Russell Sutton has proven once again that patience can trump all adversity. If you recall, the man has spent nearly five years constructing a nine-cylinder radial engine from a smattering of Honda single-cylinder XR600 thumpers. The last time we saw this beast, it ran briefly before succumbing to mechanical failure due to some lackluster cylinder sleeves. Now Sutton has resleeved each of the nine cylinders and has his creation running like a song with a little help from an MSD rev limiter.

The big beastie idles at around 600 rpm, and our favorite mad engine builder has rigged up a clever disc-brake load generator to give the radial something to work against. Pushing against the load, the radial evens out into a delicious thrum. Sutton is currently working on a three-blade prop for his design as he works toward building what will be the world's coolest air boat. Check out the lengthy video for yourself below. The fun gets started around the four-minute mark.



I'm reporting this comment as:

Reported comments and users are reviewed by Autoblog staff 24 hours a day, seven days a week to determine whether they violate Community Guideline. Accounts are penalized for Community Guidelines violations and serious or repeated violations can lead to account termination.


    • 1 Second Ago
  • 32 Comments
      Jerry
      • 1 Year Ago
      This guy is a badass
      montegod7ss
      • 1 Year Ago
      Always been more of a Merlin V12 guy, but that's seriously cool to have built his own radial of that size. Hearing and seeing Sea Furys, Mustangs, Bearcats, and Tigercats racing 100ft off the ground is something everyone should see.
      savvybuyer
      • 1 Year Ago
      An air boat is a great use for that motor. Air boats are just plain loud and fun anyway, putting this on one would up that by a factor of 5 at least. Not to mention that the physical size and shape of this thing would be absolutely perfect for that application. Can't wait to see the end product. Would really want to be sure he had the reliability dialed in before getting stranded in a swamp, though.
      mbukukanyau
      • 1 Year Ago
      Man, that is one awesome motor. Hopefully this guy builds a plane for it.
        Rr778
        • 1 Year Ago
        @mbukukanyau
        I hopehe puts this on the back of Marty's hoverboard.
        onewayroll
        • 1 Year Ago
        @mbukukanyau
        It's going to be installed in a air boat which it says in the article above.
      Brodz
      • 1 Year Ago
      This is just how we roll in Western Australia. Thanks for representing Russ.
      Andy Smith
      • 1 Year Ago
      I really admire this guy's tenacity. Agree with montegod7ss that nothing beats the sound of a Merlin, but this comes a close second and what a chore it must have been to build. Kudos Mr. Sutton!!
      Ali Zein Yousuf
      • 1 Year Ago
      What kind of horsepower does this put out?
        Mr E
        • 1 Year Ago
        @Ali Zein Yousuf
        the bad ass kind of horsepower
        justgoawaymad
        • 1 Year Ago
        @Ali Zein Yousuf
        well the xl600 stock made 45 h/p. You have 9 of them so a good starting point would be 405 h/p. But there are lots of varables such as one crank instead of 9. etc etc etc.
        1454
        • 1 Year Ago
        @Ali Zein Yousuf
        Who cares about HP, I just want to know how much torque it makes. HP is RPM and Torque dependent, so give me gobs of TQ all day long and I won't complain.
          NissanGTR
          • 1 Year Ago
          @1454
          Torque is useless in anything besides a cargo plane.
          edward.stallings
          • 1 Year Ago
          @1454
          Yes horsepower is rpm and torque dependent. It is also a measure of how much work can be done, which equates to how fast something can accelerate and how fast it can go. Torque is a measure of force alone. A million lb-ft of torque at 0 rpm = 0 horsepower and can do no work, and can not move anything. Once something is being turned with that torque, power is generated. If the rpm is very low, the power will be too. It is a bit hard to grasp, but torque does not move things, power does...
        Andy Smith
        • 1 Year Ago
        @Ali Zein Yousuf
        He said about 350hp @ 3500rpm.
          Cory Stansbury
          • 1 Year Ago
          @Andy Smith
          I highly doubt that. That would mean each 600 cc engine is making 38 HP at 3500 RPM (which would be amazing). Those engines made about that at 6500 RPM stock. I believe it could make 350 hp, but at higher RPMs, such as 6000-7000.
      marv.shocker
      • 1 Year Ago
      No way that guy's married...
        rmkensington
        • 1 Year Ago
        @marv.shocker
        Who gives a crap about marriage if you can make something like that.
      Eyedoc Orlando
      • 1 Year Ago
      I want this for my lawnmower
      domingorobusto
      • 1 Year Ago
      This man is my hero. A homebuilt engine that works great. A homemade engine brake that works great. A test stand for a radial in his back yard, NFG about what the neighbors think. Bad. Ass. Only thing: Come on man, how long would it have taken to rig up a spash shield for the brake :)
      o s
      • 1 Year Ago
      he should go on kickstarter and get funding to further develop and eventually market this. this is so awesome
      jeremie
      • 1 Year Ago
      At first glance I thought that thing he had his hand on was the motor.
    • Load More Comments