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Project ZXR250A - The Wasp.

Discussion in 'Your 250cc Projects' started by Murdo, Aug 14, 2018.

  1. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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  2. Frankster

    Frankster See the World before you leave it Staff Member Premium Member Ride and Events Crew

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    Thanks Chief. I like this one...
    Wasp Logo.jpg
     
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  3. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    hammer.jpg
    ant_man_and_the_wasp_poster_by_gasa979-dbr3br0.png.jpg
     
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  4. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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  5. Andych

    Andych Well-Known Member Premium Member

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  6. Frankster

    Frankster See the World before you leave it Staff Member Premium Member Ride and Events Crew

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    What have you heard?
     
  7. Andych

    Andych Well-Known Member Premium Member

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    I am just looking at the pictures above and the Wasp has a nice... umm ahh... shapely suit :)
    With boobs :dance2:
     
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  8. Frankster

    Frankster See the World before you leave it Staff Member Premium Member Ride and Events Crew

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    I know, I was just trying (& failing) to be funny too.
     
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  9. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    Not the last time I saw him
     
  10. Frankster

    Frankster See the World before you leave it Staff Member Premium Member Ride and Events Crew

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  11. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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  12. Tigger996

    Tigger996 Active Member Premium Member Contributing Member

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    Do you really need a wheelie bar? I am running 14.7 for the quarter(FZR250 3LN1) and only suffer a small wobble from the back end (rev to 16K feed in clutch until moving then drop it). My 998S (11.01 quarter) is just on the limit running without one.
     
  13. Frankster

    Frankster See the World before you leave it Staff Member Premium Member Ride and Events Crew

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    We'll run the bike without the bars until it's running right and then see what affect having the bars has. I've managed a PB of 1.96 for the 60ft, so if we can get that down to 1.8 it will be worth the effort.
     
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  14. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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    Time to start on the 'sting'.
    I needed to make a plate to hold the exhaust pipes to the head. I bought a piece of 50x5mm flat bar and using the lathe at about 50rpm and a 32mm hole saw (with plenty of coolant) bored the four holes for the pipes.
    Salt bike built 005.jpg
    Then using original pipes clamped to the plate I drilled the pilot holes using an 8mm bolt that had been bored centre for a 3mm drill.
    Salt bike built 007.jpg
    This gave the exact centre for final drilling to 8mm to match the original where I could put a bolt in to hold and drill the remaining holes.
    Salt bike built 009.jpg
    Loverly fit.
    Salt bike built 013.jpg
     
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  15. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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    The next step was to buy some mandrel bends from the local exhaust shop.
    First I heated and expanded the larger tube to fit two of the smaller ones.
    Salt bike 001.jpg
    Then with some cutting by plasma and angle grinder fitted the tubes to plate and tacked together.
    Salt bike 003.jpg
    After fully welding all tubes I faced the plate on belt sander and rotary burred the insides to smooth the gas flow.
    Salt bike 015.jpg
    Looking good so far.
    Salt bike 017.jpg
     
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  16. Andych

    Andych Well-Known Member Premium Member

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    Very nice, I do see the words “Salt Bike” on the pics..... could some forced induction be heading towards the Wasp for a run on the Salt in 2019?


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  17. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Yeah those header pipe's look like they're made out of steam pipe to me too
    I had noticed that @Murdo or @Frankster hadn't cleaned up and painted the exhaust system

    Salt bike 015.jpg
     
  18. Frankster

    Frankster See the World before you leave it Staff Member Premium Member Ride and Events Crew

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    Well, 2019 DLRA Speed Week is less than 3 months away, so even with the skills and engineering prowess of @Murdo, it seems unlikely...2020 on the other hand would seem like a logical target. That would give us plenty of time to test and have a spare engine (or two) and collect all the necessary extras for a trip to Lake Gardner. You never know what we're up to, so you'll just have to watch this space.
     
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  19. Andych

    Andych Well-Known Member Premium Member

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    Hmmm if I were a betting man ( I’m not because I have another addiction - Bikes) I would suggest it will be a Turbo’d engine with a slightly lower compression to minimize detonation and a 32mm downdraft Webber.
    No point in an inter cooler as the salt would play havoc with it.
    Then again I could be completely wrong too.
    I guess we will have to watch this space



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  20. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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    I'm saying nowt, but happy to show what I'm doing.
    Definite NO to the Weber, think Skinner's Union.
    The fuel cap I had ordered arrived so today I started on the tank.
    Fuel tank 002.jpg

    The rules say a minimum of 5 litres and the space behind the steering stem is about right. I used a piece of alloy welding wire and bent to the shape, then rounded this up to get a measurable size and with this size and 150mm high should give a bit over the 5Lt.
    Salt bike built 003.jpg Salt bike built 004.jpg

    I used some empty cat food box to get the exact shape then transfered to 2mm alloy sheet.
    Fuel tank 005.jpg Fuel tank 007.jpg

    I left a 6mm edge to fold up, welded the corners and sanded smooth. Then with a piece of 1.6mm alloy I folded the tank sides.
    Fuel tank 008.jpg

    Just got it tacked together and the hose on my TIG split, so no more until it's repaired.
     
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