Hello everyone

 

I have had my Wisper 905SE for 4 weeks now and have discovered a major flaw.

 

Yesterday I noticed a grinding noise while cycling. I stopped to check and was horrified to discover the main wire running from the motor to the battery was getting caught in the wheel spokes.

 

Upon closer inspection, I found the wire had worn away and the inner wiring was exposed! This is a serious problem. I was extremely lucky that I caught onto the problem in time, as had the wire worn just a millimetre more, it would have short circuited and ruined the bike.

 

I have attached a photo to this post.

 

For a £1200 bike, this is unacceptable. I have had to put insulating tape around the exposed wire to prevent water getting in.

 

This happened as there is NO proper cable tidy keeping the wire away from the moving wheel. It was just tucked behind the mudguard. This is nothing short of shoddy workmanship. I now need to purchase a cable tidy to prevent this happening again.

 

Other owners of this bike should beware and make sure the wire is properly tied away.

 

I am not happy about this and very disappointed in Wisper. Nothing short of appalling.

Zip tie the cable? Also what's supposed to me in the hole next to it? Possibly a cable guide? Have you checked that something hasn't fallen out in the box?

just checked mine and there's a black cable tie holding the wire securely in place. And you've lost a bolt as shown in the photo..

 

If Wispers were aircraft your problem would be cause for worldwide bulletin, but I guess your posting is the next best thing. Thanks for the heads up on a possible problem

Thanks i've just added a cable tie to mine; I think it is a 'spare' hole rather than a missing bolt as there is nothing in mine.

I called the retailer and he said that nothing had fallen out and there wasn't supposed to be anything in the hole! Bizarre.

I'd plug that hole with something, you don't want rain getting in there.

My cable runs under the frame (at that point) and is secured by a tie, there is also a bolt plugging that hole.

Thanks for the warning, oregon. I have just checked, and mine is the same as yours - nothing plugging that hole, and nothing holding the cable securely in place. I will be cable-tying mine before riding again, and probably wrapping a bit of duct tape around the frame to seal that hole! I agree that this is pretty shoddy for a £1200 bike. However, Doug and David have been absolutely excellent in sorting out any issues I have had, so it's probably worth putting this in the Wisper Clinic section for them to pick up. I'm sure they'd be as appalled as you are about this...

Howard

I suppose the best option would be to attach a metal cable guide using the tapped hole, anyone know the thread for the hole?

Edited September 3, 200817 yr by the_killjoy

The hole is threaded for Metric 5, A chainguard would probably use that hole as part of it's fixing. The upgrade to a 53 teeth chainring would make fitting a guard unlikely.

 

Regards

 

Bob

I think that the hole will take any one of the Metric bolts used throughout the bike. On my bike there are numerous locations with similar holes filled with 'spare' bolts so it shouldn't be difficult to fill the offending hole with something neater than tape - Wisper can supply spares on request.

My bike also has an empty hole which requires a bolt for sealing. I checked the cable run, this has two holding clamps along the leg of the frame and no slack which could rub on the wheel, but for safety I will also attach a cable tie adjacent to the mudguard position.

 

Thanks for the heads up.

John

I used a spare bolt left over from the mudguards and then tucked the cable behind it, it is missing a tie from slightly further along the bike but I thought that was just a one off small problem on mine.

Take your pick!

 

A bolt in a hole

 

A storm in a teacup

I just went and had a look at mine; there are 2 clamps holding the wire to the frame, a cable tie holding it by the mudguard, and a bolt in the hole.

 

Regards,

 

Elephants

Design flaw

 

Hi Oregon

 

Thanks for bringing this to our notice!

 

Have you contacted us or your supplier yet? If not please do so and it will be rectified immediately.

 

You are absolutely correct this is totally unacceptable, if anyone has the same problem please drop us a line ASAP.

 

either

 

doug.gosling@wisperbikes.com or me at miall@aol.com.

 

Please accept our apologies Oregon and thanks again for bringing it to our attention and letting other new 905 owners know.

 

Best regards David

Changes to inspection

 

Hi again Oregon

 

I have just spoken to the QC guys at the factory. The fault had already been identified. It appears that one or two got through checking but we have put in new measures to ensure this does not happen again.

 

FYI as a result of this we have increased the full inspection from 20% of bikes to 100% as of today.

 

This is mind numbingly boring but here is a link to the video of the full inspection!

 

Best regards David

David

 

I called the shop and told them what had happened.

 

He advised me to put tape around the exposed wire and use a cable-tie.

 

He said it would not really be worth the hassle of cutting and adding new wires/soldering. Is this the case? Can just the wire not be changed over?

Which shop?

 

Hi Oregon

 

Can I ask which shop?

 

Best regards David

Bolt hole

 

Hi all

 

You can see the bolt in the hole in the images below. It was originally put there to hold the electrical socket to disconnect the back wheel but this is now under the new "sump" so it is no longer required. If anyone has difficulty finding the correct bolt to fill it please drop me a line.

 

Regards David

 

[ATTACH]398.vB[/ATTACH]

David

 

It was the electric transport shop in london