Earles Forks - BMW R26 Build / Conversion

Discussion in 'Some Assembly Required' started by Pezz_gs, Jan 28, 2018.

  1. Pezz_gs

    Pezz_gs Cant ride for crap

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    I bought these Earles Forks many years ago, and once they arrived they ended up being bent.

    All I have is what is in the photo's. I want to put them onto a R26 frame I am building up . . again just have the bare R26 frame too.

    To be able to straighten them I need to get a to brace . .

    I measued from the top of both legs and its 165mm centre to centre.

    Just want to make sure I order the correct top brace.

    Any advice on what model they suit would be appreciated :-)

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    #1
  2. Pezz_gs

    Pezz_gs Cant ride for crap

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    Is it possible that these are off a /2, or not heavy enough??

    Is there a good contact who plays with these I could email?

    Thanks
    #2
  3. CafeDude

    CafeDude Ride to eat.....

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    It's not a /2 (twin cylinder) fork. The swingarm lugs on the downtubes are more rearward on a /2. The lugs on the forks in the photo are much more "forward", which identifies them as R26/27.
    #3
  4. Pezz_gs

    Pezz_gs Cant ride for crap

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    Thank you :thumb

    Am I correct in assuming the R26 and 27 top plate will be basically the same?

    I can find a part number for the R27 top plate 31412000129 but nothing for the 26 top plate?

    EDIT:
    I found a part number for the R26 31412000124 but no longer available and it appears the R27 isnt either.

    May need a diagram to get one laser cut. . .

    Also looks like the 26 and 27 had the same front fork 31412000350 (Part 8)


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  5. CafeDude

    CafeDude Ride to eat.....

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    I believe the R26 handlebar risers were rubber mounted, while the R27 were rigidly mounted? Doing this from memory, but I think that was the only difference. Top plates might be different accordingly, but either will fit the forks. A slash 2 top plate will also fit those forks, and vice-versa.

    Here's a photo of an R26/27 top plate. I happen to have a couple on the shelf....I like to use these along with the R26 handlebar risers when using a large tank like a Hoske or Heinrich on a Slash 2. It gives greater clearance between the bars and the tank. The Slash 2 top plates are stamped steel. The R26/R27 top plate is a heavy cast steel piece. Anywho, the photos;

    IMG_7411.jpg IMG_7409.jpg

    Attached Files:

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  6. Pezz_gs

    Pezz_gs Cant ride for crap

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    Thank you @CafeDude

    I will get it CNC laser cut out of 6mm plate

    If you could do a few measurements in millimetres that would be very helpful

    Centre to centre and off set would be brilliant

    I will contact Blue Moon Cycles as the have a great Vintage BMW parts catalogue

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    #6
  7. CafeDude

    CafeDude Ride to eat.....

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    I'll take the measurements this evening for you.
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  8. danedg

    danedg Horizontally Opposed

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  9. Pezz_gs

    Pezz_gs Cant ride for crap

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    I have ordered a R27 top plate via BobsBMW which will hopefully be here in a few weeks . . . .

    So where to from here??

    As I dont have any drivetrain just the frame, bare swingarm and Earle's forks I'm thinking a conversion might be on the cards.

    I had thought about many options but there isnt much to maintain the shaft drive.

    Im going to put some feelers out for the mechanicals, but Im not holding my breath down under

    In the meantime I will get a set of Indian replica R26 front and rear guards.

    I have 6 airheads and I'm wanting to stay a single and aircooled.

    So what motor would look 'right' in the frame. . . . .

    I have looked an aircooled singles and some twins and therefore a chain drive. Fabricating a new swing arm will be pretty straight forward.

    Like the SR250 single engine and lots of nice parts available. E-start helps too
    #9
  10. MJH89

    MJH89 Adventurer

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  11. Pezz_gs

    Pezz_gs Cant ride for crap

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    Thanks for that :thumb

    That is where I would like to go . . . eventually but prbably not as off road as that R26 GSA above

    Me thinks R26G/S :-) would be nice
    #11
  12. Pezz_gs

    Pezz_gs Cant ride for crap

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    The frame just arrived back home . . . Frame no: 353607 but unsure on the production year as all the decoders wont work with 6 digits

    Just put a 18" 400/4 front wheel as I had one

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    Look from behind
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    A few brackets Missing. An easy fix

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  13. Mouse

    Mouse I'm only smelly

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    Sometimes I wonder about the way you think pezz but then reflect my baseline is possibly suspect :1drink

    Chain drive. Hmmm, this should be interesting.
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  14. Pezz_gs

    Pezz_gs Cant ride for crap

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    Just looking at the pricing of parts and shipping and there is so much not there that I would be easier to convert it . . . .

    Find a complete R26/27 for the collection

    The /2 Conversion thread has lots of parts converted from later airheads for the /2 but I want it to be a single

    I had breifly thought about a Diesel single. . . . :hmmmmm
    #14
  15. Mouse

    Mouse I'm only smelly

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    A single diesel would be worse than strapping yourself to a 100lb jackhammer... no way in hell I'd go there.

    Interesting challenge. Shoe horn a lc4 into it? Dunno bout clearances. Small electric prod singles, guess you could build it off an old cb125 sort of thing.

    I can think of many ways to inflict pain upon myself, solving these sorts of problems is one method of pain I rather prefer to avoid.

    I think I'd keep as much original as I could, it'd have some residual value :brow
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  16. Pezz_gs

    Pezz_gs Cant ride for crap

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    Maybe I should move this thread over to Some Assembly Required??

    I do have a F650 Funduro motor on the shelf

    But I was wanting a 250......
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  17. Pezz_gs

    Pezz_gs Cant ride for crap

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    Did a bit of research today after seeing some pics online of a bevel box . . . from Nov 2008 :twitch

    Found the fellows who made this and Im liking the idea of making one of these to mate up to the shaft drive on the RHS and have a sprocket on the left hand side that would then have a short chain to the countershaft sprocket. I will call him tomorrow and get his thoughts.

    This will allow me to run bascially any aircooled single I want :hmmmmm

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  18. Mouse

    Mouse I'm only smelly

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    Hp thief surely? But cool. Where's the turbo going to fit?
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  19. Pezz_gs

    Pezz_gs Cant ride for crap

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    Hey Mouse, yes agree with two bevels to go through . . . . it wont be a race bike.

    Just kicking stuff around as I collect bits for the chassis, however like this idea as I can maintain the shaft and not have to cut up the frame

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  20. Mouse

    Mouse I'm only smelly

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    Ty seat and fuel tank hmmm.

    Mount the engine east west and a short chain linking drive sprocket to shaft? That'd be different.
    #20
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