Author Topic: did you use a torque wrench to assemble your bike?  (Read 651 times)

rpwbike

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did you use a torque wrench to assemble your bike?
« on: May 03, 2021, 06:34:10 PM »
I plan to buy a 1/4 inch torque wrench to assemble my bikes properly, although I am tempted to put it together with just normal allen wrenches.

Curious how many people assembled their bike just using regular allen wrenches?

RadJohn

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Re: did you use a torque wrench to assemble your bike?
« Reply #1 on: May 03, 2021, 11:20:45 PM »
Depends on your experience level. If you've read the Rad torque chart and seen that none of the recommended values are significantly different from normal bicycle standard practices, and you have experience in applying those torques with standard hex keys, then you PROBABLY don't need to use a torque wrench (but it certainly wouldn't hurt anything, as long as it's accurate).

On the other hand, if you if you don't have that much experience, there are a couple of ways to get some:

1) Trial and error. You MIGHT eventually learn how to keep from stripping out threads and having parts fall off your bike (could take years and multiple bikes though).

2) Use a torque wrench (the preferred method of learning what specified torque values feel like).

I've found that some Rad bolt holes are a little crappy (rack & fender mounts in particular), often clogged with paint and some apparently had partial or dinged threads. If a bolt feels like it's going to exceed the recommended fully tightened torque value while your just running it down, it's better to chase the threads with a tap instead of just wrenching it in all the way. A torque wrench is an invaluable aid in learning stuff like this.

 
« Last Edit: May 05, 2021, 09:08:30 AM by RadJohn »

FortunatelyTheMilk

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Re: did you use a torque wrench to assemble your bike?
« Reply #2 on: May 04, 2021, 11:54:38 PM »
I used a regular set of Allen keys and spanners. The bolts under the centre console are challenging to remove, but the rest of the bike went together fairly easily.

Veggyhed

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Re: did you use a torque wrench to assemble your bike?
« Reply #3 on: May 05, 2021, 08:46:48 AM »
I did assemble my bike with a torque wrench. I bought it for about $70 on amazon and I've used it many times since. However it is not large enough for the rear wheel nuts.


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gadgetex

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Re: did you use a torque wrench to assemble your bike?
« Reply #4 on: May 05, 2021, 11:29:32 AM »
I bought and used a torque wrench. A Venzo bicycle specific one. But I like tools and only had a bigger wrench.  Iíve got plenty of bike mechanic experience but talked myself into it due to greater forces on an ebike.

Joel52334

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Re: did you use a torque wrench to assemble your bike?
« Reply #5 on: May 06, 2021, 10:26:43 AM »
Before my Radwagon 4 arrived, I got a 1/4" or 6.35 mm torque set. A mid-priced one from Amazon. It really helped, and I'll use it for any repairs, or adjustments I need to work on.  I have the PDF of the Manual on My phone or Google Drive, so I can reach it anywhere.  Today it's a derailer adjustment.  EOM settings were a bit hokey.  Little things are to be expected.  I called support (that's the best way to get help) and he'd sent me some specs and a few how-to documents.  Very nice folks to work with.  Good luck to all, JLH
I'm an RW4 owner. I'm not using any of these ancient forums. (ICQ, AIM, MSN, YIM). Instead look for @joelhuebner, joel.huebner, joel.huebner@gmail.com, joel52334.
That's where you will find me.
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rpwbike

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Re: did you use a torque wrench to assemble your bike?
« Reply #6 on: May 06, 2021, 12:21:15 PM »
Thanks to all, I appreciate the feedback.  I bought a torque wrench, might as well do it right.

Veggyhed

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Re: did you use a torque wrench to assemble your bike?
« Reply #7 on: May 08, 2021, 06:48:36 AM »
Now for some controversy.
Should you torque a dry bolt, greased/anti-seize compound, or blue loctite?




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hbanquer

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Re: did you use a torque wrench to assemble your bike?
« Reply #8 on: June 02, 2021, 04:20:31 PM »
Torque on a bolt can depend on many things from thread condition, lubrication and head contact surface area.
I previously worked on many engines from Solar turbines, CAT to Detroit Diesel engines. True torque or bolt preload is done by snugging the bolt up till it just tightens then turning the bolt a certain amount in degrees or turns to properly tighten or preload the bolt base on the thread pitch. All this said it is important not over tighten the bolts. I always use "Never Seize" on bolt threads to they will open after a period of time and conditions like rain, snow, salt on roads etc. Even Stainless steel bolts seize.
This is Techie talk!
Use a torque wrench or commonsense you can retighten or torque after a period of riding just to be sure.

My torque wrenches actually were calibrated in a lab and certified annually!

For years those in the company would tease me saying I did not support the industry I worked in (oil exploration) I road my bike to work (office and workshop) and heated my house with wood!

Jeff_RI

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Re: did you use a torque wrench to assemble your bike?
« Reply #9 on: July 16, 2021, 10:02:54 PM »
I did assemble my bike with a torque wrench. I bought it for about $70 on amazon and I've used it many times since. However it is not large enough for the rear wheel nuts.


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for the rear wheel nuts I bought a 3/8" torque wrench at Harbor Freight for $20.