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Is it bad to install a rack on a bike with no rack mount eyelets?

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Is it bad to install a rack on a bike with no rack mount eyelets?

Old 08-03-15, 01:19 AM
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Is it bad to install a rack on a bike with no rack mount eyelets?

I am looking into getting a cyclocross bike that can double as my daily commuter, yet the bike I'm considering does not have rear rack mounts:
Crockett 9 Disc - New! - Trek Bicycle

However, I found the following solution on Amazon that would allow me to mount the rack onto the disc brake caliper bolt:
Amazon.com : Axiom DLX Streamliner Disc Cycle Rack, Black : Bike Racks : Sports & Outdoors

I would also need a seat bolt clam with eyelets, such as the following:
Amazon.com : XLC Alloy Seatpost Clamp with Rack Mount 31.8mm Black : Bike Seat Clamps : Sports & Outdoors

Will doing this compromise the effectiveness of the breaks? Can it negatively impact the bike in any way? Someone in another post mentioned that using racks this way is bad for the bike and is unstable. Any thoughts, please!?
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Old 08-03-15, 01:31 AM
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If you don't have the bike yet, you're asking the wrong question.

What's so special about that bike that you're willing to get it despite that it doesn't have rack mounting points.
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Old 08-03-15, 01:34 AM
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Originally Posted by Bezalel
If you don't have the bike yet, you're asking the wrong question.

What's so special about that bike that you're willing to get it despite that it doesn't have rack mounting points.
It's a good CX bike.
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Old 08-03-15, 06:39 AM
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Dude, get a bike with rack eyelets!

it can be done, but it's really not worth the long term hassle and risk to frame (mostly it's just going to ruin the paint but there's a small structural risk as well)
If the bike had even Canti mounts you'd be in a really good Place since you could use randonnee racks and lighter loads but that bike doesn't even have those.
I'm positive you can find something in the geometry and spec range which is similiar to that bike and has rack eyelets (or even canti mounts)

I've put non eyelet racks on my Spesh Crux and it was not fun or optimal and I had to take them off as soon as I could.
Luckily I have canti mounts so I can use said randonnee racks in the future.
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Old 08-03-15, 07:21 AM
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We see racks mounted with "P" clamps often with better or worse results. "P" clamps won't have the security/stiffness/strength that eyelets have. There are many sizes (diameters of intended tubing to fit) and materials these clamps are had in. So some of the issue is to pick the best fit and use steel clamps. Not every shop has a good selection of these clamps in the various sizes common to bikes. When we have used them to mount racks we explain the need to revisit the fittings periodically to insure that the hardware stays tight and isn't slipping or stretching. Also that the rack load weight really is less then when mounted onto eyelets. How much less load isn't a known amount till after the limit has been exceeded and the damage happens. Andy.
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Old 08-03-15, 07:55 AM
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Originally Posted by Carkar7
I am looking into getting a cyclocross bike that can double as my daily commuter, yet the bike I'm considering does not have rear rack mounts:
Crockett 9 Disc - New! - Trek Bicycle

However, I found the following solution on Amazon that would allow me to mount the rack onto the disc brake caliper bolt:
Amazon.com : Axiom DLX Streamliner Disc Cycle Rack, Black : Bike Racks : Sports & Outdoors

I would also need a seat bolt clam with eyelets, such as the following:
Amazon.com : XLC Alloy Seatpost Clamp with Rack Mount 31.8mm Black : Bike Seat Clamps : Sports & Outdoors

Will doing this compromise the effectiveness of the breaks? Can it negatively impact the bike in any way? Someone in another post mentioned that using racks this way is bad for the bike and is unstable. Any thoughts, please!?
1) That rack attaches to the axle, it doesn't attach to the disc brake mount.

2) If there is a hole in the bridge between the seat stays, you won't need the seatpost clamp with rack mounts.

3) That rack would need flat dropouts to mount it.

4) If you can mount it on the dropouts it won't effect the disc brake in any way.

https://www.axiomgear.com/products/ge...iner-disc-dlx/

The following photo isn't the disc model but it attaches the same way.

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Old 08-03-15, 08:10 AM
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Originally Posted by Carkar7
It's a good CX bike.
There are many good CX bikes that do include dropout eyelets and seat stay mounts. Unless this is going to be primarily a CX bike with very limited commuting duty, get something more suitable.
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Old 08-03-15, 08:17 AM
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Originally Posted by HillRider
There are many good CX bikes that do include dropout eyelets and seat stay mounts. Unless this is going to be primarily a CX bike with very limited commuting duty, get something more suitable.
Thanks for all the feedback guys. Will look into something more suitable. Had no idea it would be this inefficient. I'm a trek fanboy, so I wanted this bike pretty bad.
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Old 08-03-15, 08:24 AM
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Originally Posted by Carkar7
Thanks for all the feedback guys. Will look into something more suitable. Had no idea it would be this inefficient. I'm a trek fanboy, so I wanted this bike pretty bad.
Have you looked at the CrossRip? It's even available with cantilever brakes and 8-speed! CrossRip - Trek Bicycle

The lower dropout eyelets are absolutely necessary for me. Without them it's a major pain to install fenders or a rack. The upper eyelets, however, are not as necessary in my opinion. Racks/fenders can be mounted on the brake bridge or clamped to the seat stays pretty easily.
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Old 08-03-15, 08:31 AM
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overspending on a competition cyclocross race bike then wanting to turn it into a commuter

is kind of like showing off a pile of disposable income , in a peacock tail feather like display ..


get a lower tier priced CX styled bike that already has the rack mounts on the frame,
commuting and light touring is what they were including those features for ....

Rack, mudguards, etc.

Last edited by fietsbob; 08-03-15 at 08:37 AM.
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Old 08-03-15, 08:59 AM
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Originally Posted by FastJake
Have you looked at the CrossRip? It's even available with cantilever brakes and 8-speed! CrossRip - Trek Bicycle

The lower dropout eyelets are absolutely necessary for me. Without them it's a major pain to install fenders or a rack. The upper eyelets, however, are not as necessary in my opinion. Racks/fenders can be mounted on the brake bridge or clamped to the seat stays pretty easily.
Originally Posted by fietsbob
overspending on a competition cyclocross race bike then wanting to turn it into a commuter

is kind of like showing off a pile of disposable income , in a peacock tail feather like display ..


get a lower tier priced CX styled bike that already has the rack mounts on the frame,
commuting and light touring is what they were including those features for ....

Rack, mudguards, etc.
Haha, Im looking in to the CAADX
CAADX SRAM Rival Disc - CAADX - CYCLOCROSS - ROAD - BIKES - 2015
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Old 08-03-15, 08:59 AM
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Originally Posted by FastJake
The lower dropout eyelets are absolutely necessary for me. Without them it's a major pain to install fenders or a rack. The upper eyelets, however, are not as necessary in my opinion. Racks/fenders can be mounted on the brake bridge or clamped to the seat stays pretty easily.
Agree all around. Lower eyelets are a real necessity for a solid installation of racks and/or fenders. The upper mounts can be P-clamps or, as on my Surly Pacer, a brake bridge bolt strap.
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