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by alan.moore
Tue Sep 22, 2015 12:25 am
Forum: Ariel Talk
Topic: Prewar Handlebars
Replies: 9
Views: 849

Re: Prewar Handlebars

Gents, Whilst the 1939 manual does not mention it the Waller book says the small grub screw was a safety device to prevent the bars turning if the mounts were no fully tight. My bars have no hole (but they could be the wrong ones....something else to source!) but the casting does have a flattened se...
by alan.moore
Mon Sep 21, 2015 11:40 pm
Forum: Ariel Talk
Topic: DIY Parkerising of nuts and bolts...How to
Replies: 13
Views: 1960

The finished article

To end here is the finished product again, original Ariel stud is the one on the right: IMG_0339.JPG As I have quite a few bits to do I will update this post as to how the solution holds up and any problems I come across. Parts such as the wheel spindles do not appear to have been originally parkeri...
by alan.moore
Mon Sep 21, 2015 11:30 pm
Forum: Ariel Talk
Topic: DIY Parkerising of nuts and bolts...How to
Replies: 13
Views: 1960

Parkerising

I get the solution temperature up to about 80 degrees C, give it a good stir then let it settle for 15 minutes, any solids fall to the bottom. Then, using gloves, attach the parts to your hanging wires. I have found that if the wire is tight around the part you can get missing areas of parkerising a...
by alan.moore
Mon Sep 21, 2015 10:45 pm
Forum: Ariel Talk
Topic: DIY Parkerising of nuts and bolts...How to
Replies: 13
Views: 1960

Preparing the parts

As with nearly all restoration procedures preparation is the key to success. Parts must be thoroughly de-greased. I start with parraffin for the gungy stuff, wash off in hot water and washing up liquid and then into a heated bath of caustic soda. You can buy 500g for less than £1 on the highstreet a...
by alan.moore
Mon Sep 21, 2015 10:17 pm
Forum: Ariel Talk
Topic: DIY Parkerising of nuts and bolts...How to
Replies: 13
Views: 1960

Making the solution

I started off with 3 litres of water in the container and slowly poured in 125ml of the phosphoric acid. I then began to heat it up. Once it was at 90 deg C I cut up about 3/4 of the steel wool into small pieces and added them. It seemed to take forever for them to dissolve (the acid concentration i...
by alan.moore
Mon Sep 21, 2015 9:21 pm
Forum: Ariel Talk
Topic: DIY Parkerising of nuts and bolts...How to
Replies: 13
Views: 1960

Hardware

You need: A stainless steel container. I got a 24cm wide pan, which holds about 3.7 litres, for £7 from one of those 'cheap' highstreet shops. A means of checking the temp of the solution: a cooking thermometer (metal prong with a dial) £0.99 from cheap shop. My pan came with a glass lid with a pres...
by alan.moore
Mon Sep 21, 2015 8:56 pm
Forum: Ariel Talk
Topic: DIY Parkerising of nuts and bolts...How to
Replies: 13
Views: 1960

Ingredients

The basic ingredients are: Phosphoric acid Manganese Oxide iron Water (distilled) Phosphoric acid: This is the main ingredient in rust removal products. The % strength of these products can be variable. In the UK I found HG Rust remover (B and Q £7 for 500ml), the MSDS sheet says its is about 58%. I...
by alan.moore
Mon Sep 21, 2015 7:52 pm
Forum: Ariel Talk
Topic: DIY Parkerising of nuts and bolts...How to
Replies: 13
Views: 1960

DIY Parkerising of nuts and bolts...How to

The nuts and bolts on my 1939 VH all had a hard dull black finish, that on the engine and gearbox studs having stood the test of time really well. From what I can gather this finish is a UK process called 'Coslettising', a heated phosphoric acid and iron process, which bonds to the surface of steel....
by alan.moore
Mon Sep 21, 2015 6:44 pm
Forum: Ariel Talk
Topic: Prewar Handlebars
Replies: 9
Views: 849

Re: Prewar Handlebars

Tony My 1939 has those type of mounts but my handlebar are holeless. The 1939 owners manual says that "the handlebar is carried in a bracket in which its is fixed through the medium of compressed rubber rings. The two large compression nuts must always be kept screwed up HARD in order that the ...
by alan.moore
Mon Sep 21, 2015 11:39 am
Forum: Four stroke
Topic: Finish on fastners
Replies: 7
Views: 730

Re: Finish on fastners

I will post a 'How to' if and when I can get a decent finish....it is a bit grey at the moment. Images of Parkerized guns on other forums show that a good uniform black finish can be achieved. The ratio of acid to water should be about 1:24, but this depend on the % strength of the acid used. Re the...

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