For more bike repair videos hit the subscribe button 🛑 and click the notification bell ► bit.ly/SubRJTheBikeGuy

I cannot believe that your channel exists with EVERY single video I've needed for building a bike!

Much respect to a man who changes out a bottom bracket in his Homer Simpson slippers. Absolutely here for this! Thank you!

I'm an old man and ride a 1979 Schwinn Collegiate. Loved this video and will be converting to a 3 piece crank. Thanks RJ.

Rj u are the light for us, you show us so many thing that isnt shown anywhere else on youtube! please continue your content, it is a great service for the fast-rising biking community!

RJ you are The Man! One of my uncles gave me his old Schwinn Traveler to rebuild and upgrade, your videos are a big help they cut down on trial and error part of working on older bikes, thanks for what you do!

I just did this project and was able to convert a one-piece to a hollowtech II road crank for my Dad's rat rod! I used a headset press for the drive side cup; a drift fit the inner portion. I also smeared a little bit of grease on each cup prior to install. Unfortunately, I was without Homer slippers. So, the overall job took a hit!

Hey RJ, thanks for this video. I am about to upgrade my old botton bracket to a more modern one like you did on this video. You job is very informative! I have a vintage bike from 90's with a press fit just like this and I was wandering how to do the task. This video helped me a lot! Thanks!.

Thanks for the video, I am upgrading an old Schwinn and really needed to know how this process works. Also, those slippers are great!

Man, I have to say. Whenever I don‘t know something regarding my bike, I watch your videos. It‘s amazing, your videos are very helpful.

EVERY time I need tips on a tricky bike issue, there he is. My man RJ. Thanks again for the great videos!

Outstanding!! Now I know what to do!! I'm only 70 yrs young...putting it together for my granddaughter...you ARE THE MISSING LINK!!

I did this to my schwinn del mar mens cruiser (Walmart) couple years ago and it's working great still ! Thank you for the memories RJ. Bill M.

I did one of these, but I used a YST US bottom bracket, which basically used the same size cups, but used a square taper axle and these huge cartridge bearings. Runs smooth as butter.

awesome video! I've been trying to figure out how to put a more modern set of cranks on an old cruiser frame I love. Thanks for sharing!

I'll be getting to use a couple adapters to do this next week. Got a new just out of the box beach cruiser today that had something wrong with the crank set from the place I'm assembling bikes at. They didn't want to mess with it, so free is the word of the day for me.

Pretty good video RJ . I always appreciate it when a how to do it U Tube is not overly long , just to entertain us. When the new shell cups are too long to allow seating up against the frame shell , another viable way to make them fit is to put the new BB threaded bushings in a lathe and face off the required amount to clear the "ridge in the frame shell' . a local small machine shop or networking friend with a lathe in his garage is not too hard to locate. this eliminates the hand grinding on both the frame and the bushing chamfers. OR , a person could also just use spacers , rather than grind or face off in the lathe. The actual " Q factor" or width of the outside dimension on the assembled new parts is not a big deal for most people.

Cool slippers. :) Much less scary than the old ones I think. I'll watch the rest now...

Great video, thanks. I am in the process of adapting a Huffy mtb, I was relieved to see it didn't have a ridge, then I saw that the chainstay tube ends come through and are too close to the outer edge! So i've now got a lot of filing to do, not having any grinding power tools. Truvativ seriously need to modify the design of these adapters!!!

Thanks R.J. I needed this so i can change to 3 piece cranks on my bmx

Years ago the single piece crank arm of my 1971 Crescent VM Racer broke, thanks to my giant quads 😂. It's a beautiful bike, all original, but sitting in disrepair for nearly 20 years, and 20 years more before it came into my possession. This video has given me a glimmer of hope to someday repair and bring the old goat into the next millennium. So, thank you. However, there's a twist so I'm posting here for others: while it had the Ashtabula single piece crank arm, the bottom bracket was French threaded, not press-in. In this case the fix is to get a French threaded bottom bracket (or Italian, or whatever yours happens to be, as this is the period when manufacturers started switching to three-piece cranks but things hadn't fully standardized). Make sure you get the spindle length needed for your drivetrain. This is a bit more complicated because you won't be able to reference the crank arm offset, since the original was a one-piece. So you'll need to have a set of crank arms and figure out (guess! If you have a spare square spindle BB, this is a lot easier) how much of the spindle they'll engage, and then account for however many chain rings (and spacers, if needed). And again, you'll need a different set of chain rings because the old ones won't work. With the crank arms and chainrings sorted, measure for spindle length, and this should also dial in the chain line. It's complicated. But at least now there's a path forward where before there wasn't.

Wow ! Tremendous video ! Thank you so much! Best wishes from Guatemala ! 🤙🤙🤙

I love your repair videos, R.J. Thanks so much.

Awsome , exactly what I needed ! Thanks a bunch . Cheers from downunder 😃

I had same problem with my vintage german bike, bottom bracket cups were pressed too. I couldn't find solution myself, so I brought my bike to my local shop and they installed some kind of bracket with pressed cups. Obviously your solution is better, 'cause you can unscrew the bottom bracket whenever you want and I need to unpress the cups.

great video I never knew u could get an adapter for these cranks pretty cool 😉

Thanks so much for the help! I bought a beautiful 3 piece crank and sprocket but unbeknownst to me the inner diameter of the BB is far larger than the included threaded and sealed bearings so I ended up purchasing a conversion axle which is the same setup as a one piece crank but has a straight axle pressed in and ran through so you can attach and square hole crank arms. I prefer your mother although $30 more it allows you to use a variety more of cranks and better quality!

really awesome, man. super helpful and the only video I've found with this job

Thanks a lot. Ive been looking for this piece for ages. Thanks a lot.

Thanks for making bike vids with detailed parts and instructions!!! Your awesome

love the homer slippers, thanks for the info on this upgrade

I’m only 0:54 into the video, but I had to stop and give you a thanks already. I’ve been wanting to do this exact thing.

Cool vid, now I know I can upgrade my old cruiser, thnx. If you put the adapter rings in the freezer for an hour, they might just slip right in a bit easier.

thank you SO MUCH I KNEW IT WAS POSSIBLE ALL THE STORES I WENT TO NEVER EVEN MENTIONED THE POSSIBILITY OF ADAPTERS

This channel along with the channel by cjhoyle - are the best bicycle repair channels on youtube.

Thanks a bunch!!! I so happy to know how update my old-fashioned bike )

Fantastic. I’m learning so much from your videos.

This video made my bike restoration project much easier - thank you!

Thanks for the informational video, really appreciate your work. Thanks

Yo RJ..I look up every tool and part you use in this crank conversion..I'm doing the old Ross ...very helpful chronology but but spindle measurements might be guess work...Thank you!

LOVE YOUR HOMER J PIMPSON WORK BOOTS 👍🏾👍🏾👍🏾👍🏾

its cool how bicycles are so modular!

thank u for the info friend. i have a old huffy single speed bike that im converting to 3 speed & this is a perfect upgrade for me. seeya later

Brilliant! I never knew. Thanks for another great video.

Good video! I learned something new. :) Over here in Britain I have only ever seen Apollo branded mountain bikes use the one piece crank set, well and older BMX bikes. I personally prefer to use sealed cartridge BB's as I find they last longer than ordinary caged bearings.

I like 1 piece cranks. Easy quick maintenance. Long life, after all they did last 20+ years on this bike. New cups and bearings are less than $15. The only reason I would change to 3 piece is if the chainrings were worn or damaged. Sealed cartridge bearings don't last very long, then you can't easily rebuild. I have 1 piece cranks on two bikes. 1 is 30 years old, the other was built this year. Totally satisfied with both.

Those old Schwinn frames actually give a nice ride.

thank you so much i was looking if adapters worked for HOURS

Great video. love your homer sipmson slippers. I had the same pair

Thanks a lot. Just what I needed to know. great video.

Superb how-to. 👍 I'm going to see if I can mod my brother's Sun trike for a 3-piece setup. Dunno if the cupped parts are removeable.

nice conversion I will do this one of my 50‘s frame cruiser

Brilliant resurrection. Thank you for posting. Cheers!

Ashtabula did make those one piece cranks for Schwinn, and they were excellent, Very strong. I used them in BMX way back when, However, while Ross and Huffy did use one piece cranks (lower end models on Ross, most for Huffy) the Ross cranks were made by Wald. OK for their intended purpose, but not as good as the "Schwinn Approved" Ashtabulas. Schwinn cranks had a proprietary thread (28 tpi vs. standard 24 tpi IIRC). Huffy used some other brand that had a weird curve to them, and were a lot thinner and weaker. Removal and installation remained the same.

R.J. & his Super Steel toe capped Simpson Slippers. :)

That’s awesome! There is hope after all. Thanks!

Another great video, I came across as I need to switch my friend`s Huffy to BSA. I want to add, that you have to keep in view, what type of a crankset you remove, and the dropout space as well , to stay with a true chainline. For example, you have to kep it in mind, if you re about to switch 3х6 drivetrain to a single speed, which is common solution for that old type bikes. Thank you RJ!

Love the homer slippers

Great! Thank you RJ.

Thankxz for this video. My old swhinn need convertion.

Great video RJ

love this, very informative.

I was unsure of how to set the new BB adapter in the frame, wood block is absolutely the easiest solution

Hey RJ, love the videos. I would just add that the BB tapers should not be greased but should be very clean when installing crankarms. The crankarm bolts should be greased-threads and under bolt head. Also I use metal cups for non-drive side so I can tighen them down properly. Plastic cups are a pain, they break all the time, then you have to cut them out.

Pro tip, spacers on the non drive side of an internal bottom bracket are a major no go. Better to use an etype bottom bracket that has the added thread on the drive side to achieve your 3mm there. The non drive side cup is tapered on the inside to alow for some small variation in shell width by spacing that cup out you may not be able to properly stabilize the non drive side of the bottom bracket. If using external bearing bottom spacers can be use on either side but overall width on external bearing setups is much more critical for bearing preload

Great video, but let me be the first to compliment you on your footwear!

Great video! Love the Homer Simpson slippers by the way.

Love the slippers!!!

Great slippers, man! Very stylish :)))

Thank you body, you videos help me too much I appreciated

I haven’t bought a chain set yet I have an Ashtabula and the back wheel is Shimano nexus 3 with a coaster brake. The bottom bracket is probably 68mm but I have bad eyesight and only a tape to measure it by, I just want to make sure the chainwheel is going to be inline with my back end

This is awesome. Thank you so much. I have the same bike! Any advice to convert it to a single speed?

Came here for the old school tech. Stayed for the Homer Simpson house slippers.

good video, thanks for educating!

SO helpful and useful - thank you.

Great video !

tnx for making this video 😊

This is a great video thank you.

Buddy from Colombia has cool bikes but wants to convert his old schwinn 10 speed and found this video in a second because Im subscribed. Thanks so much. Any advice on getting a good chainline for wanting that ten speed to be a single speed?

Nice work

Thanks... im building a 83 schwinn predator and im changing the bottom bracket with a conversion 3 piece bracket thanks.

I like this video but prefer the one piece cranksets. I've been able to find a lot of chainring sizes from 25T to 50T. The simple one piece can be rebuild quickly with common tools.

Great. Thank you for this Video!

Great video RJ , my regards to Homer

thanks for the video!

i love this video RJ. it helped more than any other video. can i install an external bearing bb with this adapter?

Thanks again RJ

Great Thanks Bobby

Thank´s for this vid, subscribed :)

Excellent very helpful.

I had no idea that this could be done. Seems like they make a conversion kit or an adaptor for whatever situation you have.

Dura-Ace ready ! Spruce that old frame right up !

Thanks for posting. A really useful video. Can I ask how you calculated the required spindle length of your new BB?

very useful just incase i got to rebore bottom crank after manufacturers cross freading i will see how the bike go with it cross freading cheers

Hi thanks for the video! Very helpful! Where did you buy the conversion cup?

It seems like the adapter manufacturer could also supply a few mm worth of shims to accommodate bottom bracket tubes of different lengths. I've seen thin shims for automotive rear-wheel alaignment, so the technology does exist.

Have you ever tried to convert from a chain drive to a gates carbon belt drive and if so I have a retro style cruiser that I'm trying to convert if you have any information on are or curious on how to do it and can do there a video for it would be great

Nice video.

Super Cool conversion ! I have not seen that one, RJ, have you ever put a triple on the front of a Varsity/continental/Super Sport for better hill climbing capability ?

Great video thanks. I have a 1971 Schwinn