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Hansol

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Posts posted by Hansol

    Peter's GT40

    in Våra GT40 Bilar

    Posted

    Gnatar på i att göra listan allt för att späda ut det tråkiga glasfiber jobbet som
    aldrig verkar se sin ände.

    Har fixat till oljetank samt slängt ihop ett tråg







    Hittade en 3 stage pump på Ebay


    GT40 replikabygge med Svensk design

    in Våra GT40 Bilar

    Posted

    SwedishGT40 wrote:


    EDIT: Bygget har tagit en otäck vändning och GT Forte har återbetalat pengarna för chassiet utan information om varför.
    Dom svarar inte på mail(sedan flera veckor tillbaka) och jag är nu lite strandsatt. Jag vill svetsa mitt eget chassi, men alla företag som är kvar förutom GT Forte levererar bara färdiga chassin...

    Hjälp här någon???


    Titta på denna tråd , han har byggt sitt chassie själv och bidrar med ritningar, om jag inte helt missminner mig finns det någon i detta forum som byggt efter dessa ritningar.

    http://www.gt40s.com/forum/gt40-build-logs/32106-riviera-scratchbuilt-gt40.html

    h//Peter

    Artos SGT40

    in Våra GT40 Bilar

    Posted

    Tycker att ditt chassi ser riktigt bra ut , att man får ändra "some minor"
    skulle jag lätt kunna leva med alla dagar i veckan.

    Jämför man med skrotet jag har lever du en lyxtillvaro vill jag lova.

    // Peter

    Peter's GT40

    in Våra GT40 Bilar

    Posted

    Har roat mig lite med att försöka få ihop alla längder på avgassystemet
    tog hjälp av programmet Pipemax och jösses vad med data man kan få


    *************************** Metric Units ***************************
    Cylinder Ignition Interval = 90 degrees 7000 RPM Hertz frequency = 58.3 Hz
    Target EGT= 794.8 degrees C at end of 4 second 600 RPM/Sec Dyno accel. test
    3.9477 Liters Exhaust System operating RPM Range from 5000 to 7500 RPM

    --- Single Primary Pipe Specs --- ( Low to Mid-Range RPM Torque and HP )
    Diameter= 32.703 to 35.878 Total Length= 742.8 to 808.5 MM long
    --- 2-Step Primary Pipe Specs --- ( Low to Mid-Range RPM Torque and HP )
    1st Step Dia. MM= 32.703 Length= 371.4 to 404.3
    2nd Step Dia. MM= 35.878 Length= 371.4 to 404.3
    --- 3-Step Primary Pipe Specs --- ( Low to Mid-Range Torque and Hi RPM HP )
    1st Step Dia. MM= 32.703 Length= 371.4 to 404.3
    2nd Step Dia. MM= 35.878 Length= 185.7 to 202.1
    3rd Step Dia. MM= 39.053 Length= 185.7 to 202.1

    --- Single Primary Pipe Specs --- ( Mid-Range TQ to Higher RPM Horsepower )
    Diameter= 37.783 to 40.958 Total Length= 742.8 to 808.5 MM long
    --- 2-Step Primary Pipe Specs --- ( Mid-Range TQ to Higher RPM Horsepower )
    1st Step Dia. MM= 37.783 Length= 247.6 to 280.5
    2nd Step Dia. MM= 40.958 Length= 495.2 to 528.1
    --- 3-Step Primary Pipe Specs --- ( Higher RPM Horsepower, possible TQ loss )
    1st Step Dia. MM= 37.783 Length= 247.6 to 280.5
    2nd Step Dia. MM= 40.958 Length= 247.6 to 264.0
    3rd Step Dia. MM= 44.133 Length= 247.6 to 264.0

    --- Conventional Straight Tube Collector Specs --- (Lengths in MilliMeters)
    ( TQ ) Diameter= 56.830 to 63.180 Best Length= 432.0 and also 864.0 MM
    ( HP ) Diameter= 63.180 to 75.880 Best Length= 432.0 and also 216.0 MM
    --- Megaphone Collector Specs ---( Diffuser or Diverging Cone Shape )---
    ( TQ ) Diameter= 37.780 taper to 63.180 Best Length= 432.0 or 864.0 MM
    ( HP ) Diameter= 44.130 taper to 69.530 Best Length= 432.0 or 864.0 MM

    H-Pipe= 432.01 X-Pipe= 1728.04 distance behind end of Primary Tube ends

    -- Total Exhaust System Tuned Lengths (Primary ends to TailPipe end) --
    Best HP/TQ Tuned Collector Lengths= 432.0 , 864.0 , 1728.0 , 3456.1 MM long
    Worst HP/TQ Loss Collector Lengths= 648.0 , 1296.0 , 2592.1 , 5184.1 MM long
    Note=> measured from where the Primary Pipes end inside the Collector to
    the point the Collector or tailpipe exits into the atmosphere.

    Note-> all Pipe Diameters are OD and based-off 1.588 MM inch Pipe thickness

    ---- Primary Pipe's Harmonics ---- ( Lengths in MilliMeters )
    1st Harmonic = 3279.5 MM long ... typically never used
    2nd Harmonic = 1242.3 MM long ... longest recommended
    3rd Harmonic = 742.8 MM long ... highly recommended , best Torque Curve
    4th Harmonic = 517.0 MM long ... shortest recommended
    5th Harmonic = 388.3 MM long ... typically never used
    6th Harmonic = 305.2 MM long ... typically never used
    7th Harmonic = 247.1 MM long ... typically never used
    8th Harmonic = 204.2 MM long ... typically never used

    ---- Collector's Harmonics (includes Intermediate, Muffler , TailPipe) ----
    1st Harmonic = 3456.1 MM long ... longest with Mufflers and TailPipes
    2nd Harmonic = 1728.0 MM long ... longest recommended with Mufflers
    3rd Harmonic = 864.0 MM long ... more bottom-end Torque
    4th Harmonic = 432.0 MM long ... highly recommended , best Torque Curve
    5th Harmonic = 216.0 MM long ... reduced Torque , more top-end HP sometimes
    6th Harmonic = 108.0 MM long ... reduced Torque , not recommended

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