[Gator]

gator a écrit :

BBR est en train de construire une 480 CR « HRC Magoo replica »…
Ca devrait être pas mal.
;-))

Finie!

[Driv one SX]

Du beau boulot :-)))

[thebub]

gator a écrit :

gator a écrit :

BBR est en train de construire une 480 CR « HRC Magoo replica »…
Ca devrait être pas mal.
;-))

Finie!

C’est là qu’on se dit que tant qu’a tout inverser, Honda y z’auraient dû aller jusqu’au bout de la démarche et en faire une anglaise avec le sélécteur à droite et les rapports inversés…;-))

[Gator]

Ha bah à une époque, les euros étaient la référence, hein… La fin des années 70 est certainement la période où la conception générale d’une Honda CR était la plus proche d’une Husqvarna CR. Y a une influence assez manifeste…

;-)))

[Scarr]

Tiens, à priori spécial 2T (mais pourquoi pas 4T…? ) est-ce que quelqu’un connait, ou a essayé…

https://smartcarbfuelsystems.com/

 »  

The SmartCarb is a precision air and fuel metering instrument designed to push the limits of mechanical fuel atomization.

Ultra-fine fuel atomization occurs via proprietary venturi features that concentrate and accelerate airflow past a precision ground metering rod. High velocity airflow focused directly at the metering rod picks up fuel droplets that are smaller and more uniformly distributed in the mixture than those produced by modern EFI and conventional mechanical fuel systems. Superior fuel atomization provides for a more complete combustion burn, resulting in increased power (10% More HP) using less fuel (30% Improved Fuel Economy). « 

[Gator]

Le grand concurrent du Lectron…

Les deux sont très tendance depuis la grande mode de la restau de motos des années 80/90…

SC2 SMARTCARB FOR TWO-STROKES: PRODUCT REVIEW

[Scarr]

gator a écrit :

Ha bah à une époque, les euros étaient la référence, hein… La fin des années 70 est certainement la période où la conception générale d’une Honda CR était la plus proche d’une Husqvarna CR. Y a une influence assez manifeste…
;-)))

La Honda, il y en avait une exposée, une 250, avec un kit 360 Mugen offert…restée longtemps invendue. Cà doit coûter un bras et un oeil maintenant.

La Husqvarna, je repense obligatoirement à Patrick Fura… ou Larry Roeseler dans le desert entre Ensenada et La Paz, avec les gros phares et pleine balle… 😉

[Scarr]

gator a écrit :

Le grand concurrent du Lectron…
Les deux sont très tendance depuis la grande mode de la restau de motos des années 80/90…
https://dirtbikemagazine.com/sc2-smartcarb-for-two-strokes-product-review/

Merci ! J’adore ces trucs, cà ouvre effectivement des perspectives pour les restaurations…

Un Lectron, j’en avais un version « Blue Magnum » Monté sur un 250 XLS, culasse tapée, arbre à came WB stade 2…Bon, je passais pas le contrôle sonomètre avec le Supertrapp…  j’étais jeune, mais ça n’excuse pas, je suis bien puni maintenant avec les lascars et le barouf qu’ils font dans la téci derrière…Ils dorment jamais ces jeunes ?  😉

[Scarr]

Comparo des smart carbs…

[Gator]

Et n’oublie pas ça…

MXA TEAM TESTED: DICK’S RACING INTELAJET CARB MOD

[Gator]

Il me semblait bien, mais je n’étais plus très sûr: si leurs créateurs ont manifestement collaboré, le Blue Magnum était un concurrent du Lectron…

« Lectron was founded in 1973 by Norm Quantz, the chief designer and engineer of the single-fuel ‘slide and pin’ type carburettor (with a unique metering rod), ingeniously developed as a guillotine slide concept; which is responsible for intense atomisation of fuel particles and has no jets and requires minimal tuning due to environmental ‘air pressure’ auto-tuning, which occurs naturally when conditions change or there is a change in air pressure from traveling to different altitudes or climates. Lectron further disrupted the industry when it began in 1974 by developing two carburettor firsts; the flat slide and the flat metering rod. Lectron continues to build upon these innovations and supplies both professional racers and weekend warriors with technology that improves torque, horsepower, and fuel economy while adjusting for atmospheric conditions. Lectron takes the trial & error out of tuning, eliminating all the painful hours spent trying to micro adjust for ‘known’ factors and ‘unknown’ tuning variables. This well designed carb « auto-tunes » to compensate for things like altitude changes, pipe swaps, porting, reeds and any other thing that you would usually have to « re-jet » your carb for, so that your bike continues to run crisp. Here’s how they do this; Lectron uses a single fuel metering device (AKA Metering Rod). This one device takes the place of a pilot jet, intermediate circuit, and main jet found in a conventional carburettor. This one metering rod not only replaces the ‘jet’ (a single port metal tube that air and fuel pass through to create fuel mixture), but also offers the equivalent surface area and technology equal to approximately 12 main jets versus the normal 4 to 5 jet configuration in a conventional carburettor. »

–

« Since the beginning of the combustion engine, man has had a natural desire to get as much power out of the wide variety of motors manufactured for work and play. For the past 37 years, William “Red” Edmonston has chosen the motorcycle as his passion for power and speed.
Red started racing Triumph motorcycles in the 1940’s and after 13 years of racing and breaking bones, he decided to move to California and work with Triumph as a road manager as well as open a Honda dealership to provide for his young family. During the 1960’s, Red continually became frustrated with the fuel delivery systems for the motorcycle industry. Most of the carburetors being manufactured and sold on motorcycles were complex to tune, and required a constant effort to keep tuned for proper operation of the motor. This was primarily because of the multiple and overlapping circuits (different jets for the differing throttle positions) that caused the air fuel mixture to be very rich at different throttle positions. These early carburetors could not adapt for altitude changes either, which added to the constantly differing air-to-fuel ratios and tuning problems. Besides the frustrations that many had with keeping their motorcycles running at optimum, these crude fuel delivery systems also cause the motor to run very inefficiently and with significant harmful emissions.

In the late 196o’s, after many years of racing, managing race teams, and selling motorcycles, Red began his long career of inventing, designing, and manufacturing carburetors for the motorcycle industry. In short, Red has had a significant impact on the motorcycle industry over the past 40 years. Red has held nearly 100 patents and has invented and manufactured nine different carburetors, each of which has shared some similarities while each subsequent model continually added improvements in functionality and performance. The history of the Red Edmonston’ carburetors spans many years and a great deal of experience and improvements:

· 1968-1969: The Lake Injector prototype and final production model carburetor.
· 1970-1971: The Pos-A-Fuel prototype and final production model carburetor.
· 1971: The Pos-A-Fuel with remote float bowl production model carburetor.
· 1973-1974: The Lectron prototype and final production model carburetor.
· 1976-1977: The E.I. Prototype and final production model carburetor.
· 1978: The Blue Magnum production model carburetor.
· 1980: The Bank of Four Blue Magnum model carburetor.
· 1981-1982: The Qwik Silver prototype and production model carburetor.
· 1982: The Qwik Silver Bank of Four carburetor wins Daytona super-bike race.
· 1993: The Qwik Silver II production model carburetor (sold to Edelbrock).

Red has always been intrigued by speed and power in the motorcycle industry and his insatiable desire to continually improve on the fuel delivery to the motorcycle engine has benefited a very long list of motorcycle enthusiast and racers. The complete list of racing careers that have been enhanced would be far too long to mention, but some of the more prominent names of racers that have won championships with Red’s carburetors include Kenny Roberts, Eddie Lawson, Freddie Spencer, Ricky Graham, and Doug Domokis.

With such a long history of invention successes and countless motorcycle world championships being won with Red’s various carburetors, one might think that Red would be content to finish his career on top with the sale of the Qwik Silver II to the well renowned Edelbrock Corporation. »

[Scarr]

..et en fait, Smartcarb est une synthès de tout celà…vrai ou faux…

Bon, je vois aussi qu’ils s’occupent des 4T, cool…Pas enthousiasmé à l’idée de retourner bricoler des gicleurs et des aiguilles….faut vivre avec son temps.

Sur leur page FB, il y a même un moteur Wankel, à priori…  ^^

https://smartcarbfuelsystems.com/about/

[Gator]

Intéressant…
La toute nouvelle moto de Levi Sherwood, entièrement sur mesure, créée autour d’un moteur de 250 SX et annoncée comme ultra légère…

[thebub]

gator a écrit :

Intéressant…
La toute nouvelle moto de Levi Sherwood, entièrement sur mesure, créée autour d’un moteur de 250 SX et annoncée comme ultra légère…

Et le pot vertical pour être moins large… 

[Gator]

J’aime beaucoup le réservoir…

;-)))

[Auteur]

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