A Giant Production Motorcycle. Only In Germany.

It’s not a joke, and I guess it’s what happens when your ideas are growing and growing and growing inside your mind. In Germany there is a guy called Clemens Leonhardt with crazy ideas about what a motorcycle should be and how it should look. And I don’t say one-off motorcycle because he intends to build small series looking exactly like this one! He states that he already received many requests, including a sidecar version. The project could not start before the right giant tires were discovered. Initially, Clemens thought he would use tires of a Boeing 767 but found out about a company called Rigdon willing to manufacture a set of 42” (D) x 15” (W) for the rear, and 38” (D) x 11” (W) for the front with the right rounded profile for the road. This bike 2 cylinders are out of an old 9 cylinder radial aero engine. With custom made cases it’s now a 350 HP, fuel injected, 6728 cc / 410 cubic inch engine.  Speed will be electronically limited to 155 mph. It’s fitted with a 3-speed transmission with reverse (I agree that it must be quite difficult to walk backward while rolling this one). The motorcycle is 134 inch long and weight 870 pounds with a very reasonable seat height of only 31.5”, which is lower than some factory bikes. I am telling you, it is the one to win gold in the class “most usual” in the next Daytona Rat’s Hole Show.  Clemens Leonhardt via TheKneeSlider    

12 Responses to “A Giant Production Motorcycle. Only In Germany.”


  1. 1 Jimmy Brodley Apr 19th, 2007 at 6:54 pm

    This builder is dreaming too much. Who gonna ride this?

  2. 2 DJ CHOPPER GOD Apr 19th, 2007 at 8:22 pm

    That bike is sick!!! I don’t know if I hate it or love the fact that somebody actually thought to do it. I think I hate it but it sure is krazy. Kudos to Clemens Leonhardt for having fun with this.

  3. 3 Nicker Apr 23rd, 2007 at 2:45 pm

    Hay, he’s having a good time with MCs and that’s what it’s all about.

    However, i’m more interested in the latest Jessy James radial powered MC…. fresh idea …. great art very well executed.

    IMHO anyway

  4. 4 Charlie Lecach Apr 23rd, 2007 at 3:51 pm

    Just wondering how the friendly people from the TÜV (German tech inspection to get a title) will react to this ? Unless it’s for competition use only, but in what kind of class ? Anyhow, I like people having a dream and doing everything to achieve it, even if they know that they will lose their money, their wife, their house and A LOT of their time !

  5. 5 Charlie Lecach Apr 23rd, 2007 at 3:51 pm

    It was supposed to read “TUV” but with two small dots on the U…

  6. 6 ChopperChick Apr 23rd, 2007 at 4:20 pm

    It’s not the size of the bike that matters, it’s how well you ride it. Ha!!

  7. 7 Stephen Budge Apr 24th, 2007 at 11:13 am

    Hey Clemens, you crazy dude. I hope the stand underneath lowers when you stop. I would hate to hold that baby up on my own. I feel the same way the previous poster feels. It’s all about fun and if you’ve got the dough why not. Steve

  8. 8 Nicker Apr 27th, 2007 at 2:06 am

    -BTW-
    On our last road trip to the Canadian border we dropped into a truck scale. Everyone clocked their (rider, gear,& bike) gross weight.

    At 870 some lbs. this German is under the our heaviest two (Road King and a Six cyclinder Honda) which were both well over 1000 lbs.

    Interestingly enough me & my K-model Beemer was the lightest, even beating out two sportsters!

  9. 9 Monika Berlin Jun 19th, 2008 at 6:45 am

    This is one mean bike alright. Would be a pain in the behind to ride though. I doubt those wheels will actually navigate well enough.

  10. 10 ricq w Aug 7th, 2008 at 4:07 pm

    Aint no chicken strips here…

  11. 11 Lissa B. Lattini Aug 2nd, 2009 at 10:37 am

    This bike so big and funny, how to ride it

  12. 12 Nigel Kotke Feb 6th, 2010 at 12:41 am

    Its a sweet engine you have there. Its just too bad you dont have the technological mind to produce the rest of the package around the spectacular powerplant!!!

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Cyril Huze