zjrog

And that is why I don't trust carbon fiber at my size, first off.


And why I really liked this old Performance trainer. Makes a fairly solid bit of furniture. But, I now am back to a rear mount Kurt Kinetic so I can have an iNride sensor. Semi smart, just not interactive. 20 year old Cannondale has been an excellent trainer bike since I crashed on it 8 years ago.

Sy Reene

Is this whole thru-axle thing a disc brake related danger?

Cyclist753

Trainer stands that clamp onto you frame cause stresses for which the frame isn't designed. Just think about it and it will become intuitively evident. Rollers are the best (and least stressful to your frame) option if you can't ride on the road. I love my Kreitlers! I would never use Kreitler's fork stand, either.

bpcyclist

I hear you. But I have balance issues due to a neurologic issue and I just don't think I could ever do it reliably. I'm sure I'd fall. I don't even like to use my Cyclops with the frame all snugged in, for the reason you mention but also because I just don't feel secure on the bike like that. I'm plenty proficient at clipping and unclipping, but stop lights and stop signs are always an adventure for me because everything is balancing on my left leg. I used to be pretty athletic, but now, I really have to concentrate to keep from falling. Fortunately, once I get going, it's no problem. But I definitely don't like going slow. Slow or standing still are my danger points. Makes me nervous.

zjrog

I get that, feeling uncomfortable. You saw my mag trainer above. I may look at fabricating a sleeve to mount my Kurt Kinetic trainer fluid head to that stand. Hey, I'm a Jeep guy with a welder. I never claim to BE a welder though. Anyway, a few years back, at my heavier weights, I felt top heavy even on the above trainer. Felt like I was going to fall over. I hate the feeling of not being safe and stable. I have non-diabetic neuropathy in my feet. Not being able to feel what I'm standing on sucks... I only do clipless on the trainer for much of this reason....

bpcyclist

I am so sorry you are having to deal with that neuropathy. I have the same thing in the same location. I wish there was something we could do about it. I took gabapentin for quite awhile, but I don't really think it did much of anything for me. Not sure if you've tried any medication for yours. I finally decided to stop the gabapentin when I was fairly sure it just wasn't helping. I'm already on a bunch of meds for type 1 bipolar disorder, so any time I can cut a med loose, it's a good day.

zjrog

Thanks! I was on Gabapentin/neurontin for a while, switched to Lyrica for 18 months, but gained 60 pounds. Went back to gabapentin for a year then quit it. I use a B vitamin complex called Metanx, a prescription only proprietary vitamin mix. I think it helps a great deal more than the others did. I've been able to drop my BP meds completely this past year, reduce my water pills and gout meds by half each... I was able to drop anxiety meds a couple years ago, and sleep meds. So yes, dropping meds is never bad. I do use multivitamins, calcium and magnesium too.

Cyclist753

Maybe a cycle trainer built from the ground up as such is a better option if available or in the budget??? If using a 'clamp-on' trainer then, maybe, don't get too 'vigorous' with the exercise!?! Sorry for hijak FlashBazbo.

GAtkins

Not to high jack the thread further, but sometimes non-diabetic neuropathy can be caused by a Vitamin B12 deficiency. I know - I've got it. Many sympathies to you guys.

Glenn

john.b

Canyon was one of the worst offenders, considering they sponsor a Zwift virtual race team. It looks as though they updated their warranty terms as of today:

https://road.cc/content/tech-news/26...endurace-grail

Although at some point you have to ask yourself, if a bike frame can’t support the axle stresses of a trainer, how can it handle the axle stresses of a sprint?

zjrog

I do take a B12 heavy supplement. Have for about 2 years now. A recent blood workup shows that way over the top on the scale...

Sy Reene

Interesting. Though to note that Canyon has a qualifier that "the trainer must clamp on to the bike's rear axle..." This to mean no wheel-off direct drive trainers are 'allowed'?

jadocs

I second this!

No artificiality when riding smart resistance rollers as compared to locking your bike on a stationary. It will improve your bike handling skills. Learning to ride them is half the fun. Once you have mastered it, indoor training on Zwift, or whatever one uses is on another level.

Succhia Ruota

After riding rollers for the last year, I will never lock my bike down on a stationary again.

Cyclist753

'Although at some point you have to ask yourself, if a bike frame can’t support the axle stresses of a trainer, how can it handle the axle stresses of a sprint?'

john.b- a rolling bicycle is more dynamic and stresses are spread through the road surface (it does give a teeny bit!), tires, rims, spokes and then to axle and frame. Clamping the frame concentrates all of those forces at the fork ends and rear drop outs. Far away and a long time ago I remember reading an article on the subject which was an 'eye opener'. I subsequently ditched the 'clamper' and bought rollers. That was back when I didn't have much money and absolutely no assets so it was a major investment! I am not a metallurgy or physics major nor have the mental or physical capacity (I'm lazy) to crunch numbers anymore but intuitive sense is still present! lol One item I especially remember: if the front and rear axles are locked and immobile how many duty cycles will they absorb if you move the BB side to side 5mm? 10mm? 15mm? On a moving bicycle the whole frame et al flexes for the same loads. Sorry for hijack.

str8jakett

+1 for rollers, but let me add that if you are injured and can't ride outdoors (fractured clavicle), then you can't ride indoors on rollers either.

For this reason, I've started looking at wheel-off smart trainers but this thread has me reconsidering. I've got an old wheel-on dumb mag trainer but no trainer specific skewer, and that thing never felt secure either.

AndyK 

So, old steel frame better/safer than modern carbon frame - when on a rear-axle clamping trainer?

Reynolds 

Yes, and not only.

GnipGnop

Surprise! Another boomer that can't accept accountability for their own actions.

LOL just kidding. But thanks for the reminder to ensure my bike is done up properly.

AndyK 

Not only - what?

Reynolds 

Not only when clamped in a trainer.