RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: MSMXII on March 16, 2011, 06:20 AM
-
who's running a set of OS Shimano DX's with a sealed bottom bracket? I'm going to be running a set on my new build and want to convert the looseball and cone they came with to a setup that uses sealed cartridge bearings. American BB or eur coversion, It doesn't matter to me, as long as I can use the stock DX spindle.
Any help/info would be greatl appreciated...thx guys ;)
-
they all came with loose ball as far as i'm aware, and due to the unique axle i dont think they have ever been made.....
-
they all came with loose ball as far as i'm aware, and due to the unique axle i dont think they have ever been made.....
Exactly what Sam said above I'dve thought :-\
The Sugino CV BB ( same as HLT cranks) are a threaded axle sealed bearing BB O/S set ,, but do not have the all important splined edge to carry the spider for a DX crank set up :-\
As they say round here
" I think tha's puncin' up brew "
or you're gonna really really struggle :-\
Why is it so important for them to be sealedbb any anyway
If the BB is fitted and greased correctly it would be fine ??? :)
,,if you're thinking about using in competition (racing)half seriously ,, sell the DX and get Redline 401's with the Techmatic sealed BB ::) :4_17_5:
-
I suppose you could modify/ruin the axle by machining the threads of to a certain diameter to install cups with sealed bearigs cartridges , but that would be :-X :police:
So not impossible :)
-
One option could be to use the standard bottom bracket, well greased, and use the outer plastic guards from a modern semi-sealed bottom bracket kit eg:
http://www.ukbikestore.co.uk/product/163/bb4jsa/4-jeri-smart-arse-bmx-bottom-bracket.html (http://www.ukbikestore.co.uk/product/163/bb4jsa/4-jeri-smart-arse-bmx-bottom-bracket.html)
-
Would this be any use?:
http://www.radbmx.co.uk/forum/index.php'topic=113466.0
-
they all came with loose ball as far as i'm aware, and due to the unique axle i dont think they have ever been made.....
Correct you are sir ;) They all came from the factory with a sealed mechanism cone and loosebal, but I'm looking to upgrade due to the fact that I live on the ocean and looseball systems take a beating quick.
I don't want the hassle and maintenence the looseball and cage bearing offers you, plus I like to ride and usually end up beating the looseball setups to pieces rather quickly.
-
Would this be any use?:
http://www.radbmx.co.uk/forum/index.php'topic=113466.0
Thanks for chiming in, I see you really dug deep and found this post as well ;) This is how I found the site... I was browsing the net and ran across this very same post.
This is exactly what I'm wanting to do since I'm sure it MUST use sealed bearings of some sort. I did contact the memebr that owns that P.K. and all he was able to tell me was that the BB was a Kajita branded unit.
It seems that whatever BB it is it allowed use of the original spindle :) Now if I could only figure out what model # it is and where to source one, I would be set :) PLEASE HELP!!...Mr P.K. Ripper man ;D
-
I don't know .. but good to see you over on rad marc :daumenhoch:
-
they all came with loose ball as far as i'm aware, and due to the unique axle i dont think they have ever been made.....
Exactly what Sam said above I'dve thought :-\
The Sugino CV BB ( same as HLT cranks) are a threaded axle sealed bearing BB O/S set ,, but do not have the all important splined edge to carry the spider for a DX crank set up :-\
As they say round here
" I think tha's puncin' up brew "
or you're gonna really really struggle :-\
Why is it so important for them to be sealedbb any anyway
If the BB is fitted and greased correctly it would be fine ??? :)
,,if you're thinking about using in competition (racing)half seriously ,, sell the DX and get Redline 401's with the Techmatic sealed BB ::) :4_17_5:
8) this I'll have to check into. Maybe it will allow the use of the stock DX spindle? Depending on if it's 24 or 28tpi and if it accepts a 5/8" axle. If so then it's a possibility ;)
Thanks for the help/idea, much appreciated,
Marc
-
I don't know .. but good to see you over on rad marc :daumenhoch:
I don't know either :LolLolLolLol:
-
I don't know .. but good to see you over on rad marc :daumenhoch:
Right on my friend for the welcome...very 8) :) I usually spend all my time over at the Museum and live under the same name. I found this place while browsing for an answer to my question. :)
I've had more members and people willing to help here then anywhere else, seems like a very "RAD" place to visit...thanks for all the input so far all ;)
-
One option could be to use the standard bottom bracket, well greased, and use the outer plastic guards from a modern semi-sealed bottom bracket kit eg:
http://www.ukbikestore.co.uk/product/163/bb4jsa/4-jeri-smart-arse-bmx-bottom-bracket.html (http://www.ukbikestore.co.uk/product/163/bb4jsa/4-jeri-smart-arse-bmx-bottom-bracket.html)
Basically, in it's stock form that's what the DX cranks came with. They are a cone and loosebal setup and they have these cool plastic cones that slip over the cup edges and somewhat seal the bearings from the elements.
Ideally I just want to have a total sealed cartridge bearing setup for lack of maintenance and better performance. If I find a setup that uses cartridge's then I can use full ceramics or Hybrids, huge difference in performance and smoothness compared to a OS ball and cage.
-
Well it was a longshot but I figured I would at least ask first. Looks like it's time to have a custom spindle made :daumenhoch:
-
I also have an question....
ever seen one like these...
Shimano DX cranks , with Motobecane written on it... Its a two speed ....dubble blade :smitten: :smitten: :smitten:
i did find it last weekend . It came from a new OS Motobecane ...and it was never used. They changed the Motobecane to single speed ..
(http://i1194.photobucket.com/albums/aa366/renken2000/shimanodxcrank001.jpg)
(http://i1194.photobucket.com/albums/aa366/renken2000/shimanodxcrank002.jpg)
-
Nice score ;) You don't see too many of those re-branded DX's http://bmxmuseum.com/bikes/motobecane/34835
-
Nice score ;) You don't see too many of those re-branded DX's http://bmxmuseum.com/bikes/motobecane/34835
think so..but this is a two speed crank. The one on the link is one speed.
Very rare any way... :smitten: :daumenhoch:
-
That Motobecane was marketed over here as the Yamaha BYZ , same build spec too :smitten:
-
Bought some new Shimano DX crank decals from Dell
and there shimano dx again :smitten: :smitten: :smitten: