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Webra Red Head 120 racing engine med rear exhaust
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2 500 kr
Frakt fra 69 kr + Trygg betaling 162 kr
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Tilstand: Pent brukt - I god stand
Dette er en Webra Red Head 120 racing engine med rear exhaust.
Dette er en skikkelig sjelden fugl. Webra var en av de mest anerkjent i racing og kunstflyging.
Motoren er veldig ren og ser ut som den er lite brukt. Jeg har prøvd å ta bilde av stempelet og den ser ut som det er fri for koks.
Jeg har ikke renset den så den er som jeg har fått den. Jeg husker ikke når og hvor jeg fikk den men den har ligget helt sikkert over ti år på hyllen min. Jeg rett og slett snublet over den mens jeg tok ut modeller for å selge
Jeg tømmer lageret så å si. Bare fordi jeg innser at det blir aldri aktuelt for meg å bygge alle disse modellene.
Jeg har sikkert kjøpt den for å passe til et SIG Four Star 60 kit jeg har liggende. Men det blir lenge før jeg tar den frem og det flyr fint på en .90.
Så hvis du er en ekte kunst flyver eller bare vil ha en historisk power pack på din fly er det bare til å ta kontakt.
AI Overview
The Webra Racing 120 (often recognized in its rear-exhaust variant RC Groups) was a highly regarded, niche powerhouse Facebook in the giant-scale RC community. While its smaller siblings (like the Speed .61) achieved massive mainstream dominance, the 120 was popular among performance purists wanting two-stroke power to rival four-strokes RC Groups.
Why it Earned a Cult Following
• Power-to-Weight: Designed as a lightweight powerhouse Sceptre Flight, it provided excellent grunt for large airframes without the heavy weight penalty of larger four-stroke engines RC Groups.
• Engineering Quality: Produced by the Austrian-based factory Model Engine World (Austro-Webra), it featured tight tolerances, durable piston/liner setups, and reliable operation for demanding flyers [AvCom](https://www.avcom.co.za/phpBB3/viewtopic.php?t=121478, Model Engine World Model Engine World).
• Accessibility: Parts and support were heavily backed by distributors like Horizon Hobby RC Groups during its production years.
Why it Remained Niche
• Fuel & Tuning Demands: As a high-performance two-stroke, it required careful tuning and specific fuel blends (such as castor oil mixtures) to run optimally AvCom.
• The Four-Stroke Shift: During the peak era of the 120, many sport and scale flyers gravitated toward the realistic sound and lower RPM torque of four-stroke engines.
• Legacy: Today, the engine is largely considered a vintage collector's item AvCom and is heavily sought after on platforms like eBay eBay and vintage RC forums RC Groups.
The Webra Racing 120 Rear Exhaust (often paired with the highly adjustable Dynamix or Promix slide carburetor RC Groups, Webra Webra Silencers) is widely considered the absolute pinnacle of the Webra 120 family RC Groups.
Choosing the rear-exhaust version significantly impacts how the engine is set up and flown:
The Tuned Pipe Advantage
• Maximum Performance: The rear exhaust configuration was explicitly engineered to utilize a resonant tuned pipe running straight back through the fuselage Webra Silencers, maximizing the "scavenging" effect of the two-stroke cycle.
• Aerodynamic Cleanliness: Because the exhaust exits out the back, it allows pattern and sport planes to have a completely enclosed, streamlined cowl without a bulky muffler sticking out the side.
Setup and Running Characteristics
• Propeller Selection: It prefers to rev higher than standard side-exhaust engines. It performs exceptionally well on high-quality sport/pattern props (typically around 15x8 to 16x8 depending on your exact airframe).
• Fuel Requirements: This engine thrives on low-nitro or zero-nitro fuel (FAI blend) with a high-quality oil package AvCom. Ensure your fuel contains at least a portion of castor oil to protect the tight tolerances of the piston and liner AvCom.
• Crankshaft Hardware: The crankshaft thread pattern is a metric M8 × 1.25mm RC Groups. If you are missing the original prop nut, standardized metric adapter kits from brands like Tru-Turn or Du-Bro fit perfectly RC Groups.
Parts and Maintenance
Because the engine is long out of production, components can be rare. If you need replacement gaskets, replacement headers, or internal parts, the Model Engine Corporation of America (MECOA WEBRA) officially owns the tooling and hosts a stock of vintage Webra spare parts.
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Sist endret: 11.8.2026 kl. 20:07 ・ FINN-kode: 466800592
