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by john.whiting
Tue Jul 02, 2019 2:09 pm
Forum: Ariel Talk
Topic: Ariel single 1950
Replies: 3
Views: 231

Ariel single 1950

I wonder if someone could tell me if MN192 engine no,and AB426 frame no belong together...apparently a complete bike twenty years ago,but stripped for a parts in a reconstruction of a Square 4.,and some of the rest sold on ebay. I can rebuild it as either an Ariel if the parts match or a JAP special...
by john.whiting
Sun Jun 30, 2019 7:39 am
Forum: Four stroke
Topic: VH-crank - oil supply
Replies: 24
Views: 691

Re: VH-crank - oil supply

After a failure,always thoroughly clean all metallic sediment form the entire oiling system and crankcases......this sometimes takes a bit of doing,because the sharp steel particles tend to lodge in oilways ,and inside the crankcases..........the oil tank and pipes must also be thoroughly cleaned,on...
by john.whiting
Sun Jun 30, 2019 12:39 am
Forum: Four stroke
Topic: VH-crank - oil supply
Replies: 24
Views: 691

Re: VH-crank - oil supply

it should be noted that even with the wrong gasket ,and no pressure on the gauge,there is still full oil supply to the crank,and the rockers seem too get sufficient oil too.......there is enough resistance in the passages to lift oil to the top end...........if you doubt this,look at the later syste...
by john.whiting
Sat Jun 29, 2019 5:22 am
Forum: Four stroke
Topic: VH-crank - oil supply
Replies: 24
Views: 691

Re: VH-crank - oil supply

Dont rule out a poor quality bearing...........no doubt youve heard the old story how AJS was trying to save a few pennies on bigends with a cheap supplier,and all the units failed,forcing the Stevens to declare insolvency,and sell the brand to Matchless.
by john.whiting
Sat Jun 29, 2019 5:14 am
Forum: Main Chat Forum
Topic: Black Ariel & sidecar?
Replies: 18
Views: 635

Re: Black Ariel & sidecar?

I can guarantee a steep learning curve.........Dunno about there,here old sidecars have to be re engineered ,bodies must be rigidly bolted to frames,not spring suspended as is traditional.Which means you need a sprung wheel on the sidecar frame.......you also need a brake ,which old sidecars didnt h...
by john.whiting
Sat Jun 29, 2019 5:09 am
Forum: Ariel Talk
Topic: Is This A Stainless Rim?
Replies: 11
Views: 405

Re: Is This A Stainless Rim?

Back to the subject...it does look blueish,not yellow like stainless.........it may be a 400 grade semistainless,and chromed as well.If carbon steel, it will be equally as magnetic as mild steel.....even 400 grades are not strongly magnetic......Another check might be the punched holes,they might be...
by john.whiting
Sat Jun 29, 2019 1:38 am
Forum: Ariel Talk
Topic: Is This A Stainless Rim?
Replies: 11
Views: 405

Re: Is This A Stainless Rim?

Stainless rims should be knurled or taped up and sandblasted inside the bead,or the tire will creep round and cut the valve off.........Incidentally,there are a great many types of stainless and semi stainless steels.........the austenitic grades generally used for decorative work(and rims) are quit...
by john.whiting
Thu Jun 27, 2019 1:23 pm
Forum: Four stroke
Topic: Replacing a VB tappet guide
Replies: 4
Views: 229

Re: Replacing a VB tappet guide

Valve guides should be done the same.....always cut the guide off flush on one side,and pull from t'uther ,so carbon and rust dont score the bore in the barrel...An experienced mechanic can do it with one blow of a 4lb hammer,but beginners are advised to use a puller,like yours.
by john.whiting
Thu Jun 27, 2019 1:17 pm
Forum: Four stroke
Topic: VH-crank - oil supply
Replies: 24
Views: 691

Re: VH-crank - oil supply

I would think once the oil was deposited half way along a rotating shaft,centrifugal force would take over and draw the oil outwards to the trap and crankpin......there is no resistance to flow with a roller bigend......Early thirties Matchless motors had drillings thru the crankpin,and oil was supp...
by john.whiting
Thu Jun 27, 2019 5:13 am
Forum: Ariel Talk
Topic: 1928 Ariel some wood and some tape ..
Replies: 36
Views: 1717

Re: 1928 Ariel some wood and some tape ..

Your biggest risk here is being run down by a car driver using a phone,not a particularly serious offence,according to the gubmint.....Its usually quite nice here in mid winter......lovely sunny warm days ,not a cloud in the sky......lately seems always cold and wet.It went straight from blazing hot...

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