more norton stuff

  1. zeppelin builder

    zeppelin builder Member

    Messages:
    1,066
    Location:
    peoples republic of scotland
    did a bit more on me norton
    machined the liner to take a ring made of 1.6 cunifer welding wire silver soldered at the join to upgrade the head gasket sealing arrangement
    i machined an old casting from an oldmilking machine to take a boyer electr
    20190703_165744.jpg onic ignition from a mates 850 commando thats the round bit on the timing cover with the red wires going in ,i went the 2 plug route so twin 6v coils in series
    What a revelation !!!
    timed at 28 deg max ,it fired up instantly an almost idled ,as well as possible wit a wild over lap cam
    it now kick starts so no more heart attacks in the post
    it revs to 7 200 claen as a whistle
    and dosent leak oil
    i have a magneto 20190703_171836.jpg beltdriven on clutchside as a a get you home if i go too far and run out of volts on the total loss boyer set up
    just pull out the cardboard between the points cople up the ht lead and home james
     
    Richard., stuvy, Shox Dr and 8 others like this.
  2. chunkolini

    chunkolini celebrity artiste

    Messages:
    8,498
    Location:
    Swansea
    Looks like a beast.
    Can I have a go on it?
     
  3. slim_boy_fat

    slim_boy_fat Forum Supporter

    Bet that sounds....interesting :thumbup:
     
  4. ronan

    ronan Member

    Messages:
    8,333
    dublin
    Looks the biz that.
     
  5. Greeves246 Member

    Messages:
    65
    Location:
    Cheshire uk
    Did you go to the Bob Mac meeting this year? I can't ride there anymore since a new race secretary took over from Agnes. Greeves246
     
  6. addjunkie

    addjunkie Member

    Messages:
    4,858
    Location:
    Northumberland. Reet oot in the sticks
    Nice but can see you getting hate mail from the rivet counters
     
    stuvy and Hopefuldave like this.
  7. frank horton

    frank horton V twins are great but 4"s rule.........

    Messages:
    1,281
    Location:
    Soon 2 B Crete
    u can park it outside my door anytime........
    so sweet.....stuff the rivet counters I say........
     
    dobbslc and stuvy like this.
  8. zeppelin builder

    zeppelin builder Member

    Messages:
    1,066
    Location:
    peoples republic of scotland
    no unfortunately i was working abroad
    and i couldnt give it to young gordon
    as it needed a lot of work to get it up to scratch . However its now going great
    and starts on the kickstart
    hopefuly get it out to a few shows/runs
     
    stuvy, ronan and Greeves246 like this.
  9. zeppelin builder

    zeppelin builder Member

    Messages:
    1,066
    Location:
    peoples republic of scotland
    heres the groove machined into the top of the liner to accept the wire seal ,think they were commonly known as willis rings in the car world
    scraped it in by turning the chuck by hand with a small form ground tool was afraid it might jam up and cause a catastrophy it was easy and totaly safe
    had bother with liner sinking into the alloy casting and losing its sealing ability i might make stainless studs to allow for expansion as i fear when it gets hot it grows alot
    and the current studs "lister diesel" 20190625_205259.jpg 20190701_154128.jpg 20190701_154128.jpg aint budging
    next is the milking machine part it used to be a wick type oiler has a nice acme type thread to screw the cap on
    it now houses the boyer trigger gubbins twin triggers but one causes a harmless spark at the exhaust stroke or fire a twin cyl bike
    so pretty universal 20190625_205259.jpg
     
  10. RichardM Member

    Nice job.

    Will stainless studs be strong enough?
     
  11. zeppelin builder

    zeppelin builder Member

    Messages:
    1,066
    Location:
    peoples republic of scotland
    i dont know but i think phil irving mentioned it in his book tuning for speed could go up to 12 mm if needed its 666 cc at 10.5 -1, with a 1mm squish clearance and no detonation at 28 btdc with 2 plugs,s a big expansion difference twixt hot n cold if all else fails its a, porous nickel bore or cast iron job but that would be heavy
     
  12. RichardM Member

    12.9 is stronger than A2 or A4.

    I assume they go down into the cases?
     
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