And again. . .std commands the money. Do a special for you but don't expect to get your money back
Don't you look at my accountant.
He's the only one I've got.
Found that out when I rebuilt my 85 slabbie. It was absolutely mint, couldn't even bring myself to ride it, but I painted it solid red. The paint was perfect but for the same or similar money I could have done it back to original with decals and it would have been worth another $2k at least more than I sold it for. Cum dunt.
Only a Rat can win a Rat Race!
Two reasons: strength (as already posted)
Stainless steel fasteners have about 1/3rd the strength of high tensile steel (grade 12.9 is the good stuff)
Second reason is galvanic corrosion. Stainless in direct contact with aluminium will slowly but surely cause the ally to get attacked.
Yep but that was hardly my point. I was doing a full rebuild on a bike that was not mint.
Only a Rat can win a Rat Race!
Ho ho. Thanks for that.
Presumably its why copper anti seize is a thing. Similar with Titanium into aluminium or steel I understand but correct me if I am wrong.
Also: I love the fact that Mitre 10 has bolts including high tensile (8.8 I think) but holy crap, do they charge for them or what?
I thought elections were decided by angry posts on social media. - F5 Dave
AS I understand it, the higher the tensile strength, the more brittle/less malleable the fastener will be.
I met a guy who'd been in the industry for years, many years ago when one of my bikes had a habit of breaking sprocket bolts. He cautioned against using 12.9's as they were more brittle.....and a good 8.8 in most situations is fine. He also cautioned against using zinc plated bolts as they can create a torqueing issue, as the zinc will add drag and while you may tighten to a measured x fl/lbs the clamping force created by the bolt will be less. He suggested non plated bolts, of 8.8 tensile and 243 Loctite to help lube and add a slight amount of shock absorbing capability or lightly oiled and a reasonable torque setting of c 20ft/lb on a M8 bolt
Bolts were breaking or coming loose in one to two races, yet they were lock tabbed etc. The lack of clamping force was not matting the sprocket against the hub well, compounded by a 6mm alloy spacer behind the sprocket, which was causing tension to subside..... (Sprockets don't carry the force in shear!). Got the clamping aspect sorted and the problem went away....
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