Bicycle Mechanics - Luggage rack on a mountain bike

This is probably like swearing in the church, but I'm going to buy a mountain bike and I'd like to but a luggage rack on it! :) I need it to attach my pannier when biking to university. It can't be one of those single attachment point beams. My experience is that these are absolutely nothing but useless. With a little weight on it, just a tiny bump will make it go into the wheel. Most mountain bikes I've seen don't have holes to attach a rack at the rear wheel. This can be solved by using a rack like this (http://www.ebikestop.com/axiom_odyssee_disc_compatible_rear_rack-RK6621.php). However it seems like some of the more expensive ones don't even have the holes to attach it under the seat. I thought this might be possible to solve by creating some kind of attachment system as seen on those beam type of racks. Or maybe there exist a product like this?

most general purpose hard tail bikes have eyelets for attaching a rear rack. What bike are you getting?

Hmm, maybe I just didn't see them then. I was among others looking on the Scott Scale 70 (http://scottusa.com/gb_en/product/7932/44741/scale_70) and I got the impression that it didn't have any.

you are correct, the bicycle you are looking at will not have fender/rack eyelets.
Some multi-point racks are 'strappable' to the seatstays.

Also, you are turned off of the singularly seatpost attachment types. I think you should not so quickly write them off. You may have had a bad experience with them in the past but that could have been low quality rack or install error. The problem with seatpost mounted racks is usually weight capacities, not sway.

I think the issues is with some of the QR seatpost racks. I have a bolt on seatpost mount rack I bought at REI, it doesn't move.

do the straps like blasternot112 says, if they don't come with the rack hit up your local shop, we have a ton of them just laying around... if they are not a tight fit use a piece of rubber from an old cut up tube to act as a shim and everything should snug down nicely...

If you don't mind spending the money, one of these will work for you: http://www.oldmanmountain.com/Pages/RackPages/RearRacks.html

Some bikes will have rack mounts and some won't, it'll depend on the brand and model.

The Trek 6500 and the Cannondale F4 have rack mounts and are a similar price to the Scott Scale 70.

http://www.trekbikes.com/us/en/bikes/mountain_hardtail/6_series/6500/ (http://www.trekbikes.com/us/en/bikes/mountain_hardtail/6_series/6500/)

http://www3.cannondale.com/bikes/10/cusa/model-0FS4.html (http://www3.cannondale.com/bikes/10/cusa/model-0FS4.html)

Since a whappong <1% of riders enter races, manufacturers like to make bikes less practical so they look more like race bikes. Shop around... there are plenty of MTBs with braze ons for racks and fenders.

Disc brakes tend to make rack mounting a little tougher, but rack makers are catching on and have some solutions.

Also, if you are getting a nice expensive bike for biking to class, please tell me what school you are going to so I can come and steal your bike...? somebody is going to do it, so it might as well be me! ;)