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by keith.hodgenia
Sat May 28, 2011 12:25 pm
Forum: Two stroke
Topic: ARIEL LEADER ENGINE PROBLEM
Replies: 24
Views: 14714

I would have a good look at the coils Alan. There are coils about that are designed to run with a ballast resister. These coils are designed to run at less than system voltage in normal use. When the ballast resistors are cold they let full voltage through, then as they warm up they reduce the volta...
by keith.hodgenia
Mon May 23, 2011 4:54 pm
Forum: Four stroke
Topic: Rocker box gaskets (singles)
Replies: 15
Views: 3388

Hi Nev. 200 thou was just an idea as a starting point and milling the face is not difficult. One of the problems with older, well used engines. is loss of rocker clearance. I believe this is caused by a mix of valve regression and loss of metal caused by grinding head and barrel together. On my engi...
by keith.hodgenia
Mon May 23, 2011 11:36 am
Forum: Four stroke
Topic: Rocker box gaskets (singles)
Replies: 15
Views: 3388

That sounds like an excellent idea Roy, non permanent mods are always preferable to ruining original parts. I will report back in due course. Keith.
by keith.hodgenia
Mon May 23, 2011 9:58 am
Forum: Four stroke
Topic: 1937 NH Oil Breather Question
Replies: 7
Views: 1132

On the face of it re-routing to the rear chain is a good idea, many manufacturers did it. BUT. As the length of the pipe increases so must it's diameter or the flow will be restricted. Because we are dealing with pulsed waves it is possible for harmonics to set in and actually increase crankcase pre...
by keith.hodgenia
Sun May 22, 2011 3:57 pm
Forum: Four stroke
Topic: Rocker box gaskets (singles)
Replies: 15
Views: 3388

Thanks for your thoughts everyone. I am tempted to run a bead of weld around the bottom face then machine it back so the boxes are say 200 thou deeper than standard and use no gasket. Has anyone heard of this being tried before? Keith.
by keith.hodgenia
Fri May 20, 2011 3:33 pm
Forum: Four stroke
Topic: 1937 NH Oil Breather Question
Replies: 7
Views: 1132

My 1939 NH was a bit of an oil monster after a days enthusiastic riding. A re-bore returned it to a sanitary state. Prior to the re-bore there was a gale blowing out of the breather pipe now there are distinct puffs, the ball is still in place and all is well. The lack of an efficient air cleaner re...
by keith.hodgenia
Mon May 16, 2011 12:13 pm
Forum: Four stroke
Topic: Rocker box gaskets (singles)
Replies: 15
Views: 3388

Rocker box gaskets (singles)

I recently fitted some 'club' rocker box gaskets. My problem is that they are squeezing out at the edges. I have needed to re tighten the bolts 4 times in about 50 miles, each time re setting rocker clearance. Is this a known problem and is there a fix? A local engineer says he has seen this type of...
by keith.hodgenia
Thu May 12, 2011 6:28 pm
Forum: Four stroke
Topic: Differentiating between gearboxes
Replies: 4
Views: 1172

As far as I know Keith, BA has filler nearer engine ie front of box, CP has filler nearer back wheel ie back of box. Good luck. Keith H.
by keith.hodgenia
Mon May 09, 2011 5:02 pm
Forum: Main Chat Forum
Topic: Bike Insurance. Who are you using? Advice please.
Replies: 7
Views: 2008

Re: Bike Insurance. Who are you using? Advice please.

Not that it helps much, I paid £80 this year for my 39 NH with FJ. This was an increase of £4 over last year. I am a born again biker with a clean licence and now one years bike no-claims. One road side recovery would cost more than that and hopefully be more likely than a crash. Keith.
by keith.hodgenia
Thu Apr 28, 2011 9:05 am
Forum: Main Chat Forum
Topic: What are you listening to?
Replies: 13
Views: 2495

While working on the bike I am reminded of an old "Tramps" number. Burn Baby Burn.

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