Bavaria Yacht Info

Member Forums => Bavaria Yacht Help! => Topic started by: Seagoon on June 03 2017, 09:11

Title: Bavaria - keel bolt torque settings
Post by: Seagoon on June 03 2017, 09:11

Does anyone know if Bavaria publish keel-bolt torque settings?

I have a 2002 Bavaria 38 and it appears mine need a tweak.

I can find nothing specific online, just generic information such as http://www.engineershandbook.com/Tables/torque.htm

Title: Re: Bavaria - keel bolt torque settings
Post by: Scorcher IV on June 03 2017, 10:20

Hi I found this on Sailnet Community, alternatively give Clipper marine a call they should be able to give you the information.

Keel bolt Torque Specifications.
DACROMATISED STEEL BOLTS TYPE 8-8.

DIAMETER M14 M20 M24 M30
TORQUE in M.Kg - minimum 5 13 23 45
TORQUE in M.Kg - maximum 9 27 46 90
TORQUE in ft.lb ? minimum 36 94 166 325
TORQUE in ft.lb ? maximum 65 195 333 651

TABLE 6.5.2
STAINLESS STEEL BOLTS TYPE A4-70 and A4-80

DIAMETER M14 M20 M24
TORQUE in M.Kg - minimum 5 16 28
TORQUE in M.Kg - maximum 11 32 55
TORQUE in ft.lb ? minimum 36 116 203
TORQUE in ft.lb ? maximum 80 231 398

TABLE 6.5.3
STAINLESS STEEL BOLTS TYPE A4-55

DIAMETER M30 M36 M42
TORQUE in M.Kg - minimum 19 33 52
TORQUE in M.Kg - maximum 38 65 104
TORQUE in ft.lb ? minimum 137 239 376
TORQUE in ft.lb ? maximum 275 470 752

Title: Re: Bavaria - keel bolt torque settings
Post by: Symphony on June 03 2017, 11:37

Why do you think they need a tweak? In normal use they do not move, so if they are loose then something has changed to cause that. So first investigate for damage before you start tightening. The studs are M24, I think, and you will have difficulty in reaching the required torque by hand without a long lever wrench.