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Supercharging

Discussion in 'The Garage' started by drewpy, Jan 8, 2016.

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  1. BBS360

    BBS360 XS400 Guru Top Contributor

    Now all you need to do is put some visible throttle plates up front for a proper hotrod bike. sucp_0904_02_z+1968_chevy_camaro_rs+blower.jpg
     
  2. drewpy

    drewpy Excess twin Top Contributor

    ha ha
     
  3. drewpy

    drewpy Excess twin Top Contributor

    managed to weld a temporary mount together in steel just to see what fits where etc etc.

    [​IMG]
    think i'm going with 60mm pulleys 1:1 ratio in order for the ribbed belt to follow the starter chain route.
    up and over 1.5" tube to the inlets .
    [​IMG]
    there's only 50mm gap between charger and cyl block, so inlet will start off going down into the starter motor area and up to the right side
    [​IMG]
    whilst changing over the oil fill casting, I noticed a nut missing off one of the gears
    [​IMG]
     
  4. BBS360

    BBS360 XS400 Guru Top Contributor

    Looks great.
    I can't quite visualize what you mean about the inlet routing.
    With the crank spinning counter-clockwise and a pulley between crank and the blower mounted with the pulley on the bottom your blower inlet will be the port facing the cylinders.
     
  5. drewpy

    drewpy Excess twin Top Contributor

    I'll check again, but it blows out the back when spun anticlockwise
     
  6. BBS360

    BBS360 XS400 Guru Top Contributor

    That's the setup used on the supercharged SR posted somewhere previously.

    Is that the plan? If there's any way to mount it pulley-up you could drastically simplify the inlet/outlet routing and fabrication.
     
  7. drewpy

    drewpy Excess twin Top Contributor

    the issue would be not enough volume in the plenum intake, it will work quite well this way and I'll use the tube to locate the upper mounts. I'm going to do it in steel first and get remade in Alloy or stainless later.
     
  8. BBS360

    BBS360 XS400 Guru Top Contributor

    Cool. :thumbsup:
    Always looking forward to progress on this one.

    The missing nut must a standard metric size?
     
  9. drewpy

    drewpy Excess twin Top Contributor

    no, but another forum member off the YOC has managed to source one from Germany.

    I'm rethinking this and I think I may run the charger horizontal, gives me more room for a plenum and kick the intake out the back. will have to use a jackshaft in the starter motor area. upgrade the chain to the crank (and the sprocket)

    will sacrifice the crank breather area and relocate it somewhere else welding in a spigot, inlet would have to go under the cross bar at the back

    thoughts?
     
  10. BBS360

    BBS360 XS400 Guru Top Contributor

    Sounds cool. Outlet up, into plenum, then horizontally straight into the cylinders?

    A jackshaft should fit nicely in the starter area. Custom fabbed mounts but everything on this is custom so no big deal. :)
    Probably could even reuse the starter chain and gear, just lockup the starter clutch so it drives all the time.
     
  11. drewpy

    drewpy Excess twin Top Contributor

    sorry just seen this. No they are standard pistons and bores
     
  12. drewpy

    drewpy Excess twin Top Contributor

    At an Impass ATM, i'm locating the charger on its side and need some one who can do CAD for a milling machine
    its a bracket to hold the supercharger to the top of the breather case with a hole to take an ally intake tube

    any takers?
     
  13. BBS360

    BBS360 XS400 Guru Top Contributor

    Wouldn't be able to start until sometime next week but I could give it a shot.
    Sounds like you're wanting to use the AMR intake flange mounts to mount the whole thing? Got a sketch and measurements? :)
     
  14. drewpy

    drewpy Excess twin Top Contributor

    yep in the vertical so it should be strong enough. I can also get a mount for the top so it would add to the strength.

    Give us the weekend to come up with something :thumbsup:
     
  15. Robsteeler66

    Robsteeler66 XS400 Addict

    Awesome! See, I disappear for a year, and look what happens! :rock:
     
  16. Thedoityourselfguy

    Thedoityourselfguy XS400 Enthusiast

    I can't wait to see this thing all done......we should have a race when we are finished!!
     
  17. Thedoityourselfguy

    Thedoityourselfguy XS400 Enthusiast

    whilst changing over the oil fill casting, I noticed a nut missing off one of the gears
    [​IMG][/QUOTE]
    Yes you will need both nuts to ride this......
     
  18. drewpy

    drewpy Excess twin Top Contributor

    I've sorted it. wierd size and thread too
     
  19. BBS360

    BBS360 XS400 Guru Top Contributor

    Back from the wilderness.
    I was looking at my motor and thinking, "why bother keeping the breather cover at all?"
    All options are open at this point.
    The mounting bracket can replace the breather cover entirely, meaning you can save 1-2" in height and have that much more room to work with for intake/plenum routing.
    You'd still want a breather tube but it could be rerouted out the side or back of the bracket.

    Food for thought.
     
  20. drewpy

    drewpy Excess twin Top Contributor

    that's what I was doing, tube at the side and fed to airfilter. done a rough sketch and dimensions, not sure if it would be easier to do it in 3 parts and by hand and them weld them all together? Just worried about warpage
     

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