Trainer usage

Reply Subscribe

Thread Tools

Search this Thread

10-02-06, 11:06 PM

bfloyd

Senior Member

Thread Starter

Join Date: Apr 2006

Location: Ohio

Posts: 654

Bikes: vintage Raleigh

Mentioned: 0 Post(s)

Tagged: 0 Thread(s)

Quoted: 0 Post(s)

Likes: 0

Liked 0 Times in 0 Posts

Trainer usage

Hello all. Is it "frame safe" to use an aluminum road frame with a rear wheel loaded trainer if I'm not doing any sprint work? Is it even a no-no to do sprints with an aluminum frame in the trainer? Thanks.

10-02-06, 11:15 PM

Psimet2001

I eat carbide.

Join Date: Jan 2006

Location: Elgin, IL

Posts: 21,627

Bikes: Lots. Van Dessel and Squid Dealer

Mentioned: 25 Post(s)

Tagged: 0 Thread(s)

Quoted: 1325 Post(s)

Likes: 454

Liked 1,306 Times in 560 Posts

You'll be fine. Trainer loading is similar to road loading as far as the frame is concerned. If it fails in your trainer it would fail on the road

__________________

PSIMET Wheels, PSIMET Racing, PSIMET Neutral Race Support, and 11 Jackson Coffee
Podcast - YouTube Channel
Video about PSIMET Wheels

10-02-06, 11:32 PM

VosBike

Outgunned and outclassed

Join Date: Oct 2003

Location: The Springs, CO

Posts: 998

Mentioned: 0 Post(s)

Tagged: 0 Thread(s)

Quoted: 0 Post(s)

Likes: 0

Liked 0 Times in 0 Posts

The frame is loaded the same in a trainer, but the stays can be compressed if you overtigheten the trainer.

Trainers also put incredible stress on skewers, so use a different one for the trainer.

10-02-06, 11:48 PM

dogpound

1 trick pony

Join Date: Oct 2005

Location: on my bike

Posts: 1,017

Mentioned: 0 Post(s)

Tagged: 0 Thread(s)

Quoted: 0 Post(s)

Likes: 0

Liked 0 Times in 0 Posts

they can also eat your tires quickly and bore you to tears.

10-03-06, 05:36 AM

badkarma

Know Your Onion!

Join Date: Aug 2005

Location: Boston, MA

Posts: 2,011

Bikes: Kestrel Talon, Motobecane Le Champion SL

Mentioned: 0 Post(s)

Tagged: 0 Thread(s)

Quoted: 1 Post(s)

Likes: 0

Liked 0 Times in 0 Posts

Quote:

Originally Posted by bfloyd

I'm convinced that rear wheel trainers put added stress on frames. I noticed additional BB flex last year while I was on my rear wheel trainer. I don't think it's going to fatigue your frame much more quickly than road riding, so I wouldn't worry about it too much.

10-03-06, 08:01 AM

FormerBMX'er

Senior Member

Join Date: Dec 2005

Location: Beantown

Posts: 1,546

Bikes: 2011 Tsunami, 2004 Fuji Team Issue and More!!!

Mentioned: 0 Post(s)

Tagged: 0 Thread(s)

Quoted: 0 Post(s)

Likes: 0

Liked 1 Time in 1 Post

Quote:

Originally Posted by dogpound

they can also eat your tires quickly and bore you to tears.

Ain't that the truth! I used my outdoor set on the trainer and quickly noticed a flat spot and pits on the running surface. This winter I'll have a bike and rear wheel dedicated to the trainer.

As for the boredom I limit myself to 30~45min as I commute to work.

10-03-06, 08:06 AM

merlinextraligh

pan y agua

Join Date: Aug 2005

Location: Jacksonville

Posts: 31,302

Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike

Mentioned: 17 Post(s)

Tagged: 0 Thread(s)

Quoted: 1447 Post(s)

Likes: 95

Liked 724 Times in 371 Posts

Quote:

Originally Posted by VosBike

The frame is loaded the same in a trainer, but the stays can be compressed if you overtigheten the trainer.

.

Huh? wouldn't the axle and the skewer kinda get in the way of compressing the stays? If you seriously overtighened the trainer, you'd be pushing the bearings on the axle inwards, perhaps a millimeter or two. I don't see how you could possbily tighten the trainer to the point it could permanenty deform the stays without destroying the back hub, and I doubt anybody has the handstrength to do that. Now I wouldn't suggest you overtighten the trainer because you'd be putting undue stress on the skewer, and the hub bearings, but I think it's virtually impossible to break your frame that way.

10-03-06, 08:12 AM

VosBike

Outgunned and outclassed

Join Date: Oct 2003

Location: The Springs, CO

Posts: 998

Mentioned: 0 Post(s)

Tagged: 0 Thread(s)

Quoted: 0 Post(s)

Likes: 0

Liked 0 Times in 0 Posts

Quote:

I think it's virtually impossible to break your frame that way.

So do I. Sorry for the misunderstanding, but I wasn't trying to say that you could break a frame by putting it on the trainer. I'm refering to a slight deformation that the stays bounce back from as soon as they are out of the trainer. However, putting riding forces through the stays when they are slightly compressed can't be good.