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Thread: ESE's works engine tuner

  1. #33781
    Join Date
    27th October 2013 - 08:53
    Bike
    variety
    Location
    usa
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    942
    did you guys see this? supposedly a sucessful way to weld 7075. now where the hell do i buy the filler rods

    https://www.repairerdrivennews.com/2...7075-aluminum/

  2. #33782
    Join Date
    22nd November 2013 - 16:32
    Bike
    STRIKE trike & KTM300 EXC TPI
    Location
    Perth, Western Australia
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    878
    How things change with time.

    Central spark plugs....gone.

    Tight squish....gone

    Click image for larger version. 

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    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  3. #33783
    Join Date
    23rd March 2015 - 21:24
    Bike
    Conti RX356 V3
    Location
    Germany
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    88
    Quote Originally Posted by dutchpower View Post
    Copy and scale the bidalot 50 cc exh. tunnel
    Later 193 deg exh.duration ( Green on the dyno grafiek )
    the Bidalot does a lot of things right...great cylinder out of the box.

  4. #33784
    Join Date
    3rd August 2012 - 02:39
    Bike
    yzf 250
    Location
    holland
    Posts
    124
    Got that cil.from 19 hp to 22.7 hp changing exh.tunnel and new pipe

  5. #33785
    Join Date
    12th March 2010 - 16:56
    Bike
    TT500 F9 Kawasaki EFI
    Location
    Hamilton New Zealand
    Posts
    2,764
    Quote Originally Posted by ken seeber View Post
    How things change with time.

    Central spark plugs....gone.

    Tight squish....gone

    Click image for larger version. 

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    Ok, there is a bit missing.

  6. #33786
    Join Date
    22nd September 2012 - 16:31
    Bike
    1995 kx 125
    Location
    usa
    Posts
    72
    i figured results be different with a stock cylinder.
    19 to 22.7 ? i thought you started at 23.3 or something.

  7. #33787
    Join Date
    23rd March 2015 - 21:24
    Bike
    Conti RX356 V3
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    Germany
    Posts
    88
    he's likely talking about the Bidalot 50cc cylinder (at least that one has ~19 HP stock).

  8. #33788
    Join Date
    3rd August 2012 - 02:39
    Bike
    yzf 250
    Location
    holland
    Posts
    124
    tdc211 ( Got that cil.from 19 hp to 22.7 hp changing exh.tunnel and new pipe )


    Last post is from Bidalot 50cc cil.

  9. #33789
    Join Date
    10th February 2005 - 20:25
    Bike
    1944 RE 1
    Location
    Auckland, New Zealand.
    Posts
    2,243
    Quote Originally Posted by Flettner View Post
    Ok, there is a bit missing.
    Yes Ken, some info missing!
    Strokers Galore!

  10. #33790
    Join Date
    22nd September 2012 - 16:31
    Bike
    1995 kx 125
    Location
    usa
    Posts
    72
    Quote Originally Posted by dutchpower View Post
    tdc211 ( Got that cil.from 19 hp to 22.7 hp changing exh.tunnel and new pipe )


    Last post is from Bidalot 50cc cil.
    22.7 out of a 50? At what rpm?

  11. #33791
    Join Date
    23rd March 2015 - 21:24
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    Conti RX356 V3
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    Germany
    Posts
    88
    Standard (incl. their exhaust) they make ~18-19 HP peak at ~13.500 1/min.

    I'll start dynoing mine on Saturday, also testing a much shorter exhaust since I think the layout must have massive reserves reg power if it makes 19 HP at such "low" revs.

  12. #33792
    Join Date
    3rd August 2012 - 02:39
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    yzf 250
    Location
    holland
    Posts
    124
    Kreidler Rotary
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  13. #33793
    Join Date
    22nd September 2012 - 16:31
    Bike
    1995 kx 125
    Location
    usa
    Posts
    72
    Quote Originally Posted by dutchpower View Post
    Kreidler Rotary
    i see, that is some power

  14. #33794
    Join Date
    25th March 2004 - 17:22
    Bike
    RZ496/Street 765RS/GasGas/ etc etc
    Location
    Wellington. . ok the hutt
    Posts
    20,500
    Blog Entries
    2
    And some revs. Sheesh, I spent so much time with clearly a false rev ceiling based on RG50 in the 90s much past 12,000 killing cranks. I thought 13-14 was getting up there.
    Don't you look at my accountant.
    He's the only one I've got.

  15. #33795
    Join Date
    23rd March 2015 - 21:24
    Bike
    Conti RX356 V3
    Location
    Germany
    Posts
    88
    The modern cranks will last 40-50h on a 50cc with roughly 18 HP with overrev up to 14.000 1/min under racing condition...

    We won that race with a 20h old crank 😁 https://youtu.be/KR-R6G76_i4

    @dutchpower: care to share the changes in detail (exhaust channel and exhaust measurements)?

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