I am a recently returned cyclist. When I left carbon was pretty exotic. My new bike has a carbon seat post and specific Nm of torque to se the bolt to. I have a car torque wrench, much higher Nm settings. Who has purchased a bike suitable one?

I have a carbon seat post but also interested for other things like stems. Also when I need to start servicing the bike.

Recommendations?

Tags: Tools, torque

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i have a ritchey torque key ..  that seems to work well enough for seat posts, stems etc

I have a 1/4" drive torque wrench made by Teng Tools, which I originally bought for the smallest fasteners on my motorbike.

It has a range of 5 - 25Nm, which should do the the trick I think. It also has a degree dial on the head for "torque-to-yield" applications, which seem more common these days.

Edit: That Ritchey Torque Key looks a nice bit of kit, depending on whether you think you need a wrench for other bike applications or not.

I use a Park Tool torque wrench that is bike specific and cost 80 bucks on the internet....a lot of bike mechanics use this particular brand and model which ranges from 3-25 Nm....it was a good investment

BBB brand which starts from 2NM. about $80 from cell.

+1

I have a BBB torque wrench. Comes in a little box with a set of hex heads, 3mm - 8 mm i think.

It can do low settings like 4 or 6nm for stems etc.

It's ok, cheaper than the Park but prob not as good.

Cheers

Alex
Yep, got two, a smaller one for stems and small bolts, a larger one for cranks and such.
The large one is a Teng tools brand, smaller one I cant remeber off the top, had it for ten years or so.
One small issue is that they are "supposed" to be recalibrated now and then, especially if they get knocked around, otherwise you could be tightening them to anything really. Having said that i havent had mine done.....

I will suggest that home use id a different environment than industrial or commercial workshop use. 

So the tool is less likely to need regular calibration.

Yeah, i agree, which is why I havent bothered.

Now that Im thinking about it though, if you arent sure how accurate your torque wrench actually is but are happy with "close enough" enough in a home environment, why bother with a torque wrench in the first place, kinda contradicting myself now.... :)

You wont get "close enough" by feel.  People generally tend to overestimate the required tightness by a fair bit it seems, especially at low torque values. 5Nm doesn't feel very tight at all.

FWIW my Teng torque wrenches all came with individual calibration certificates, so that barring accidents or abuse I feel I can be pretty confident in their accuracy.

i bought a 'zero' kit from lifecycles in norwood. seems good. and has all the hex bits that most bikes have on them. plus it's a 1/4in drive, so suitable for any other sockets/driver adaptors that are sold in hardware/automotive stores. it does 3-15nm, so not quite the range of some of the other tools mentioned. but it is easily locally sourced.

I have a "Pro" (Shimano), works very well, easy to use. The things with torque wrenches is that they cost about $80-$100, you only use them a few times a year, but when you need them - you need them. Dont dare not use one when it comes to carbon. If its just for your seat post I'd suggest you borrow one from a mate or just get the bike shop to adjust (I wouldnt think theywould charge you just to tighten one bolt).

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