Cool, didnt know such adaptors existed. The Ashtabula cranks were really heavy, one could save a lot of weight going to a 3 piece crank. That being said, the Ashtabula crank was genius in that it could be serviced with no special tools, just a crescent wrench which everyone has. Although ironically probably 90+% of the bikes ever sold with such cranks were never serviced in their lifetime and served their whole time with the grease and adjustment that they left the factory with :)
In fairness, the cranks still spun really well, so I actually could have left them be but I preferred to bring them a little more up to date. As you say, it saves a lot of weight too. Thanks for watching and commenting. 👌🏻
How did you determine the width of the shaft? Nobody ever mentions this or talks about this. It's important especially if you plan to keep the same number of chain rings in the front.
That’s a good question, Luigi and I imagine the reason no one talks about it is because there are a few variables that go in to it. The first thing is whether it’s a JIS (Japanese Industry Standard) or ISO (international Standardisation Organisation) which are mainly European made. The difference between those two is the angle of the shaft ends where the crank attaches. One tapers much more than the other and so your crank may sit closer to or further from the BB dependant on the type. Secondly is the size of shaft that your specific cranks need and this is the hardest part, as crank manufacturers rarely (in my experience) list what size shaft is needed for their products. As such, it’s all largely trial and error frustratingly! I hope that gives you a little knowledge to do a little bit of Googling, to get closer to what you need when you’re looking for a new crankset. 👌🏻
@@petertreadway Yeah I know. All's I know is that I'm in America so other than that your guess is as good as mine if not better. I don't want to spend my life on Google. Lol I'm actually trying to get away from computers as much as I can.
In terms of the length, it would still depend on the BB shell width, as the adaptor works for both 68mm and 73mm. For diameter, it's the standard BSA square taper cartridge size of 34.5mm or 1.37". If you're asking about spindle length though, then then would be dictated by the crank you're using and THAT is a whole different kettle of fish, which has too many variables to suggest without knowing the specifics.
Yep, they’re definitely a dying breed but good to know they can be updated when you do come across one. I used to have a Grifter too though. Couldn’t quite afford a Chopper but I loved that Grifter. 👌🏻
Cheers Pat, really glad you found the video useful. You’re right about the lighting too. This was my first ‘studio’ video and so didn’t have the lighting settings properly dialled in, so have since tried to change it up a bit. Really appreciate you taking the time to watch and comment. 👌🏻🌟
Something no videos have addressed. Are all American bottom brackets the same size? ie my old Huffy mountain bike is the same size as any other US made bike?
I don’t think they are. At least not newer ones. I don’t know much about BMX/US BB standards but I have heard the terms ‘old school’, ‘mid school’ and ‘new school’ when referring to them, so I would assume that there are differences between them.
Cool, didnt know such adaptors existed. The Ashtabula cranks were really heavy, one could save a lot of weight going to a 3 piece crank.
That being said, the Ashtabula crank was genius in that it could be serviced with no special tools, just a crescent wrench which everyone has. Although ironically probably 90+% of the bikes ever sold with such cranks were never serviced in their lifetime and served their whole time with the grease and adjustment that they left the factory with :)
In fairness, the cranks still spun really well, so I actually could have left them be but I preferred to bring them a little more up to date.
As you say, it saves a lot of weight too.
Thanks for watching and commenting. 👌🏻
You are a great teacher. Very clear and concise. 10/10
Thanks so much. Glad you enjoyed it. 👌🏻🌟
Great vid, Macguyver!
😂. Cheers mate. I try my best. 😉
How did you determine the width of the shaft? Nobody ever mentions this or talks about this. It's important especially if you plan to keep the same number of chain rings in the front.
That’s a good question, Luigi and I imagine the reason no one talks about it is because there are a few variables that go in to it.
The first thing is whether it’s a JIS (Japanese Industry Standard) or ISO (international Standardisation Organisation) which are mainly European made. The difference between those two is the angle of the shaft ends where the crank attaches. One tapers much more than the other and so your crank may sit closer to or further from the BB dependant on the type.
Secondly is the size of shaft that your specific cranks need and this is the hardest part, as crank manufacturers rarely (in my experience) list what size shaft is needed for their products.
As such, it’s all largely trial and error frustratingly!
I hope that gives you a little knowledge to do a little bit of Googling, to get closer to what you need when you’re looking for a new crankset. 👌🏻
@@petertreadway Yeah I know. All's I know is that I'm in America so other than that your guess is as good as mine if not better. I don't want to spend my life on Google. Lol I'm actually trying to get away from computers as much as I can.
@@petertreadway Maybe if you and they mentioned what you went with and why it would help other people instead of leaving it out.
@@petertreadwaywow bro above and beyond!! Great informative reply. Thanks for the upload 🫡
Hi. Thanks for detailed explanation! 😊What size of BSA fitts for the adapter (long and diameter)? 68mm to ???
In terms of the length, it would still depend on the BB shell width, as the adaptor works for both 68mm and 73mm.
For diameter, it's the standard BSA square taper cartridge size of 34.5mm or 1.37".
If you're asking about spindle length though, then then would be dictated by the crank you're using and THAT is a whole different kettle of fish, which has too many variables to suggest without knowing the specifics.
thank you so much
You're welcome. 💪
Is it possible to get links to the parts you used? I can't find them locally.
Hey, good point well made, I've now added the links to the BB adaptor and BB itself to the video description.
i almost threw away my fixie frame bcs of this problem, have a blessed day 🙏🙏🙏
So glad you found it useful and didn't needlessly throw your frame away! Good luck with the rest of your build. 👌
Great video Peter. It’s been a few years since I’ve seen a one piece crank, I think it was on an old Raleigh Grifter! 👍
Yep, they’re definitely a dying breed but good to know they can be updated when you do come across one.
I used to have a Grifter too though. Couldn’t quite afford a Chopper but I loved that Grifter. 👌🏻
Terrific and informative video! Slight criticism; you need better lighting. It appeared as though you were working in the dark.
Cheers Pat, really glad you found the video useful. You’re right about the lighting too.
This was my first ‘studio’ video and so didn’t have the lighting settings properly dialled in, so have since tried to change it up a bit.
Really appreciate you taking the time to watch and comment. 👌🏻🌟
I will be doing this conversation on my 1972 Schwinn Super Sport. I can’t believe it is this easy.
@@patreilly4293 I honestly thought there’d be more to it but nope, take the one piece out, fit the adaptor and screw your BB in. Simple!
Something no videos have addressed. Are all American bottom brackets the same size? ie my old Huffy mountain bike is the same size as any other US made bike?
I don’t think they are. At least not newer ones. I don’t know much about BMX/US BB standards but I have heard the terms ‘old school’, ‘mid school’ and ‘new school’ when referring to them, so I would assume that there are differences between them.
£16🫖 or about $60🦘😭
Wow! Is that how much they are in Oz?!? Sorry dude!
@@petertreadway Everything is more pricey, not to mention slow and expensive to ship 😒
Cheers. . Didn't know about the conversion. . I was going to buy my son a new bike. . .now. .. we have a project. . Thank you