Rotax powered Scorpa solutions??

Discussion in 'Trials' started by Mr. BigWheel, Nov 14, 2013.

  1. Mr. BigWheel

    Mr. BigWheel b00b

    Joined:
    Mar 4, 2009
    Oddometer:
    759
    Location:
    South central Alaska
    I have a 1999 Scorpa Easy in Washington. I use it once a year to ride at the Endurocross races in Everett.

    It has the Rotax 250, which is reportedly a decent engine, with the exception of the stator having a high mortality rate. I've had the bike for a number of years and I'm at a fork in the road with it.

    Should I try to invest some money into it (stator rewind BEFORE it fails/new piston and rings/general upgrades to keep it ridable) OR should I kick it to the curb in an ignominious fashion after it has provided years of reliable service?

    I would like to participate in some of the Puget Sound Trialers events and learn what a trial is really like and then possibly use that to help trials grow in Alaska.

    Am I asking too much out of a Clinton-era machine?

    Regards,

    Mr. BigWheel
    #1
  2. Rockcat

    Rockcat LDA

    Joined:
    Oct 2, 2005
    Oddometer:
    383
    Location:
    Portland, OR
    Keeping it running will keep any value it has.
    #2
  3. Mr. BigWheel

    Mr. BigWheel b00b

    Joined:
    Mar 4, 2009
    Oddometer:
    759
    Location:
    South central Alaska
    The stator seems to be a weak (and expensive) point.

    Does anyone know of a shop in the U.S. that can perform a rewind/rebuild on the Rotax's stator? The threads that I have found regarding the subject always refer to shops in England.

    A shop would also want to know what values to rebuild the stator to. But Scorpas didn't come with any sort of manuals and there is very little online about them.

    I think the failed stator is the primary reason that Scorpas of this vintage gets parted out.
    #3
  4. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    3,389
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    nm
    I assume you have spoken to Mike Komer at the Tryals shop.
    #4
  5. grizzzly

    grizzzly The Pre-Banned Version

    Joined:
    Apr 29, 2007
    Oddometer:
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    Location:
    socorro NM 505-five five zero-2583
    i believe this is the guy i got the stator for my 1999 280 easy from
    #5
  6. Mr. BigWheel

    Mr. BigWheel b00b

    Joined:
    Mar 4, 2009
    Oddometer:
    759
    Location:
    South central Alaska
    I did speak to Mike but that was nearly two years ago. Unless I am mixing my facts up, he has found someone in Canada who can get the job done.

    As I recall, the price was a large percentage of the bike's value. It hasn't appreciated in value in that time but there are some items that could stand attention (ie: linkage, fresh top end).

    I'm just having a hard time deciding if there is any logic in continuing to invest in that machine. But mostly, I'm hoping that someone has a cheap idea to fix the stator before it goes out.
    #6
  7. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    3,389
    Location:
    nm
    So , the stator is working now and you are worried it will go out? The only cheap prevention would be go ahead and rewind it yourself.
    #7
  8. lamotovita

    lamotovita Ageing Adventurer

    Joined:
    Oct 5, 2007
    Oddometer:
    1,674
    Location:
    WA/AZ, USA
    It won't cost you anything to not fix something that's not broken.

    Ride, and maintain, the Scorpa until you're ready to buy a newer bike.
    #8
  9. val4215

    val4215 Adventurer

    Joined:
    Jul 29, 2009
    Oddometer:
    48
    #9
  10. grizzzly

    grizzzly The Pre-Banned Version

    Joined:
    Apr 29, 2007
    Oddometer:
    3,477
    Location:
    socorro NM 505-five five zero-2583
    <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:punctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:DontVertAlignCellWithSp/> <w:DontBreakConstrainedForcedTables/> <w:DontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math"/> <m:brkBin m:val="before"/> <m:brkBinSub m:val="--"/> <m:smallFrac m:val="off"/> <m:dispDef/> <m:lMargin m:val="0"/> <m:rMargin m:val="0"/> <m:defJc m:val="centerGroup"/> <m:wrapIndent m:val="1440"/> <m:intLim m:val="subSup"/> <m:naryLim m:val="undOvr"/> </m:mathPr></w:WordDocument> </xml><![endif]--> The problem with this stator is that the wire is a very small diameter and very brittle, Ricky stator and the guy they recommended wouldn’t touch it,
    My understanding is that the guy in Canada re-engineered it to use a larger wire.
    I think it was only 1 or 2 hundred dollars (I am thinking $125 but not sure) I put the stator in the bike and rode it around some the stator seems to work fine
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    #10
  11. Mr. BigWheel

    Mr. BigWheel b00b

    Joined:
    Mar 4, 2009
    Oddometer:
    759
    Location:
    South central Alaska
    I know that it sounds like paranoia; to be worried about a stator that hasn't failed yet. But I do have some reasons:

    1) The sister bike that was imported to Alaska at the same as mine had it's stator fail and the owner sold it as a box of parts. A local shop owner/mechanic bought it for $500 and spent $600 to replace the stator. He is WAY more knowledgable and resourceful than I am.

    2) Nearly every post I have found about the Rotax-powered Scorpas is a discussion about the failure of that bike's stator and how to repair it. Most of these posts are on British trials sites, since there weren't many of these bikes imported to the US.

    If I can get ahead of this issue at a reasonable cost then I would gladly keep the bike. Everything else that needs repair is within my capabilities. I can barely tie my own shoelaces, so I think that I will have to defer to someone else to rewind the stator.

    $125 is quite reasonable, so I'll give Mike a call since I need some more parts from him anyway. I hope that figure is at least in the ballpark.
    #11
  12. lamotovita

    lamotovita Ageing Adventurer

    Joined:
    Oct 5, 2007
    Oddometer:
    1,674
    Location:
    WA/AZ, USA
    If your stator has survived well into it's second decade I would not touch it!
    My motto regarding motorcycle modifications, which I assure you I learned the hard way, is "If you don't f... with it, you won't make it any worse".
    #12
  13. grizzzly

    grizzzly The Pre-Banned Version

    Joined:
    Apr 29, 2007
    Oddometer:
    3,477
    Location:
    socorro NM 505-five five zero-2583
    if it isn't broke don't fix it until it is:deal
    #13
  14. Dexter2811

    Dexter2811 Been here awhile

    Joined:
    Mar 13, 2012
    Oddometer:
    303
    Location:
    Buenos Aires, ARG.
    ^ this

    In the case the stator fails you can always rewind it by yourself, there are almost no secrets in the process, get the same gauge cable, grab pen and paper, take note of how many turns each pole has and its direction (better make a drawing) solder where needed and put toghether. Almost no tools needed, just patience and care not to break the cable's insulation coating.

    Sent from my LG-E612g using Tapatalk
    #14
  15. lineaway

    lineaway Long timer

    Joined:
    Oct 1, 2011
    Oddometer:
    3,389
    Location:
    nm
    #15
  16. PSchrauber

    PSchrauber Been here awhile

    Joined:
    Jan 3, 2011
    Oddometer:
    885
    Location:
    Summer: Kemiö, Finland; Winter: North Germany
    Get a new ignition, Powerdynamo have them as electronic ignition with an generator in their inventory for the Scorpa when I looked up right and if not they will make one for you. They can custom build nearly every ignition you want.

    A small German company so you will get very good craftsmanship and something that is really working and reliable.

    http://www.powerdynamo.biz/eng/systems/lists/overview.php
    #16
  17. motobene

    motobene Motoing for 44 years

    Joined:
    Mar 9, 2013
    Oddometer:
    1,793
    Location:
    Wichita Mountains SW Oklahoma
    I had the black and yellow Scorpa with the reed valve Rotax 250 engine. The bike was a bit heavy but I really liked it. A solid ride.

    I didn't have stator problems. I recall retarding the timing for mud riding, so I was in there, several times, that means I did my usual things for preventing problems. If a stator is delicate, corrosion is likely a big factor.

    If I can get to a magneto cavity and stator/flywheel early enough, I remove the flywheel, clean everything, and then use clear spray lacquer to seal everything up to block off corrosion. Additionally, or separately, I
    spray down the whole mess with solvent-like semi-lubricants like WD-40 or other spray oil before slapping the cover on. If water does get in there the solvents greatly reduce the potential for corrosion.
    #17
  18. Rockcat

    Rockcat LDA

    Joined:
    Oct 2, 2005
    Oddometer:
    383
    Location:
    Portland, OR

    I've had good luck with their products. If there is a problem, they take care of it.
    #18
  19. gmac

    gmac Adventurer

    Joined:
    Jun 6, 2007
    Oddometer:
    65
    Location:
    British Columbia Canada
    If the stators are a known problem I'd be inclined to get on fleebay or whatever and collect a few "failed" stators for the price of shipping, then do the repair yourself on the cheap to the spares. Meanwhile keep riding and assume the best.

    I've owned several CanAm's - trials and enduro's that used the Rotax engine and found them pretty much bulletproof. Never encountered a stator failure. Maybe some of these people could help, despite not being Scorpa;

    http://www.vintageparts4u.com/links.html

    I'd hang on to the bike till it dropped!

    Cheers Garry
    #19
  20. Mr. BigWheel

    Mr. BigWheel b00b

    Joined:
    Mar 4, 2009
    Oddometer:
    759
    Location:
    South central Alaska
    gmac,

    That is an excellent idea. However, I've been looking at ebay for years without any luck. The scarcity of the Scorpas in North America probably has a lot to do with that. I guess I'll try to pay more attention and set up some bots to do the work for me.

    I've emailed Powerdynamo and will hope for something positive from them.

    Thanks for the links guys.
    #20