Supercharged KTM LC8 motard build

Discussion in 'Some Assembly Required' started by OldDog, Nov 23, 2013.

  1. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

    Joined:
    Jul 5, 2005
    Oddometer:
    1,134
    Location:
    The other Center of the Universe: Bend, Oregon
    Sheeewt, that buzz saw looks just like the one I have mounted on the bumper of my Brumby. I found the correct part numbers for an LC8 Blower, just have to decide if its the 5 burner or 6 burner:evil:

    [​IMG]
    #61
  2. OldDog

    OldDog aka Hugh Jarse

    Joined:
    Feb 20, 2005
    Oddometer:
    4,836
    Location:
    Mudgee, Australia
    Dammit, they already make a blower setup for an LC8??? It looks a bit bulky though.....

    So, it's been a big week with some real life drama's happening which is going to slow this down a bit, however I've ordered a brand spanking new AMR500 and pulleys from this guy http://www.kemotorsport.com/ and it should be here this week.
    On top of that he's given me advice re: direction of rotation and I can build this going counter clockwise which will save a lot of extra fabrication.
    On top of that Pezz has put me onto a bloke in Inverell who's keen to do the fab work i need for the actual drive and mounts. That won't be until end of March or so, which gives me a chance to get the drawings done etc. I'll then take the bike up to him so he can get a good look and get started.
    #62
  3. OldDog

    OldDog aka Hugh Jarse

    Joined:
    Feb 20, 2005
    Oddometer:
    4,836
    Location:
    Mudgee, Australia
    Well i've been off the grid for a bit, but during that time the new blower and pulleys have turned up:wink:

    [​IMG]

    And i picked up a pair of Supermoto forks and shock off DRJoe, stll experimenting there but they look sexy eh?

    [​IMG]

    Soooo I've done some rough setting up to see how it will look

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    Intake will be in the space between the engine and the blower which will be a simple duct moulded out of fiberglass with a K&N pod filter. It will expel forward into the ducting which will go straight up and dissapear under the tank and into the airbox.

    In the meantime i've made up a dash and fitted the usual "streetfighter" twin headlights. At this point I have an electrical gremlin stopping the headlights and blinkers from working so will hit the manual in a tic and look at the wiring diagram.

    Still, I'm getting there slowly. At this point I have it slated to go up to Inverall in April to start the fabrication work so I have time to get everything else right.

    Oh and I'm short a left hand Brembo SM caliper, if anyone has one laying around.....

    Cheers
    #63
  4. bk brkr baker

    bk brkr baker Long timer

    Joined:
    Jul 19, 2006
    Oddometer:
    6,011
    Location:
    The Bluegrass
    Any motorcycle with a supercharger.....


    Too friggin cool , in my book.

    :clap
    #64
  5. DRjoe

    DRjoe Long timer

    Joined:
    Sep 6, 2007
    Oddometer:
    5,333
    Location:
    Sunshine coast qld
    so your not finished yet!

    hurry up will you
    #65
  6. OldDog

    OldDog aka Hugh Jarse

    Joined:
    Feb 20, 2005
    Oddometer:
    4,836
    Location:
    Mudgee, Australia
    Settle down there big fella! :lol3 The way things are going I reckon this will be ready for some serious fun by next summer, maybe around September.....say isn't that when the next Scrapheap ride is on?

    I managed to exorcise the electrical dmons from the wiring before I had to head back to work for the week, I should have headlights and blinkers next weekend so may even be able to take it for a ride, minus one caliper. I'm wondering how effective one caliper will be as both Joe and Snowhawk mention that they have converted to one caliper. I suppose with the standard master cylinder the brake would lock though?

    More food for thought
    #66
  7. bk brkr baker

    bk brkr baker Long timer

    Joined:
    Jul 19, 2006
    Oddometer:
    6,011
    Location:
    The Bluegrass
    If you use the MC from a dual disc bike to only operate one caliper, you need a lot of hand force as the working piston in a dual setup is larger than the piston in a single caliper system.
    You'll have a hard lever but, it won't put enough force in the system to stop easily.
    #67
  8. OldDog

    OldDog aka Hugh Jarse

    Joined:
    Feb 20, 2005
    Oddometer:
    4,836
    Location:
    Mudgee, Australia
    Ah ha, thanks for that bk, in that case I'll just use the single as a test setup to go around the block until a caliper turns up on ebay. I think with this much grunt, twin brakes just may be a smart idea :lol3
    #68
  9. dcmspikes

    dcmspikes Adventurer

    Joined:
    Dec 14, 2013
    Oddometer:
    31
    Location:
    costa mesa ca
    this is amazing. you guys are crazy in the best kind of way.
    #69
  10. stevh0

    stevh0 Super Retard.

    Joined:
    Sep 8, 2007
    Oddometer:
    1,550
    Location:
    Cape Town, ZA
    okay, now you REALLY have my attention.
    #70
  11. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

    Joined:
    Jul 5, 2005
    Oddometer:
    1,134
    Location:
    The other Center of the Universe: Bend, Oregon
    I use a MC off the 2005 or 2006 450SMR with single 4pot radial mount caliper.
    I believe it is a 16.4mm as opposed to the 18mm on the 990. Do I need to mount my RT caliper and give up the left so you got brakes to match your new power band?
    #71
  12. OldDog

    OldDog aka Hugh Jarse

    Joined:
    Feb 20, 2005
    Oddometer:
    4,836
    Location:
    Mudgee, Australia
    Ah yeah you mentioned that MC i forgot. What are your thoughts on the braking ability of the bike with just the one caliper? I've seen guys do it to their 950/990 adventures and they reckon its ok. When building my Ducati dirt bike I fitted a single caliper and 320mm Motard disc to it and that seemed okay. Mind you those are dirt orientated and this little beast is focussed mainly on the road.

    I dunno about that offer of the caliper on your bike though, I appreciate it, but hate the thought of someone pulling there gear apart. I'm wondering (i'd check myself but the bike is miles away) but couldn't a right hand caliper be used on the left side? The bleeder and hose inlet would be at opposite ends to the norm, but they'd still fit? Bearing in mind these are monobloc's versus the more common side mounting calipers.

    Hmmmmm:hmmmmm
    #72
  13. OldDog

    OldDog aka Hugh Jarse

    Joined:
    Feb 20, 2005
    Oddometer:
    4,836
    Location:
    Mudgee, Australia
    Well I can't recall the last time someone accused me of doing something sensible :lol3
    #73
  14. mousitsas

    mousitsas Long timer

    Joined:
    Oct 10, 2008
    Oddometer:
    3,006
    Location:
    Athens, Greece
    I think it will be adequate only in case you use top of the shelf 320mm or 330mm components inc another suitable master.
    Overall braking force will not be much different, but brake disc heat (and consequent brake force deterioration) will, so you have to choose wisely your parts. Maybe you could fit a single rim disc ala buell?
    #74
  15. snowhawk jockey

    snowhawk jockey Slack Jaw Gaper

    Joined:
    Jul 5, 2005
    Oddometer:
    1,134
    Location:
    The other Center of the Universe: Bend, Oregon
    The traction you have on the 17" front will make double discs much mo betta. I can lock my front on dry pavement with the 19", I dont think one disc can lock a 17".
    #75
  16. Tommy_J

    Tommy_J won't drive a car

    Joined:
    Apr 1, 2007
    Oddometer:
    338
    Location:
    So Cal
    Hi I just came across your build. I LOVE the madness of it!

    Let me know if I can help with any info on getting the carbs to behave, or anything else.

    .
    #76
  17. duxrneet

    duxrneet Been here awhile

    Joined:
    Jul 20, 2009
    Oddometer:
    675
    Location:
    Melbourne, AUS
    Just the right man to pop into this thread! Love your work, sir. :D
    #77
  18. mousitsas

    mousitsas Long timer

    Joined:
    Oct 10, 2008
    Oddometer:
    3,006
    Location:
    Athens, Greece
    However, a 17 wheel with a single disc brakes 13% better than a 21 wheel with a single disc :lol3
    #78
  19. OldDog

    OldDog aka Hugh Jarse

    Joined:
    Feb 20, 2005
    Oddometer:
    4,836
    Location:
    Mudgee, Australia
    Hey Tommy, Thanks for dropping by:D I originally read your turbo build thread which is mostly to blame for me building this. I did start out with a 950S motor which I was going to use but lucked onto this injected one which I hope will be easier to tune. My thoughts are to get the TunECU software and cable and play from there, however an O2 sensor might be a good investment too.
    I'm busy reading a lot of books on supercharger setup as I've never done a blow through setup before. At this stage I'm guessing about a 2 litre airbox will be needed, I was going to get one similar to the standard on fabed up but i don't want the carbs in the airbox like standard so will be going back to your thread and looking at your setup again. Biggest trick will be holding it on the engine!

    How has your bike performed with the boost, any problems? Oh that reminds me, how much boost are you using? I'm thinking 8 to 10 will be enough on a stock engine?

    Cheers
    Bill
    #79
  20. sakurama

    sakurama on an endless build

    Joined:
    Oct 20, 2004
    Oddometer:
    1,495
    Location:
    NYC & PDX
    Umm, wow. I truly love the lunacy of this. Gotta add another subscription for this.

    As for your brakes I'd strongly consider two if the bike will spend more than half the time on tarmac. I think my single rotor with 4-piston Motomaster and radial Brembo master has great feel and decent power (same as stock but better feel) but your kinda power will be wasted on dirt (we can help with that :evil) so maybe keep the pair.

    Another thing that might help: when Chris built his Rotax/Ducati singles he did an electric water pump which worked great. That might allow you to take the drive from that shaft and simplify.

    Looking forward to following along.

    Gregor
    #80