Fitting Bmx Cranks on a Fixed Gear

[@drobnbrad]

Specialized made a bike called the Pfix and it used a very similar crank and sprocket setup. I ended up swapping them for a set of odyssey thunderbolts which are a unique 2 piece crank design. To answer your question, yes I’ve ridden BMX cranks on a fixed gear bike and those chromo 48 spline inserts on the sprockets are prone to play over time which is why I switched to bolt drive!

[@jacobatherton8339]

I'm glad you made this comment because I've been considering trying out a 48 spline drive sprocket on one of my fixed gears and have questioned the performance improvements over cheaper 8spine cranks with more available single bolt bmx sprockets.

[@Suckmycog]

@@jacobatherton8339 I would not recommend 8spline cranks on fixed gear

[@henrymaurer4932]

Like the added crankset and overall bike set up!

[@Fdrc-D]

Love this kind of vid where you speak a lot while keeping a nice 'n chill atmosphere!

[@waveywheelies]

That’s nice to hear, thanks for the feedback! Will keep them coming

[@schwinnguy]

Waveywheels on a dark winter morning in AZ, it's a good day. Thanks for the post.

[@waveywheelies]

Cheers @schwinnguy, thanks for tuning in🫡

[@OVRTHNKR.47]

I'm a fan from Philippines since your day 1. I watched your other upload just to wait for your another content. Love all your work 🥰

[@waveywheelies]

That’s so awesome, it really does mean a lot, thank you🥹

[@guyl9208]

Always interesting and cool, but everything is interesting to someone from the Tron. love the Tshirts too, will grab one in the new year. 🎉

[@waveywheelies]

Haha thanks a lot man, really appreciate the support! 🧡

[@Unseengaming66]

Nice video love the background sounds

[@MedicineManBars]

I primarily ride spline drive fixed 🔥 Its such a simple and robust system. I've never successfully taken off and put back on a different crankset so easily

[@waveywheelies]

Nice to hear! They are solid as that’s for sure, already planning a future build with some shorter ones😊

[@jjjtung]

That looks so sick man!

[@stephenbaker4121]

I ran profiles on my track bike back in 2015/16 and the first thing you’ll notice is the rigidity. They’re so damn stiff which being a bigger dude felt amazing. I had the imperial chain ring on them which looked dope to. Nice work on the set up bro, they look amazing on your bike. Definitely try find the 165’s if you can. The toe overlap will be that little bit less but you’ll notice it. Big ups mate.

[@NapalmBikes]

You will toast those BB bearings if you leave them like that. You need about a 0.1-0.2mm preload, but you have a 0.8mm preload with that BB width and crush tube combo. Either slim down the inner crush tube or space out of the BB cups by 0.7mm etc. I've lost so many hours messing around with BB spacers. Long live Shimano hollowtechII and OG BMX cranks

[@schwinnguy]

That's my problem with this bb standard, they are so fiddly to set up. The surface area of the spline engagement on the aluminum chainring seems a bit small too.

[@MrJonas2255]

Yeah, I would track down some Shimano DXR cranks for a build like this!

[@ghosthouse6672]

That looks sick

[@Some_D0nkus]

Profile spline drive is the shizzad. Absolute baller stuff!!! Cheers from New York

[@waveywheelies]

Heck yeah! I bet it’s a bit more common to see over there, compared to down here in New Zealand, we don’t have any suppliers for profile😓

[@nikolaibohachevsky2301]

Dude, that looks so rad! I remember sporting Profile cranks on my PK Ripper back in the day; and I mean back in the day(circa 83)! Back then their fit and finish was second to none. Profile has been around for a long, long time, considering. It’s nice to see that quality still shines through!

[@waveywheelies]

That’s awesome to hear! I love the older stamped profile cranks, a shame they stoped them. Love the quality of profile, definitely a big fan

[@CharlieMetcalf]

AWESOME! Thanks for this, I have always wanted to do this myself, and was not sure how they worked.

[@waveywheelies]

No worries, glad it was useful! Fairly simply to set up if you have the right tools👌

[@dannystarkridesfixed]

Looking good I enjoy bmx cranks on a fixed. Don’t have a preference but have a few with both bmx and not.

[@waveywheelies]

Good to hear! I might have to try find some shorter ones for a future build

[@TjorvenGeschwindigkeit]

As always such a Nice Build! Actually nice to see how that works :) Greetings from Berlin Germany :)

[@waveywheelies]

Cheers! Glad you enjoyed :)

[@Chogie14]

Love it. Any excuse to tinker away and try something new 👏🏼👏🏼👏🏼

[@waveywheelies]

Exactly, that’s what I love most about bikes🧡

[@edwardpante2434]

I really love how it looks🤘

[@waveywheelies]

🧡🧡

[@jamiepalmernz]

Awesome build fella!

[@waveywheelies]

Cheers man! It’s such a fun and playful bike

[@BmxGuyFromNZ]

My favourite part was when you took off the omnium cranks.. and put the profile cranks, bb, an sproket on like a top dog.

[@waveywheelies]

🫡

[@parikesitw3566]

Hi man, been a fan of your work, I've run a BMX Profile setup on my All City Def Wish for quite some time just to commute without the stress of FGFS and it definitely develops a play in the long run. Ideally, it should run on a track 144 crank setup but the frame wouldn't allow it. I'm running a 33-9 T gear ratio at the time. I believe the main leverage this Reyes frame had compared to an old-school FGFS frame like my Def Wish is its capability to run that track 144 with a big chainring setup for reliability. Sick build as always though.

[@jacobsantos8477]

Splined cranks are mandatory on a fixed gear freestyle 😁

[@shaori1469]

When watching you before i can't even pop a wheelie, now i can wheelie one hand

[@waveywheelies]

That’s awesome to hear! I’ve been trying to learn one handed wheelies for a while now😅

[@shaori1469]

@@waveywheelies goodluck i hope you got it soon.

[@vithilenka2166]

had profiles in 155mm on my trasher build....same sprocket you have here...sweet setup...the only thing that bothered me is the much wider stance(q factor)....never had an accident because of it tho, fhats was probably thanks to the very short cranks I had

[@waveywheelies]

Oh man that’s good to hear! Would of loved to find some shorter ones, going to keep my eye out for some around that 160 mark. Yeah the q factor is definitely something to get used too, luckily this mash frame had quite a high bb

[@BmxGuyFromNZ]

I usually install those profile sprockets with the little profile logo hidden behind the crank arm, kind of like how on mountain bikes they have that little extra bit on the sprocket behind the crank arm to stop the chain getting caught there if it was ever to come off. (No idea if that's actually why profile do it like that tho)

[@defeatedgoliath]

Early! Greetings from PH

[@waveywheelies]

Thanks for tuning in!🫡

[@makaptaka]

In my experience, the larger the chainring in the spline system with an insert, the faster the play occurs. I once had a 36t chainring and after 6 months, the play increased, which meant that after another 2-3 months the chainring was a piece of junk. I recommend full cromo spline - it reduces the problem of play and pointless frustration :D By the way, I wonder how you fit a 47c tire in this frame? The manufacturer states that a 43c will fit max. It's probably a matter of the inner rim width. I have such a frame and I have to check it :)

[@waveywheelies]

Thanks for the info, that’s what I was worried about, I’ll see how I go with this set up. Would love to try out a full cromo one that’s bigger than 40t. The 47 just fits on the rear, it is quite tight. From experience you can always go a bit bigger than manufacturers state, depending on tyre and tread size. Could also squeeze bigger on the front

[@BmxGuyFromNZ]

....sick..

[@littleelvis9410]

How round is that chainring? Are you able to get even chain tension?

[@waveywheelies]

Yep it was sweet, tension was good :)

[@carlosmiguely.miciano8968]

Any tips on how install a cog and lock ring?

[@waveywheelies]

Use grease, make sure your lockring threads match the hub threads (there’s two different common standards that a lot of people get caught out on) and make sure the cog is nice and tight before you tighten down the lockring (if your cog isn’t fully tight, it can tighten down more when you ride it which will cause the lockring to loosen and/or strip) Hope that helps a bit, dm me on Instagram if you need more help

[@TheBigSania]

what is the chainring that was on omniums?

[@waveywheelies]

Aarn 43t 😊

[@SimonHBS]

Besides the looks, I’m wondering a little bit what the point is of installing BMX cranks? They look to be of an inferior design mechanically speaking. Yes, there are more bearings, but these 48 splines have got to develop play, the chainring is carrying a bigger load because it's not supported by a spider (all the force goes to the small splines). It's also more tedious to install, and it gives a wider Q factor, giving a higher risk of pedal strikes and moves the tread force away from the center, meaning you have to tilt the bike more when out of the saddle and pedal harder than you would have to with track or road cranks. I get that the fixed gear community is often not about what makes sense, but more about rebellion, also looks wise. But still.

[@waveywheelies]

Just depends on what style of riding you like doing, there’s always different pros and cons for different parts. because this build was focused closer to fgfs I decided to test them out. Fgfs riders use bmx cranks and have done for a long time. The Q factor is definitely something to think about, would have been ideal to get these cranks around that 160 mark, but unfortunately couldn’t find any. The one thing I love the most about bikes is the customisation, ability to use different parts and to make stuff work how you want, and then ride them of course🥹

[@BIGJ0E]

Why not run a 1/8th sprocket?

[@waveywheelies]

Unfortunately couldn’t find one in that size that was 1/8th, I think these are designed for bmx racing so all are 3/32” but I could be wrong

[@M.rayhanAlfaathir16]

can u do barspine

[@waveywheelies]

Yeah kinda haha, just wheelie barspins though, not hop bars.. yet..

[@louieheron3525]

[@NapalmBikes]

That's not how you measure & space cranks out. Obviously you measure from the pedal flats-to the-centreline of the seat tube. Assuming your chain stays are symmetrical is asinine.

[@TecraTube]

it's no longer fixed gear

[@ayyansea2138]

as far as I can see, there's only one gear and still no coasting capabilities, which makes it fixed gear. what are you on about?

[@MedicineManBars]

You must be blind