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Info RS250 MY1995

Discussion in 'Aprilia 250cc' started by Gert, Jan 23, 2019.

  1. Gert

    Gert Well-Known Member

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    Well, since this side of the forum is very quiet, perhaps I can add a little experience with my bike. Or must this thread into the project section? If so, feel free to move it.

    Somewhere in 2010 I bougth this Reggiani RS:

    rs250003.jpg

    Since the market was dying for two stroke bikes and two stroke like to be banned in Holland, I bought this bike for peanuts, knowing it is going te be an never ending project.

    Ofcourse my expectations came true: two stroke = oil:

    oliebende01.JPG

    and damage:

    zuiger01.JPG

    cil01.JPG
     
  2. Gert

    Gert Well-Known Member

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    Okay, rebuilded the engine, crank:

    kruk01.JPG

    Cougar red power valves:

    coug01.JPG

    Flowed crankcase, reed valves, etc:

    membr01.JPG

    membr03.JPG

    Conrod:

    rod01.JPG

    Renewed cilinders:

    cilnieuw.JPG

    And finish:

    final.JPG
     
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  3. Gert

    Gert Well-Known Member

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    Breaking in the engine and realizing power could be more, so installed an Ignitech:

    Ign01.JPG

    Made an wiring schedual:

    Ignitech250gert02.GIF

    Because it is Italian, you know something goes wrong! So because she did not start, after searching it appears that the wiring schedual from Aprilia was not correct. Pickup wiring was switched.... sigh. Anyway, swapping wires was enough to fire her up.


    finally Dyno:

    110719%20PS01.jpg

    Later more...
     
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  4. 2valve

    2valve Well-Known Member

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    My Bike:
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    Super cool looking guided missile you have there , well at'least in the first picture. That piston and bore look's a tad sad , is that metal swarf around the engine block ? , it look's to be every where. There are specialty places that can repair bores , wonder if it's saveable OR is it toast.
     
  5. 2valve

    2valve Well-Known Member

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    Well that was a fast engine build :idk:.
     
  6. Gert

    Gert Well-Known Member

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    Haha, very fast. Yes all this happened in the last eight years. But I never mentioned it here.:oops:
     
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  7. 2valve

    2valve Well-Known Member

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    Oh well , you informed us in the end. But for failing to keep us informed , you'll receive fifty lashes :lolsign:!.
    Well , you did your's in eight week's , my little Yamaha has taken a year to do , but getting there.I think my punishment will be severe for not informing the forum what i was up to :(.
     
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  8. Gert

    Gert Well-Known Member

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    Since power at high revs was very good, the engine suffered a powerloss at about 7.000 rpm. I know it is an two stroke, but, I reckon, it could be better.
    So I started (before somebody is giving hints, I started some years ago :) ) to look for some reasons to find out why.

    First checked everything with the carbs, but that did not help, fuel level, for example:

    carblinks.jpg

    Did not help. Ordered new Jet needles, Needle jets and Throttle valves. Became a bit better, but not as it should be.

    Ordered an Flo-commander: https://flo-commander.com/
    But since I was afraid to cut into my original airbox, I bought a spare one.
    In the spare one I noticed an "baffle" plate, between left and right carburator. Hmmm, what if?
    So I installed the original air box, with plate, et voilà, dip at 7.000 rpm gone.
    I notice she is suffering some top performance now, after 12.000 rpm, but I am happy with this set up.
     
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  9. Gert

    Gert Well-Known Member

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    Hmm, forgot to mention: somewhere after the first rebuild and not noticing well enough at the settings of the Ignitech software. There was a flag where it should not be (or vice versa), resulting in a (too) lean mixture....

    Result:
    plugrs.jpg

    And:

    Upward cilinder:
    zuigerstaande.jpg

    Forward cilinder:
    zuigerliggend01.jpg

    Lucky for me, no further damage... :oops:
     
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  10. Gert

    Gert Well-Known Member

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    Since it is an Italian design, it is nice, but the rest is bad.
    So, the headlight is awfully bad, it breaks inside and the reflector is slowly burning, through the years.

    I bought some broken spare headlights, took a paintstripper, heated the glass gently and opened the lamp.
    This is what I found:

    reflector.JPG

    Found me a company who could "repaint" the reflectors and put it back together.

    reflector01.jpg

    reflector02.jpg

    So now I have some spare headlight units on the shelf, always handy :)
     
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  11. Gert

    Gert Well-Known Member

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    Some overall pics:

    RS250fin01.jpg

    RS250fin02.jpg

    At the moment the bike suffers leaky front legs and a sticky caliper. Bought an rebuild kit at Powerhouse for the brakes.
    Disassemble was an disaster. The caliper bolts were to tight too loosen easily. Destroyed two bolts from one caliper, so I decided to get some help from a friend with an automotive company.
    He bored the bolts out and advised me to put the other caliper in the fridge at minus 18°C and try to loosen the bolts. Surprisingly enough, the bolts came pretty easy now???

    brakesRS250.jpg
     
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  12. Gert

    Gert Well-Known Member

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    Because of the leaking front legs (every year) I bought an conversion set via Ebay. It containes forks from an GSXR750 K4 with radial brakes.
    To be honest, I don't like the gold legs and the braking is not better than the stock brakes. So I decided to try to rebuild the stock forks, rebuild the calipers and go stock again.

    RS250K401.JPG

    Drove two years with this set, and no leaks. But hey, it isn't Italian :)
     
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  13. 2smokeRonin

    2smokeRonin Active Member

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    Interesting. You're going back to stock?
    Do the gsxr forks go into the rs250 tripple clamps? And is that the stock rs front wheel with the k4 forks?
     
  14. Gert

    Gert Well-Known Member

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    Yes, back to stock.
    Picked the Forks up last week from an spring-specialist. He polished the legs and installed SKF seals. Those seals are green (cross bike seals) and not black, but that does not bother me. I hope the legs are good now.

    The Suzuki forks are a direct fit. It is indeed the stock RS wheel.
    I bough it as an kit. I think they made some adapters for the calipers, to raise the caliper some mm's. And some spacers to position the wheel at the exact place.

    RS250K402.JPG

    Rebuilded forks:
    Fork%20RS%20Skf.JPG
     
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  15. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    Nice bike Gert. On another note, sorry about your emulsion tubes, they were sacrificed to the God of Medical Experiments along with the original four that Mr Grey sent me. The set that I sent back to him was the last four of his eight. I might be able to salvage one or two if you are still interested.
     
  16. 2smokeRonin

    2smokeRonin Active Member

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    Thanks for that. That's good info.
    Stock rebuilt forks look good.
     

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