"Mini *!**Outboard *!**Motor" *!** First Impressions

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • daveives
    Senior Member
    • Jun 2009
    • 109
    #1

    "Mini *!**Outboard *!**Motor" *!** First Impressions

    http://www.offshoreelectrics.com/pro...prod=OSE-80980

    Buying experience - Rates a 3S for "Steve's Sudden Service"
    Ordered Friday 10AM, delivered Monday 11AM
    I was so impressed that I bought another the day the first one arrived
    Ordered Monday 10:30 PM, delivered Thursday 11AM

    Build quality - Phenomenal, a work of art!
    The screws holding the lower unit together protrude slightly,
    but they are above the waterline which goes through the
    prop centerline

    Value - Includes a motor and superb CAD work and finish
    Very modestly priced at $75
    Another source wants $80 plus $9.50 for the prop

    Size - About a third the weight of most electric outboards
    so it is appropriate for a total weight of about 26 to 32 ounces
    This fills a niche with only plastic alternatives
    The motor is rated at about 3S lipos (12 volts) and 400 watts
    with rough equivalents selling for $15 to $35 on the Internet

    Modifications -
    An extra spare cable/shaft is recommended since there is only
    one grub screw holding the cable/shaft in place
    Liberal use of "Corosion-X" is recommended

    A plastic prop @ $1.45 is recommended for initial testing.
    http://www.offshoreelectrics.com/pro...?prod=oct-x431
    http://www.offshoreelectrics.com/pro...?prod=oct-y534
    http://www.offshoreelectrics.com/pro...?prod=oct-y531 (currently out of stock)
    Last edited by daveives; 08-02-2012, 02:12 PM. Reason: IPAD Notes Formatting Problem
    Tags: None
    • jcald2000
      Senior Member
      • May 2008
      • 774
      #2
      What Diamenter is the flex shaft cable?

        Comment

        • daveives
          Senior Member
          • Jun 2009
          • 109
          #3
          Mini Outboard Flex Shaft & Mounting Plate Measurements

          Shaft starting at motor end:
          square flex .101" of length ~ 15mm
          round flex .122" ~ 3.08mm
          bearing section .155" ~ 3.95mm of length ~ 23mm
          prop shaft .123" of length ~ 23mm
          136mm overall length

          Mounting Plate:
          Milled holes to allow vertical adjustment, bolt centers spaced horizontally at ~ 24mm
          Spaced vertically slot goes from ~ 12mm to ~ 24mm bolt center spacing
          Bolt thread OD ~ 2.83mm

          The Graupner GTX-500 bolt horizontal spacing is about 22mm to 23mm

            Comment

            • Vortech C5
              Member
              • Feb 2011
              • 94
              #4
              I am also very impressed by this outboard. What tunnel hulls are available for such a small set up? I can't seem to find a project for it. Thanks!

                Comment

                • daveives
                  Senior Member
                  • Jun 2009
                  • 109
                  #5
                  An H&M Micro Cat tunnel hull is suitable for this motor.

                  I have one currently fitted with a Graupner GTX-500 plastic cable drive lower unit,
                  a MEGA ACn 16/15/3 motor, a Traxxas 2065 (actually waterproof) servo,
                  and a 2S 2300mah LiPo for an overall weight of 28.5 ounces.

                  Steve's mini-outboard weighs about 1.25 to 1.50 ounces more than the Graupner,
                  but that difference is small compared to the overall weight.

                  I bought my H&M Micro-Cat and H&M Skater XL from Fine Design about six years ago,
                  and was completely satisfied. H&M is a high quality manufacturer in my opinion.
                  This Forum includes comments by others on Fine Design.

                  Type "micro cat" and "micro kat" into a YouTube search box for lots of videos.

                    Comment

                    • fatbill69
                      Member
                      • May 2012
                      • 36
                      #6
                      That is the Hor Racing outboard unit. It is the same as the tfl unit except for the cavitation plate. These units work very well, however not for modification.

                        Comment

                        • tsenecal
                          Member
                          • Oct 2009
                          • 58
                          #7
                          i too recently purchased this outboard from OSE. I have installed it on a classic MRP budlight tunnel hull. that is a vac-formed 22" tunnel hull originally powered by a 12 cell 600 size brushed motor on a proprietary OB motor made by MRP back in the late 80s to early 90s.

                          I ran it on a 3 cell lipo with a hobbyking 120 amp esc, and only got speeds in the low 20's. I will be adjusting the motor height and angle to see if i can get it going faster. at 22mph, i am only pulling 26 amps max, so there is definite room to improve performance.

                          the motor itself is apparently intended for a 400-450 size heli, it is 3000kvm, 28mm x 36mm, and has a fan built into its "top".

                          installed.jpg

                            Comment

                            • tsenecal
                              Member
                              • Oct 2009
                              • 58
                              #8
                              I adjusted the motor so it is 1/8" higher, with a slight nose down angle. also ran with a smaller (2200 vs 3700) 3s 35c battery, and tried 3 different props:

                              stock prop: 27.3 mph, octura x632: 26.9 mph, grimracer 36x55: 30 mph. in all setups, i pulled between 66 and 52 amps max, with an average draw of around 30 amps.

                                Comment

                                • tsenecal
                                  Member
                                  • Oct 2009
                                  • 58
                                  #9
                                  video of it on saturday, wind coming from the right side of the video, didn't want it to blow over, so full speed passes are from right to left... 30+mph

                                  white tunnel ose
                                  https://vimeo.com/47791861
                                  This is "white tunnel ose" by Tim Senecal on Vimeo, the home for high quality videos and the people who love them.

                                    Comment

                                    Previous template Next
                                    Working...