Binder bolt and nut specs?

[Jim Bronson]

--

------------------------------------------------------------------

signature goes here

[Bill Lindsay]

Absolutely

On Tuesday, November 7, 2017 at 1:31:26 PM UTC-8, Jim Bronson wrote:

--

------------------------------------------------------------------

signature goes here

[Jim Bronson]

What are they for a Rivendell?

Sorry was just going into doctor's office and hit send.

--
You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bun...@googlegroups.com.
To post to this group, send email to rbw-owne...@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[Bill Lindsay]

haha OK

I think you are asking for what value to set on your calibrated adjustable torque wrench for the seat post binder bolt on a Rivendell frame.  Correct?

There is none.  Tighten it just enough so it doesn't slip.  Do not overtighten.  

Here's a link to Park Tool's article on the topic, where they have a recommended value for everything, and notably say there is no value for seat post clamps.   https://www.parktool.com/blog/repair-help/torque-specifications-and-concepts#article-section-4

If I really really wanted a number, I'd use the same as the M6 bolt for brake pads (44-60 in-lbs).  The most common pre-set torque wrench is 5 ft-lb (60 in-lb), so it might be convenient to use one of those.  

Bill Lindsay

El Cerrito, CA

[Brendan McD]

It uses an M6 bolt and nut. I think the length of the bolt is 20mm, but you may be able to get away with a shorter length.

I broke my binder bolt on tour and stopped in a local hardware store and picked up a few extras for a few dollars. I put a dab of grease on it and haven't had any problems since.

I was taught to tighten the binder bolt just tight enough so that you can't rotate the seatpost in the seat tube, and that should be enough torque to keep it from slipping vertically.  

Brendan McD

Portland, OR

[Jim Bronson]

Yes thanks that's what I was looking for.  I'm going by home Depot on the way home.

I won't use my torque wrench on it.  Lol...

--

You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bun...@googlegroups.com.
To post to this group, send email to rbw-owne...@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[Bill Lindsay]

OK you were asking for the SIZE of the seat post binder bolt on a Rivendell frame?  Woosh!  I missed that entirely.  I guess size is one of many specifications.  I concur with Brendan that it's an M6.  

[Jim Bronson]

Both Home Depot and Lowe's were sold out of M6-1.0 x20mm stainless socket cap bolts.  Sigh.  They had mild steel ones so I took those as a temporary measure.  

The Lowe's guy said he had a truckload of fasteners to unload and stock so maybe I'll go back later in the week.

[lum gim fong]

bicyclebolts.com has security bolts for that, too.

I think they are stainless.

But you will have to carry a dedicated security allen wrench on the brevets. 

[Bill Lindsay]

In my experience, both Home Depot and Lowes suck for bicycle fasteners.  Home Depot sucks way more than Lowes, but both are pretty useless.  A proper fastener store is best for having everything, but they often hate you if you are only buying 1.  Ebay has essentially everything, but sometimes you have to buy a bag of several.  M6x1.0mm 20mm length is something you may use on other things: a stem bolt, mounting a cantilever brake, on some Riv rack eyelets.  A bag of 10 for $5.65 shipped is what I'm seeing from this vendor:  ebay link  

That way you don't even need to leave your home.  Stock up on all the common sizes and shop from your own inventory.  

Bill Lindsay

El Cerrito, CA

[Eric Norris]

Ace Hardware usually has a pretty good selection of bolts. From what I’ve learned about bicycle fasteners, chrome-plated steel is stronger than stainless, so that’s an option for you as well.

--Eric Norris
campyo...@me.com

@CampyOnlyguy (Twitter/Instagram)

[lconley]

I second the Ace Hardware suggestion.

Beware of using a stainless nut with a stainless bolt unless you use anti-seize, they can gall. A metric class 8.8 (~SAE grade 5) or 10.9 (~SAE grade 8) bolt works well if you don't want stainless.

Laing

[Jim Bronson]

I hadn't tried them in a while but a few years back I went to Home Depot by my old house and they were pretty well stocked up with all sorts of socket cap hex bolts that were useful on bicycles, so I stocked up.  I never bought an M6, I guess, because I didn't have one in my collection big enough for the binder bolt.

You're right though, this time they sucked.  They didn't even have any M6 nuts.  There was a space for them but they were sold out.  They had the Nyloc kind but I wasn't about to use those.  Lowe's had the nuts, and also an M6-25.  I used that rather than a 20.  Maybe could use a 20 and it would mount flush.  the 25 sticks out about an eighth of an inch, which is not a big deal to me.

In case you were wondering about the Why, I sheared off the binder bolt on my Redwood a couple of years back.  Ever since then I have switched the binder bolt back and forth between my Custom and my Redwood depending on which I wanted to ride.  I finally decided this was a completely ridiculous situation and to do something about it.

To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscribe@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.

Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[jeffrey kane]

(+) 1 on bicyclebolts.com -- their stainless steel bolt quality is quite good. You don't have to buy the Tamper Proof caps (they have regular hex head types as well) -- I use the Tamper Proof caps because I lock my bike up here and there in NYC.

[lum gim fong]

Ace hardware near moi has an huge selection of bolts.

Harder to find are the washers that fit the bolt AND the seatcluster hole.