mad-butcher
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| posted on 23/1/08 at 08:14 PM |
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what grade bolts for prop adapter
evening all
What grade bolts do I need to fasten the prop to the prop adapter, got some marked A1 8 but not sure if they are strong enough
Tony
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IDONTBELEIVEIT
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| posted on 23/1/08 at 08:17 PM |
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hi,either A2 stainless steel or 8.8 mild steel BZP with nylocs!!!!!!!!just my 2 peneth
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twybrow
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| posted on 23/1/08 at 08:22 PM |
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I would say 8.8 absolute minimum, with thread lock! Not a bolt you want coming undone/shearing in a hurry!
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SeaBass
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| posted on 23/1/08 at 08:29 PM |
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I wouldn't trust commonly available stainless for that application personally.
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IDONTBELEIVEIT
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| posted on 23/1/08 at 08:35 PM |
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A2-80 are as strong as 8.8 mild steel without being brittle but ultimately you would use 12.9 m/s to be really sure
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zxrlocost
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| posted on 23/1/08 at 08:40 PM |
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normal 8.8 with nyloc nuts on the end and nyloc liquid aswell if I was you
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foes
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| posted on 23/1/08 at 08:42 PM |
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i've used cap heads 12.9 grade, as said you don't really want to skimp on prop bolts....
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TimC
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| posted on 23/1/08 at 08:59 PM |
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True - but harder bolts also don't knit as well as 8.8!
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mackei23b
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| posted on 23/1/08 at 09:54 PM |
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Ford use 12.9 grade for the sierra diff, if it's good enough for them, it's good enough for me!
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tomblyth
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| posted on 23/1/08 at 09:58 PM |
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agree with the Cap screw theory as that grade is used on the Driveshafts although Alley keys in my opinion are better than Torx as Allen Keys are
easier to get!
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rayward
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| posted on 23/1/08 at 10:09 PM |
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12.9 grade threadlocked, i would say
Ray
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tks
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| posted on 24/1/08 at 12:18 AM |
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8.8 does the job.
don't put stainless over there...
Tks
The above comments are always meant to be from the above persons perspective.
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cossey
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| posted on 24/1/08 at 06:41 PM |
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12.9 with high shear threadlock. and put low shear leadlock on the prop adapter nut.
http://hoverd.org/Tim/Fury/drive-body-0710a.html
what can happen if the prop comes loose. (btw that was caused by the prop adapter leaving the output shaft but loosing the bolts could have the same
effect)
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