depends how much you paid but definately give the guy a bad review on ebay…maybe just buy a learner uni from your lbs.
It’s not the guys fault he has defective unicycles. If he’s been nice to deal with, keep working with him and see if you can get a non defective unicycle.
As a side note: are you sure it’s not just the same wheel you already had?
mine does the same thing… well it did.. i got it fixed.. and its just starting to do it again… the first time it was wicked bad.. id get up… and the wheel would just fling out from under me.. and i never moved the pedals… so.. yeah couldnt ride it… but now im noticing a little give again… when i idle.. or just get the uni agled more \ or / yeah
the first time the bike shop guy just said i had to get the… little hub holder thing bolts.. tightened… like mines has clamp things… and.. i just tightened them.. and they seemed to fix that problem.. but now i dont know.. but try that?
The Sun I bought for my Brother in-law last fall had the exact same problem. UDC gave me a refund. There is some resistance between axle and hub, but not enough and the pedals and cranks can be turned slowly while holding the wheel, spokes, and hub still. Bummer.
hm … what brand of uni is it?
this thread is months old…hes gotten it fixed by now.
Spindle Slippage
Last Fall I set-up an exhibition booth at my local town day to promote the sport of unicycling. I purchased a 20" Sun to raffle off during the event but I couldn’t give it away due to the same problem. The spindle would slip inside the hub when you applied a force to the pedals that was only slightly greater than that used for normal pedaling. For an experienced unicyclist it was kind of cool but for a beginner/novice it was an accident waiting to happen. I guess you get what you pay for.
so is there any way to weld the hub & axle together w/o weakening it too much??
or is there a better way to fix it?
so is there any way to weld the hub & axle together w/o weakening it too much??
I’ve done some light welding before but I’m not educated enough in the craft to answer your question sufficiently.
If the hub shell and the spindle are the same materials they can probably be welded. The welds would then have to be grinded down significantly to allow the bearings to seat properly on the hub. This due to the close proximity of the bearings to the hub flange when the bearings are pressed on. It’s also important to note that while most spindles are made of steel some hub shells may be made of an alloy. In this case, due to the different melting points of the two materials, I believe welding is impossible.
For the amount of work involved and the cost to pay a half-way-decent welder you’re probably better off purchasing a new wheel or possibly a used one.
If you choose to try to have the hub welded you might want to try your local muffler shop. I say this because last year I tried to have some brake mounts welded onto an old steel unicycle frame. I dropped the frame off at my local auto parts store which specialized in welding cracked engine blocks. They couldn’t do the job properly because the frame was made of cheap metal. Because of the impurities in the steel the metal kept popping which made it too difficult to weld.
I got the frame back with several holes blown out of the frame. The guy suggested I try the muffler shop down the road. The muffler guy did a fantastic job becuase he had more experience welding dirty metals.
One of the ppl in the unicycle club i run at school purchassed u cheap uni of the New Zealand equivilent of ebay. After a couple of months his wheel started slipping too. It’s as if the flanges of the hub are not actually fastened to the hub body..They sent him a new one and after a week it is already happening again. They’re just real crap unicycles from what ive seen. And it doesnt look as if they’re faulty every now and then. More like a design fault.
That happened to my first uni too. It was a jugglebug.