Author Topic: Rear rack on 29er MTB/Disc with no bottom dropout mounts?  (Read 2807 times)

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Offline redcon1

Rear rack on 29er MTB/Disc with no bottom dropout mounts?
« on: June 22, 2017, 08:37:20 am »
I am outfitting my Gary Fisher X-Caliber 29er for a C&O/GAP journey and I picked up a fairly generic Topeak rack designed for 29ers with disc brakes.
That's when I noticed there are no threaded holes in the rear dropout to mount the rack.  Does anyone have a solution that isn't going to cost $150-plus to get a rear rack on my 29er?

Offline Pat Lamb

Re: Rear rack on 29er MTB/Disc with no bottom dropout mounts?
« Reply #1 on: June 22, 2017, 08:45:30 am »
1. Go to your local hardware store and grab a couple P-clamps that fit your stay.  These things have a rubber bushing inside a springy steel "P" and you can jam it down against the dropouts so they won't slide any further.  Screw the rack mount onto the P and you're done.

2. If your dropouts have a hole inside them, there's a product that can mount a rack through that hole.  Most dropouts don't have it, but let me know if yours does and I'll see if I can find it again.

Offline redcon1

Re: Rear rack on 29er MTB/Disc with no bottom dropout mounts?
« Reply #2 on: June 22, 2017, 08:58:44 am »
Thanks Pat, I have fitted the seatpost clamp that has threaded holes for mounting the rack stays, so P-clamps on the seat stays are not necessary.

As for the rear dropout, there are holes in each side of the dropout above the traditional spot, but they are larger and not threaded.  I'll See if I can snap a picture or two tonight to show what my rear dropouts look like.

Offline OHRider

Re: Rear rack on 29er MTB/Disc with no bottom dropout mounts?
« Reply #3 on: December 16, 2021, 08:07:46 am »
You might want to check out Axiom racks.  The 29er one might have an option to work with a thru axle- I see it says they have a kit to adapt to "bolted axles" which could be another term for a thru axle?  Give them a call- they've been very helpful and I've used them for all 4 racks that I have on the bike in my family. 

https://www.axiomgear.com/products/racks/streamliner-racks/streamliner-29er-dlx/ 
See the sentence in the mounting system description that says "Optional (171356-17) ‘Nutted Axle Kit’ can be used to fit bikes with bolted axles.".

I've also seen that someone makes a thru axle adapter for racks if you do a search for that.

re Axiom- I broke a bracket on my rack on a recent trip- I was able to repair it during the trip but when I returned I emailed them and asked for replacement brackets- they actually shipped an entire new rack to - no questions asked.

Offline OHRider

Re: Rear rack on 29er MTB/Disc with no bottom dropout mounts?
« Reply #4 on: December 18, 2021, 04:31:48 pm »
Here is another possible solution- Robert Axles makes axles that can be used with a bracket to support a rack.  You'll have to research it to see if it would work for you situation.

https://robertaxleproject.com/cargo-rack-thru-axles/

Offline OHRider

Re: Rear rack on 29er MTB/Disc with no bottom dropout mounts?
« Reply #5 on: December 19, 2021, 07:22:29 am »
Another very old thread revived by a new user just to post the spam link in a follow up by Nemikon to a site that is not useful for any good reason.  If you are looking for p-clamps, no reason to go there.  How many of these trolls have we had so far?

They seem to work in pairs This time there are 3 and they seem more plausible in their lead up to posting their spam link.

Have to say I was quite surprised to be called a troll- when I was trying to provide a possible solution.  Thought about it and I decided that you were calling me a troll since I placed a link in the post. Considering I am very careful about ever clicking on links I guess I'll give you that one and not take it personally.

Re the P-clamp vs the Roberts Axle Project thru bolt solution- with the p-clamp I was considering that this sounds like a mountain bike and as such he might be hitting some pretty rough terrain- the thru bolt will structurally be much better than a p-clamp but also much more expensive.  I've heard the C&O is pretty rough for a towpath type trail.  Final word- I've seen some really low quality p-clamps- make sure you get a decent one.