Re: Tire shop in Beijing?
Bump...
Nobody? :confused1:
Re: Tire shop in Beijing?
All the Jing'rs I know (myself included) have never found a decent motorcycle wheel/tire shop in Beijing. By the way, the mere presence of a mechanical tire R&R machine, or even a Balancer, definitely does NOT mean the shop operator has a clue what he is doing.
Sorry.
Re: Tire shop in Beijing?
Wow that's crazy! Yet at the same time, not entirely unbelievable. You would've thought that in a city of 20,000,000, at least one person would have some good idea of how to balance and true a wheel.
How does everyone get here (and on the Chinese forums) get their tyres changed, and done well?
Re: Tire shop in Beijing?
Don't worry if your e-bike has a balance problem over 50km/h because it won't be doing that speed for very long
Re: Tire shop in Beijing?
Quote:
Originally Posted by
branng
Gents - was wondering if anyone knows of a tyre shop in Beijing they could recommend and vouch for. I have a pretty severe tyre (and possibly a wheel) roundness issue on the rear wheel/motor of the new e-scooter which I just picked up on Sunday (which runs on 13 inch wheels, in case that's relevant) which results in a wobble at speeds over 50km/h. I did take a bit of a gamble by buying directly from the manufacturer, as there aren't any dealers for the bike in Beijing, so it's very much DIY when it comes to servicing and fixing problems.
I've tried searching the forum and was surprised to not find any threads/posts discussing tyre shops.
Thanks!
50 km on a E-Bike surely that is illegal
Re: Tire shop in Beijing?
seriously though I think it's difficult to balance this type of wheel as the e-motor and reduction gears are inside the hub and always rotating so you are trying to balance the whole gubbins. If you can see a visual imbalance it is probably a dud tyre so check it is seated correctly and if all else fails replace it.
Re: Tire shop in Beijing?
I've been seriously contemplating a steering damper just becuase it would help damp out some of the wheel wobble caused by my bike's unbalanced wheels.
Re: Tire shop in Beijing?
lol yeah make it an Ohlins. I suppose you could balance it somewhat by eye . Spinning the wheel by hand and see the high spot , this must be the "heavy" side as the mass is further from the axle and just stick a ton of weight on the opposite side in a trial and error type procedure.
Re: Tire shop in Beijing?
Quote:
Originally Posted by zhu
Don't worry if your e-bike has a balance problem over 50km/h because it won't be doing that speed for very long
Hrmm... that would be an assumption, and an incorrect one at that ;) Some e-scooters are more equal than others... :naughty:
Quote:
Originally Posted by prince666
50 km on a E-Bike surely that is illegal
Well, best I can find of something resembling a piece of regulation on e-bikes in China is that they are not to exceed 20km/h (which is ridiculous, given that when we ride on our bicycles in a peloton - for sport - 30km/h is considered "slow"; professionals regularly get to 50km/h). So as far as I can tell, every single e-bike sold and used in China is illegal.
Quote:
Originally Posted by zhu
If you can see a visual imbalance it is probably a dud tyre so check it is seated correctly and if all else fails replace it.
One of the reasons why I'm looking for a decent tyre shop who can reseat a tyre properly and definitively rule of the possibility of the tyre having low/high spots on it. Or even better, one that has a truing rig of some sort.
Quote:
Originally Posted by zhu
Spinning the wheel by hand and see the high spot , this must be the "heavy" side as the mass is further from the axle and just stick a ton of weight on the opposite side in a trial and error type procedure.
Not to sound patronising, but I think you're mixing two things up here: 1. the roundness/trueness of the wheel/tyre and 2. the balance of the wheel/tyre. My understanding is that they're mutually exclusive things i.e. the high spot need not necessarily be the "heavy" side, and vice-versa.
Thanks for the suggestions all though. Guess I'll have to keep on looking. Will update if I find anything.
Re: Tire shop in Beijing?
Quote:
Originally Posted by
branng
How does everyone get here (and on the Chinese forums) get their tyres changed, and done well?
Do it yourself. If it's a big bike, take the wheels off, go to any car tire shop and use their tire machine. If it's a smaller bike, use tire irons. Balance it yourself, you can search the sight to see my tire balancer thread.
Don't worry, by the time you leave China you will be an expert at fixing everything because you eventually get frustrated with the local professionals and can usually do a better job by yourself.
Cheers!
Re: Tire shop in Beijing?
fact is mate its an e-bike, every km it travels the voltage is dropping so whereas a motorcycle will travel until it runs out of gas and can then be refuelled in about 2 minutes, an e-bike has to be charged for hours. The faster it goes the less distance it travels. So I will stand by that assumption . The tyre is either seated on the bead or it is not. If it's not then stand well back and inflate it to whatever your compressor can puff. If its still not round it never will be so go buy a new one.
1 Attachment(s)
Re: Tire shop in Beijing?
Quote:
Originally Posted by
zhu
an e-bike has to be charged for hours
I'll grant you that this is a drawback of electric modes of transport and will be until some rapid, hot-swappable battery solutions come along e.g. Tesla's 90 second battery swap solution for the Model S.
But this is the way I think of it: would you charge up your phone while you're asleep at home, or would you rather take it into some guy's shop to get it charged up while you're out and about?
Quote:
Originally Posted by
zhu
The faster it goes the less distance it travels.
Not to be rude, but this isn't true for gas motorcycles? Anyway, I don't want to start a flame war; thanks for the suggestions. I'm starting to think it's the hub motor itself that's out of true though. :(
Quote:
Originally Posted by
zhu
Balance it yourself, you can search the sight to see my tire balancer thread.
Seems like Sumomoto make some pretty nice stuff! Got in touch with Kimi from Sumomoto who offered their new 'Deluxe' wheel balancer the WB3003-D for a reasonable price. So I pulled the trigger on it.
Attachment 14039
Apparently they don't sell the WB3003 non-Deluxe version (the one on their website) anymore.
Re: Tire shop in Beijing?
Pretty sure a motorcycle will achieve the same speed when it has a full tank or one liter left. If you are referring to LPG powered scooters they have a pressure regulator so no change in speed until the very last dregs of the tank. Btw ChinaV suggested you balance it yourself. Most e-bike tyres are removed with a rusty screwdriver but a pair of tyre levers will cause less damage to the rim. It is entirely possible your hub/motor/wheel is out of round in which case there is not much you can do except replace it and no guarantee the replacement will be any better. Not trying to flame you mate it's just my kiwi sense of humour. Good luck with the problem and keep it shiny side up.
Re: Tire shop in Beijing?
I am pretty sure that all big bike brands have their own specialized and trained mechanics. E.g. A Ducati dealer must have a mechanic that can replace worn out stock tires with new ones, do the balancing etc. Has anyone tried to get their own bike serviced by them? Will they accept other-brand bikes and just offer mechanical service?
