My other aircooled German project

Discussion in 'Show Us Your Bit On The Side' started by stirlingmoz, Jul 9, 2018.

  1. Started in December 2017 as a bare frame bought from a friend who changed his mind about building a cafe racer.

    It’s a 1971 BMW R75/5.

    [​IMG]

    As of Saturday it looks like this.

    [​IMG]

    The engine (bought at an auto jumble) looked like this

    [​IMG]


    [​IMG]

    After a clean and rebuild

    [​IMG]

    [​IMG]

    Getting close to being able to try and start it up :)

    Stirlingmoz
     
    paradox, Merlin Cat, mcswiggs and 9 others like this.
  2. foe

    foe

    Beautiful! More pics of the complete bike please!
     
  3. I'd love a cafe racer one day. I don't know much about bikes though.
     
  4. Are those the original wheels?
    Lots more pictures please love it
     
  5. Dubs

    Dubs Sponsor

    Nice bike! :thumbsup:

    Another thing on my want list..
     
  6. Nice and good luck :)
     
  7. Now you've done it! I am going to have to drag my R80RT out if the garage now. Good work though.

    I thought about doing a cafe racer with it 10 years ago. Now everybody's doing it, so I might just keep it as is.

    Sent from my Nexus 5 using Tapatalk
     
    Merlin Cat likes this.
  8. Thanks all for the words of encouragement.

    I’ve had various aircooled BMW’s over the years (since about 87) and have amassed plenty of parts - as you do.

    The offer of a solid pre 73 (then tax exempt) bare frame was too good to pass up. It was something to hang all my bits on.

    Being a 1971 model it was originally twin rear shock with spoked wheels.

    I’ve fitted the wheels, Brembo brakes and monoshock suspension from a later 1985 model.

    I don’t like the modern cast alloy wheels but they are cheap compared to their spoked counterparts. I will source some spoked wheels eventually.

    I’m not sure I could chop up a perfectly good bike to build a cafe racer but this is a right old Frankenstein’s monster and no good bikes were harmed in the build.

    I’ve got a V5 for the frame in my name so unlike the crew cab, no dramas getting it back on the road.

    Stirlingmoz
     
    Merlin Cat likes this.
  9. As requested, a couple more pics from last summer

    Rolling frame sitting on an empty beer crate. Beer crates are essential old school bike building tools :)

    [​IMG]

    and then engine in. It took three of us to get the engine in. One sat on the bike and one holding on to each cylinder. Surprising how heavy it was

    [​IMG]

    and then on a roll, the gearbox and modified air filter housing.

    Not sure how practical the exposed air filter will be if it rains

    [​IMG]

    Stirlingmoz
     
    Merlin Cat and Richard W12 like this.
  10. Fish

    Fish Administrator

    I have a BMW too. Its a bitza beemer.
    R100 frame
    R80 engine
    90/7 tank and seat
    Early ish spoked wheels with 2 discs up front
    Its been through the Sahara (You can just make out the alloy sump plate that was made for the job) and over the Alps.
    [​IMG]
     
    Merlin Cat and stirlingmoz like this.
  11. Glad I’m not the only one with the German aircooled affliction. Great looking bike and looks like it was a great adventure too - mine hasn’t been off the drive yet :)

    Those leg shields are very retro.

    Stirlingmoz
     
    Fish likes this.
  12. Cool. I used to commute on mine. 50k miles in 4 years. Sahara and the Alps ! Only a beemer can put up with that kind of use.
    Sent from my Nexus 5 using Tapatalk
     
    Merlin Cat and Fish like this.
  13. Tried to get it started today but it’s fighting me.

    Static timing is good and I’ve got a healthy spark.

    The carbs came from eBay so I might have to bite the bullet and strip and clean them.

    Stirlingmoz
     

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