The Street > The Bike Shop
The "what the hell is Odyssey / Gspprt cooking up" thread.
streetStreet:
I dunno what the fuck you just said little kid, but you special. You reached out, and you touched my heart.
tecnic1:
--- Quote from: JohnW on November 26, 2014, 09:41:44 PM ---My 4 pawl driver skipped way more than my 3 pawl ever did.
--- Quote from: tecnic1 on November 26, 2014, 08:11:56 PM ---
--- Quote from: JohnW on November 26, 2014, 05:55:57 PM ---Torx is the worst invention. Causes so many problems on cars.
--- End quote ---
I've never rounded one. I vaguely recall learning at some point that they resist rounding better than hexs.
--- End quote ---
In theory. Add in rust, over torquing, and parts stretching/compressing and they're way more of a hassle than they're worth. Unless you use an impact gun to remove them, there's a good chance of stripping because they do NOT like to be used with a ratchet or L shaped key. They like perfect rotational force whereas allens seem to be more ok with a lever being used. At least in my experience anyways. I run into a lot of problems with Torx bolts on automotive brakes.
--- End quote ---
Brakes aren't fair because in addition to the large (mostly shear) stresses, corrosive environment and presence of brake dust (which tends to penetrate crevices it shouldn't be able to, then bakes/rusts things together), they are also seeing a ton of thermal cycles. I kinda think that the reason Torx is used so relatively extensively in brakes is because of the cam out resistance.
That's all speculation though, and just because I've had success with them doesn't make them the best, just what I prefer and use when I can. In my limited (and not very successful) FSAE brake design experience, I speced 12 point bolts for all the brake fasteners, but that was because that's what they used on F1 cars, so they had to be good.
Louis:
--- Quote from: torontoflatlander on November 14, 2014, 06:17:13 PM ---
--- Quote from: Admiral Ackbar on October 28, 2014, 09:24:54 PM ---its coz profile uses imperial measurements so their 22mm is actually whichever imperial fraction is closest to 22mm, which is 7/8" or 22.225
basically, profile is retarded
#muurica
--- End quote ---
Is it not Profile that uses 7mm broached crankbolts? Who in their right mind said "7mm is a good idea"?
--- End quote ---
They use 9/32" crank bolts because they're so American, that all they know is imperial.
A 7.5mm allen is VERY close, so it works.
Thomas031:
Thanks for your reply George :)
Just want to clarify that i was in no way talking about the performance of the Ody/Gsport products, i have yet to buy one.
Also i keep in mind that a isolated bad experience with any manufacturer should not mean a concept must be questioned.
I have actually had a Salt hub that worked beautifully, 3 pawled. Think it might even have been joytech.
I can be a bit of an ass, questioning authority, but it can only help me reach a better understanding.
Thought about it a bit more, i guess skipping could also have something to do with bigger and smaller ratchet rings, as well as with the depth and width of the teeth individually.
Or spring tension and teeth wear. Last two i happen to know weren't the root causes of skipping in my previous hub though.
And there will likely be other factors, as well.
Can't blame me for trying to make sense out of it though. :)
On a bright note, if i'm ever getting my bike ridable again, my rims are going to be laced to an Antigram, or a Simian, haven't heard a single bad thing about the first.
I know you guys know your shit, more than any other company out there atm.
--- Quote from: bsd510 on November 27, 2014, 12:45:11 AM ---fwiw i've had the same experience as thomas with my bsd which has 3 pawls. When I turn the driver very slowly, you can feel/hear two clicks, the first one loud and the second one very quietly with just the tiniest bit of movement from the first click. I never had any issues with my primo mix which has 4 pawls
--- End quote ---
Just so happens that i have a friend with a BSD hub that i noticed skipped just like mine did.
Looked up the internals, same internals.
The BSD hubs essentially identical to the Kink Incite.
wide pawls shallow teeth, small hub profile (thus small ratchet ring OD) might be the problem, idk. They just don't seem to be doing very well.
After what G said, i just don't feel good blaming that little extra click with making those 3 pawl hubs skip and pop.
It makes some 3 pawl hubs skip and pop but others seem to perform great.
Still curious why that might be.
LukeTom:
--- Quote from: G on November 27, 2014, 08:43:15 AM ---A chair with 3 legs doesn't fall over, and when you stop thinking about chairs and think about drivers it also means that the driver tends to "self centre" between those 3 pawls, spreading the load as evenly as possible and reducing stress and wear.
--- End quote ---
Girlfriend asked what I was reading. Tried explaining this concept to her. She thought about it long and hard, and asked 'what if all the legs were in the middle, and I sat on the edge? the chair would fall over'
What do you say to that G.
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