Selden Inner Forestay Fitting, Nose Tang Ø8–10 mm — Instructions
INSTRUCTIONS
Drilling dimensions and fitting procedure for the Selden 517-914 (-03 to -06) nose-tang inner forestay fitting for Ø 8-10mm stays on untapered masts.
DocumentSelden Inner Forestay Fitting, Nose Tang Ø8–10 mm Instructions
FormatPDF · 2 pages · 0.1 MB
LanguageEnglish
Tools Needed
Discontinued model – documents and spare parts as printed.
- Marker pen, 20 mm hole saw, ruler, jig saw, drill, thin deburring file
- Ø 6.5, 8.0 & 9.0 mm drill bits, screwdriver, locking adhesive
- For the guard clamp: Ø 4.9 mm drill bit, Ø 2.5 mm mandrel, pop rivet tool, adjustable spanner, hammer, jaw vice
Fasteners
- 2 screws MRT Ø 8 x 16
- 2 pop rivets LD 650 (Ø 4,8 x 12,7) for the guard clamp
Only valid for assembly on untapered masts.
Hole Pattern (not to scale)
Six holes on the centreline of the mast front, measured upward from the lowest hole (0), which sits 65 mm below the stay attachment point.
| From the lowest hole (DOWN) upward | Hole |
|---|---|
| 0 | Ø20 |
| 25 | Ø9 |
| 44 | Ø8 (end of slot) |
| 188 | Ø8 (other end of slot, 8 mm wide cut-out) |
| 229 | Ø20 |
| 254 | Ø9 |
All distances in mm, measured from the lowest hole (0) toward the masthead, as on the dimension sketch. The sketch is marked "not to scale": use the figures, not the drawing.
Fitting Procedure
- Protect the parts of the fitting that touch the mast extrusion against corrosion.
- Mark a point 65 mm below the stay attachment point: this is the lowest hole.
- Draw a line on the centre of the mast front, parallel to the mast axis, and mark the five remaining holes from the lowest one.
- Pre-drill Ø 6.5 mm, then drill out to the sketch dimensions.
- Join the outer edges of the two Ø 8 mm holes with straight lines; saw along their inner edges so the cut-out is 8 mm wide.
- De-burr, smooth any saw notches with the file.
- Fit the fitting and screws with locking adhesive; pull it into position with a thin cord if far from the masthead.
- Fit the guard clamp if halyards could catch on fitting, toggle or terminal: bend it across the fitting, drill Ø 4.9 mm and rivet.
- For a sail-carrying stay insert a toggle between fitting and stay, centred with the enclosed washers.
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