Messages

211

The Bike Shop / Re: Quick Questions

« on: December 22, 2014, 09:08:07 AM »

Is there a park tool crank puller for Profiles or do I need the Profile specific tool?

G.

212

The Lounge / Re: For those who know fasteners, machinists, and doers, A question.

« on: December 22, 2014, 09:06:40 AM »

split view by MilkyWilky, on Flickr



I'm having a hard time imagining what would be bolted from the top, that's if I were to split the central column for assembly?

Thanks

So make 5 parts/assemblies.

1. The base with the rings. In the middle of this put a threaded boss.

2. Lower shield-plate things and part of central spine. Can be turned from a big billet, bored out between outer shields and inner-core most of the way through leaving a flange in the centre; then put on milling machine to separate shields, create inlay grooves and bore away sections of flange to leave spokes. Screws on to base boss.

3. As 2, just with the next level of shields. Screws on top of section 2.

4. As 3. Screws to top of section 3.

5. Top cap, screws on.

Hope this helps clarify.


G.

213

The Lounge / Re: For those who know fasteners, machinists, and doers, A question.

« on: December 20, 2014, 11:07:06 AM »

Since the 3d image of the inside is gone I cant be sure, but with the dual threaded rods you may have problems assembling if they are offset by an angle on the same piece.

I noticed the size you quoted before but hard to get an idea of how thick the plates were from that. Head pulling through could be an issue as you say.

Right now (without the pictures to remind me) I would think that your best bet is sections already fixed to the central column then bolted from the top. You could simply machine each section entirely from a big billet...

I have never come across a full 5 axis water jet, I dont think that is going to work. 3d printing may be a better option here, though it will need a substantial amount of hand polishing to finish and you are likely to loose the crispness of your edges to a small degree.


G.

214

The Lounge / Re: For those who know fasteners, machinists, and doers, A question.

« on: December 19, 2014, 07:23:29 AM »

Hard to say without the sense of scale, sounds pretty big, so either make four sections and bolt together down the centre (and you can do all your fastenings of the outer plates from top and bottom before bolting sections together). Or use the wood inlays to hide the heads of fasteners, you could dovetail them in there if you wanted to be fancy.

For the conical bottom, I would turn rings then machine the angle, then weld links on the inside and then glue in the wood inlays to hide the links. If you are going with the gaps then just weld the rings at the bottom where they meet.


G.

215

The Bike Shop / Re: New odyssey stampy video

« on: December 17, 2014, 06:09:49 AM »

I was stoked to see another Stampy test.  But was bummed it was another fork test.  I was hoping for something else, but I understand the reasoning for the second go at forks. 

Also..... this could be a little bit of the Coors Lite talking here.....  but C'MON!!!  Don't you feel responsible in the slightest bit to let people know what BMX products are designed in an inferior/dangerous way?  I know that sometimes you can stir up the shit pot too much to the point where you might fall in and then be covered in shit.....  So I do get it on one hand.  But on the other... at least you can get out of the shit pot, take a shower and not smell like shit after a few days.  Everybody else would be forever smelling of the stench that is doo doo.

Yep, we agonised about this, but BMX is way too small a pond to start taking a big dump in the middle...


G.

216

The Bike Shop / Re: IS GALAXY THE NEW OILSLICK??

« on: December 17, 2014, 06:07:16 AM »

I think when you are down at sea level and not waaayyyy up on that high horse it looks a bit different.  Just a theory, though. 

BANG BANG!  SHOTS FIRED!  haha   

I don't think I would ride it on any of my personal bikes.  Right around Interbike time when everybody was dropping sneak peaks of this stuff there was some (presumably) high school aged ramp tramp that was lurking at our skatepark.  She had on the same leggings that were pictured earlier in this thread.  To me, every time I would see my seat it would remind me of haggard ass ramp tramps and would make me less stoked on my bike.  And I 100% dig the Madera hubs.  They totally give off a "nebula looking ass" vibe.

My wife is way into it though, even though she doesn't wear the leggings.  I'm planning on grabbing one of the Tripod seats for her bike as per her request.

There's a "your wife never wants to keep her leggings on for me either!" response begging to go in there... but it is already starting to get a bit out of hand so I'm going to pull out...

BOOM!

Personally I am not a huge fan of any of it. The odd component is cool, eg. Jim B's new bike definitely works well with the seat and a sticker:- http://instagram.com/p/wPAOiHwEZY/

However, just as a matter of basic observation, the idea that the Total frame looks like the Odyssey Galaxy is like saying this:-



Looks like this:-




G.

217

The Bike Shop / Re: IS GALAXY THE NEW OILSLICK??

« on: December 16, 2014, 09:49:08 AM »

The biggest difference I see is that the Odyssey stuff looks way closer to those chick leggings than the Madera hubs.  But I still see space 'n shit on all of that stuff... even the Total frames. 

Seriously?

I see crazy clouds and swirls and shit on the Odyssey stuff, and then a frame with a fade paint job with white splatter.. Maybe I need an eye test?


G.

218

The Bike Shop / Re: IS GALAXY THE NEW OILSLICK??

« on: December 15, 2014, 02:15:34 PM »

There is a big difference between the Odyssey Galaxy stuff and those other items. Just look closely at the seats and then compare.


G.

219

The Bike Shop / Re: New odyssey stampy video

« on: December 15, 2014, 02:10:53 PM »

G, how much input did you have in the stampy test and the ody forks design?

Lots.

Rad. Just to put it all into context, what sort of real world impact would cause that amount of deflection we're seeing?  Ie 70kg rider from 4ft, etc, etc....

Is the test applying a predetermined load, or is it deflecting the forks a set amount?

It is applying a set load. 5000N for the first half million cycles. All our competitors failed well within this first section, but ours were still going strong so we ramped up the load to 6000N in order to actually break them, and even then it took a further 150k cycles...

It is impossible to draw an exact analogy here with riding. You can ride off a curb with your arms and legs locked and put a huge load on, or you could ride off a 6 foot loading dock and land super smooth. I am working on some strain measurement stuff at the moment to try to get some "examples" of loads applied, but it can never be definitive. I would guess that this (5000N) is about the load that most people apply (momentarily) on their bigger tricks (jumping down a 7-8 stair set perhaps); but this is very much a guess right now.

It looks like this test was the same as the original, cycles of 5000N (at 01:08)

Previous test was 4000N, which was the maximum we could so with a single cylinder. New rig lets us use two.

If I remember correctly G mentioned previously that they only tested one pair of forks per competing brand. If this is the case again then it is a bit weird, statistically, to round up all forks for which n=1 to within 0.1 K, and for the one brand for which n≥1 (I assume more than one Odyssey fork was tested) to round up to 650 K+. It's not wrong perse it's just a bit of a weird way to represent your data in my opinion. What is the number of replicates, average number of cycles and standard deviation for Odyssey forks?

I agree to some extent.

I wanted to present the data slightly differently, but it needed to be a nice clear easy to read visual.

Our fork did 500k cycles at the same load as the other forks (5kN) and just under 150k cycles at a much higher load (6kN). Rather than make this too complex, I think it was fair for us to say that at the same load throughout (5kN) we would easily have surpassed 650k cycles. This is what the bar graph is meant to represent.

Yes we only test one fork from each of our most popular competitors. This is because we have a limited budget, and we purchase each fork in the US and then ship to Taiwan, so we are giving some money to our competitors and spending a lot on shipping and testing.

I hope this all makes sense and seems reasonable, and I am pleased that so many people find this interesting.


G.

220

The Bike Shop / Re: Ruben pedal nut

« on: December 08, 2014, 05:39:41 AM »

Local hardware stores aren't going to stock any left hand thread nuts, don't waste your time. Sorry.

I think you are probably looking at new pedals unless you can find someone local with the same pedal that is worn out from pedal grinds but still has good hardware you can swap in.


G.

221

The Bike Shop / Re: The "what the hell is Odyssey / Gspprt cooking up" thread.

« on: December 08, 2014, 05:37:24 AM »

George,
Are you guys able to publish any of your testing results for the keychain? I'd love to see the tensile strength of both the hollow and solid pin versions compared to a KMC510h

I think the plan is to do some kind of stampy testing, both for straight tensile and impact. The problem is (as always) that the industry standard tests aren't a great reflection of real world riding. eg. nobody ever puts a new chain on, then pedals hard enough to apply over a ton of straight tensile load to the chain. But it is hard to come up with a good repeatable test so maybe we will revert to this.

Hey George, Will there be a batch of 48 hole Simian rears once they come out? Even if it is a small batch i'll be happy. 36 just isnt the same. Still rocking the monkey in the front to a ribcage, Got the porn hub to a old hulahoop in the rear.

Hey George, Will there be a batch of 48 hole Simian rears once they come out? Even if it is a small batch i'll be happy. 36 just isnt the same. Still rocking the monkey in the front to a ribcage, Got the porn hub to a old hulahoop in the rear.

no there wont. they had to flog off the 48h ratchets as complete wheels for $100 (bargain of the century) because they couldnt shift them at full price

^^^^
Partly this, and partly there just isn't room on the flange for 24 holes per side.

The Simian rear is the same flange dimensions as the Antigram and you really need a lot more for a 48.


G.

222

The Bike Shop / Re: Solid is done

« on: December 08, 2014, 05:29:32 AM »

That's true for most of cases, but they charge $500 or more for a frame not different than those they make and are sold for $300 to $370 with what they call additional options included in most of times. In my opinion $400 with brake stuff and one wishbone/S bent CS option included is reasonable.

Until you have built custom frames you have no idea what a ball-ache it is. Setting up jigs and machines, getting all the joints working, even just cutting the tube efficiently is more difficult... and that's before you get to the huge headache of talking to customers who have very specific wishes, want instant communication and delivery etc.

BMX custom frames have always been ridiculously cheap. If you want a custom road or MTB frame, look at the price of an off the shelf high end frame and double or triple it to get an idea of price. Off the shelf BMX frames are already stupidly cheap anyway, so expecting a custom frame for 30-50% more is totally unrealistic.

IMHO Aaron has made a very sensible decision and I wish him all the best with it.


G.

223

The Bike Shop / Re: The "what the hell is Odyssey / Gspprt cooking up" thread.

« on: December 05, 2014, 07:58:24 PM »

Here's a true story: I sold my last BMX bike in 2007 because I needed some cash and was too busy to ride all that much. I said to myself I will build a new bike when the fabled G-Sport Freecoaster is released.

Call me impatient, but I am building up another bike now and I have to ask G: How much longer do I have to wait?

Is there still going to be a G-Sport Freecoaster? Is the Odyssey Clutch the G-Sport Freecoaster? When is the Clutch going to be released? If answer NO to all the above, what freecoaster should I buy?

The Odyssey Clutch hub is based on the traditional axial system but employs the drag mechanism developed for the G-Coaster as well as a load of other subtle changes that fix a lot of the existing issues.
No exact release date yet, but I am hoping it will be late-winter/early-spring next year.

The G-Coaster is not totally dead though, just in a coma, awaiting resuscitation...


G.

224

The Lounge / Re: Shred! Extreme mountain biking (awesome game/app)

« on: December 05, 2014, 06:46:21 AM »

I finally managed to "clear" the manual logs but it was by braking hard on the second rather than manualling.
Was disappointed that it got an update the other day and all that seemed to change was adding an advert for a Tshirt....


G.

225

The Lounge / Re: Do you like old or new bike companies?

« on: December 05, 2014, 06:43:32 AM »

I usually stick to parts from companies I've known for years. Mostly classic companies. My current bike is made of t1, s&m, solid, flybikes, odyssey, g sport, and then a couple of bits from newer companies like éclat and BSD.

BSD is as old as G-Sport I think. I definitely bought a sprocket off Grant back in about 95. Definitely older than Fly.


G.