Is it ok to screw in cassette lockring without torque wrench
#26
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i repair bikes owned by other people. your assumptions are amusing, but may cause problems... your wordings are not specific as to what others should do... when i pointed this out, you told me to "chill"... which is yet another bad assumption on your part.... if i had been "hot" about the problem you have, you would have been informed of such
quit making bad assumptions.
quit assuming others know what you might have implied... the typical question asked on this forum comes from folks with little to no experience, and then, there are those that lurk and read other's threads on subjects related to their bike's issues.
and FYI, my ancient road bike still has the second 6 sp. freewheel ever installed on it, and that one was put on because i wanted a wider gear ratio, not because the first one was worn out... that Trek has well over 20k miles on it... it was my only transpo for about ten years, too.... one heck of a commuter bike, eh? I did buy a 7 sp. freewheel a few years ago, but the frame didn't like the width, the chain would rub the chain stay occasionally when i tested it, so i just flipped the 6 sp. back on.... it works fine, as does the sedis sport chain, original DA hubs, and Campy/Suntour Ders. A cyclone rear, and neuvo record front... the cyclone got treated to newer rollers recently.... and i installed a set of teflon Jagwires at at the same time... the ancient Elephant cables were still fine, but i wanted to change up the coloring on my trek.
guess i do know how to maintain my personal bikes, eh?
"really tight" is not a good way to tell someone how to install a lock ring... pretty vague, actually.... as is "one click, then one more click"... at least you saw fit to include a qualifier about your lack of strength... some may not comprehend your weakness correctly, though.
and since you seem to have not run into a stuck lock ring on a not well maintained bike, you become the "odd man out"... they happen... broken spacers happen... split shims happen... stripped out lock ring threads happen... etc. and then, there's an occasional cross-thread... they can get interesting to correct... and one came thru my shop with a lock ring that had been installed by hammer and screwdriver... it wasn't tight enough, btw... i filed the splines slightly on that freehub, then cranked the lockring down using my usual force on it... still working fine, last i heard.... ;-)
a 24" breaker bar might be what someone uses to drive a 1" socket.... and they may have strength way beyond yours. "Monkey Fist" is, unfortunately, alive and well in the bigger world... trust me on that.
quit making bad assumptions.
quit assuming others know what you might have implied... the typical question asked on this forum comes from folks with little to no experience, and then, there are those that lurk and read other's threads on subjects related to their bike's issues.
and FYI, my ancient road bike still has the second 6 sp. freewheel ever installed on it, and that one was put on because i wanted a wider gear ratio, not because the first one was worn out... that Trek has well over 20k miles on it... it was my only transpo for about ten years, too.... one heck of a commuter bike, eh? I did buy a 7 sp. freewheel a few years ago, but the frame didn't like the width, the chain would rub the chain stay occasionally when i tested it, so i just flipped the 6 sp. back on.... it works fine, as does the sedis sport chain, original DA hubs, and Campy/Suntour Ders. A cyclone rear, and neuvo record front... the cyclone got treated to newer rollers recently.... and i installed a set of teflon Jagwires at at the same time... the ancient Elephant cables were still fine, but i wanted to change up the coloring on my trek.
guess i do know how to maintain my personal bikes, eh?
"really tight" is not a good way to tell someone how to install a lock ring... pretty vague, actually.... as is "one click, then one more click"... at least you saw fit to include a qualifier about your lack of strength... some may not comprehend your weakness correctly, though.
and since you seem to have not run into a stuck lock ring on a not well maintained bike, you become the "odd man out"... they happen... broken spacers happen... split shims happen... stripped out lock ring threads happen... etc. and then, there's an occasional cross-thread... they can get interesting to correct... and one came thru my shop with a lock ring that had been installed by hammer and screwdriver... it wasn't tight enough, btw... i filed the splines slightly on that freehub, then cranked the lockring down using my usual force on it... still working fine, last i heard.... ;-)
a 24" breaker bar might be what someone uses to drive a 1" socket.... and they may have strength way beyond yours. "Monkey Fist" is, unfortunately, alive and well in the bigger world... trust me on that.
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Good to know, thanks! I did about 6 clicks last time and stopped. So push until you let out a fart, got it
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I'll suggest a breaker bar when you remove it, avoid worse surprises....
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Nice reading here, which got me to thinking (dangerous at 70). I have 5 sets of wheels, all with new HG cassettes hubs (converted from UG this past winter). Dug around in my old tool room, and what did I find, my old beam torque wrench and a 1" socket. Dam, now I can properly tighten all those new cassettes. KB
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Have an assistant firmly hold the wheel upright on the floor. Stand on a bathroom scale and put a wrench on the lock ring tool in the 3 o’clock position. Hold the wrench with your hand one foot from the center of the lock ring tool. Push down on the wrench until the scale read 30 pounds less than you did. If you do not have a wrench long enough, use this equation to get the targeted scale reading using a shorter wrench. Pounds = 30/ wrench length in decimal fraction of a foot.
The rear axle nuts on air cooled VW Beetles required tightening torque of 350 foot pounds. Few mechanics had torque wrenches that went that high so bathroom scales were common in VW repair shops.
The rear axle nuts on air cooled VW Beetles required tightening torque of 350 foot pounds. Few mechanics had torque wrenches that went that high so bathroom scales were common in VW repair shops.
Last edited by flanso; 07-16-17 at 03:53 PM. Reason: clarify
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It had a two-piece axle shafts with splines and a woodruff key to hold them together.
Torque spec was 250 ft-lbs.
So I would put a 1/2" breaker bar on it;
Slip a pipe over that;
Put a mark on the pipe where my weight needed to be to generate 250 ft-lbs.
Then balance on one foot on the mark to apply the torque.
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I just tried it with a torque wrench too, Park Tool TW-6.2. About 6-8 clicks With leverage (14" tool) it required much less grunt than an 8" adjustable wrench. It actually gave me second thoughts so I unscrewed it and rechecked just to make sure. Like hokiefyd mentioned too, its not gorilla tight - just good and tight.
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I have the Park Tool SBS-1 set that comes with a 1" socket. So torque wrench>1" socket>FR5.2 cassette lockring tool.
SBS-1 Socket and Bit Set | Park Tool
(The 1" socket fits various Park Tool Freewheel, Cassette Lockring, and Bottom Bracket tools)
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By any chance do you think a (much) cheaper Harbor freight tool would do the trik?
3/8" torque wrench
https://www.harborfreight.com/3-8-ei...rench-807.html
Sockets and bit set
https://www.harborfreight.com/21-pc-...set-61954.html
3/8" torque wrench
https://www.harborfreight.com/3-8-ei...rench-807.html
Sockets and bit set
https://www.harborfreight.com/21-pc-...set-61954.html
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Probably, at least when new. I wouldn't do anything with that which needed precision (like tightening a head gasket, or a stem bolt), but I'd expect the HF tool to get you between 25-40 lbf. That should be in the range between too loose/will unscrew and oops/stripped it on a cassette lockring.
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Duralast 3/8" Female to 1/2" Male
If you have a 1" socket with a 3/8" drive, then you wouldn't need any other tools (besides the lock ring tool itself).
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FWIW I installed my old cassette on a new wheel, just went out to give it a try. Heard clink clunk, clink clunk like ratcheting in the middle of traffic..! Came back and checked the torque again, good it didnt move (maybe new parts metal rubbing? shrug). After about 8-10 times the sound went away. I did about 20 miles slowly at first then went up to about 40mph - all good. Yeah, you dont have to have a torque wrench but it gives me a peace of mind.
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I've twice had a cassette re-installed at an LBS after hub service come loose while I was riding. I always use a torque wrench to install cassettes. I've never had a cassette I installed come loose. I assume overconfidence in wrenching ability on the part of LBS mechanics. Now if I need something done on a hub that I can't do, I R&R the cassette myself. 40 nm feels like a lot to me.
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Finger tight has always worked for me.
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Riding friends have had shop installed cassettes come loose. Wonder if torque wrenches are normally used for this by shops?
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Have you confirmed the correct unit of measure? 40 Nm is about 29 lb*ft, which is about as much torque as you'd put on an oil pan drain bolt -- or even less than that in many cases:
https://www.hollonoil.com/OCH/Engine%...ue%20Chart.pdf
In fact, I own two Honda V-6s, and 29 lb*ft is the exact torque spec for my oil pan drain bolts. So the cassette lock ring on my bike uses the exact same torque spec as my oil pan drain bolts.
These lock rings truly aren't meant to be muscled on. Maybe you were using 40 lb*ft?
https://www.hollonoil.com/OCH/Engine%...ue%20Chart.pdf
In fact, I own two Honda V-6s, and 29 lb*ft is the exact torque spec for my oil pan drain bolts. So the cassette lock ring on my bike uses the exact same torque spec as my oil pan drain bolts.
These lock rings truly aren't meant to be muscled on. Maybe you were using 40 lb*ft?
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Have you confirmed the correct unit of measure? 40 Nm is about 29 lb*ft, which is about as much torque as you'd put on an oil pan drain bolt -- or even less than that in many cases:
https://www.hollonoil.com/OCH/Engine%...ue%20Chart.pdf
In fact, I own two Honda V-6s, and 29 lb*ft is the exact torque spec for my oil pan drain bolts. So the cassette lock ring on my bike uses the exact same torque spec as my oil pan drain bolts.
These lock rings truly aren't meant to be muscled on. Maybe you were using 40 lb*ft?
https://www.hollonoil.com/OCH/Engine%...ue%20Chart.pdf
In fact, I own two Honda V-6s, and 29 lb*ft is the exact torque spec for my oil pan drain bolts. So the cassette lock ring on my bike uses the exact same torque spec as my oil pan drain bolts.
These lock rings truly aren't meant to be muscled on. Maybe you were using 40 lb*ft?
#45
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Have you confirmed the correct unit of measure? 40 Nm is about 29 lb*ft, which is about as much torque as you'd put on an oil pan drain bolt -- or even less than that in many cases:
https://www.hollonoil.com/OCH/Engine%...ue%20Chart.pdf
In fact, I own two Honda V-6s, and 29 lb*ft is the exact torque spec for my oil pan drain bolts. So the cassette lock ring on my bike uses the exact same torque spec as my oil pan drain bolts.
These lock rings truly aren't meant to be muscled on. Maybe you were using 40 lb*ft?
https://www.hollonoil.com/OCH/Engine%...ue%20Chart.pdf
In fact, I own two Honda V-6s, and 29 lb*ft is the exact torque spec for my oil pan drain bolts. So the cassette lock ring on my bike uses the exact same torque spec as my oil pan drain bolts.
These lock rings truly aren't meant to be muscled on. Maybe you were using 40 lb*ft?
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#46
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I've never had a cassette lock ring come loose.
I have never used a torque wrench either.
The basic idea is to tighten fasteners just enough so they don't come loose.
That said, it would be very difficult to over tighten a steel freehub with a steel lockring.
I have never used a torque wrench either.
The basic idea is to tighten fasteners just enough so they don't come loose.
That said, it would be very difficult to over tighten a steel freehub with a steel lockring.
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That's cool -- many don't.
I'm not implying anything. I simply asked if the correct unit of measure was used. It was a suggestion from one cyclist to another. I have found that I have mixed up inch pounds and foot pounds with something; it's a mistake that I've committed myself in the past.
I agree -- 40 Nm is certainly more than two clicks from the lock ring.
I'm not implying anything. I simply asked if the correct unit of measure was used. It was a suggestion from one cyclist to another. I have found that I have mixed up inch pounds and foot pounds with something; it's a mistake that I've committed myself in the past.
I agree -- 40 Nm is certainly more than two clicks from the lock ring.
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That's cool -- many don't.
I'm not implying anything. I simply asked if the correct unit of measure was used. It was a suggestion from one cyclist to another. I have found that I have mixed up inch pounds and foot pounds with something; it's a mistake that I've committed myself in the past.
I agree -- 40 Nm is certainly more than two clicks from the lock ring.
I'm not implying anything. I simply asked if the correct unit of measure was used. It was a suggestion from one cyclist to another. I have found that I have mixed up inch pounds and foot pounds with something; it's a mistake that I've committed myself in the past.
I agree -- 40 Nm is certainly more than two clicks from the lock ring.
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