bobinski
Legendary Member
- Location
- Tulse Hill
NEO (cough...)
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I agree Paul, if it works loose again I will install a strong spring washer and a thicker washer and get a slightly longer bolt to cover increased thickness. £1 in parts
Silly question, no doubt, but how does it not slip if it is ribbed rather than toothed?I had an issue this morning with my new Kickr'18. I think I've sorted it. I began to get a clunky noise as if the BB was going to fail. after I finished my workout I began tracing the noise. I eliminated the crank by pedalling single footed, to see if it was on either side of BB, noise still present with either foot. I removed bike from Kickr and when turning I could hear a knock from the mechanism. I removed the side cowling to reveal the pulley's. Grabbing the large belt pulley and pulling it followed by an abrupt stop I could make the clunk noise. I traced it the bottom pulley with a Allen bolt holding the pulley in place. It was only finger tight. I removed it to see a little metal powder(it had been moving/rubbing) .The washer on the bolt is/has become cupped due to pressure. it's not a good design and really needs a spring washer under a thicker outer washer to apply pressure to the Woodruff key, which keeps the pulley snug on the shaft. I've applied more thread lock, because there was nt enough in my opinion and tightened up more than finger tight View attachment 432526 View attachment 432527 . Everything is now quiet again
see here new pulley and belt design (ribbed not tooth belt) for silent running. tensioner is almost identical to earlier Kickr design- beefed up design.
Must admit, if I had hindsight I wouldn't get a Kickr again. Too many weak points for me (belt, screws - I've sheared a few trying to get the belt tight, slipping). Slow cadence and high pressure I just don't trust the Kickr not to always slip! (and no, I haven't given Wahoo £50 yet for a belt I can get for a fiver
)
Aleman
Knees are FUBAR but I don't like to mention it
- Location
- Blackpool UK
I suspect the ribs when under tension, grip the matching ribs on the pulleys though a bit of flex in the side walls.
Sorry, need a day off after 3 days of racing. Really felt the fatigue in the legs during the KISS race yesterday, 20 minutes with the C leaders was all I could manage and I paid for it for the next 30 minutes.
Larger pulley's, so more surface area to grip. Also it's ribbed, so area increased further.
Must admit, if I had hindsight I wouldn't get a Kickr again. Too many weak points for me (belt, screws - I've sheared a few trying to get the belt tight, slipping). Slow cadence and high pressure I just don't trust the Kickr not to always slip! (and no, I haven't given Wahoo £50 yet for a belt I can get for a fiver
But the belt you bought doesn't work. The one I got from Wahoo, went on, tensioned up fine. Not a single problem with it, 1300W sprints and standing starts to 500+W, no slippage at all.
There must be something different?
I've had my Kickr for years and the previous owner to you never mentioned it slipping. Get the right belt first, if it doesn't work with the guidance I posted, let me look at it.
When the fly wheel is moving I get no slipping at 500 watts, the problems occur at low cadence only (below 65 rpm). I do need to get another belt but I'll try another car belt as these have the exact same teeth, length etc as the wahoo one and the cheaper ones have been used by others with no problems at all.
All it really means is I ride at 40% on Zwift as anything over 7% reality just slips, and I can't ride on Bkool (even if I wanted to) as you can't change realism on there.
When I first got it, for the 3 rides before the belt snapped, it did seem OK and I was at 100% realism. I'm just reluctant to pay £50 for something that should be no more than a tenner.
Brendan Parker
Veteran
- Location
- essex, england
I had an issue this morning with my new Kickr'18. I think I've sorted it. I began to get a clunky noise as if the BB was going to fail. after I finished my workout I began tracing the noise. I eliminated the crank by pedalling single footed, to see if it was on either side of BB, noise still present with either foot. I removed bike from Kickr and when turning I could hear a knock from the mechanism. I removed the side cowling to reveal the pulley's. Grabbing the large belt pulley and pulling it followed by an abrupt stop I could make the clunk noise. I traced it the bottom pulley with a Allen bolt holding the pulley in place. It was only finger tight. I removed it to see a little metal powder(it had been moving/rubbing) .The washer on the bolt is/has become cupped due to pressure. it's not a good design and really needs a spring washer under a thicker outer washer to apply pressure to the Woodruff key, which keeps the pulley snug on the shaft. I've applied more thread lock, because there was nt enough in my opinion and tightened up more than finger tight View attachment 432526 View attachment 432527 . Everything is now quiet again
see here new pulley and belt design (ribbed not tooth belt) for silent running. tensioner is almost identical to earlier Kickr design- beefed up design.
Seems like a common fault
One and the same
It's using the wrong washer. a simple mistake which can cause ill feelings if not addressed quickly. Knowing Wahoo products they will
