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Torque Specs

Old 09-09-23, 08:48 PM
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Torque Specs

Does anyone happen to have a torque chart in nm for bicycle size titanium bolts?

TIA
Charlie
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Old 09-09-23, 09:12 PM
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Which titanium bolts? Crank, derailleur, water bottle?
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Old 09-09-23, 09:19 PM
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Found THIS on a quick search. There must be useful information available on the web...
HERE is another one. Looks like the torques are similar for stainless steel and titanium at a glance.
(Don't take this as expert advice!)

Last edited by sweeks; 09-09-23 at 09:23 PM.
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Old 09-09-23, 11:04 PM
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Be cautious though.. just because a Bolt's max torque is higher, does not mean that the thing it's Attached to, or Threaded Into, is suddenly stronger...
Seat Clamps, Steering Stems, Carbon Fiber ANYTHING, and Any part with Threads in Aluminum easily come to mind......
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Old 09-10-23, 07:14 AM
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Originally Posted by sweeks
Found THIS on a quick search. There must be useful information available on the web...
HERE is another one. Looks like the torques are similar for stainless steel and titanium at a glance.
(Don't take this as expert advice!)
Exactly what I was looking for. Many thanks!
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Old 09-10-23, 07:38 AM
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Also note that all Ti bolts are not the same strength. Cheapie bolts from unknown sources can be significantly weaker.
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Old 09-10-23, 10:38 AM
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Speaking of titanium, I used to get various titanium fasteners from Toronto Cycles, and was quite happy with their products. Back in the early pandemic (March, 2020) the site shut down operations. Now I see that some pages appear to be working normally, while others are still in "red". Has anyone ordered from this outfit recently?

Stainless steel (L) and titanium (R) chainring hardware. Ti doesn't corrode... nice for winter commuting.
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Old 09-10-23, 12:18 PM
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the Ti bolt i've always wanted is a Gooseneck Draw Bolt, paired with an Aluminum Draw Wedge.
the usual Cast iron wedges and steel bolts weigh a LOT.

i'd think Eroica Weight Weenies would be lining up to buy them.
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Old 09-10-23, 03:08 PM
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Originally Posted by sweeks

Stainless steel (L) and titanium (R) chainring hardware. Ti doesn't corrode... nice for winter commuting.
Aluminum chainring bolts donít corrode, are lighter than either stainless or titanium, and are cheaper.
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Old 09-10-23, 03:13 PM
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Originally Posted by smd4
Aluminum chainring bolts don’t corrode, are lighter than either stainless or titanium, and are cheaper.
Aluminum corrodes if it gets salt on it. I'm talking about commuting in Chicago in the winter... salty slush is everywhere.
You can actually see some corrosion on the "stainless" bolts.
Besides, I like the look of titanium and don't care about the weight difference.
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Old 09-10-23, 03:14 PM
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Right.
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Old 09-10-23, 03:37 PM
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I like the look of Titanium too. But you canít see chainring bolts.
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Old 09-10-23, 05:21 PM
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Originally Posted by choddo
I like the look of Titanium too. But you can’t see chainring bolts.
You're right! I can't see mine either...


... unless I look at them!



The crank-fixing bolts are Ti as well, and they haven't corroded after several winters. (Different crankset; same hardware.)
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Old 09-10-23, 05:41 PM
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Ti bolts that came in 3T stems tended to break all the time. Stem bolts would not be one I'd choose to replace.
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Old 09-11-23, 12:37 AM
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Originally Posted by sweeks
You're right! I can't see mine either...


... unless I look at them!
Haha. Well if you will have THAT crankset They do like nice.
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Old 09-11-23, 07:43 AM
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Originally Posted by maddog34
the Ti bolt i've always wanted is a Gooseneck Draw Bolt, paired with an Aluminum Draw Wedge.
the usual Cast iron wedges and steel bolts weigh a LOT.

i'd think Eroica Weight Weenies would be lining up to buy them.
Ebay
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Old 09-11-23, 07:45 AM
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Originally Posted by sweeks
Speaking of titanium, I used to get various titanium fasteners from Toronto Cycles, and was quite happy with their products. Back in the early pandemic (March, 2020) the site shut down operations. Now I see that some pages appear to be working normally, while others are still in "red". Has anyone ordered from this outfit recently?

Stainless steel (L) and titanium (R) chainring hardware. Ti doesn't corrode... nice for winter commuting.
Their closing was really unfortunate. I'll have to check it out again. Strangely, I was just thinking about them a couple days ago.

thanks
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Old 09-11-23, 08:08 AM
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Originally Posted by choddo
But you canít see chainring bolts.
Seriously?
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Old 09-11-23, 08:44 AM
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Originally Posted by smd4
Seriously?
Sorry I was being very "Shimano recent chainset design" blinkered.
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Old 09-11-23, 10:51 AM
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Originally Posted by Steel Charlie
Ebay
just looked... by golly, there is now a 150mm draw bolt and aluminum 21.8mm wedge, offered separately by the same seller, in the same listing... with separate Shipping charges.... $54 total.... Weight shaved? 40 grams, 20g per part, roughly.
If the second shipping charge could be dropped, the cost drops to $48.50.... $1.20 or so per gram... that's less than many popular CF weight loss items.

last time i looked, the longest bolt offered was 110mm.

https://www.ebay.com/itm/17272957051...Bk9SR-avytHQYg

Last edited by maddog34; 09-11-23 at 11:02 AM.
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Old 09-11-23, 03:16 PM
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Originally Posted by maddog34
the Ti bolt i've always wanted is a Gooseneck Draw Bolt, paired with an Aluminum Draw Wedge.
Like this?
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Old 09-11-23, 08:21 PM
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Originally Posted by grumpus
no.. like one that's actually in stock.

"Unavailable" and "Delayed delivery, A Bespoke item that must be custom made" was what their Cart said....

thanks anyway.
*see my post above this if interested in a Ti drawbolt and aluminum wedge*

now... back to demanding a refund for a poorly machined der. hanger that will need to be custom reshaped to fit my Specialized Enduro...2mm extra material along the front face is NOT acceptable..... i'm just glad the customer didn't have to wait for it to arrive... took 11 days to arrive... and then it 's a non-fit... ! The dirt is PERFECT right now too... nice damp loam, no mud. PERFECT. luckily, i have other options.
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Old 09-12-23, 05:26 PM
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Originally Posted by Steel Charlie
Does anyone happen to have a torque chart in nm for bicycle size titanium bolts?
Torque specs for actual bicycle fasteners: Section 4

https://www.parktool.com/en-us/blog/...s-and-concepts
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Old 09-12-23, 05:33 PM
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Originally Posted by maddog34
the Ti bolt i've always wanted is a Gooseneck Draw Bolt, paired with an Aluminum Draw Wedge.
the usual Cast iron wedges and steel bolts weigh a LOT.
these are available depending on which stem you're looking for. Most stem wedges are aluminum, at least on high(er) quality stems.

Nitto for example.

/markp
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Old 09-12-23, 05:38 PM
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also note that for fasters used on bikes, the maximum torque will be limited by what the bolt is threaded into.

Like the stem face bolt or waterbottle bolt. I'd suggest no more than 6-8 Nm on stem face bolts and probably 4-6 on waterbottle bolts.

/markp
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