Shop Owner Discovers THE PERFECT GEAR RATIO FOR ALL BIKES!

In today's tech Thursday brought to you by EPIC BMX (instagramcom/_epicbmx) via Phu Vu this Shop Owner Discovers THE PERFECT GEAR RATIO FOR ALL BIKES! This video discusses the ideal ratios for 20" BMX bikes (the 36/13, 33/12, 30/11, 28/10, 25/9, 22/8) as well as the ratios for 24" 26" and 29" BMX cruisers.
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[@AlfredoMancuso]

*ATTENTION* I’m not running any giveaways at the moment, if someone using my username contacts you please report it as spam!

[@frankcastle3827]

I got you mang! Hey let me know later what you think about my old BMX nyquist bikes lol

[@jellis7042]

I think you have to have a check mark after your name to be official, correct?

[@t.s.818]

Thank you for my free Mongoose bmx. I didn't think the giveaway was real but thanks for the bike.

[@madurspecemadurspecen4635]

Jaja I just got a msg or reply on one of my comment I left, saying “I have something for you” jajajaja also this previous comment on the free mongoose jajajaja WTF

[@t.s.818]

@@madurspecemadurspecen4635 yea I didn't know Alfredo was sponsored by sabrosa x mongoose. Thank you

[@AlfredoMancuso]

Thanks for all the support boys! Closing in on 150,000 subs! Never would i have thought this could be possible! Cheers to all of you!

[@anthonymasluk2295]

Well done mate you make excellent videos

[@Rileys_dad]

Man I feel like you should have like 500,000!

[@ThatBoyFromReseda]

I’m surprised you don’t have more, you’ve been hella consistent and at it for a long time. But still, keep on truckin dude! Been here since you were at the OG OSS store doing tech Thursdays 🤌🏽

[@turntablizm12345]

Thank you for the dope content and thank you the epic bmx crew...

[@MycoJFox]

He's taught me so much about BMX. Please keep these coming!

[@Rileys_dad]

Thank you for being the most high epic bike shop leader PHU man! Alfredo is doing a great job with these videos.

[@cjay91_]

Sweet vid! That end bit with the small wheels on the 29 was funny af

[@Coffeeanddonuts]

Great explanation thank you.

[@ViridianIsland]

Awesome video. I'm sticking with my 20" wheels though. Currently running 11/30 upgraded from a 9/25.

[@fishing748]

Thanks for the vids wish I had bmx shop in my area

[@MorbidThrasher666]

I found for me the 25/9 works and the 36/13 i liked more. But i only have 80s bikes left so i rock a 44/16 or 43/16 on a 20 inch. My 87 gt pft and dyno pro compe have 43/16 but my 87 redline has 44/16. On my 86 skyway street styler i has 43/16 but 180mm redline cranks and wow super effortless pedaling to get going but too much pedaling on the top speed. So you can mess with 170mm to 185m on crank arms too for your best feeling. That clip at the end with the cruiser and smaller wheels reminded me of my 85 hutch pro star that i put 16 inch wheels on. I sued to bunny hop that thing so high. I miss it

[@davidmaerz2756]

Front gear tooth number divided by rear gear tooth number times tire size equals the gear inches . 25 divided by 9 x 20 equals 55.5 gear inches. Old school 44 divided by 16 x 20=55. This is the gear inch ratio you are lookin for, give or take a few inches or fractions of an inch. So on a 29 inch tire you could go 33 divided by 17 x 29 = 56.2. Good enough. Or 30 divided by 16 x 29 = 54.3 gear inches. It's essentially the same as the 25/9 on a 20 inch tire. I shoot for anywhere between 54- 58 gear inches. Easy peasy. I run 30/13 on my 24" S&M Dirtbike which works out to 55.4 gear inches. A higher gear inch number will give you more top end speed with less bottom end torque. And the reverse goes with a lower gear inch number. It all depends on your leg strength and spinning skills. If you like to spin hard go with 53/54. If you love top end speed and like to "chop wood" go around 57/58. Hope this helps.

[@Joebro200]

Big ripper running 33 sprocket with a 16 freewheel. Perfect set up. Had a Sunday High C with the stock 30 sprocket/13 freewheel. Loved how it felt compared to the big ripper. Now I’m back on my ripper and I went to a really similar gear set (33/16) Perfect for wheelies, not too little to rip it around town at a good pace. Idk why I don’t see 33/16 more often

[@badcommentbot8349]

Lmao thats only 42 gear inches mate 😂😂😂 my 9 year olds running 62 geqr inches bro ,you must be a little person running that gearing or q female mate

[@Madzombie11]

This is the video I needed

[@eddie_cooper]

Great video good information 👍🏼

[@bartpang]

It's funny. In 1984 when I was 14 I used a 44-13 with a 165 crank.

[@adamsmiths3016]

Thank you for all the bmx content!!! They should make phu a playable character in the next bmx game

[@chrisstephenson8311]

With flip flops too😂👍🏻

[@joebidenshearingaid1618]

This video felt like I was in science class again , except I actually listened and learned something .

[@AlfredoMancuso]

Haha mission accomplished

[@rudedawg2652]

Why no plug for your bike shop? "Welcome to another EPIC you tube video."

[@AlfredoMancuso]

Haha probably because it’s in the description, the building he’s in and the apparel he wears

[@revvolutionz]

Something’s off about this bike 🤔 🚲

[@madurspecemadurspecen4635]

I had no clue they felt the same. That makes me wanna get a 29” now!

[@tonynagle4194]

2012 is when I remember 25 to 9 on Walmart bikes I would say that's when it truly became standard

[@hushmoney2058]

In the Early 80's Racing BMX going from 44x16 to 43x16 I Got the Hole Shot every Time the Fools behind me lots of times would Lock up at the first Berm ...

[@victoravina409]

perfect timing 👌

[@steves00010]

Guilty! I over thunk this at first 2 but I have friends that have different set ups but great demo to illustrate the point.

[@csj9619]

Circumference is the distance around the outside perimeter. Diameter is out- side to outside, through the axle. Radius being half of the diameter or outside to axle

[@3mjay577]

Circumstance is around…diameter is the measurement across a circle. Fooooo out here hurting my head yet entertaining and learning me a few things

[@eyeseayew189]

Circumstance is a fact relevant to an event or action.

[@vincentsantiago2gmai]

I have redline proline pro XL 44t/16t I just use to traffic flow but I want to change it to 52t/18t to go with flow faster with traffic so tell me is it good ideal my wheel is 20”

[@swervin212]

My kluncker has a 46 in the front and unsure in the back but I'm looking to see it I can put a 36 tooth on the front but don't know if It'll help pick the wheel up a little more,the size on the wheels are 26s I believe,it's been broken for a minute and can't quite remember

[@thinkpadBentnoseTheBlind]

I love this video and I'm a mountain biker. i have legs that can climb and do things that most can not do and am 210 pounds . just lost 50 pounds . I was running a 44/52 road crank on my steel full suspension KHS with double triple RST on it. yet i could still ride with the fellas and gals and always passed them all on the ride home on the roads be it down hill or up. gear ratios are specific to the person pedaling. just because some tall guy says a 180mm crank is better for him does not mean it is good for another tall guy or gal. and microdrive drove me insane in the early to mid 90's

[@mikevida250]

i just switched from 25/9 to 30/9 on a 20" bmx, so much better.

[@als0]

27-9 on my shitluck magnolia. Perfect for trails

[@randycollins2607]

I run 30/9

[@manuelchavez3431]

I like the owner of this bike shop,,,straight up info

[@7808y]

im just tryin to figure out what ratio for my sons 24" haro slow ride if he wants it easier to ride wheelies. bike came with 39/17

[@donniejunk2860]

So glad I’m watching this b4 dropping cash on a new set up

[@gabrieltone9634]

I have a 26" Kink Drifter stock is a 25T/10T, should I change my gearing?

[@_BlueCollarGamer]

What is the exact 33t sprocket he was using. the purple one..? is it available in 30t?

[@berserkerfunestus]

Dude; does your shop ship abroad? I want to put together a rigid fork DJ/FGFS/tracklocross hybrid (I know It may not working out but then I'd just swap out a couple of parts to turn it into either) but I'm having a hard getting the parts I need to do so!

[@AricRey]

I got the cult devotion 29. Would changing the back cog from 14, to 12 or 9 make it a little 'faster' on the road?

[@west744]

Yes. You’ll get a higher top speed but harder to pedal. Same thing if you go with a bigger sprocket.

[@jampotf.1673]

Can I order ur products through online? From Philippines..I'm so desperate to build my own BMX And learn a lot from u what is better for me and this would be my 1st BMX ever to have and build ..ur so good and can't stop listening to ur voice.

[@juddy953]

Tyre size, rim size, sprocket ratios, crank arm length and the riders strength all come into play when choosing the right set up

[@robertalcorn6951]

36x16=2.25x29= 65. The chainring teeth ÷ by sprocket teeth x tire size Is the equation everybody riding should know why this wasn't said beats me. 55 is the norm 60 is med 65 is hard to pedal. That's the range .

[@pauljames4510]

2:25 2005 to 2009 25/9 gearing start to get on peeps Bmx’s I’m still running 25/9 gearing now till this day I’ve gone through The era of Bmx gearing 44 /16 45/16 36/13 28/9 25/9 👍🚲💨

[@aurteekay6339]

So if I’m using a 36t front sprocket and a 16t freewheel in the back on a 20inch bmx bike and it feels like I’m pedaling a mountain bike in first gear still should I switch to a larger freewheel? Like a 18t instead of 16t? There’s hardly any resistance from the pedals for a single speed bike it’s honestl way too easy when pedaling and I can’t catch any real speed so should I switch to bigger freewheel? Like a 18t?

[@treimar]

A great tool I always use if I want to mess with ratios is gear-calculator. Maybe not so nice to use for BMX because it lacks the wide 20 inch tire options but you can write the circumference manually also. Look it up

[@t.s.818]

28/9 is the best. Has top end and low end.

[@keam210tx]

It’s all about that crank length…amirite guys 🍻 Phu do you!

[@rodneycline5854]

Need help. I have a fairly modern 20in Walmart Mongoose. I customized it with laid back post. I way 230 so busted the rear hub on a small jump. Bought a nice ACS mag. Can't find the small 11 tooth or whatever freewheel to fit???? The few I have ordered don't thread well. I have a new suntour 14 tooth but now I have to add links to my chain and afraid the ratio will suck. Any quick tips? BTW - I miss my 1984 Kuwahara Survivor. Gave it to a family with boys when I graduated college, got married, and moved back in 2000. But anyway, please help!

[@ianmacdonald487]

I wish you would actually make these slightly more technical. The inch-gear concept is a means of comparing a chain-drive bicycle to a high wheeler. We don't have many high wheelers any more, but they were the bicycles before chain drive. Chainwheel teeth ÷ rear sprocket teeth × tire diameter= inch gear. 44 ÷ 16 = 2.75 2.75 × 20 = 55 for what we call a 55 inch gear. That means the same as a high wheeler with a 55" diameter wheel. Inch gear × pi = the distance traveled for one revolution of the cranks. Your viewers may not be thinking enough of the numbers, rather than thinking of them too much, as you suggested. The shortcut of saying 1 tooth bigger in the back requires 2 or 3 teeth bigger in the front is not very accurate either. Always do the division and multiplication if you want to be accurate. For example, all the cogs' tooth numbers must be divided into all the chainring tooth numbers to know the actual progression of ratios on a multi-speed bike. Someone riding a multi-speed is only guessing how to shift if he/she doesn't do the math. The old standard 42/52 setup on a road bike will have overlap in the ratios which are available with each chainring. This requires double shifting if one wants to shift from one ratio to the very closest next ratio. By doing the math, one learns where the double shifts are. Obviously, this is much more complicated than a single-speed, but guessing or estimating is nowhere near as accurate as actually calculating the inch-gear ratio of the setup being evaluated. By the way, I own 4 Gary Littlejohn cruisers, 3 of which are the Factory Cruiser or Lowboy model. The 4th one is a Fireroad Cruiser. I just learned what they're selling for, and I am astounded. Damn, it's good to be old and own all this stuff! I just bought a brand new re-issue Tange TRX fork from Pork Chop BMX, on sale for $110, to put on a chrome plated Lowboy which has NEVER BEEN BUILT! I'm going to have a brand new, chrome plated, Gary Littlejohn Factory Cruiser in 2023! How am I doing?

[@Vekurus]

180mm, 45tooth - It was like having a bigblock. Out of my "crew", not even the dude with the 12speed could catch me.

[@charliebbolyard5894]

Hey bro I got the cult 29in and was wondering do they make something so that I could put v brakes on it.. if not I'll just order the odyssey Evo 2.0

[@familyengineering5591]

No

[@whosjohndonut1056]

So I bought a 30t NWO sprocket. This would be ok on my cult 6 cruiser? It comes with a 10t cassette hub. Thanks

[@AlfredoMancuso]

Yes!

[@braylinwright9720]

Front gear divided by rear times wheel size will give the gear ratio

[@ashpunting]

More knowledge from the book of Phu he's always right apart from his goid looks he knows wot he's talking about ✅️ 👌😁

[@ponyboyc]

32/12 was the standard before 25/9

[@AlfredoMancuso]

This is true!

[@karl11]

Phu, that is circumference. The circular measurement of the circle. Diameter is the distance if the two farthest distance of a circle when cut into half.

[@karl11]

#Alfredo mancuso check this respond. It says that you're giving me something. Hehe

[@ericcooper2174]

A lot of people forget to take the wheel into account with the gear ratio….. the wheel size is the most important factor

[@porfiriacalderon4014]

If you have bigger wheels . You can have a bigger crank and more knee room to pedal.

[@lilnickskirt5112]

what would be a similar feel to a 28-9 but with a 33 tooth sprocket , both have 20in wheels?

[@nhickcox02]

33-11 but it will be a little lighter than 28-9

[@crabtrap]

Just think of the wheel size as the final drive gear. So its actualy 3 gears turning that makes your final ratio

[@VailSkateSupply1]

Divide the front teeth (25) by back teeth (9)=27.77777778. Then multiply by the wheel diameter (20)= 55.55555. That’s gear inches. So the bike should roll about 55 inches per crank revolution. But I think the 29ers are geared more like a 28x9 20 inch. 36t\16t=2.25 x29 = 65.25 gear inches or 28t\9t=3.11111 x 20 = 62.2222- gear inches. I’d probably run a 32x16 if I had a 29er because it’s hilly where I live.

[@Tuckerfranciss]

I have a 20" BMX bike and run 30/9

[@VailSkateSupply1]

44x16 baby!

[@VailSkateSupply1]

It’s about the same as 25x9.

[@francismanuel5485]

My 20inch bmx runs a 28t sprocket and 12t freewheel is it same on 25x9 gearing?

[@nf4833]

Your answer is in your question you have 28/12 Which is not the same as 25/9

[@francismanuel5485]

@@nf4833 the pedal pressure is what I meant

[@kimoarmstrong3519]

Why does it seem weird to see Max or Ethan drop a video part one day and then back in the shop again the next?

[@AlfredoMancuso]

Haha I know what you mean

[@zAvAvAz]

i need 6:1 (60/10) ratio before it hits my 20" solid carbon fiber wheel. i am 5' 6.75" tall and 200 lbs lean. i go 60 mph on my early1980's huffy pro thunder. Yup i got the crank for the leverage baby. only problem is , i need stronger material strength and use a single piece crank because i snap chains, strip out parts, and bend pedals everywhere. 🙂 Now it got rusted so need a new frame built. Going carbon aluminum and/or chromoly. i build my own gears because there is too much flex inherent in standard bicycle gears. i have to use a motorcycle chain. i am thinking of converting to a transmission without chain.

[@Junior-fd8ux]

I saw the first 29in bike the other day and was dien to try it so bad cuz I want one… dude said no lol. I was so bummed I offered for him to hold all my shit just a circle to feel it and nothing! lol

[@scottbradford4130]

33 front 9 back will have u cookin. Trust

[@ocboy616]

It's the jorts for me.

[@HoodiiSzn]

Why are wheelies so popular now? After a while it’s just the same thing over and over.

[@familyengineering5591]

Bleks

[@chrisstephenson8311]

Hey real men pedal with flip flops……especially when using bear traps😳👍🏻

[@weareallbeingwatched4602]

You want to be hitting the quickest reps you can push at about 28mph. Depends on your legs, I'm long legged, rather than a "spinner". Do an exercise bike power meter, and find your peak power reps on full sprint, then get out your calculator. That ain't for BMX, that's for a single speed rider, but it's my method.

[@BRED23]

So 28/9 is heavier but goes further off one crank and has a higher top speed than 25/9

[@ghostlaewon]

maybe even 06ish for 25t

[@randycollins2607]

😎

[@jessicaeldridge7287]

That's ball ... my wheelie bike has 25 to 9 ... and its a 26 its much better then standard

[@bammargera5247]

👋

[@jasonmarshall7983]

Wah wah wahhhh

[@fiekieX]

would love to see u go deeper into the speed and acceleration of gear ratios

[@hawaiianpunch6534]

Science

[@JDubKillinKicks]

Basically the engineers are smarter then us.

[@jellis7042]

Whoa, too much information for me. Math was not strong within. Nice Daisy Dukes though

[@BMXBikerDude3]

❤️🧡💛💚💙

[@jasonwolfblood9441]

Perfect ratio is 45-9. Fite me

[@AlfredoMancuso]

Golden ratio!

[@jasonwolfblood9441]

@@AlfredoMancuso gotta go fast

[@FantsyPants]

​@@jasonwolfblood9441 is that for racing or street? Quick launch or high speed?

[@jasonwolfblood9441]

@@FantsyPants high speed, but not allowed

[@familyengineering5591]

Circumference not diameter

[@sinsemilea7290]

what the phu!

[@familyengineering5591]

You built a moosegoose

[@transform9230]

Circumference

[@Terps_N_Trichs]

29" is wack...just say it 😂❤

[@akumastealthily123]

Fixed gear

[@josephcorso5081]

25 -9 and 44-16 are 2.7 to 1 ratio 25 is easier to get moving but 44 gets you a faster top speed

[@xd1be9nb7v]

Adults discovering elementary math 😅

[@chrisparker7815]

Bruh, you got tweakers messaging people as you, I got 2 different ones..

[@mikehagen3785]

Waiting for a fake Alfredo to offer me a free gift so I can report it as spam. Takes a day or so....

[@AlfredoMancuso]

Congratulations you just…

[@mikehagen3785]

@@AlfredoMancuso lol

[@JasonBrown-xm7ky]

It's all math...

[@lucasballinger8177]

It's all basic math . KEEP PEDALING

[@stuwest5862]

This guy doesn't even know the difference from radius and circumference. He made some other mistakes as well. I recommend a script and maybe some research next time.

[@joegaskill8742]

Good job stu. Hahahahah ur stu now

[@badcommentbot8349]

I run 62 gear inches

[@machongtalong1210]

Guys X 1,000...

[@tonysheene6399]

Great video ! Ps .. what you’re wearing are called (flip flops🩴) not sandals 👌😀