Search found 4938 matches

by nevhunter
Wed Mar 20, 2024 11:27 pm
Forum: Ariel Talk
Topic: NH350 piston ring size.
Replies: 4
Views: 154

Re: NH350 piston ring size.

Remove equally from both ends. Nev
by nevhunter
Tue Mar 19, 2024 4:42 am
Forum: Four stroke
Topic: Changing oil with an anti-draindown valve fitted
Replies: 4
Views: 141

Re: Changing oil with an anti-draindown valve fitted

Sludge settles in the bottom of the oil tank so I mostly remove it and shake some Kero with roofing nuts in it to dislodge the sludge . Hose out with water under pressure and dry with a hair dryer. Purging the oil lines is much less important. Plain bearing motors need a good oil filter and cranksha...
by nevhunter
Mon Mar 18, 2024 4:49 am
Forum: Four stroke
Topic: Balancing individual steel flywheels
Replies: 33
Views: 1543

Re: Balancing individual steel flywheels

Mauled up tapers do not wear evenly. and will often settle to a worse position in use which will cause strain on the cases and vibration as well as timing gear whine. Unless you're racing it the iron wheels will be fine cheaper and easier to get. The crankpin in them is tapered and the rod eye bush ...
by nevhunter
Sun Mar 17, 2024 3:11 am
Forum: Four stroke
Topic: Balancing individual steel flywheels
Replies: 33
Views: 1543

Re: Balancing individual steel flywheels

Sorry to say so but that taper is a real mess I wouldn't re use the main shaft either and unless you are careful the shaft will go further into the taper and the nut will bottom on the thread.. BIG angst. Nev
by nevhunter
Sat Mar 16, 2024 9:54 am
Forum: Ariel Talk
Topic: HS Replica
Replies: 10
Views: 367

Re: HS Replica

I think you'd be flat out getting a good alloy barrel.. The Velocette 500's went back to iron as did the 500 twin ARIELS. Just having a good alloy head will reduce detonation but they need a complete redesign with a shallower combustion chamber and a bigger inlet than exhaust valve and properly flow...
by nevhunter
Sat Mar 16, 2024 9:49 am
Forum: Ariel Talk
Topic: HS Replica
Replies: 10
Views: 367

Re: HS Replica

I think you'd be flat out getting a good alloy barrel.. The Velocette 500's went back to iron as did the 500 twin ARIELS. Just having a good alloy head will reduce detonation but they need a complete redesign with a shallower combustion chamber and a bigger inlet than exhaust valve and properly flow...
by nevhunter
Sat Mar 16, 2024 1:14 am
Forum: Ariel Talk
Topic: HS Replica
Replies: 10
Views: 367

Re: HS Replica

Duck's disease refers to having your bum too close to the ground. Nev
by nevhunter
Fri Mar 15, 2024 10:49 pm
Forum: Ariel Talk
Topic: HS Replica
Replies: 10
Views: 367

Re: HS Replica

Had some of those but I've got the ducks disease so thought I'd go the Bartram Ht5 way and it's 132 KGs. Thanks for the reply. Nev
by nevhunter
Fri Mar 15, 2024 6:29 am
Forum: Ariel Talk
Topic: HS Replica
Replies: 10
Views: 367

Re: HS Replica

Might have missed my chance for a run with a HT (Trials) unless someone has an unfinished Project. I have the forks wheels and mechanicals and Hagon AMC gearbox Need clutch and kicker mechanism. Nev
by nevhunter
Tue Mar 12, 2024 7:24 am
Forum: Ariel Talk
Topic: VHA liner installed
Replies: 18
Views: 802

Re: VHA liner installed

Maybe we should go the way Velocette did. Revert to the Cast iron barrel and steel push rod cover tubes for cooling and lightness and have the fifth stud for the 500's incorporated in a new pattern. If I was a bit younger I'd probably do it. The pattern is not that complicated. The Later 500cc twin ...