Willkommen! Melden Sie sich an oder registrieren Sie sich.

Um schreiben oder kommentieren zu können, benötigen Sie ein Benutzerkonto.

Anmelden - oder - Benutzerkonto erstellen

Roadster 800 carburattors Vergaser


Willkommen in Deutschlands aktiver, kostenloser Motorrad-Community!

In diesem Motorradforum findest du eine große Auswahl rund um das Thema Motorrad, über unsere gemeinsame Ausfahrten, Treffen, News, Stammtische und mehr.

Seit 2003 treffen sich hier viele nette Leute im gesamten deutschsprachigen und europäischen Raum zum Austausch und für gemeinsame Unternehmungen.


Ob Anfänger, Profi oder einfach nur motorradbegeisterte Sozia, ob Racer, Tourer, Chopper- oder Cruiserfan , ganz egal, hier ist jeder willkommen!

Ohne Verein, ohne Hierarchie ist man hier gleich "drin" und mit dabei.


Auch wenn du ein Forum suchst in dem es nicht nur um das Thema Motorrad geht bist du hier 100% richtig.

Hier auf der Startseite wird dir als unregistriertem Gast leider nur eine kleine Auswahl unserer Themen angezeigt, um alles sehen zu können registriere dich bitte kostenlos und unverbindlich mit deiner E-Mail-Adresse und lege dir einen Spitznamen/Nick zu!


Wir werden dich herzlich in der FREEBIKER.COM - Familie willkommen heißen und freuen uns auf Dich.

    Good evening Sachs-riders


    Now i want to resolve a delicate problem: carburattors.
    Mikuni carburattors are made under Solex licence.... so they are perfect like every french product...........(don't kill me, it was a joke!).............
    I made a pdf of different ajustments used with 805cc V2 Suzuki.
    http://img26.imageshack.us/img…sachs02carburationim2.pdf
    Because i want to increase performance (in france, without tûv).
    But first, it seems there is a problem with my first Sachs:
    under 3000 rpm (without choke) : horrible sensations: hésitations between one or two cylinders. (with choke, no problem...)
    over 400 rpm: a shoot in your ass (Sorry! it's a bad translation of french expression:"coup de pied au cul" used by all french bikers.
    When i found my bike, it was five years old with only 1500 kms! So perhaps one carburator is dirty.
    Did anywhone meet this problem?
    Thank you.


    Good night


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Hello Inspecteur Clouseau,
    your PDF is again a sensation.
    Sorry, i have no helpful answer for your delicate problem, but perhaps it´s only a dirty hole in the screw for gas-mix. Whitch choke it comes a fat mixture in the carburs. I know a similar problem on my sachs. The ringside on the back aircleaner was not accurate tight/solid. It´s not easy to move correct this ring. One bottle later of good „Bordeaux“ the fingers can reach the screw from the ring much better. With choke it was o.k., but without choke, one Zylinder has not the right pleasure.
    Only another question. Is a broken diaphragm a mostly problem on the carburs?


    V2-regards from Berlin to Toulouse
    stan

    First, for good investigation, i need to disassemble!
    so you can discover my high-tech:
    [IMG]http://img27.imageshack.us/img27/2070/img0429rm0.th.jpg[/IMG]
    And now: SACHS SECRETS....
    Achtung! wrong informations in Sachs bible! (reparaturanleitung)
    Carburetors useThrottle valve Nr 115. Nr 110 is a mistake!
    [IMG]http://img24.imageshack.us/img24/2348/img0853wm7.th.jpg[/IMG]
    And now: THE REAL SECRET!!!!!
    [IMG]http://img22.imageshack.us/img22/7955/img0865dy2.th.jpg[/IMG]
    Sachs Roadster 800 use minimized orifice of piston valve!!! 2 mm!
    NEVER USED BY SUZ!!! the other parts came from VX.
    Front carb: 2.3 mm
    rear carb 2.5 mm
    This choice is made for Euro 1 and TUV! No pollution for idle and low engine speed... But you destroy engine!!! ? under 4000 rpm
    So you can find first modification of my project:
    http://img4.imageshack.us/img4/2239/sachs02acarburation.pdf


    The whole story: http://profile.imageshack.us/u…rateurs/22/img0861nq5.jpg


    Good evening


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von runinfrance ()

    Zitat

    Original von mikosch
    Only another question. Is a broken diaphragm a mostly problem on the carburs?


    Sorry for this belated answer.
    Broken diaphragm is THE ONLY ONE problem (Solex/Mikuni) with respected engines.
    [IMG]http://img12.imageshack.us/img12/4932/img0869yk8.th.jpg[/IMG]
    [IMG]http://img12.imageshack.us/img12/2126/img0868dq7.th.jpg[/IMG]
    Every year: control... and repair.. (Sysiphus...)


    Good night


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Zitat Pierre: Broken diaphragm is THE ONLY ONE problem. Fin


    Really control every year the diaphragm? It´s a big sisiphys.
    But which are the signs and reference of a defekt membrane?
    Is it difficult to change the 2 parts? And you are right. Remove the stupid Philips-screws and take better inbus-screws.
    We must find for the Suzuki-shop a part-nr. for the diaphragm/membran.
    Is the inside-carburation not from the VS800GL? Hmm... will see it in your other tread.


    swinging V2-regards
    stan

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von mikosch ()

    hello


    you pay a new membran (115/141 euros...)
    or you choose my tools:
    [IMG]http://img13.imageshack.us/img13/7206/img0870om4.th.jpg[/IMG]
    And you work like an old sailor:
    [IMG]http://img11.imageshack.us/img11/7223/img0871ba0.th.jpg[/IMG]
    [IMG]http://img10.imageshack.us/img10/1741/img0872wq8.th.jpg[/IMG]
    [IMG]http://img7.imageshack.us/img7/9852/img0873xp0.th.jpg[/IMG]
    [IMG]http://img5.imageshack.us/img5/4942/img0874gk1.th.jpg[/IMG]
    [IMG]http://img27.imageshack.us/img27/4236/img0876bd3.th.jpg[/IMG]
    Now you can verify next year.
    You close our chambers with good parts:
    [IMG]http://img23.imageshack.us/img23/2875/img0854mh6.th.jpg[/IMG]
    Next year, you can verify with carbs on the bike.
    You just verify synchronization.
    I used this method during 100 000 kms with a VX SUZ...


    Good night


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Hello


    Yesterday, i proceed to disassembling of rear carburetor.
    Again, two surprises:
    - Orifice of piston valve is smaller 1.5mm. Suzuki: 2.5mm. Dynojet 3.3mm!!
    [IMG]http://img8.imageshack.us/img8/443/img0893d.th.jpg[/IMG]
    - Needle position is 5F-2 (poor). Suzuki: 5F-3. Dynojet 5H-3 (too rich)
    [IMG]http://img23.imageshack.us/img23/3407/img0903g.th.jpg[/IMG]
    We find this contradiction in Sachs documentation:
    [IMG]http://img27.imageshack.us/img27/7671/img0907l.th.jpg[/IMG]
    [IMG]http://img21.imageshack.us/img21/1432/img0905.th.jpg[/IMG]
    So i make my choice
    - orifice 2.5 for front carb and 2.8 for rear carb.
    - needle. front 5D-3. rear 5F-3.
    It's a "Dynojet light"...
    [IMG]http://img27.imageshack.us/img27/8269/img0895o.th.jpg[/IMG]
    [IMG]http://img25.imageshack.us/img25/8668/img0900p.th.jpg[/IMG]


    Assembling and first test: perhaps this week-end.
    Update Carburetor PDF:
    http://img3.imageshack.us/img3/5206/sachs02bcarburation.pdf


    Bis bald


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von runinfrance ()

    Hello gentleman Pierre,
    very interesting with a second drilling.
    Perhaps it´s better to change your name in "Doc-R800"
    ... and the next step is a injection. F805i
    Where is the problem? Let´s do it!


    Marauder-drivers, attention!! mikosch has a mobil-FLEX with a big accumulator.
    (Sorry for the joke. R800 injection with the nice engine is a dream)
    I don´t like problems with the carburs.


    powerful V2-regards
    stan


    Doktor F 805 ? Noooooo !!!!
    But trust me! this evening clouseau works with columbo!
    Perhaps the end of enigma......???....
    There is no problem with carbs, there is just a problem with Sachs/tuv ajustments!


    Good evening...


    Sachs Bomb :tuvfuck:

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von runinfrance ()

    Hello!


    First! I choosed to make experiments with carbs of my second Sachs.
    And i wanted to exchange carburetors.
    So i worked with the "old" carbs of my second Sachs.
    I had another surprise (un-notified) during disassembling:
    - Springs were shorter and roughly cutted! I though these damages were made previously by a bad mechanic (or owner....).
    During asembling i used original springs from old carbs from VX 800.
    Adjustments are describded in my last PDF.
    Today, i decided to make exchange...
    Immediatly, i saw i just needed to exchange throttle valve with membran and needle jet.
    [IMG]http://img25.imageshack.us/img25/1451/img0912m.th.jpg[/IMG]
    And i found the horrific thruth:
    Original Sachs carbs springs were cutted by Sachs!!! Work made in south america, africa, asia and france is better...[IMG]http://img6.imageshack.us/img6/8844/img0909.th.jpg[/IMG]
    So i finalised my carbs with my adjustments with original Mikuni springs (from VX 800).


    First impressions....


    At beginning....Perfect Sachs....smooth.. round...Suzuki...
    At End .....SACHS BOMB!!


    Bis bald


    pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von runinfrance ()

    Bahnhof :rolleyes:


    Question on the firm Pierres-Tuning and solutions corp.
    Cuttet by sachs? Why a cut? Only for TÜV or operating licence? The different is the length? Is it better to drive with Mikuni-Springs? 58hp? <
    Very interesting, but it´s not easy to understand.

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von mikosch ()

    Hallo Stefan


    Bastelei ! X(


    [IMG]http://img3.imageshack.us/img3/1240/img0916.th.jpg[/IMG]
    [IMG]http://img27.imageshack.us/img27/3411/img0862ke9.th.jpg[/IMG]
    You can compare Mikuni springs and Schs mutilated springs!


    I don't understand everything! But it's really a shame! Made in germany ??!!!...
    For me 58 hp are in relationship with 132.5 and 140 main jets.
    I mean this "Flickarbeit" was made for good results with Euro 1 norm and TÜV.
    - Small orifices of piston valve reduce speed of this part. (Low and middle speed).
    - Cutted springs help valves for full opening. (high speed)
    Pollution controls are made at low and middle speed.


    This engine is made by Suzuki and carbs by Mikuni. First model was built in 1985 (VS750). So he's not up to date. But last model was build in 2006 for US. So i think it was possible to respect pollution norm with Mikuni adjustments.


    I was not alone with problems at low speed. I found testimonies on web..


    My choice preserves good performances.
    But i use classical method: not destructive for engine!
    Bad vibrations have desappeared!
    Bad vibrations destroy lamps, instruments and ..cranckshaft !


    I have no gas analyser to make tests for TÜV !...


    Bis bald


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von runinfrance ()

    Good evening, gentlemen Sachser


    A temporary conclusion:


    http://img149.imageshack.us/im…2/sachs02ccarburation.pdf


    I'm not a prophet! I don't know everythink!
    It's just a contibution for a better R800. If you can find better compatible solutions with "your TÜV".
    I think Suz 800 intruder are running in germany with TÜV.


    Now i want to test consumption and other parameters during some weeks. But today, sensations are really better (minimized vibrations and full power...)


    Bis bald


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Hello


    Money!
    (from "dark side of the moon" Pink Floyd 1973.)
    (allways Pink floyd...("welcome to the machine" from "wish you were here" 1975).


    For my modification: about 35 euros.
    - 2 springs: about 15 euros
    - 3D Jet needle (from front carb of VX800): about 12 euros
    - 2.5 and 2.8 drills : about 8 euros (2.3 and 2.5 in germany...)


    Dynojet kit for VS/VX 800: about 75 euros.
    - 2 jet needles
    - 3.3 drill


    Bis bald


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Hello! Gentlemen Sachser!


    First step of tests is finished.
    Results are good but too important consumption!
    Juergen was right: Main jets are too large (never used by Suzuki/Mikuni.)
    I found the complete Mikuni main jets collection (by 2.5 step) on a web shop in france:


    http://www.bpshop.fr/pieces_detachees_moto-AJU.html


    So i want to try a new variation with 122.5 and 135 main jets (just over VX800 specifications.)
    If you want to try another adjustments...
    I made a new PDF for future investigations:


    http://img30.imageshack.us/img30/11/sachs02ecarburation.pdf


    Bis bald


    Pierre

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Dieser Beitrag wurde bereits 1 Mal editiert, zuletzt von runinfrance ()

    Hello! Full powered-Sachsers!


    I use "Clouseau stage one" since 2009 Eifeltreffen.
    Speedway 130 kms/h (GPS): 6.4 l/100.
    Last WE, cool driving: 5.35/5.45 l/100.
    Speedy driving with friends on little roads (Joe bar team....): 6.2 l/100.
    Feeling: Allways better! Smooth and powerfull...


    http://img696.imageshack.us/im…chs11acourbesdecouple.pdf
    http://img94.imageshack.us/img…2/sachs02gcarburation.pdf


    So, for stage one:


    CERTIFIED BY CLOUSEAU WITHOUT TÜV.


    And now, i will work on stage two for F 805... Another story...


    Bis bald


    Clouseau

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Hello Pierre,


    Last Report from my Tuningbook:
    Changed the Carburetors-Springs to orig. Suzuki, Drills in Carb.-Pistons as You recommended, Mainjets 122,5 /132,5
    But at least the most effective was to change the Ignition-Timing to VX800 specification ! Engine runs easaly up to 8000rpm with " Kick in the ass effect" like VX800.
    Now i am satisfied to get the enginepower that i pay for at the gasstation.


    Last weekend Luxembourg Tour shows me a fuel consumption of 4,7L/100Km ! But under extreme conditions, that means behind my friend with his Harley Roadking. Max. speed was 80Kmh :P


    Top speed of my R800 wasn´t tested, with 70% used Metzeler Tires at windy wheather conditions my R800 is a little bit nervous at Autobahn. Report follows. If this is last message you got from me, you can be sure that i cracked the 200kmh limit with R800---first and last :mhh:



    - So thanks to You Pierre for Your " Scientific Work "


    Just one tip from me for your R800 and VX800: Remove the resistors inside of the sparkplug-connectors -/-opend with a srewdriver-/-and replace them with metalspacers so you have 0 Ohms. Engine Startup is better now. There are 5 K-Ohms inside the NGK BPR-Sparkplugs, thats enough to reduce disortions in radio frequencies. Original condition is one of Suzuki standard misconstruction.


    Ciao
    Juergen

    Hello Juergen!


    I want to change ignition timings for "F 805". And many others changes! [SIZE=7](but, today: Top secret)[/SIZE]
    Did you made photos of modification?
    With my Vx, one time: 4.6 l/100. I was following one of my friends with an Ural side-car....my VX was driving... i was sleeping..... 8)

    You don't buy a Sachs, you dream it, you build it!.... 8o 8)
    Il n'y a pas de problèmes, il n'y a que des solutions... 8) 8o

    Hello Pierre,


    changing the ignition-timing was very easy work, just drill out the holes of the pickup coil sidewards - but in the right direction- This idea comes from Your PDF. There are 1,6mm needed.
    My calculation: 140mm diameter of magnetic rotor X 3,14 = 440 mm
    Next 360 : 440= 0,8mm for 1 degree.
    -Sorry i made no photos- too lazy !


    Last Report from Tuningbook: Sachs with windshield, higher Handlebar and best girl of all at the backseat reaches 185km/h ! What a fast ride !
    But now i can´t sleep on backside at night because best girls knife is between my shoulders :mhh:


    But please be careful, Sachs with one person and minimized tires begins to tumble up from 130 km/h ! Horrible


    Ciao
    Juergen