Rotary Wankel Engine - 160cc KM48 Sachs -

Rotary Wankel Engine - 160cc KM48 Sachs

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New and Unused in Box

Current Price: 425.00 USD

A unique opportunity to own a bit of history.

This SACHS KM48 wankel type rotary engine was supplied in the early 1980's to the UK military as part of a kit of spares for their super silent generator sets.

Apart from being tested in the factory the engine has never been used. It will be supplied fully wrapped, unopened and all the parts have been oiled for storage.

It really is like brand new inside. I opened one unit up to take some photo's so you can see the condition of the parts and, as you can see from the pictures above, everything looks brand new. Whether you're just interested in how these engines work, need a replacement for your aging KM48 unit or plan to use it for a project this is a perfect opportunity to purchase a brand new version of the now very rare KM48 power unit.

Technical Specification

Builder	Fichtel & Sachs AG, Schweinfurt, Germania 1965
Type	KM 48
Description	Wankel rotary engine, single rotor, aluminum engine block
Displacement	160 cm³
Compression ratio	8,0:1
Power	8 CV at 4700 rpm (10 CV at 5000 rpm, version K8B)
Fuel specific consumption	315 g/CVh
Fuel system	gasoline with single barrel carburetor
Ignition	one candle powered by distributor, inductive discharge system
Cooling	air
Lubrication	mixture of petrol and oil ratio of 50:1

A Bit Of History

The KM48 Sachs Wankel engine was available from the late 1960’s through the early 70’s and is a 160 cm3, single rotor, air cooled engine developing between 8 hp and 10.5 hp (The horsepower varies depending on what F&S manual you look at).

Sachs designed the engine to be used as power for rototillers, pumps, generators, lawnmowers, etc, etc.. much as B&S, Tecumseh, Kohler and others do in this country. Despite extensive testing, (and the best efforts of Sachs' sales & marketing departments), - it is not believed that these small Wankel motors were very popular. Larger displacement versions of the F&S rotary combustion engines were available in the USA and Canada on snowmobiles. There is very little information regarding the Italian company (Moto Attrezzi) that assembled and sold the motors – they did not even include their name or corporate information in the instruction manual!

The KM48 runs on 50:1 oil/gas mix and, since it is air-cooled, it is preferable to use a quality chain saw or motorcycle oil on this motor (I run my one at 40:1 for added protection)

Even though you mix the gas an oil together for lubrication the rotor and seals, this motor is not a 2-stroke. Wankels are unique in that they have induction, compression, combustion and exhaust cycles but are also not 4-strokes since they do not reciprocate. A happy compromise would be to describe this motor as a 4-cycle burning pre-mixed fuel and oil for lubrication.

My Background

I'm a qualified mechanical engineer with over 10 years experience in the design and development of small air and water cooled rotary engines for use in drones, cars and generators. I bought a few of these Sachs KM48 engines as they're very closely related to some of the engines I've worked on in the past. If you need any help with the engine, I'm always available by e-mail or phone. I also have plenty of spares - carbs, spark plugs, balance weights - whatever you need to get up and running.

Don't miss out - I only have a few of these left and they're very rare so get bidding and good luck!

Click here to purchase or contact the seller of this item on eBay