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V-Twins in Featherbeds

Discussion in 'General Classic Motorcycle Discussion' started by Bernhard, Mar 25, 2014.

  1. Petersen

    Petersen

    Joined:
    May 2, 2014
    I think to slot a Hedlund v-twin engine in there is a good use of an old Featherbed. I like this one which was featured in the Swedish magazine "MCM" in the late '90s.

    [​IMG]

    The frame is a 1953 wideline which was taken out 20mm to accomodate the Hedlund. Forks and shocks are Marzocchi, rims are Akront, frontbrake is a Grimeca, rear is a Commando. Gearbox from Quaife.

    [​IMG]

    [​IMG]

    [​IMG]

    The production of the 1000cc Hedlund started in 1978, built by Swede Nisse Hedlund primarily for sidecar racing. 50 engines were built.
     
  2. Bernhard

    Bernhard

    Joined:
    Apr 20, 2011

    Save yourself the agro of using an original frame, one of the frame makers advertise making frames for the H/D engine.
     
  3. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    The front cylinder head and exhaust pipe on the bike in the photo, stop the motor from being two inches further forward because of the frame tubes. A Mk3 Seeley frame might be better handling than a featherbed, with that motor. Whichever frame is used, two front heads would be good. A single carb on a Harley motor in either frame would be like a racing car with a log manifold.
     
  4. Petersen

    Petersen

    Joined:
    May 2, 2014
    I spotted this Danish Ducton (or Norcati) at the Rockers vs Mods in Malmö, Sweden in 2016. Ducati Monster engine, I believe.

    [​IMG]
     
  5. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    So...

    Has he improved an old Norton...

    Or ruined a perfectly good Ducati...?!?
     
  6. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    It depends on where the weight distribution ends up. A featherbed frame bike which is light in the front, can destroy the riders' confidence. The bike can feel very vague in the middle of corners. With a Manx motor, the weight is well forward an down low in the featherbed frame - so the handling is always positive and the bike tightens it's line slightly when coming out of corners.
     
  7. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Indeed Al, and with that horizontal front cylinder, it’s difficult to see how he cudda got the mass of the engine far enough forward to get remotely close to any stock Norton set up...
     
  8. Petersen

    Petersen

    Joined:
    May 2, 2014
    Last edited: Sep 10, 2018
  9. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    I think you’re being rather polite...

    And I agree !
     
  10. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    With the featherbed frame, when fitting any motor other than a big single, you always have the problem of something hitting the front frame tubes when you try to get the motor far enough forward and down. 'Fitting the best motor in the best frame gives you the best bike' is great in theory, but in practice it is often not so easy. The Mk3 Seeley frame is very good in this respect - the open front usually allows the motor to be where it needs to be to get decent handling. I like featherbed frames - the best Period 3 historic bike, is the two-valve JAWA engine in a featherbed - cheap and effective.
     
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