Share this project


Share this project

Bike bells generally look and sound a bit ugly. But why? What if they looked sexy and sounded like an angel playing a glockenspiel?
Bike bells generally look and sound a bit ugly. But why? What if they looked sexy and sounded like an angel playing a glockenspiel?
Created by
20,787 backers pledged AU$ 1,078,634 to help bring this project to life.

Oi Product Questions [with vids and pics]

Posted by Knog (Creator)

Hi Backers,

As more bells land in your hands, there are some FAQs that we thought it would be helpful to answer for all backers:

1. The "Titanium Classic” bell

- Some of you have mentioned you have received a Classic instead of a Ti bell. In fact the Classic comes in Titanium as well as the four Aluminium models. See the image below which shows a “silver” aluminium bell on left and Titanium on right. You can check the model number on yours to be sure. Bells with 1200...K are Titanium.

Both Classic: Aluminium on left, Titanium on right.
Both Classic: Aluminium on left, Titanium on right.

- Also with Ti, there are two designs: Ti White (we introduced this as a stretch goal) and Ti “Black". The colour refers to the mount colour, not the ringer. Sorry if this caused any confusion.

2. Unwanted rattle coming from bell 

When the bell is overtightened, the screw may get too close to the ringer and cause an unwanted tapping noise. Please ensure the bell is firm on your bar BUT NO TIGHTER. See below for what it should look like. If this doesn’t solve your ringing problem, you have a faulty bell. Please follow the procedure set out in previous update for getting a replacement.

Tight enough, no more.
Tight enough, no more.

3. Faulty bells

- As we’ve mentioned in previous posts, and as has been evident from the comments, there was a problem in production that caused an error rate with a small proportion of bells. This meant that the bell gave a thud rather than rang out. We wanted to show you the difference between a good and bad bell. 

 project video thumbnail
Replay with sound
Play with

- Of course, there will be very minor differences in sound between working bells, but if the bell sounds like the bad one in this video, then it is faulty and we will replace. Just send us a video file link in a DM (e.g. DropBox, iCloud, GoogleDrive etc) of the faulty bell.

4. Sizing

- The small bell only fits bar diameter 22.2mm. 

- The large bell includes shims to it can fits bars larger than that up to 31.8mm. The shims are located underneath the grey tray, tucked inside the circular extrusion.

Hope this helps for those with the queries above.

Cheers, Sam

Kimura Kazutaka, Jason Forbes, and 59 more people like this update.


Only backers can post comments. Log In
    1. Knog 3-time creator on

      @Luis Eduardo Dejo: Thanks for the update. We will chase this up for you to see what the issue is. If your order has been lost in the post then we will of course reship your order to you.

    2. Luis Eduardo Dejo on

      I haven't received my bell yet. According to the tracking number, it left China in Oct 28th and that's all..."in transit"

    3. Knog 3-time creator on

      @Oleksii Baida: Thanks for the message. If you have a faulty bell then the best thing to do is email us at and attach the video or you can send us a direct message (click on the 'created by Knog' link at the top of the page) and send us through the link to the video file.

    4. Knog 3-time creator on

      @Theron Dom: According to your tracking details your bells were successfully delivered on the 21st December. We have just resent you the tracking link via DM.

    5. Oleksii Baida on

      Hello. I have got my bells in December, and one sounds perfect, but second... Not so sure.
      In previous posts, you have mentioned that some fixes could be done by the customer himself. Could I get the instruction?

    6. Missing avatar

      THERON Dom on

      HI ,
      I haven't receive my bells already !!
      where are they ?
      Dominic ( $ 8 985 )

    7. Knog 3-time creator on

      @Christine Rudansky: Thanks for the message. We just need you to choose what size bell you need & then we can ship this to you. We have just resent your survey to you so you can complete this info.

    8. Christine Rudansky

      I haven't received my order (Christine Rudansky). I sent through an address change in late summer, but just to be sure, the address is 1045 Michigan Ave. Unit B, Miami Beach, FL 33139.

    9. PrettyGreenParrot on

      My bells arrived earlier this week. Backer #3,255. They look neat. Not yet had the time to fit any. The couple I tried out of the box made a nice 'ding' noise.

    10. Knog 3-time creator on

      @Paul Hance: If your bell doesn't sound as it should then you can either email us at and attach the video or you can send us a direct message (click on the 'created by Knog' link at the top of the page) and send us through the link to the video file.

    11. Paul Hance on

      Hello ,

      My bell is bad. It doesn't ring just like the bad bad bell. I just setup two days ago. Can I get a replacement? Thank you very much.

      Paul Hance

    12. Knog 3-time creator on

      @Hector: We have emailed you the tracking details for your order. Should be with you shortly :)

    13. Missing avatar

      Hector on

      Hello, I wanted to know the status on my order (Order #500002268).

    14. Knog 3-time creator on

      @Hans Grimm: You're right, your order should have shipped by now. We will chase this up for you to see what the delay is.

    15. Hans Grimm on

      When do I receive the bells I ordered??? This is taking way too long...

    16. Knog 3-time creator on

      @Daniel Sparks: Yep, we will have this resent to you.

    17. Knog 3-time creator on

      @Sven Johannsen: It appears your order has been lost in transit. Therefore, we will reship your order out to you direct from Knog HQ this week. Apologies for this.

    18. Knog 3-time creator on

      @Carol Wiebe: Great to hear you received the goods. Please enjoy :)

    19. Knog 3-time creator on

      @Gabrielle Salamone: We have just resent your tracking details to yo so that you can monitor the progress of your order. Will be with you soon.

    20. Missing avatar

      Sven Johannsen on

      Hallo wollte mal fragen wann ich mit meinen Klingeln rechnen kann?

      Gruß Sven Johannsen

    21. Missing avatar

      Daniel Sparks on

      Hello, very sorry to be a pain but could you re send me the email with the tracking details for the replacement bell. I am unable to find it in my inbox!!

      My black Knog bell is working flawlessly :O)

    22. Missing avatar

      Carol Wiebe on

      OK--ignore previous comment. We have the bell and it works just fine. I think I was dreaming when I posted the previous comment, lol.

    23. Missing avatar

      Carol Wiebe on

      I have not received my bell yet--should I be worried?

      CAROL from CANADA

    24. Gabriele Salamone on

      i still don't received my Oi, is it right or not?
      Is there any check i can do about it?

    25. Knog 3-time creator on

      Thanks for the notification Henrik. We will chase this up for you. If your parcel is lost, then we will of course reship this to you.

    26. Henrik Nerup Rant on

      I received my shipping mail on October 18 (including tracking # etc.). Latest update on the tracker (28th of October) site is: "Leaving parcel center【上海浦东】 Sent to airline China Post ". When will my Knog arrive?

    27. Knog 3-time creator on

      @Jonathan Pitt: We need you to complete your Backerkit survey first before we can send a bell to you. This is so we know what colour/size bell you want and what address we can send this to. We have emailed the survey to your Kickstarter email address. Alternatively, you can fill out the survey via the following link >> Once complete, we will add your order to the next production run and get your bell out to you.

    28. Jonathan Pitt on

      I was supposed to receive my bell in August but haven't gotten anything yet. Please advise.

    29. Knog 3-time creator on

      @Jason Koning: We will look into this for you & chase up.

    30. Jason Koning on

      I STILL have not even had a tracking email!

    31. Knog 3-time creator on

      @Mauricio: You should have received tracking details via email by now. We will Dm you the link to your tracking info. Please note, that this is sent to your Kickstarter email address.

    32. Missing avatar

      Mauricio Miranda on

      Hi. A bit lost on why haven't I gotten my bells. Please do tell me where to refer to find shipment updates.


      (a backer)

      PS Did got an email saying it was to be shipped a few weeks back.

    33. Missing avatar

      Romney on

      Found your email below and have used that to share.


    34. Missing avatar

      Romney on

      What email address do I use to share video in dropbox?
      My bell clunks when struck and two bells rattle when downhill on a not completely smooth road.

    35. Knog 3-time creator on

      @fabio: we have had contact with you on the 27th Oct where we gave you tracking details. You have not contacted us via DM since. Now that you've alerted us, we've had a look, and can see from the tracking details that the parcel is in some sort of loop at the airport. We will investigate and provide a solution via direct message (DM).
      @DG: I've checked our DM and emails - we have not received a video from you since we responded to your inquiry on 19 Oct. Please check your sent items, then send a link to a video via DM.

    36. Missing avatar

      DG on

      Hi i sent a video of defective bell long time ago with no follow up so far.

    37. Missing avatar

      fabio pandini on

      Still no bells. Received tracking number over 3 weeks ago and bells should have arrived by ten days. There appears to be no direct way to contact Knog about this so have left messages on the Kickstarter website. Tracking number useless as it stopped tracking 2 weeks ago with the message "delivery shortly" If they don't sort this out quickly, I shall be demanding my money back.

    38. Knog 3-time creator on

      @Aaron - 11978K is small brass.
      @Jeff Darmawan - pls send video via direct message. Attachments aren't possible so you'll need to send a link to the file (eg via dropbox, iCloud, GoogleDrive).
      @Wai Yong Chin - we will get in touch directly.

    39. Aaron Lu on

      hello!! 11978K is Titanium Verson??

    40. Pete Tyler on

      Just fitted my 4 bells. wasn't sure which was alloy or Titanium, now I see the series numbers on the box is different, how can you tell from the bell?? Fiddly to fit and don't work too well on MTB bars, did no one think about the gear and brake shifters. And the shims are either too big or too small, good old insulating tape to the rescue. They are OK now, not over impressed. Expensive and look a bit fragile. Have kept my old bells, I reckon they will be back on soon. Sorry Knog, could do better!!

    41. Missing avatar

      bird900 on

      I was very happy about the bell and thought when ordering that I would attach something special to the bike but the opposite was the case. The valence leaves something to be desired and in the city one will not hear the bell .... it is simply too quiet. After the disappointment I have then auctioned them directly at Ebay .... sorry again to the buyer!
      For the everyday use I can not recommend it in any case.

    42. C.w. Lee on

      it seems I got the bad version bell...
      will send video to you after recording later

    43. Missing avatar

      Mathew Marques on

      Glad to have received my Oi. It's great, but in adjusting it so it wasn't too tight I've lost the bolt. Where can I get a replacement?

    44. Missing avatar

      Wai Yoong Chin on

      I bought 6 bells (4 titanium, 1 copper and 1 brass) for ourselves and family. None of them fit the handlebars despite putting the shims on. The bars have a diameter of 23.2mm, so according to your instructions, they should fit as it is larger than 22.2mm. I would like replacement bells that we could actually use as these bells were not cheap. I am unable to test the bells when mounted but they seem to sound ok when hand held.

    45. Missing avatar

      Daniel on

      Finally received the bell.
      and it rings nicely (I am one of the lucky ones apparently) but it is not loud enough for noisy environments.
      And the execution is terrible (flimsy plastic and cheap looking springs).
      It is by far the cheapest looking (but quite expensive in fact) component on my Ti bike.
      This is an example of a good idea and a good initial design, wasted because of a terrible implementation and choice of materials. Bye Knog

    46. Knog 3-time creator on

      @Jeff Darmawan: Please email and we'll chase this up for you. Alternatively, send us a direct message by clicking the created by link at the top of the page.

    47. Jeff Darmawan on

      Just received my 5 bells (all colors). 3 don't sound right, and 2 working one are Not loud enough to be put to use on even not so busy streets. I've emailed back 2 days ago but still no reply yet. Can I get someone to help me here? Working email address perhaps. Thanks

    48. Missing avatar

      Ross Ford on

      Living my 5 bells!

    49. Knog 3-time creator on

      @Yoav Tzabar: Once the order lands in the destination country it is then picked up by the local postal service, AusPost or Royal Mail etc. From this point it can take up to 21 working days for the parcel to arrive in your mailbox. We have flagged your order and are chasing this up with both DHL and the local postal service. If the parcel is lost, then we will of course resend.

    50. Knog 3-time creator on

      @Todd Jankiewicz: You can either email us at and attach the video or you can send us a direct message (click on the 'created by Knog' link at the top of the page) and send us through the link to the video file.