how to: magic chain ratio on your single speed bike, no chain tensioner!

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  • Опубліковано 3 жов 2024

КОМЕНТАРІ • 106

  • @hopetofly
    @hopetofly 2 роки тому +4

    firssst🤙🏾

  • @bremacpherson-rice4880
    @bremacpherson-rice4880 8 місяців тому +3

    wow this was so helpful! been having some issues w my frankenstein single speed build as my chain has stretched and i'm really keen to try this. thanks legend!

  • @DIY-DaddyO
    @DIY-DaddyO 2 роки тому +2

    That’s genius. No tensioner is such a bad as clean look. I’m building mine from the frame up so I can play with the gears to hit the inch’s I wantand make the bike clean looking. Thanks man ❤️☝️⚙️

    • @garysprojects
      @garysprojects  2 роки тому

      Hell ya dude once I went this way I never went back!!! Cheers ! 🍻

  • @CandidZulu
    @CandidZulu 10 місяців тому +1

    Thanks super helpful! I used it and found it best to take the wheel off to get a good measurement.

    • @garysprojects
      @garysprojects  10 місяців тому

      Nice that’s a good tip tip ! Thank you

  • @vicsimmonds
    @vicsimmonds Рік тому +1

    Great info Gary, love the magic fingers 👌

  • @joelmason6358
    @joelmason6358 2 роки тому +1

    Thanks mate this worked a treat

  • @kenjineered7750
    @kenjineered7750 2 роки тому +3

    Thanks man, really interesting website! I was wondering why SS bikes often have their saddles angled up instead of flat like a road bike or XC? Maybe you can do a video about that? As always, I enjoy the channel!

    • @garysprojects
      @garysprojects  2 роки тому +1

      They are tilted back on dirt jumpers and bmx bikes because the cockpit area is smaller. This allows your weight/hips to be more back and have more room, also provides more grips on jumps and stuff. If you try to have it horizontal and seat low on a dj bike it will feel really weird! Cheers man appreciate the kinds words!

    • @kenjineered7750
      @kenjineered7750 2 роки тому +1

      @@garysprojects Cheers - you solved a mystery for me!

  • @jackhowie870
    @jackhowie870 2 роки тому +1

    Looks good Gary! 👌👌

  • @myvicariouslife4012
    @myvicariouslife4012 2 роки тому +1

    Built a gnarly lugged trek for a designated urban assault vehicle. Fortunately the chain ratio 2.4 or 2.something works out for my old knees. Was trying to go 3 to 1 but realized I did not want to spend 50$ plus for a different ratio.

    • @garysprojects
      @garysprojects  2 роки тому +1

      Niceee glad it work out! Ya sometimes better to use what u have

  • @kisinn
    @kisinn 4 місяці тому +1

    Awesome, thanks 🙏

  • @martinluther673
    @martinluther673 11 місяців тому +1

    Valuable video thanks m8

  • @luigiprovencher
    @luigiprovencher Рік тому +1

    Someone told me 42x16 but that's just by what I told them over the phone. They don't know what my chain stay was but the biggest chain ring in the front was actually 42 though.

  • @supatanbikesco.2097
    @supatanbikesco.2097 2 роки тому +1

    Legenddd this is dope 🔥

  • @frogrides
    @frogrides Рік тому +1

    Watching this again thinking about my Kona Scab 🤓

  • @BrenttttttMCMXC
    @BrenttttttMCMXC Рік тому +1

    Thanks

  • @luigiprovencher
    @luigiprovencher Рік тому +1

    Damn it figures. I already took off everything.

  • @hookerjl1
    @hookerjl1 2 роки тому +1

    Hi Gary, looks like a really clean setup👍🏻😎

    • @garysprojects
      @garysprojects  2 роки тому

      Cheers man I’m pretty happy with how it turned out too!

  • @lbg2160
    @lbg2160 2 роки тому +2

    Hey Gary! This video cleared up a lot for me but when you're turning it into a single speed do you keep the original chain? Or purchase a single speed specific chain? Also how do you figure out that perfect chain length? Cheers keep up the videos!

    • @garysprojects
      @garysprojects  2 роки тому +4

      Cheers man, usually u can determine by what cog width and chain ring width you have. It will either be 1/8” or 3/32”, I’m running 3/32” which is a 6/7/8 speed chain. And for the perfect chain length for the magic ratio, you should be able to wrap it around the cog and chainring and cut it where it meets. Hope that helps! Cheers

  • @charlieamos6640
    @charlieamos6640 2 роки тому +1

    Those saint cranks look awesome....dont ever sell them full colllector items lol

    • @garysprojects
      @garysprojects  2 роки тому

      Hahah yea these are my fav version too, love the shape and graphic of this model!!

  • @glennpettersson9002
    @glennpettersson9002 2 роки тому +1

    Cheers.

  • @Prophet6OO91
    @Prophet6OO91 2 роки тому +2

    How do you measure chain stay length? Centre to centre of rear axl and BB? Cheers bro love your vids

    • @garysprojects
      @garysprojects  2 роки тому +2

      Cheers man ! Yep that’s it, exactly how u explained it!

  • @anakinskymonke3670
    @anakinskymonke3670 9 місяців тому +2

    After 2 years, how did the chain tension go?

    • @garysprojects
      @garysprojects  9 місяців тому +2

      Need a new chain now I think haha !

  • @luigiprovencher
    @luigiprovencher Рік тому +1

    So you have no more tensioner anymore and oh wow I didn't know that you could see clear through the other side with that type of drive system. How do you go from freewheel to cassette style wheels? Do you have any videos on that?

  • @nhathao17
    @nhathao17 Місяць тому +1

    Which gear should be used for a 45cm chainstay, i’m wondering between 40/17 and 34/15. Thanks.

    • @garysprojects
      @garysprojects  Місяць тому

      I’d go 40/17

    • @nhathao17
      @nhathao17 Місяць тому +1

      @@garysprojects Thanks. I’ll try that.

  • @nicklaw1168
    @nicklaw1168 11 місяців тому +1

    I have tried using this calculator and I don’t understand the subtle variations, when changing the chain length, we can only modify by 1” or .5” increments, same with adding or removing cog teeth, so I don’t understand why the graph shows so many plot points that suggest such minimal changes is ideal chainstay lengths, can you help me understand?

    • @garysprojects
      @garysprojects  11 місяців тому

      It’s showing all the different gear ratios you can use , front chainring & back cog size combinations. You should pick one that falls on the line

  • @chrissomers-oco8163
    @chrissomers-oco8163 Рік тому +1

    Great vid. Did you end up with slack when the chain stretched?

  • @paultrevino81
    @paultrevino81 2 роки тому +2

    I like the 34 16 because you have a bit more top speed and can still climb. What did you think 🤔

    • @garysprojects
      @garysprojects  2 роки тому +1

      Yeah same, I have a bit more top speed just if I need it for jumps , but still easier to cruise around town

    • @paultrevino81
      @paultrevino81 2 роки тому +1

      Yeah I just recently moved, and where we live now there's no trails so it's all around town.

    • @garysprojects
      @garysprojects  2 роки тому

      @@paultrevino81 ahhh true, yeah pretty good for flat

  • @stevecrump1375
    @stevecrump1375 2 роки тому +1

    I like it...👍

    • @garysprojects
      @garysprojects  2 роки тому +1

      Thank u! 😊

    • @stevecrump1375
      @stevecrump1375 2 роки тому +1

      @@garysprojects make the most of this good weather Gary...Get lots of use with all those bikes my freind. ..Enjoy your fun in the sun...lifes a bike...🙌

    • @garysprojects
      @garysprojects  2 роки тому +1

      Cheers Steve! Same to you 😊

    • @stevecrump1375
      @stevecrump1375 2 роки тому +1

      @@garysprojects im loving it...Holiday at home bike riding 😃

    • @garysprojects
      @garysprojects  2 роки тому

      @@stevecrump1375 ayyy that’s the way!

  • @luigiprovencher
    @luigiprovencher Рік тому +1

    You can't use it without the derailleur hanger? I wonder if the have like a blank one that you could put in there. How many bikes do you have?

    • @garysprojects
      @garysprojects  Рік тому +1

      Nah u need the derailleur hanger in there otherwise there will be a gap

    • @luigiprovencher
      @luigiprovencher Рік тому

      @@garysprojects Yeah but that's why I'm saying that there's got to be a different one though because you're not using a derailer and I think that things an accident waiting to happen. What if it catches on something?

    • @garysprojects
      @garysprojects  Рік тому +1

      @@luigiprovencher no problems yet and it’s been a couple of years

    • @luigiprovencher
      @luigiprovencher Рік тому

      @@garysprojects Okay. Cool.

    • @anakinskymonke3670
      @anakinskymonke3670 9 місяців тому +1

      @@luigiprovencher Although not a clean look, that rd hanger will make it a bit stronger

  • @luigiprovencher
    @luigiprovencher Рік тому +1

    Can the chain stay be eye balled?

    • @garysprojects
      @garysprojects  Рік тому +1

      Nah it’s better to measure for this one

  • @will_m0
    @will_m0 Місяць тому +1

    the link is not working'

    • @garysprojects
      @garysprojects  Місяць тому

      dang you're right, if you find a new one post it up here - cheers

  • @ロムプレー
    @ロムプレー 9 місяців тому +1

    is single speed chain better? or 8speed chain?

    • @garysprojects
      @garysprojects  9 місяців тому

      Depends what you are using it for and what size your chainring & sprockets can handle , 8speed chain will be lighter

  • @Dre1_u
    @Dre1_u 2 роки тому +1

    can i use anything inside the blue line?

  • @domclues4655
    @domclues4655 2 роки тому +1

    Hello Gary
    What size chain will I need ?

    • @garysprojects
      @garysprojects  2 роки тому

      Depends on on what cog and chain ring thickness you’re using! It is most probably going to be 3/32 if you’re using converting from a geared bike. Basically a standard 6/7/8 speed chain

  • @badger67
    @badger67 2 роки тому +1

    👍

  • @nzo_6543
    @nzo_6543 2 роки тому +1

    I have a 12t rear cog, What is the best chainring to have a perfect chain tension?

  • @hmudesign
    @hmudesign 5 місяців тому +1

    What an awesome video, thank you. I just did this, measured many times, ordered some parts but for some reason there is a bit of a slack in my chain. Chain will still stay on and all, but anything one can do to fix a little slack? I’m running 11 speed dura ace chain. If I was to get some 8 or 9 speed chains, would that matter in any way? I’m open to suggestions. Thanks

    • @garysprojects
      @garysprojects  5 місяців тому +1

      Cheers mate ! Mmm I’m not sure , the 8 speed chain you will get less side to side slack but I think overall length is same measurement as the 11 speed if I recall correctly. If you have any spare cogs you could try going up a teeth and see if it fits. That’s all I can really think of, sorry !

    • @hmudesign
      @hmudesign 5 місяців тому +1

      @@garysprojects Ok, so I brought out a brand new Dura Ace chain, shortened it down to my 51 links 44/19 and it’s perfect, just like in your video. I must have grabbed a worn chain by accident and shortened that one hahah. Excellent, I’m loving the cleanliness of this simple setup, no tensioner. Thanks again for the awesome video.

    • @garysprojects
      @garysprojects  5 місяців тому +1

      @@hmudesign hell ya I’m glad it worked out !! Great to hear it ! Cheers mate ✌️

  • @sylvainp.178
    @sylvainp.178 2 роки тому +1

    😍🙌

  • @Renan.1001
    @Renan.1001 2 роки тому +1

    how many chain links did you use? I will use the same ratio as yours, 34x16

    • @garysprojects
      @garysprojects  2 роки тому +1

      Not sure ay, I just wrapped the chain till it was tight !

    • @Renan.1001
      @Renan.1001 2 роки тому

      I thought about that too, I'll do the same as you. helped me a lot thanks friend 🤝🏽👍🏽

    • @Renan.1001
      @Renan.1001 2 роки тому +1

      another question, is there no danger of the chain getting too tight and ending up breaking, or the gears wearing out quickly?

    • @garysprojects
      @garysprojects  2 роки тому

      @@Renan.1001 if you have the correct ratio it should be fine, also the chain will slightly stretch over time too. It could wear slightly more in the beginning but no different to having a single speed and pulling the wheel back on the dropouts

    • @Renan.1001
      @Renan.1001 2 роки тому +1

      I understand, thanks friend, a hug🤗

  • @domclues4655
    @domclues4655 2 роки тому +1

    Hello Gary
    What size chain I need ?