BMX Gearing Explained

BMX Gearing Explained

Ever wondered why we use numbers like “53”, “54” and “55” for BMX gearing? Hopefully this video goes someway towards explaining how we come up with those numbers. This is the first draft of this video, so please give me your suggestions on how I can improve it. It’s a little confusing in the middle but I’ll iron out those bugs if you think I need to. Thanks.

50 Comments

  1. melkel2010 on January 25, 2023 at 2:51 am

    starts at 3:48

  2. Toniche Cavalari on January 25, 2023 at 2:54 am

    Simple question here ‘
    "What will make it easier going up hill" ?
    a small front crank sprocket or a large crank sprocket ?
    I have been asking this question in several videos and l can’t get a straight answer. Some tell me "small" front sprocket for going up hill, and some tell me "large" front sprocket for going up hill.
    Which one is it ?
    I’m only refering to the front crank pedal sprocket on a bicycle.
    No changing of rear wheel sprocket either.

  3. Jonathan Nilberg on January 25, 2023 at 2:54 am

    I thought this was a good and informative video, especially because it sparked some really good questions that I think a lot of BMXers have but aren’t sure how to ask.

  4. 0.0 on January 25, 2023 at 2:55 am

    Oh I’m running 48/12, lmao im running 80

  5. Chris In AZ on January 25, 2023 at 2:56 am

    Dude thank you for doing this video I’ve been out for 15years and had no idea what these guys were saying. Dude was like I run a 55 and I was like okay I run 44 16 lol

  6. Rebel L. L. on January 25, 2023 at 2:58 am

    44 teeth…..16 teeth…..how many chain links do i need to have?….so it doesn’t keep slipping.

  7. Johnny Keel on January 25, 2023 at 2:58 am

    Sure that’s not for the crazydogggz?

  8. Rob Duncan on January 25, 2023 at 3:01 am

    Would the 20" wheel bike be very different if the tyre was 30mm on bike A , and a wide high wall 50mm tyre the numbers would come out very different on bike B ! What you should do is multiply the ratio dy the actual size of the wheel and tyre combined from ground to the top of the tyre, not just the wheel . As a small tyre on a 20" wheel will be very different to a wide fat high wall tyre on the same 20" wheel!

  9. User #4841 on January 25, 2023 at 3:04 am

    Bro. I cant stand to listen to your spit sloshing around in your mouth every 5 seconds. It’s so bad, once you hear it you can’t ignore it.

  10. Slade Prendergast on January 25, 2023 at 3:06 am

    Lol I was like wow 55teeth lol

  11. Tyler Wold on January 25, 2023 at 3:12 am

    Is 44/18 good

  12. Zawl on January 25, 2023 at 3:13 am

    if i had sprocket 25t can i buy a new 32t or i need a 25t

  13. Joshua Pierce on January 25, 2023 at 3:13 am

    28/9 runs about a 62

  14. Nammo300win on January 25, 2023 at 3:14 am

    55 really 56 if rounded up

  15. ChiTownGuerrilla on January 25, 2023 at 3:15 am

    I always thought 27/9 would be perfect, because 9 goes into 27. Guess I was right, ill have to try it.

  16. BURNTZ on January 25, 2023 at 3:16 am

    Is 40 good or bad

  17. V on January 25, 2023 at 3:16 am

    try 44.9

  18. Noah Cowan on January 25, 2023 at 3:16 am

    Only suggestion: add parentheses around your gear ratio division! Otherwise very simple explanation

  19. nixonsmateruby1 on January 25, 2023 at 3:16 am

    Sir sir, I need the toilet. (When teachers say "bare with me")

  20. Nhia Fang on January 25, 2023 at 3:19 am

    Oooo I learn something new!!!

  21. Mozez Cen-Valley on January 25, 2023 at 3:21 am

    183.6?

  22. Scott Baican on January 25, 2023 at 3:22 am

    Crank arm length also factors in

  23. leonard on January 25, 2023 at 3:23 am

    My god 👎👎

  24. The Representative on January 25, 2023 at 3:25 am

    😵‍💫🥱😴

  25. Loony Linn on January 25, 2023 at 3:25 am

    MDAS : 16*20=___ divided by 44=____

  26. Etoile on January 25, 2023 at 3:25 am

    this is hella boring and sounds like an ASMR video and I am sorry but your tung and mouth is like filled with water and it smacking and is not good but still no offense

  27. ORTHODOX BOY on January 25, 2023 at 3:26 am

    I like my 36-16

  28. Raiven Zigtech on January 25, 2023 at 3:26 am

    My bike is gear of 3812×24=76 is this good?

  29. BmxAndRoadBikeRacer69 on January 25, 2023 at 3:28 am

    I run right now a 33/18 and then you do 33÷18 that’s 1.83 and then you do 33÷18×20 that’s 36.66 it’s very short gearing I could only go 20 mph but I get from 0-18 mph in less then 2.5 seconds and it’s so fast at acceleration but horrible top speed but I’m going down to a 16t freewheel in the back to see if it will give a little extra top end I want to reach at least 25 mph in a very short distance! Eventually a 13t freewheel! I run 100psi tires too and I keep them at around 80 to 100 psi

  30. johnno Johnstone on January 25, 2023 at 3:29 am

    I’ve just come across this vid after getting back into riding after 35yrs. Very well presented and helpful. Cheers

  31. Sponge Imperium on January 25, 2023 at 3:29 am

    Is 74.75 gear inches alot

  32. Utu Langi on January 25, 2023 at 3:32 am

    Very well explained. Thank you.

  33. Nunung K on January 25, 2023 at 3:32 am

    I have 40t in the front and 18t rear sprocket on my 20" BMX. Some ppl said if I change the rear sprocket to 12t, it will be faster and lighter. Is that true it will be lighter?

  34. Chasing Sunset on January 25, 2023 at 3:32 am

    In my country.speed matters to most kids…they use 56t/8t on their ugly bmx bikes…

  35. Nelda Murray on January 25, 2023 at 3:33 am

    Very interestingly educative! Thank you so much for posting! Love the ‘ccent!

  36. Alan Clayton Righteous Violence on January 25, 2023 at 3:33 am

    Thanks man

  37. karl febrero on January 25, 2023 at 3:33 am

    i have 52t at the front and 14t at the back

  38. kai 0544 on January 25, 2023 at 3:34 am

    I have 48 front and 17 rear

  39. Zac Duke on January 25, 2023 at 3:34 am

    Mine is exactly 172.787595947

  40. Moto Rad on January 25, 2023 at 3:37 am

    The number equates it to a "penny farthing" style bike as well, for what thats worth. 55 gear inch will feel like pedaling a penny farthing with a 55 inch front wheel

  41. Mozez Cen-Valley on January 25, 2023 at 3:42 am

    Would a 29 tooth front sprocket and a 13 tooth rear sprocket pedal pretty fast and good for Street use not going to perform tricks but we’ll do bunny hops off and on just want to be able to Pedal fast

  42. Dunhell on January 25, 2023 at 3:42 am

    i have 54.48 XD

  43. Aaron J on January 25, 2023 at 3:43 am

    Oy. That was way to complicated for such dumb math. It’s not math though it’s mechanics… What about crank length?
    Much much easier to say 44/16.

  44. Coldoh on January 25, 2023 at 3:43 am

    Imo 33 12 is the best and pefect gear for bmx.

  45. Michael Welsh on January 25, 2023 at 3:45 am

    My bike runs the same type of Gearing

  46. Ivan Alcala on January 25, 2023 at 3:45 am

    I’m on 41

  47. Dwayne Robertson on January 25, 2023 at 3:45 am

    And what I was trying to find out was in between all those numbers that you’re talking about which one is the tighter gear yes I know all BMX bikes are easy to push down on a spin out your tires Tyler gear or is it all just measurements that don’t mean anything for you gearing

  48. KiP Drippers on January 25, 2023 at 3:45 am

    So 30 divided by 15 times 26 is 52 … is that a bad gear ratio for a 26 inch cruiser? 52

  49. Bronx Cheer on January 25, 2023 at 3:46 am

    Great video

  50. Paddy Friend on January 25, 2023 at 3:46 am

    So its just a method for quantifying acceleration/resistance by using a single number rather than a gear ratio?

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