Enduroboxer, a BMW airhead reworked from a police bike into an successful enduro racer!


Enduroboxer…

Sure, what about it? The primary BMW R80G/S? The airhead that jump-started the profession of dualsport bikes and dominated the Paris-Dakar Rally? 

Sure, that one, on steroids! Or on a food regimen..? I’m undecided, let’s get into it! 

Intro

Impressed by German legends Fritz Witzel, Eddi Hau, and Herbert Schek, Manuel had the thought to enter an 800cc airhead into an enduro rally for twins >500cc. Not the plain selection, for the reason that airheads are neither notably light-weight nor notably highly effective. Particularly those that had been initially assigned to the German Police Drive. So what did Manuel do to this battleship of a motorbike to permit him to race within the enduro class and even grow to be German nationwide champion within the Interessengemeinschaft Enduro (IGE) class? 

The donor bike

He acquired the previous Augsburger bike and strengthened the body to permit for the abuse he was about to place it by. He designed, reduce, and welded reinforcements to the steering head, the highest tube, and to the swingarm attachment factors. Then, he swapped the unique twinshock for a later mannequin paralever. This reduces the reactionary forces of the drive shaft development and permits for the usage of a centrally mounted rear shock. The highest of that shock mounts to the principle body, quite than to the rear subframe, which was frequent commonplace on the unique twinshock airheads. The present subframe Manuel constructed himself, and hosts the Maico seat and the SR Racing muffler, one other weight saver. The elongated design permits for ample padding and shifting weight simply in tough terrain. A Preston Petty MX fender prevents the mud from amassing on prime of the bike.

The modifications

On the entrance, all mid-1970’s parts have been swapped out for extra fashionable, high-performance components. A WP AER fork sits in strengthened CNC aluminium triple clamps. These too Manuel designed and produced inhouse. Simply behind that sits an aluminium petrol tank, kindly donated by a Husqvarna. The engine sits centrally within the body and Manuel closely modified it to swimsuit his wants. Most evident are the extra oil-cooler, the rerouted exhaust headers, and the hefty bash-plate. But one thing is off while you have a look at it. In case you look carefully, you will discover that he floor off the highest of the engine case, timing cowl, and entrance engine cowl to avoid wasting weight. It at present boosts 880cc and places out ample grunt to get Manuel throughout the end line first. It’s not similar to what a contemporary 900cc engine would put out when it comes to energy, however keep in mind that these engines had been engineered to be very rideable. They put out a powerful quantity of torque throughout the rev vary. And that’s saying one thing! Particularly when you think about that Manuel stands over 2 metres tall. Maybe that’s the key to his success. He discovered a distinct segment the place he can mix his peak, his expertise, and his wrenching abilities, and compete on the prime stage. Whenever you see him on his enduroboxer, he whips it round like a dirtbike!

Put to motion

What makes the bike so particular is that it has been constructed to experience, and that it’s ridden. For a few years now it accompanies Manuel at sport occasions, they usually have skilled many highs and lows collectively (pun meant!). They’ve ridden the Erzberg Rodeo, Le Tourquet, and the various IGE enduro competitions. And nonetheless, it makes him blissful to experience! In regards to the bike in his personal phrases [translated from German]: “The bike rides nice, it’s actually enjoyable. One shouldn’t neglect although, that I constructed it particularly for myself, and that I massively modified it through the years. A motorcycle so becoming, I might by no means have been in a position to purchase off the shelf.”

Impressed?

Now if this has tickled your fancy, or if one in every of our earlier posts about enduro or dualsport boxers did, get in contact with Manuel. In the course of the week when he isn’t successful on the monitor, he’s giving it his greatest within the store. Over 130 frames have been straightened and/or strengthened by their fingers. And for those who look carefully, you’ll begin to see Manuel’s work in lots of different bikes. Body modifications, customized builds, and components, SWT-Sports activities is a one-stop-shop for getting the airhead of your goals, particularly while you’re trying past a bobber or cafe racer!

Photographs supplied by Manuel Schad