Reference / Cranks

Dutch Bikes' Dutch Crank Arms

Other

United States

2017–2018

https://dutchbikes.bigcartel.com/product/dutch-crank

"Dutch Crank Arms" by Dutch Bikes

  • Overview...
  • Intended for trails, park, street, etc.
  • Hand made by Mike Maloney - Dutch Bikes' owner, designer, fabricator, and welder
  • Available in very limited quantities - possibly as few of 12 sets altogether
  • A couple small run of 175mm long arms were made in 2017 and 2018
  • The prototype set was made in April-May 2015 - this set has been used by Mike for the past 3 years with no issues
  • When not making BMX frames and parts in his spare time, Mike is a welding specialist for a very large R&D company
  • In addition to making crank arms, Dutch Bikes sells custom made-to-order 20"/22" BMX and 24"/26" DJer frames and 20" forks
  • Details...
  • Manufactured in New Jersey (USA) with components that were machined in Sacramento, CA
  • Only compatible with 22mm Profile Column spindles - sold separately by Profile Racing in chromoly ($109.99) and titanium ($169.99)
  • Only compatible with 22mm 48-spline spline drive sprockets - not compatible with bolt-on sprockets
  • MSRP: $160.00 USD (two welded arms and two brass spindle bolts) + s/h + applicable taxes
  • Specs...
  • Material: 4130 chromoly
  • Arm length: 175mm
  • Finish: powder coated clear
  • Bolts: made out of brass, M17x1.25mm thread, 6mm broach
  • Crank Parts...
  • Made from components that were manufactured by Solid Bikes
  • Each crank arm consists of a swaged crank arm, a broached spindle boss, and a pedal boss
  • The cost of raw materials needed to make a crank set comes out to $52.00 USD + s/h (two complete arms) - not including weld consumables, labor, and markup
  • Swaged Crank Arms...
  • Material: 4130 chromoly tubing
  • Shape: tapered from 1.125" to 0.875"
  • Thickness: 0.065" thick
  • Length: 6.625" long
  • Price: $12.00 each
  • Broached Spindle Boss...
  • Material: 4130 chromoly tubing
  • Forming: CNC turned
  • Inside diameter: 22mm
  • Number of Splines: 48 splines
  • Compatibility: 22mm Profile Column-style spindles
  • Other: counter bored front for flush fit bolts
  • Price: $10.00 each
  • Pedal Boss...
  • Material: 4130 chromoly tubing
  • Forming: CNC turned
  • Outside diameter (OD): 0.750"
  • Inside diameter (ID): 9/16"
  • Length: 1"
  • Compatibility: pedals with 9/16" axles
  • Other: tapped for 9/16" x 20 TPI left and right hand threads
  • Price: $4.00 each
  • Welding...
  • Weld process: TIG (tungsten inert gas), also know as GTAW (gas tungsten arc welding)
  • Welding wire (AWS classification): ER70S-2
  • Tensile strength: 70,000 psi
  • Technique: weld a quarter at a time on each end, then wait until the temperature is below 200 °F before starting again
  • Pulse: yes
  • Purge: no
  • Other...
  • 6 month full warranty (part replacement)
  • 1 year limited warranty (prorated crash replacement)
  • Made in U.S.A.

Sources for this Reference Page

In my never-ending pursuit to find companies and individuals who produce quality, limited production or custom BMX components/parts/frames, I came across @defconfour on Instagram a little over a year ago.  Seeing that he specializes in welding stainless steel and chromoly, offers 100% custom BMX frames, and also makes his own forks, crank arms, and sprockets, I instantly got excited.  Digging deeper, I learned that he also resides in the north east and rides trails, so I quickly decided that I needed to run something from him on my bike.  Having recently ordered a custom sprocket and frame/fork set, that quickly narrowed it down to Dutch Crank Arms for me.

Mike Maloney is the brains behind Dutch Bikes; Mike's the company's sole owner, designer, fabricator, and welder.  In addition to crank arms, Dutch Bikes sells made-to-order 20"/22" BMX frames (starting at $500.00 USD), 24"/26" DJ frames (starting at $550.00 USD), and 20" BMX forks ($200.00 USD).  Since the company is a true one-man operation and it's not Mike's primary source of income (by trade, he's a welding specialist for a very large R&D company), it often takes a while for new products to roll out - often years - but when they do, there's no equal in terms of aesthetics and quality.

To keep costs down, Dutch Bikes' prototype parts are first proof tested, and it's only after years of real-world riding use and positive lab test results that production parts are made and available for purchase by the general public.  As way of example, even though Mike made his first frame in 2010, he didn't start selling customs until at least 2014.  Similarly, the first fork was made in 2012, lab tested in 2014, and it wasn't until 2015 before a production version was available.


Page Created: 8/16/2018  ----->  Info Updated: 8/17/2018
** http://bmxmuseum.com/reference/user/55510 **

Submitted by pharv85 (View all 395 posts)

  • Posted 8/16/2018
  • Updated 8/17/2018
  • 284 views
  • Comments

    Oh man! I’ve been looking for a way to post up Mikes stuff since he made me a Sprocket!
    Thx fer the link!
    J
    Wastedlifecycles

     

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