: '57 NH pistons
Replies: 4
Views: 208

Re: '57 NH pistons

1956-on had a bigger 'dome' (higher compression ratio), earlier are lower compression. Late '40s had the oil control ring instead of the lower compression ring. (The 1955 Hepolite catalogue in the online library suggests 3 compression rings were used up to 1939). They're all pretty much interchangea...