Strida News Strida Forum About Strida Strida Reviews Where to Buy Photos & Videos Other Folding Bikes

Torn rear hub

The place to report and discuss your experiences of owning and riding the Strida. Perhaps your first impressions, or your story of a big trip.

Moderators: newcross, Amuro Lee, Binch Shin, Blackstridaaustria

Torn rear hub

Postby one_half_3544 on Tue Oct 25, 2011 8:44 pm

I guess this is the correct subforum to post this picture.
Image

I noticed that my rear wheel became out of true and started fixing by checking spoke tension - and noticed this.
The bike is rideable, but I think it is not safe in such condition. Hope this is covered by the warranty.

The only question that I have - why do they make those big holes in the flanges? - as if to weaken them =( No other purpose unless they were trying to save some weight.
User avatar
one_half_3544
 
Posts: 77
Joined: Mon Jun 13, 2011 8:56 pm
Location: Wrocław

Re: Torn rear hub

Postby Blackstridaaustria on Tue Oct 25, 2011 8:59 pm

OMG! :shock:

one_half_3544 wrote:...but I think it is not safe in such condition.


For sure!

one_half_3544 wrote:Hope this is covered by the warranty.


Me too, did you contact your dealer/Ming ?

one_half_3544 wrote:...why do they make those big holes in the flanges?


We should ask Ming Cycles.

:?
STV@gmx.org
StridaTuningVienna

"Who knows nothing, must believe all." *

[* line from "Aphorismen"; Marie von Ebner-Eschenbach, Austrian poet, 1893]
[* book title; Werner Gruber, Austrian physicist, 2010]
User avatar
Blackstridaaustria
 
Posts: 1410
Joined: Mon May 24, 2010 8:44 pm
Location: 48.20938,16.370287

Re: Torn rear hub

Postby Edd on Thu Oct 27, 2011 3:27 pm

Holy Geez how in the world did you tear a hub apart?! Which model strida do you have? because my Strida 5.0 16 inch wheel hub has these funny elongated holes which two spokes go into each one but didn't have extra holes between like that though. Never had a problem with them but then I moved onto the 18 inch wheels and the hub on those have no empty hole spacing all spoke holes only. It's a solid piece of metal and after 4000km's on them they're still fine luckily :). I did 2000km's on the other one before i upgraded (2k a year of commuting). But yeah i'd contact ming about that to let them know about your model so they can offer replacements. You basically need a new hub and relacing a wheel isn't the most fun if you don't have the equipment.

If I stayed on my 16 inch rims I would have upgraded to those Strida LT mag wheels! no more spokes to break!
Edd
 
Posts: 67
Joined: Fri Jun 03, 2011 8:16 pm

Re: Torn rear hub

Postby one_half_3544 on Thu Oct 27, 2011 10:11 pm

Blackstridaaustria wrote:
one_half_3544 wrote:Hope this is covered by the warranty.

Me too, did you contact your dealer/Ming ?


Yes. Fortunately, local strida dealer agreed to fix this under warranty.

Edd wrote:Holy Geez how in the world did you tear a hub apart?! Which model strida do you have?

This is a stock wheel of strida 5.2 (I bought it this summer). And I did not do anything special. Actually, I've noticed it accidentally :(

because my Strida 5.0 16 inch wheel hub has these funny elongated holes which two spokes go into each one but didn't have extra holes between like that though. Never had a problem with them but then I moved onto the 18 inch wheels and the hub on those have no empty hole spacing all spoke holes only. It's a solid piece of metal and after 4000km's on them they're still fine luckily :).

Yeah, 18" wheels should be better. I was thinking of buliding them from the beginning. Now it's time to set to work, I guess =)

If I stayed on my 16 inch rims I would have upgraded to those Strida LT mag wheels! no more spokes to break!

Afaik, those wheel are even less durable (judjing by the maximum allowed tyre pressure). Plus they are not repairable (not more spokes to replace =)).

I think regular spoked wheels are ok if they are correctly built (tensioned, stress-releived, etc..) and free from factory defects (this is my case I guess).
User avatar
one_half_3544
 
Posts: 77
Joined: Mon Jun 13, 2011 8:56 pm
Location: Wrocław

Re: Torn rear hub

Postby Blackstridaaustria on Fri Oct 28, 2011 9:10 pm

one_half_3544 wrote:I think regular spoked wheels are ok if they are correctly built


You're right, I'm sure.
Btw, did you check the spoke's tensions at the front wheel?


Amuro wrote:How can Ming Cycle sell such badly built wheels to their customers :?: :!: :evil:

Re: My Strida SD (Sport Duo)


bobw wrote:In a word, rubbish.

Broken spokes


nindyz wrote:3rd broken spoke in 6months!

Another broken spoke on back wheel


Once again, I've checked ten (10) original Strida wheels (three 18" wheelsets and two 16" wheelsets) -

ALL of them had (more or less) loose spokes...Image

Slutty built wheels over years?


one_half_3544 wrote:Yeah, 18" wheels should be better.


If you mean original Strida wheels you're right, but

one_half_3544 wrote:I was thinking of building them from the beginning.


It should be said officially that the most durable combination has to be that of a 16" rim, 36 spokes and an 18" hub.
(Optimal spoke pattern has to be discussed...)
A disadvantage of 18" wheels might also be the small amount of fitting tyres.
STV@gmx.org
StridaTuningVienna

"Who knows nothing, must believe all." *

[* line from "Aphorismen"; Marie von Ebner-Eschenbach, Austrian poet, 1893]
[* book title; Werner Gruber, Austrian physicist, 2010]
User avatar
Blackstridaaustria
 
Posts: 1410
Joined: Mon May 24, 2010 8:44 pm
Location: 48.20938,16.370287

Re: Torn rear hub

Postby one_half_3544 on Mon Oct 31, 2011 4:02 pm

Got my bike back yesterday - fixed! They were really fast in repairing..

Blackstridaaustria wrote:
one_half_3544 wrote:I think regular spoked wheels are ok if they are correctly built


You're right, I'm sure.
Btw, did you check the spoke's tensions at the front wheel?


Yes. I was/am checking and tightening them from time to time. Don't have a tension meter, so I was playing it by ear (by comparing with tension on my bike-mechanic-built mtb wheels).

Blackstridaaustria wrote:..
Slutty built wheels over years?

I guess it is normal for average mass-production factory-built wheels.

Blackstridaaustria wrote:
one_half_3544 wrote:Yeah, 18" wheels should be better.


If you mean original Strida wheels you're right, but

one_half_3544 wrote:I was thinking of building them from the beginning.


It should be said officially that the most durable combination has to be that of a 16" rim, 36 spokes and an 18" hub.
(Optimal spoke pattern has to be discussed...)

Most durable - yes. But apart from durability I also want more speed =) - so I'm going to give 18" wheels a try.

Blackstridaaustria wrote:A disadvantage of 18" wheels might also be the small amount of fitting tyres.

Hmm.. really? While looking for 16" foldable tyre, I've got quite the opposite impression. Maybe because I was looking for tyres with kevlar bead only...
User avatar
one_half_3544
 
Posts: 77
Joined: Mon Jun 13, 2011 8:56 pm
Location: Wrocław

Re: Torn rear hub

Postby Edd on Mon Oct 31, 2011 7:49 pm

With the 18 inch tires for the strida we have very little choices in order to fit the frame.
1)schwalbe kojaks 18x1.25
2)schwalbe marathon plus 18x1.35
3)strida innova tires 18x1.35

if you choose not to use fenders at all you can squeeze in the Marathons 18x1.5 but it will be extremely tight and might rub the frame.
Edd
 
Posts: 67
Joined: Fri Jun 03, 2011 8:16 pm

Re: Torn rear hub

Postby Blackstridaaustria on Mon Oct 31, 2011 9:24 pm

one_half_3544 wrote:Hmm.. really?


For 18" wheels are just two (fitting) tyre sizes available:

18" x 1,25 (ETRTO 32 - 355) and 18" x 1,35 (ETRTO 35 - 355)
Edd wrote:1)schwalbe kojaks 18x1.25
2)schwalbe marathon plus 18x1.35
3)strida innova tires 18x1.35


Thanks Edd, guess you're right!

For 16" wheels should fit the sizes:

16" x 1,25 (ETRTO ?)
- Kenda Kwest (maybe no more available)

16" x 1,35 (ETRTO 35 - 305)
- Primo Comet (maybe no more available)

16" x 1,5 (ETRTO 40 - 305)
- Kenda Kwest
- Gumonder G701
- Schwalbe Marathon Racer
- there should also exist a white-wall tyre in that size...

16" x 1,75 (ETRTO 47 - 305)
- Schwalbe Road Cruiser
- Schwalbe Marathon
- Continental Explorer

16" x 1,90 (ETRTO 47 - 305)
- Schwalbe Black Jack

16" x 1,95 (ETRTO 53 - 305)
- Maxxis Hookworm (very interesting tyre, max. 8.0 bar!)
Waiting for this tyre for 9 weeks... :(

16" x 1,95 (ETRTO 54 - 305)
- Schwalbe City Jet (maybe no more available)

16" x 2,00 (ETRTO 50 - 305)
- Schwalbe Big Apple

Tyre sizes above 16" x 1,5 will require modifications of the wheel (folding) magnet.
(Mudguard fit questionable...)

Beware, incomplete listing ! :mrgreen:
STV@gmx.org
StridaTuningVienna

"Who knows nothing, must believe all." *

[* line from "Aphorismen"; Marie von Ebner-Eschenbach, Austrian poet, 1893]
[* book title; Werner Gruber, Austrian physicist, 2010]
User avatar
Blackstridaaustria
 
Posts: 1410
Joined: Mon May 24, 2010 8:44 pm
Location: 48.20938,16.370287

Re: Torn rear hub

Postby one_half_3544 on Wed May 30, 2012 8:23 am

one_half_3544 wrote:The only question that I have - why do they make those big holes in the flanges?


Replacement of broken spoke has revealed that those holes are needed for spoke insertion :lol:
User avatar
one_half_3544
 
Posts: 77
Joined: Mon Jun 13, 2011 8:56 pm
Location: Wrocław

Re: Torn rear hub

Postby StridaFanatic on Sun Nov 25, 2012 9:19 pm

November last year I patched up my broken hub. I was able to drill a new hole in the flange next to the broken part. After 12 months and approximately 4000km it's still holding :D

Open the pic in a new window for a better overview.
Image
User avatar
StridaFanatic
 
Posts: 5
Joined: Mon Nov 07, 2011 9:56 pm

Re: Torn rear hub

Postby Chester_Tan on Tue Jan 06, 2015 10:44 am

Suffered the same fate. Broken rear hub because of over tension. The mechanic didn't notice that part of the flange was already torn. I had to buy a fresh set of wheels. Fortunately, there's a guy who needs the front wheel so we split the bill.

Now, the new wheel is untrue. It must be my weight (170 lbs) and poor road conditions.

I just hope Ming would come up with a better hub design or replace my broken hub.
Chester_Tan
 
Posts: 97
Joined: Thu Oct 06, 2011 5:52 am

Re: Torn rear hub

Postby Blackstridaaustria on Tue Jan 06, 2015 10:54 am

Hi Chester, indeed verry sorry to read that...
But please, one thing for clarification:
You're speaking of 16 inch wheels, correct?
User avatar
Blackstridaaustria
 
Posts: 1410
Joined: Mon May 24, 2010 8:44 pm
Location: 48.20938,16.370287

Re: Torn rear hub

Postby Chester_Tan on Wed Jan 07, 2015 3:26 am

Yes BSA the 16" wheels the hub with the holes in them.
Chester_Tan
 
Posts: 97
Joined: Thu Oct 06, 2011 5:52 am

Re: Torn rear hub

Postby Chester_Tan on Wed Jan 07, 2015 3:28 am

Yes BSA the 16" wheels the hub with the holes in them. Ming should redesign the rear wheel to use 36 spokes instead.
Chester_Tan
 
Posts: 97
Joined: Thu Oct 06, 2011 5:52 am


Return to Riders Reports

Who is online

Users browsing this forum: No registered users and 7 guests