iStart Automatic Sailboat Race Starter Housing Sled
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Estimated printing price per file
€13.01 – €15.90 net (excluding VAT)
For file: sled_0.4n_0.2mm_PLA_MK4IS_8h59m.gcode
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Average indicative estimate: €14.45 excluding VAT (range midpoint).
- Weight reported by the author
- 295 g
- Print time reported by the author
- 8.98 hr
- Source material
- PLA
- Estimate material
- PLA
- Estimate printer
- Bambu Lab P1S - 0.4 nozzle
- Estimate process
- 0.20mm Standard
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Houses the internals of a Balboa racing iStart Automatic Race Starter unit for easier removal/service.
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Updated at source:
Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Public Domain
The Balboa Racing iStart is a common fixture in small boat racing. Having used one both coaching, and in community sailing programs, I've also had to service a few of them. Batteries are intended to be “replaceable” by the manufacturer, but the contents are all glued into the housing, and replacing them requires breaking the glue with isopropyl, which takes a fair amount of prying and scuffed knuckles. Instructions are available at Balboa Racing if the site is up, but I've also duplicated them here as there have been periods of time I have been unable to reach them, and no duplicates exist.
If you have to service/replace your SLA‐1270, follow the OE instructions, but when replacing, glue the power unit to the sled instead.
The sled will require a few holes drilled, as I got lazy during modeling, and because the unit is not intended to be glued back into the housing, some longer horn mounting screws need to be acquired. These pass through the rivnuts that mount the horns, and into the sled to positively retain it inside the housing. You can also run a small bead of hot glue to tie the sled to the housing between the front panel and control board, as this will retain the sled and is far more easily broken if service is again required.
Materials needed:
- 2x 1-¼ length coarse thread ¼-20 screws
- Hot glue
- Drill bits and drill
- Printed sled
Assembly Instructions:
- Complete battery replacement/service according to manufacturer instructions
- Remove the horns
- Assemble sled (if necessary)
- Clean housing interior, ensure sled enters/removes smoothly
- Mark/drill necessary holes.
- Horn mounting screws
- Vent
- Control board screws
- Front panel screws
- Glue power unit into the sled
- Assemble control board, power unit, front panel, and vent
- Re-assemble air line and fitting
- Slide sled into housing
- Re-mount horns, and ensure sled is retained
- Hot glue front of sled (optional)
- Tape front panel perimeter seal
Done! Ensure you leave the unit on a charger when not in use.
The print I installed into my unit is deeply flawed. Layer shifts early in resulted in a really low quality item, but I filed and hammered it together under time pressure.