Horex Resident 350 GS

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Horex Resident 350 GS in the studio

Resi land

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As the successor to the successful Horex Regina, the Resident with a new engine should continue the success story. Even as a GS version Horex Resident 350 GS. However, only a few were sold, today only a handful still exist.

"Resi, I’ll pick you up with my tractor", A well-known Schmonzetten actor and avowed Harley fan once sang. This Resi definitely does not need to be picked up by tractor, it can cope very well on its own in the field, after all it was once built especially for this. Who today is a Horex Resident 350 GS is looking for, but will hardly find one, and if it does, he would have to dig deep into his pocket.

Horex Resident 350 GS in the studio

Resi land

Mike Kron converted Street Resi to the Horex Resident 350 GS

The downturn in the motorcycle market in the mid-1950s made sales in general, and the car as a means of transport for the masses was on the rise. Another obstacle was the fact that the Horex Resident 350 GS was actually too heavy for use in off-road sports and had a hard time against the competition from Maico and Co. But because the owner of this beautiful Resident GS, who took us to the photo production for a day in the Studio was available, a collector from the Kochertal who chose the off-road sports machines of the 1950s as a branch of his extensive collection, the Horex had to be found. An NSU-Terrain-Max and a BMW R 68 GS were already ready to keep the Horex company.

So when it was difficult to buy a “real” GS, the Horex friend decided on the path that the factory once took: Take a street resident and convert it to the Horex Resident 350 GS. Nobody less than the best of his guild came into question: the restoration specialist Mike Kron was commissioned with the construction. There is no question that nails were made here and that no part was left unturned: the frame of the basic machine was sawed, adjusted and welded where necessary, the straight travel suspension was already a thing of the past here as was the case with the two-cylinder Imperator, from the one below also the brake comes from.

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400 working hours for around 23,000 euros

The missing or different parts of the Horex Resident 350 GS compared to the normal "Resi" were acquired or rebuilt. So also a higher, wider handlebar, mounted on the specially reinforced fork bridge. Fork and suspension elements have been replaced. The engine, which was often critically assessed even then and because of its required speeds (brochure information: 25 hp at 6900 rpm), was not always stable, was completely revised, re-stored and optimized. Among other things, Kron attached particular importance to the smooth running of the piston pin and paid attention to optimal play. After all, the Horex Resident 350 GS should not only eke out its existence in the hall next to all the other collector’s treasures, but also be moved from time to time, i.e. be ready to drive. For this reason, the start number plate normally mounted in front of the headlight was dispensed with, but the equipment was supplemented with a detail that was available as an accessory at the time: the compressed air bottle and the leather pouch for tools, which now houses the connection hose required for this. This should enable the driver to reduce the air pressure in the studded tires for off-road riding, but then to adjust it again for road use. Depending on the filling of the bottle, this should be possible several times in a row.

It is very unlikely that our photo copy will ever be exposed to the rigors of off-road use. After all, around 400 hours of work are required for the restoration, the cost of construction is around 23,000 euros. Plus the price for the basic resi. The market price of the Horex Resident 350 GS, which the specialist Kron estimates at around 18,000 euros, shows that such a project does not really pay off and only explains it with pure passion for owning such a treasure.

None of this will challenge the proud collector, as he now has one of only five known examples that have survived in Germany, along with two other Horex Resident 350 GS that have found their way back from the USA. All of them probably hardly in the condition in which this new construction is. This Resi literally feels reborn and is only picked up once: from Mike Kron, by the happy owner. Without a tractor.

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Technical data Resident 350 GS

Engine: Single-cylinder four-stroke engine, two valves per cylinder, bore 77 mm, stroke 75 mm, 349 cm³, compression 7.1: 1, 25 HP at 6900 rpm, 27 Bing carburettor, oil bath clutch, four-speed gearbox, chain drive

Landing gear: Double tubular steel frame, front swing arm with oil-dampened spring struts, double swing arm with spring struts at the rear, drum brakes front and rear, Ø 190 mm, ready-to-drive weight 170 kg, tank capacity 16 l, top speed 135 km / h

Contact: www.the-classic-bike-mike.de

Motor base for 250 and 350 cc

A newly designed engine for the Horex Resident formed the identical basis for the design as a 250 or 350. Contrary to the original intention to largely keep the engine of the extremely successful predecessor Regina or to continue using numerous components, it ultimately became an almost completely new design. The 350 (pre-number 08 of the engine number) and 250 (pre-number 11) use the same cylinder and the same cylinder bore (77 mm), only the significantly shorter stroke of 53.4 mm made the difference between the smaller, very short-stroke single and the slightly under-square designed 350 with its 75 mm stroke.

The reduced bore / stroke ratio from 69 to 91.5 mm in the Regina to now 77 to 75 mm in the Horex Resident made it possible to reduce the piston speed to a less critical level. In connection with the triple-bearing crankshaft and other detail improvements, this should ensure greater stability. In contrast to the Regina engine with rocker arm, the Resident-Single uses a high-lying timing drive and short tappets and bumpers. The connecting rod bearing of the same size from the Regina was adopted, but the connecting rod was shortened from 169 to 145 mm. With an identical compression ratio of 7.1: 1 and also identical (for the 250, very generously dimensioned) valve cross-sections of 42 mm (inlet) and 38 mm (outlet), the engine of the Horex Resident 350 GS in the 250 version produces 20 hp at 7200 / min, the 350er 25 HP at 6900 / min. According to the manufacturer, the powerful 350 should even be economical and consume a meager 2.3 liters / 100 km at a constant 60 km / h.

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