Following the design ideas for a Hobie TI outboard motor mount from pro10is and domr.
I made a few tweaks for overall strength in ocean / offshore environments.
The main design concepts remain: - track mount
- use of full plate under the 12 in track mount
Tweaks: - Beefed up the Aluminum components 2" square tubing, 1/4" thick, 1 1/2" squire tubing 1/8" thick - (purpose overall strength)
- Slightly elevated mount (due to the 1 1/2" square tubing on top of the track) - (purpose keep free of waves)
- Use of six attachment points between the mount and the track - (purpose - added redundancy & strength)
Outboard: Suzuki 2.5 HP four stroke, short shaft.
Performance: Pleased with the overall results. Have about 35 hours of offshore sailing (Atlantic Ocean, Gulf of Mexico, Hudson River NYC, Delaware River Port of Philadelphia). Typical speeds with 1/4 throttle are in the 5-6 mph and get about 7-8 mph with half to 3/4 throttle. Good overall duration with Suzuki internal gas tank with over 1.5 hour run time (depends on throttle level). Pleased with the power & speed especially fighting strong tidal and river currents or pushing into strong head winds. Used with all-day sails running 8-10 hours with distance traveled in the 30-40 mile range. The vibration and noise are present but less than I expected and fully bearable. The mount was sturdy under the offshore conditions - all bolts and attachments show no signs of failure or loosening.
Thanks to all the ideas posted on this thread and other threads....big help in pulling this design together.
See a few photos, a video walk around the TI outboard mount and a couple links below to sails with the outboard (mostly sailing though!).
Hobie Tandem Island Outboard Motor Mount by
Jim Powers, on Flickr
Hobie Tandem Island Outboard Motor Mount by
Jim Powers, on Flickr
Hobie Tandem Island Outboard Motor Mount by
Jim Powers, on Flickr
Hobie Tandem Island Outboard Motor Mount by
Jim Powers, on Flickr
More photos here in this flickr album:
https://flic.kr/s/aHsmdYB5q1Youtube video - TI motor mount:
https://youtu.be/SUyqkqqZbkUYoutube videos - TI undersail / power with TI motor mount and Suzuki 2.5 HP outboard:
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https://youtu.be/WrwF71p_jVA -
https://youtu.be/WAhnawtgt3U