Neptune. 1947 Harley-Davidson By Custom Builder Shinya Kimura

Give any motorcycle to veteran custom builder Shinya Kimura (already in his 25th year career) and you can bet that the final result will look like nothing else you have admired before. This functional design is born from a 1947 Harley-Davidson and of course from his bold imagination. The theme? Neptune, not our outermost “blue” planet, but the God of water and sea both in Roman ((Latin: Neptūnus) and Greek (Poseidon) mythology.jut reminding you that Shinya Kimura started in 1993 in Japan the brand and style movement called Zero Engineering whose philosophy is to create sculpturally unique rolling designs with aesthetic values limited to basic and organic shapes. Now, I let you admire his fabrication work. One of the bests at creating functional art…

33 Responses to “Neptune. 1947 Harley-Davidson By Custom Builder Shinya Kimura”

  1. 1 Brandon Aug 26th, 2011 at 9:20 am

    Love his style.

  2. 2 Shifter Aug 26th, 2011 at 9:22 am

    Old Japanese jewelry. Looks good. For sure he owns a style.

  3. 3 Larry Sehmer Aug 26th, 2011 at 9:23 am

    I Like it too, but I don’t understand the ocean/neptune theme for a Harley.

  4. 4 Larry R Aug 26th, 2011 at 9:56 am

    Excellent! He gives it his all. Great work!

  5. 5 DUHL Aug 26th, 2011 at 10:43 am


  6. 6 Unkl Ian Aug 26th, 2011 at 11:08 am

    Shinya is brilliant.

  7. 7 Eric Maurer Aug 26th, 2011 at 11:18 am

    love it!
    short bikes with baby apes is IT! Noting better!
    Great work Shinya

  8. 8 me Aug 26th, 2011 at 12:40 pm

    The only thing I don’t like are the brake and clutch cables. They look like an after thought and just hanging there.

  9. 9 henry Aug 26th, 2011 at 12:40 pm

    My favorite part on this bike is the headlight.

  10. 10 badams Aug 26th, 2011 at 1:05 pm

    Artisan’s work. IMHO its a refreshing interpretation of a vintage custom. I get the Neptune reference, seems to have cues from the Nautilus in Jules Verne’s 20,000 Leagues Under The Sea.


  11. 11 chopmonster66 Aug 26th, 2011 at 1:52 pm

    sweet ride , love all the hand made parts , no cnc here ! cables do look like after thoughts . but that is the way it used to be basck in the day.. keep up the great work!!!

  12. 12 A 1 CYCLES Aug 26th, 2011 at 3:10 pm


  13. 13 roscoe Aug 26th, 2011 at 3:20 pm

    Looks great. Always nice work from Shinya.

  14. 14 chopperfreak29 Aug 26th, 2011 at 4:00 pm

    Awesome. Truly awesome. I’ve been following his career for about 10 years now and Shinya consistently outperforms all other designers and builders out there. As the cables being an after thought, as was mentioned a couples times above, I can assure you that they are definitely not. Every inch of this bike is the way it is for a reason. Old bikes with old/old style running gear break cables when they’re ridden and Shinya’s bikes get ridden hard. I can’t tell you how many times I’ve replaced cables on my flathead. Enough that I’m an expert at making my own cables on the side of the road. lol If I had hidden or tucked away cables I’d spend alot more time on the side of the road. It’s a nice look to have hidden cables, but it’s not really very practical.

  15. 15 Boomer Aug 26th, 2011 at 8:54 pm

    I absolutely love this Knuck!

    The Jules Verne reference is spot on as well as the name Neptune. For anyone who has been around hard hat deep sea diving the cables speak for themselves. It’s as part of the look as the hard hat speedo mount and tail light in the same era as the Knuckle is.

    I don’t see (sea) many people truly getting this art which is also coupled with the deep sea divers of the day.

    This bike is so perfect; it’s almost too nice to ride. It almost screams for a Persian rug to park on in front of a huge fireplace while its admirers sip on the finest of (insert favorite drink here).

    At my age I’d give my left nut for this bike. (big grin)

    Well done Mr. 真也木村!

  16. 16 Kustoms and Choppers Aug 26th, 2011 at 10:17 pm

    Its a work of Art, I like the retro future Submarine theme to it.

  17. 17 ray c wheeler Aug 27th, 2011 at 12:02 am

    Mighty Fine!….

  18. 18 Boss Hawg Aug 27th, 2011 at 8:12 am

    Beautiful machine…nice work!

    Boss Hawg

  19. 19 Ed Martin Aug 27th, 2011 at 9:44 am

    Shinya kun, Dai tsuki……tsugoi…….omedetou, yoroshiku, Edo

  20. 20 DantheGrey Aug 27th, 2011 at 1:45 pm

    If only I could grasp his ability to build not so perfect perfection my ride wouldn’t still be sitting in my shop after three years.

    This bike has given me the inspiration to seek less and end up with more in the end.

    Got to go, my bike is calling.

  21. 21 Jeff Nicklus Aug 27th, 2011 at 2:25 pm

    Not even remotely my style of bike …. but a damn nice bike none the less!

    Over & Out,


  22. 22 SmittyDog Aug 27th, 2011 at 5:37 pm

    Nice Bike, Doesn’t get enough credit for his work.

  23. 23 Kirk Perry Aug 28th, 2011 at 11:22 am

    Want to build a bike like this and ride it on the streets of California ….. once again? If so, then prepare a bedroll and newspapers (for a mattress), and your Special Construction Builder’s permit and camp out with us at every DMV station across the state, on Tuesday, January 3, 2012, waiting with thousands of other permit-needy people to try and register your home-built bike – competing with all the other builder’s for ONE of the 500 ONLY permits allowed for 2012, for home-built contraptions (cars, motorcycles, planes, trucks, amphibious vehicles, and anything else that can be conceived that rolls on wheels with the aid of a combustion motor.)
    We’re bound to get headlines if enough of us are huddled outdoors in freezing January, like Freight Train Riders of America.
    I’ll be at the Oceanside DMV early on Jan. 2, 2012 camped out. I’m trying to register my 1998 STD rigid frame Panhead.
    The EPA has arranged SECTION G. of their recommendations as one-kit-per-person-per-lifetime permit for their junk heap, and goddamn it, our republican rep. Martin Garrick had promised to help get our section G. EPA rights established BEFORE we elected him. Then, he let the old guard in Sacremento, drink him under the table last May 2011, and by the end of the evening, he wound up evading the police on a Mad-Toad chase through the capitol parking lot and they busted his drunk ass. Now he’s too ashamed and collared by his constituents to further our needs. Boo! If he can be convinced to put a cork on that booze bottle and keep his promise, we might have a chance with him teaming up with the AMA (who has the EPA charter in hand) and get our little society going again.
    California antique motorcycle society is no better off the the Cuban Harlistas, trying to keep their heritage machines on the road, battling a chicken-shit government that’s picked on us because we have no support.
    See ya in spirit on January 3, 2012. Be there to protect our rights to maintain our motorcycle heritage, or you don’t have a hair on your ass.

  24. 24 Kirk Perry Aug 28th, 2011 at 5:26 pm

    This is a link to the Calif. Vehicle Code – Section 580 • Last revised January 15, 2011 –

    A “specially constructed vehicle” is a vehicle which is built for private use, not for resale, and is not constructed by a licensed manufacturer or remanufacturer. A specially constructed vehicle may be built from (1) a kit; (2) new or used, or a combination of new and used, parts; or (3) a vehicle reported for dismantling, as required by Section 5500 or 11520, which, when reconstructed, does not resemble the original make of the vehicle dismantled. A specially constructed vehicle is not a vehicle which has been repaired or restored to its original design by replacing parts.
    (a) Any person, other than a licensed dismantler, desiring to disassemble a vehicle of a type required to be registered under this code, either partially or totally, with the intent to use as parts only, to reduce to scrap, or to construct another vehicle shall deliver to the department the certificate of ownership, the registration card, and the license plates last issued to the vehicle before dismantling may begin. (b) Any person who is convicted of violating subdivision (a) shall be punished upon a first conviction by imprisonment in the county jail for not less than five days or more than six months, or by a fine of not less than fifty dollars ($50) or more than five hundred dollars ($500), or by both that fine and imprisonment; and, upon a second or any subsequent conviction, by imprisonment in the county jail for not less than 30 days or more than one year, or by a fine of not less than two hundred fifty dollars ($250) or more than one thousand dollars ($1,000), or by both that fine and imprisonment.
    Section: 5500
    Last modified: January 15, 2011
    Calif. Vehicle 11520 – Deals with licensed dismantlers and their time and paper transfer requirements.
    The word motorcycle wasn’t used. Looks like the camp out got rained out.
    What a revolting development this turned out to be. Boy howdy.

  25. 25 martin Twofeather Aug 28th, 2011 at 5:57 pm

    Great work and he’s a great talent…..

  26. 26 Kirk Perry Aug 29th, 2011 at 11:39 am

    This DMV heading includes the word “amnesty” …. I’m on the trail and waiting a phone call from the DMV to sort all of this out. I’ll be back with the synopsis before the end of the day.

    Registration Requirements for Home Made Specially Constructed or Kit Vehicles

    A “home-made, specially constructed, or kit vehicle” is a vehicle that is built for private use, not for resale, and is not constructed by a licensed manufacturer or remanufacturer. These vehicles may be built from a kit, new or used parts, a combination of new and used parts, or a vehicle reported for dismantling (junked) that, when reconstructed, does not resemble the original make of the vehicle that was dismantled. (See revision Jan. 15, 2011 Section 5500 above, they removed the word (junked) and want to be sure the special construction Corvette made from parts isn’t sold as a used Corvette.)

    A specially constructed vehicle (SPCNS) does not include a vehicle that has been repaired or restored to its original design by replacing parts or a vehicle modified from its original design.

    Example: A Volkswagen “Beetle” with modified fenders, engine compartment lid, and front end, but still recognizable as a Volkswagen is not considered a specially constructed vehicle.

    NOTE: The registration requirements for kit commercial vehicles are the same as for specially constructed vehicles.

    The Registration Requirements are:

    A completed Application for Title or Registration (REG 343).
    A vehicle verification done by the California Highway Patrol (CHP). You must start your application process with the DMV prior to contacting the CHP for a vehicle verification. DMV verifies trailers with an unladen weight of 6,000 pounds or less.
    A completed Statement of Construction (REG 5036).
    Proof of ownership, such as invoices, receipts, manufacturers’ certificates of origin, bills of sale, or junk receipts for the major component parts (engine, frame, transmission, and body).

    NOTE: A motor vehicle bond is required when proof of ownership cannot be obtained for parts valued a $5,000 or more.
    Official brake and light adjustment certificates. When an official brake and light station that inspects specific vehicles such as motorcycles and large commercial vehicles is not located within a reasonable distance, DMV will accept a Statement of Facts (REG 256) from a repair shop attesting that the brakes and lights are in proper working order. Brake and light certificates are not required for off-highway vehicles or trailers weighing less than 3,000 pounds gross vehicle weight.
    A weight certificate for commercial vehicles weighing 10,000 pounds or less.
    An emission control inspection (smog check) by a Bureau of Automotive Repair (BAR) Referee Station. Click here for information on SPCNS Certificates of Sequence . To make an appointment at a BAR Referee Station, call 1-800-622-7733.
    All fees due.
    Visit your local DMV to begin the application process, make an Appointment(s) for faster service.

  27. 27 Kirk Perry Aug 29th, 2011 at 12:20 pm

    The DMV called. I explained the situation bottom-line – registering a 1957 replica Panhead from individual and group parts.
    He said, (off record) that the best thing to do between now and 2012, is to make a free appointment with the DMV and take them your paperwork. If everything is in order, the DMV will send you to the CHP with your bike to be inspected. The inspections are where the rubber hits the road. Until Jan. 1, 2012, it comes down to you and your bike and the inspectors at the CHP. It’s up to them whether you get your registration. “You might draw a CHP inspectror who happens to be an antique m/c enthusiast”, he suggested (off the record).
    After Jan. 1, 2012 all motorcycles in California will be required to be smog tested. (UNLESS THE AMA STEPS IN AND FIGHTS TOOTH & NAIL for replica motorcycles to be judged on the emissions output of the year of representation. i.e; A 1957 Panhead didn’t vent the crankcase through the carburetor.) The anonymous DMV agent suggested that the AMA might use the language in Section G. as an example and any 2012 smog testing would not apply to kit builders.

    Whatever the outcome, it is clearly in your best interest to make an appointment with the DMV asap. He said there was a CHP vehicle inspection backlog waiting list today, of 3 months.

  28. 28 Paul Holdsworth Aug 29th, 2011 at 12:42 pm

    Someone tell Captain Nemo that HIS bike is ready…………………………..

  29. 29 nuno maroco Aug 29th, 2011 at 2:19 pm

    Simple incredible, like it alot.

  30. 30 Kirk Perry Aug 29th, 2011 at 2:59 pm

    This the most thorough explanation of Hi-Lo adjusting a Linkert carburetor I’ve ever read:

  31. 31 Kiwished Aug 30th, 2011 at 12:33 am

    I am still looking for this hanging clutch cable, Me Take another look before the comments or maybe you really don’t know! Great work on this bike swoopy cables rule.

  32. 32 me Aug 31st, 2011 at 4:14 pm

    @Kiwished. I took another look and I still don’t like the cables.

  33. 33 poppymann Sep 7th, 2011 at 2:48 pm

    Shinyo is the best. My sporty wears nothing but a smoothly sanded steel finish that took a lot of time and handwork. I can’t say I reached a Zen-like state, but Im proud of the work.

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Cyril Huze