Double Drivetrain Fixed Gear - 2x Freewheels 

🤔

60 more double espressos please.

Ok

mtb if using doltrap can it???

Why are we even here? Extra weight and cost together with reduced reliability. What a winner.

That's something that only people who get high think. It's nonsense. I've never used drugs of any kind, never been high, but I have ideas like this all the time. In fact, that's one of the reasons I figure it's better for me not to do drugs.

@@whateverbikes Its a Joke

@@whateverbikes Is there any way you might chill a bit? No one is getting hurt as far as I can tell. Good day

@@wf2197 What makes you think I am not chill? I just don't agree with what he said.

@@rideordie8268 Oh. Haha.

I knew there was at least one advantage! Thanks haha

You'll look like a kangaroo bro 😂

with enough grip it shouldwork even standing

I saw a guy at a halloween ride do that. He was dressed as a kangaroo so it looked like he was jumping. He had to keep pedaling backwards then forwards because he couldnt get enough strength to do a full rotation, and this was on a lower speed social ride. It worked, but dude looked miserable lol

@@jpstranger5584 That's some extremely creative concept for a halloween costume not gonna lie

@@jpstranger5584 Imagine doing this on a fixed gear with a small gear ratio 😂

As an ambidextrous person, I agree :)

@@Eduardo_Espinoza i love symmetry

I'm also OCD :) @@putra6106

Redundant except if the RH drive breaks you have to cycle in reverse

see what you did there

@blankroomsoup That's where the 2nd chuckle kicks in 🙂

@@blankroomsoup666 I feel like this would honestly be pretty nice if you just made proper parts so one side isn't in reverse, just having a backup chain is totally appealing to me.

Effectively yep!

Oh that sounds cool! I think I’ve heard of that before, I’ll check out your video! Sounds like something I should try out

Nah, in order to tension the chain correctly they need to be the same length

@@jonasmeiner5007 the chain doesn't need to be perfectly tight, you can get it about right with a little luck by taking links out of the chain, and trying different combos of gears. A little slack in the chain is common on fixed gears and single speeds. It would likely mean one freewheel is always racheting, which would be a little fun.

@@koos42 chain tensioners could work too maybe getting the left freewheels tension correct then using a tensioner on the right to take up the slack

i really wanna see this too!

Why do some BMXs have that? Is it for left dominant people?

@@Eduardo_Espinozato my knowledge, it is about which foot is dominant, but not for power transfer. It's for whichever side they're more comfortable doing grinds on so they're not destroying their drivetrain if they miss the pegs

@@deeranfoxworthy6069 I see now, thanks! :)

Before worrying about helicoil, just re-thread with left-hand tap and see what you get. Chances are better than not that you'll have enough threads for secure pedal torque. A framebuilder friend did this multiple times to make left-hand tandem cranks with no issues whatsoever.

@@dudeonbike800 wtf lol do not run a left tap though an already tapped hole... yes the pedal will thread in... no it will not stay in...

That is correct...main thing to figure out would be chain tension. You'll have to fine gear ratios that have the same chain tension or very close cause different gear ratios will have different axle to bb distance.

@DaBinChe I wonder if a math formula could be made to find the distance between the center of the 2 cog/chainring. 🤔 Maybe we can generalize that similar ones are slack & vise versa

I did briefly think of this but wasn’t sure it would work, my thoughts were that if the LH ratio was lower the LH free wheel would want to rotate faster foward than the RH side, causing some kind of issue, so I’m not sure the chain tensions would work. Maybe I should try it out and see

@@waveywheelies well we're all thinking it now haha, maybe a part 2 video idea?

I did briefly think of different ratios, but my thoughts were that it might not work. If the LH side was a lower ratio (easier gear) the LH side would want to drive the cranks faster foward that the right side potentially causing some issue or weird chain tensions. Not 100% sure but would have to try it out and see!

Getting chain length and tension might be tricky but in theory a chain tensioner on the RHS, or even wilder the top of the LHS might work?! Please do this!

@@waveywheelies since either side is always freewheeling you shouldn't have any problems running different gear ratios, as long as you sort the chain tension. A tiny chainring and massive freewheel on the left would translate to high leverage on the wheel for very low effort, easy on the knees braking.

​@@VyantQuijt Right 52-16 Left 52-24 are they going to work ?

@@samsonsclan7439 I wouldn't know, man. I was thinking more along the lines of a 1:1 ratio on the left for the braking. Only concern for chain tension is that the sprocket centre distance for either of your selected ratios is near enough the same, so you don't end up with one overly tight or slack chain. I'm sure there's some calculators for that online

Cheers mate! It definitely looks a little funkie but was fun to try out! Thanks for the support🙏

When pedaling forward, only one Freewheel will be engaged. when pedaling backwards, only the other Freewheel will be engaged. as long as you don't ride forward and backward for an equal amount of time, you won't have this advantage. it looks cool though.

What a load of bollocks

Is it shite

@@levrider9558 Sometimes the cool factor is all that matters... especially with fixies.

@RollinRat woah, that's insane, I've always thought people back then came up with this stuff, because they were bored af.

@caluzzucarrazzi5549 haha no worries!

Fixies are all about style, bruh. And Alleycats, lol.

too ??? It´s the one and only advantage !!!

@@klausbrinck2137 by “too” it means accomplishes something other than his initial goal of seeing if it works. Slow down dude… comprehension is important.

@@tbz1551 I understand u, but I insist: Utterly useless, so useless that it´s almost evil, and its only use is to save time for the "drive-side -photos" ;-) ;-) ;-) Would u get deliberately run over by a truck, just to see what happens? No? Then, u also don´t build that abortion, since u already must know what happens. I thought he has some new, never-thought-of-before application for such an, otherwise, abortion, and instead, at the end, I wanted to plug out my eyes... I shouldn´t even be disappointed, cause I clearly should have been smarter...

left side drive is a common bmx thing.

I guess it would block itself or snap a chain. Reversing wheel itself engage any freewheel. Lets say forward ratio is 2:1 and reverse is 1:1 ratio. Going forward is then impossible. While at reverse crank chain ring make 1 rotation, freewheel make 1 rotations, wheel itself make 1 rotation AND reversed forward freewheel makes 2 rotations(it wont engage because wheel is slower than it). And when we try to pedal forward. Chain ring try to make 1 rotation, freewheel tries to make 2 rotations and wheel itself is trying to do 2 rotations AND THEY CANT because they are stopped by slow freewheel that is doing only 1 rotation just like the chain ring itself. Its going to get stuck on itself because wheel cant go faster than reversing low gear ratio. Oh what a BRAIN EXERCISE!

Если бы было 2 fix звезды, то нагрузка распределялась на них равномерно. А так,я тоже не понял, кроме симметрии

it isnt lol its just a more complex fixie for the novelty

Yep exactly haha!

wut

Definatly no extra mech advantage, on every bike both feed impact the drive train no matter on wich side(s) they are... Or do you have ever seen a freewheel that only sets free one of the crank arms?

That's a cool question, but i think there would be extra friction, i think track ppl would benefit from this tho 🙂

Literally double the drive train resistance and nothing else what are you on about bruv

a bicycle chain drive is something like 95-98% efficient meaning tere is 2-5% loss of energy in the system. the more chains and sprockets you add the more energy is lost. although in this case the 2nd chain is freewheeling so its not actually doing much

Mind blowing

Nah you can’t coast with this set up

I think I see what you did there 🧠

Cheers mate!

I was worried about something like that happening, thanks for the info!

since there are two chains, the forces the chains see are distributed among two chains so in theory, it will take 2x longer before you need to replace the chain.

There aren't any really, he just did it for fun to see if it was possible.

I've thought of a small advantage is that you can use the unidirectional halflink chains on both sides which means that you can use a smaller rear sprocket(s). This can give you a higher gear ratio when you are limited in front cog size or able to use a smaller front cog for the same gear ratio.

Yep!

Could possibly be easier on the legs using a lower reverse gear making braking easier

Interesting you could totally do that!

@@carlwilliams6312 Yeah but at high speed, would you not suddenly get hit with an even higher cadence when braking? Could be uncomfortable

That’s an interesting one, I would of thought a lower gear on the LH side would cause the pedals to want to move faster foward than the actual speed you are pedalling foward, causing it to jam up or something? Maybe I should test it out and see..

I think this is where trial and error with different gear ratios would play a big part , none the less it's still a interesting concept , braking on one chain and drive on the other

I wonder if this could be me made lighter, for a certain application. 🤔