BMW Cafe Racers - post a pic?

Discussion in 'Airheads' started by Nick Makwell, Aug 30, 2006.

  1. AlKay191

    AlKay191 Been here awhile

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    On Florida beach or roaming the country
    these are R90 heads with 42/44mm valves and highly modified intake. I honestly don't know what to expect, but will try to run them with 36mm flatslides off my R100 and 34mm roundslides that I got laying around.
    I got a Jap shop with a Dyno around the corner....
  2. drhach

    drhach We can't stop here, this is bat country!!

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    I have to confess that I love seeing the occasional sacred cow roasting over a spit. I could never bring myself to fly in the face of the Airhead illuminati, but I love it when someone else does. Cool bike.

    p.s. did you post that on chopperunderground? I seem to remember seeing pictures of it somewhere else. Maybe Jockeyjournal?
  3. AlKay191

    AlKay191 Been here awhile

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    both , but I spend most time on JJ.
    don't fear the illuminati.... what can they do? take your BMW badges and kick you out of the Anonymous?:1drink
  4. davef

    davef I'm outta order

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    If you look close, it's not really lowered. They installed what looks like a telefix fork brace, which replaces the stock chrome horseshoe brace. Where it's mounted, they had to slide the rubber gators up, giving it the appearance of load on the forks. Hope that helps.
  5. kixtand

    kixtand Long timer

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    Interesting... On my 750 I'm running heads w/ 44mm intake valves and the stock 38mm exhaust with stiffer springs on both sides, and they have been on the flowbench as well. I am running 38m Dell'Ortos, w/ the pumps disabled (AHRMA rules...) I had the bike on the dyno about a month ago and confirmed that the mixture is correct w/ the jets I spec'd, w/ just a slightly lean spot right off of idle.

    The bike pulls strong up to 8K RPM, but I have the rev limiter set at about 7500 just to keep the engine internals internal :deal .

    What size second plug are you running w/ those big valves?? (I can't imagine there's much room in there...)

    Let us know what you find out w/ the different carbs.

    kix
  6. Hawk Medicine

    Hawk Medicine Coyote's Brother

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    <http://img.villagephotos.com/p/2004-3/659434/BMWright.jpg>
    I dissagree....

    THere should be about 12" of fork travel on an Airhead front end and those gaiters are clearly compressed further than the 1/2" or so that the Telefix takes up. (Yes, I went out to the garage and looked!)

    In fact, the gaiters appear to be incorrectly installed on the telefix as well. The clamping portion of the Telefic should be mounted so that it clamps onto the same machined area where the gaiters once went. Then the gaiters get clamped to the machined lip at the top of the Telefix. How come I'm seeing the fork tube? Oh yeah... It's because the gaiters arent clamped down!

    The bikes been lowered, thereby eliminating most of the ground clearance, fork travel and safety margins.

    If looks can kill, heres your example.
  7. thjakits

    thjakits Adventurer

    Joined:
    Mar 24, 2008
    Oddometer:
    93
    Location:
    Panama or in the jungle
    "...I'm not sure yet if I'll keep it as 1000 or reduce it to 750......"

    Serious question:

    Why would you want to reduce to 750 if you already have 1000??
    Everyone wants to go bigger...!

    Something I am missing?

    thjakits
  8. Pierce21

    Pierce21 n00b

    Joined:
    Jun 4, 2008
    Oddometer:
    5
    CafeBMW are you having your work done by Moto works?
  9. DELTATANGO

    DELTATANGO Motorcyclist and Dog Walk

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    Beautiful MCs

    Thanks all.
  10. AlKay191

    AlKay191 Been here awhile

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    I just got these heads and thought I'd be the first around here to run 44mm intakes. Looks like you beat me to it.
    Curious about your Dyno numbers.... Care to share?

    Also, do you like the way it runs with smaller exhaust and 38mm carbs? I got a set of 38mm Mikuni roundslides I can try.
    One thing I'd like to experiment with is longer intakes between carbs and heads. With rearsets, I'll have plenty of room.
  11. AlKay191

    AlKay191 Been here awhile

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    This bike serves double duty as my bar-hopper and race bike. It is fully prepped and wired for WERA V4. All I need to do is replace headlight with number plate, take off taillight (2 bolts and wire plug) and add a belly pan.
    If I reduce it to 750 it will be legal for WERA V3 and AHRMA's BEARS class.

    [​IMG]
  12. kixtand

    kixtand Long timer

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    I'll try and scan the Dyno plots in today and post them up.

    I am quite happy with the way the bike runs as it is currently set up. The 38mm exhaust valves are plenty big enough, in my opinion. The bike idles at 1200-1400 RPM, but some of that might be due to the lightened flywheel...
  13. thjakits

    thjakits Adventurer

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    Panama or in the jungle
    Alkay, that clears the question!

    Thought there might be some hidden tricks to get more from less! :D

    Good Luck racing!!

    The way you deal with street/race/street you probably would find a fast way to go 1000/750/1000 in short order too!

    thjakits
  14. bill pierce

    bill pierce I don't wana pickle

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    Dang this thread makes me wanna go pick up an airhead. I miss my old R65:cry
  15. Wirespokes

    Wirespokes Beemerholics Anonymous

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    You could get my R65 - dual discs, fork brace, WP shocks, wider LS wheels, heated grips, stainless mufflers, bags... sweet ride!
  16. AlKay191

    AlKay191 Been here awhile

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    Build one! I got a project r75 to get you started.

    My R60 is a true "bitsa"
    R50/5 frame from TX
    bottom end and tranny from SC
    top end from NE
    final drive from CA
    front end from AZ
    add some junk from mine and a friends garage.... shake it up and we got spark!
    All thanks to this site, IBMWR and FleaBay
  17. bpeckm

    bpeckm Grin!

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    .....................well..............????

    Have we seen a pitcher of said beast...???........point me at it !!!



    :super
  18. AlKay191

    AlKay191 Been here awhile

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    previous page just above my track mule
  19. Joe Bar

    Joe Bar Middle England

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    Nov 23, 2005
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    1,382
    Seen at this week's show in Cologne -

    [​IMG]

    Sorry about the quality of this one, seen on the Wudo stand, they've just started re-manufacture of the fairing, seat and rear sets.

    [​IMG]

    [​IMG]

    [​IMG]
  20. AlKay191

    AlKay191 Been here awhile

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    I'm sure I'm missing something........
    but what exectly makes this bike a Caferacer?