Bike Erg Noise

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Baraboobiker
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Bike Erg Noise

Post by Baraboobiker » December 26th, 2019, 3:01 pm

I have noticed an annoying noise occurring every revolution of the crank, particularly noticeable at lower rpm's, i.e. 70-80 range. I've checked the tightness of the screws and all is good there. Currently less than 1 million meters on the bike. Any suggestions as to what this might be and how to fix it? -Thank you.

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Citroen
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Re: Bike Erg Noise

Post by Citroen » December 26th, 2019, 9:04 pm

Pick up the phone call Concept2 at: 1-800 245 5676

chipman1
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Re: Bike Erg Noise

Post by chipman1 » December 27th, 2019, 10:06 pm

Could be something internal, but could also be the pedal-crank threads. Take the guilty pedal off, regrease it with bike grease and tighten back up. That was my problem and it was a simple fix.

CaseyClarke
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Re: Bike Erg Noise

Post by CaseyClarke » December 28th, 2019, 6:34 am

It’s a common issue that has affected many, many BikeErgs all over the world. I’ve been unlucky enough to have had this multiple times and I’ve had 4 or 5 full front end replacements sent out to me. You can try greasing pedals / tightening screws etc, but if it still makes a noise then insist on a front end replacement.

RR
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Re: Bike Erg Noise

Post by RR » December 28th, 2019, 3:31 pm

Never had a problem from day 1,
I did change the pedals as soon as I got it and made sure they were ok
64 going on 65 One time full on erger. Now Erging and BikeErging.
LWT is the norm.
6:38.7 was a longtime ago

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johnlvs2run
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Re: Bike Erg Noise

Post by johnlvs2run » December 28th, 2019, 9:04 pm

Make sure to tuck in your laces, so they don't flap on your shoes.
This happened to me, so I always make sure to tuck them in before riding.
74 5'8 155
age 70+ world record pace per weight percentages
bikeerg: 1k 83.5 / 4k 85.2 / 30' 89.1 / 60' 89.2 / 40k 89.3
my training log

dpetzko
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Re: Bike Erg Noise

Post by dpetzko » March 20th, 2020, 8:29 pm

Just wanted to share my experience with crank noise.

I was getting a dull thud when each pedal was passing thru the bottom of the stroke...that I could also sense thru the frame to the handlebars. Issue was worse at low cadence. Worked with Concept 2 support and did all of the usual countermeasures...improved crank arm washers, loosening and reseating the crank arms against the bearing. Nothing much helped.

Then one session, I stopped pedaling at the bottom of a stroke and the thud/sensation was more pronounced. I started to experiment with pedaling technique and noticed that when I really concentrated on proper technique by pulling thru the bottom of the stroke rather than mashing the pedals, I could get the thud/sensation to stop completely. Talked to support about this and they think it's the clutch mechanism. They thought a fastener might be too tight and had me loosen a nut 1 turn, but I didn't like the results. It seemed to make the drivetrain more "sloppy". The fact that the noise was reduced at high cadence may be due to smoother pedaling...or the high cadence forces better technique. At low cadence, I think I was causing a slight delay in the crank rotation at the bottom of each stroke, not quite like stopping but similar.

So what I thought was a bike/crank issue was really poor pedaling technique. Now, whenever I start to sense the thud, I know that my pedaling technique is getting lazy.

Hopefully this will help others who might be experiencing the crank noises.

Dave

addiesmith
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Re: Bike Erg Noise

Post by addiesmith » October 12th, 2020, 8:02 pm

I have had my bike erg since early July 2020. I ride it 4-5x/week, never heavy riding, just a constant pace around 70-75 rpm at resistance 3-4. I purchased this bike upon recommendation of a friend who has both the bike and row machines from concept 2. Since purchasing, I’ve had to replace the right pedal twice, take said pedal assembly into my local bike shop where the owner had to assemble it for me as the threads kept stripping, and now there’s an annoying clunking noise on the down pedaling position on the same right pedal. I tried tightening the screws along the crank shaft, pedal, and the body between the pedals and the fan and although the clunking is less, it’s still present and still VERY annoying. For a thousand dollar bike, I have much higher standards of expectation - perhaps I’m wrong and this is what I paid for? Looking for advice as I’m clearly very frustrated.

Baraboobiker
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Re: Bike Erg Noise

Post by Baraboobiker » October 13th, 2020, 1:00 pm

I agree with you adddiesmith. As much as I like C2 products (I also have a rower), for $1k your high expectations should be met I think running to a bike store for repairs is ludicrous.

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Citroen
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Re: Bike Erg Noise

Post by Citroen » October 13th, 2020, 1:22 pm

addiesmith wrote:
October 12th, 2020, 8:02 pm
Looking for advice as I’m clearly very frustrated.
Call Concept2. They are leaders in customer service.

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johnlvs2run
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Re: Bike Erg Noise

Post by johnlvs2run » October 13th, 2020, 8:47 pm

addiesmith wrote:
October 12th, 2020, 8:02 pm
’ve had to replace the right pedal twice, take said pedal assembly into my local bike shop where the owner had to assemble it for me as the threads kept stripping, and now there’s an annoying clunking noise on the down pedaling position on the same right pedal.
Is the clunking noise from the pedal?
The right pedal on my BE goes back and forth when taking it off or putting it back on, i.e. the spindle inside of the pedal is not straight.
74 5'8 155
age 70+ world record pace per weight percentages
bikeerg: 1k 83.5 / 4k 85.2 / 30' 89.1 / 60' 89.2 / 40k 89.3
my training log

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