Singlespeed & Fixed Gear - Another NJS Question

So, NYCBikes said something the other day that caught my attention.
Well, he said a lot of things that caught my attention, but one thing in particular.

"I think the 75's are gorgeous and I tell people if they want to drop dollar on a crank, drop it there instead of on a Dura-Ace or a Campy, but why? Because it's pretty? Sure that's fine, but not enough for me to spend $100. Because I can race keirin if I ever get to Japan (because they bothered to pay the licensing fee for NJS certification)? Well, I'm never going to get there..."

Is that really how it works?
What is the process for an item to get NJS Certification?

i assume you need to pay to get it reviewed, like an application fee, don't worry there will be no NJS stamped huffy

Not entirely. Parts do need to pass certification and there is a cost associated, but there are very rigorous technical tests that the part must pass in order to be approved.

For example, a pedal is tested by applying a force of 1500N (newtons, 337lb/feet) to the pedal from above while it is fixed (screwed) into a stationary platform for 30 seconds. The pedal cannot have any more deformation than 1.5mm from horizontal after the load has been removed.

A chain cannot break under a static force of any less than 9000N, etc etc. My strong suspicion is that the XDs would not survive that level of force.

im pretty sure that you can't just race keirin in japan if u want, u have to go to keirin school and to get into the school you must either be japanese or have a medal in an olympic track event

Not entirely. Parts do need to pass certification and there is a cost associated, but there are very rigorous technical tests that the part must pass in order to be approved.

For example, a pedal is tested by applying a force of 1500N (newtons, 337lb/feet) to the pedal from above while it is fixed (screwed) into a stationary platform for 30 seconds. The pedal cannot have any more deformation than 1.5mm from horizontal after the load has been removed.

A chain cannot break under a static force of any less than 9000N, etc etc. My strong suspicion is that the XDs would not survive that level of force.

That's what I'm looking for.
Thanks for the info.

Not entirely. Parts do need to pass certification and there is a cost associated, but there are very rigorous technical tests that the part must pass in order to be approved.

For example, a pedal is tested by applying a force of 1500N (newtons, 337lb/feet) to the pedal from above while it is fixed (screwed) into a stationary platform for 30 seconds. The pedal cannot have any more deformation than 1.5mm from horizontal after the load has been removed.

A chain cannot break under a static force of any less than 9000N, etc etc. My strong suspicion is that the XDs would not survive that level of force.


so the whole talk about, " i dont get why people ride NJS stuff on streets, they're too weak, and wont be able to withstand the urban crucial environments anyway."
is compelte BULL?

completely.

not always so...just misguided. Hubs made for the track may be more vulnerable to the elements becuase a lack of elements in the enviroment its designed for.

so the whole talk about, " i dont get why people ride NJS stuff on streets, they're too weak, and wont be able to withstand the urban crucial environments anyway."
is compelte BULL?

at the same time, things with/without stamps can't really be compared for strength based on that factor alone. It's very difficult for non-japanese parts to get NJS certification (and somewhat pointless), but the lack of a stamp for most parts means the lack of an application, not the lack of strength. Also, what may constitute overbuilt for the track will not necessarily hold up to the rigors of street life. I really really like my njs DA hubs and they'll roll forever if I start them spinning in the stand, but I mess on Phils because I'm pretty sure I could damage the DA's on the roads around here.

at the same time, things with/without stamps can't really be compared for strength based on that factor alone. It's very difficult for non-japanese parts to get NJS certification (and somewhat pointless), but the lack of a stamp for most parts means the lack of an application, not the lack of strength. Also, what may constitute overbuilt for the track will not necessarily hold up to the rigors of street life. I really really like my njs DA hubs and they'll roll forever if I start them spinning in the stand, but I mess on Phils because I'm pretty sure I could damage the DA's on the roads around here.


Just ride them. I don't think you can mess them up. I ride hard on cobblestone streets whenever I find them and the way streets are now it like riding on cobbles.

stop looking to deep into NJS. It what they want to be even in Japan , not the world. They do have a high standard but I still ride my Campys and don't buy for NJS either.

I like NJS/Keirin because it is a set standard and I can get parts without them changing every other year and I like steel.

The UCI seen this with the Hour record and knocked all records back to Eddy Merckx off the shelf. They also brought back the triangles (main and rear) for frames. No lotus frames like Boardman first used for the record.

Buy because you like it not because others like it or becomes a fad.

S/F,
CEYA!

aren't the warranties on dura-ace and campy pista cranksets void if they're used on the street? while i might be willing to spend the money on either with a matching bb, i'm afraid the grit from the streets would destroy them. same goes for nicer than sylvan track pedals.

It baffles me that people think parts made to higher tolerances and with better materials will perform worse on the street. My custom nuevos have fared much better this winter than my plain sylvan tracks. I did trash an NJS BB, but that's because I was stupid about maintaining it. I also nearly trashed a non-NJS headset because of subpar maintenance.

You can't go wrong with the top of the line DA and c-record and Record components as long as you maintain them.

Exactly, it's all about maintenance, which a lot of people don't want to bother with or worry about.
They're great parts, but not made to deal with water and salt and grit.

here's some interesting stuff about keirin in japan from a foreign rider's perspective.

http://www.josiahng.com./43129.html