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Messages - G

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31
The Bike Shop / Re: lets talk tire sizes, pressures etc
« on: November 23, 2015, 05:04:26 PM »
but what about answering my question, which is that , is there any truth behind bigger tire  - less psi - better bunnyhop?
i dont think so but..

I think that's too subjective. The energy needed to compress the tyre to the rim is simple provable physics, how you bunnyhop and what is "better" has too many variables and will probably vary with the rider. Simple enough thing to try for yourself and see. Build a basic bunnyhop bar, and try it at varying pressures...

:)
G.

32
The Bike Shop / Re: anything wrong with running a sprocket like this?
« on: November 23, 2015, 09:11:20 AM »
Tiny bit more torsional stress on the axle but not a huge worry, be better to run the crank closer in if you can, but you gotta do what you gotta do to let the cranks clear the chainstays...

:)
G.

33
The Bike Shop / Re: lets talk tire sizes, pressures etc
« on: November 23, 2015, 09:09:23 AM »
I like big tyres. You have to hit them harder to pinch puncture (for a given pressure) and they are more forgiving on hard landings (for a given pressure) but have very similar rolling resistance (for a given pressure).
Personally I run the same pressure (so I get these gains in trade off for a bit of weight) but if you want to run lower pressures then you are more likely to "get away with it" on wide tyres than on narrow ones... It's all personal preference, live and let live etc...

:)
G.

34
Some kids have way too short a memory to see the exquisite irony in this post.

Never had a product recall.

Sure we had way more QC issues with the early batches of Wombolts and even Twombolts than I would have liked but there was nothing inherently flawed in the design which is backed up by the fact that we still make cranks using this design and they do have a very good reputation for strength now.

On the other hand, putting big sharp cornered slits down an axle loaded in combined bending and torsion was to my mind pretty obviously about as terrible a design as you could imagine... it's not like a few of these "might" break eventually, it was inevitable that they all would if actually ridden.

:)
G.

35
The Bike Shop / Re: Gland 4 installation tips
« on: November 23, 2015, 08:57:32 AM »
The ties "ought" to be OK. they are nylon and should be just as able to handle a grind as the guard itself, I dont think that they actually grind through significantly before they snap, so it really puzzles me that a small minority of people have these constant issues with them breaking. Most people seem to do well with the guard but I am still very keen to find a solution though and so if anyone who does constantly break them wants to email me detailed pictures of the broken ties and how they had them fixed on in the first place that would be super helpful for my product development.
I think a lot of it comes down to landing on the edge of the guard which tries to jam the guard up which obviously allows the spoke angle to act like a wedge and magnify the load.

:)
G.

36
The Bike Shop / Re: What's the status on new Odyssey products?
« on: November 23, 2015, 08:52:10 AM »
G, I saw a couple posts on Instagram about the Dugan Grandstand pedals, but nothing showing anything special about the bearing system, spindle, or the like. Dan's has them in their catalog as well and they mention something about an unsealed bearing, I was under the impression they didn't use any bearings, but bushings instead.

Bushings/Plain Bearings. They are a teflon filled plastic. Couple of little design details help make the pedal easy to make so we can make it super affordable without having to use looseball which would make it either very thick or have a piss-weak axle. So far we've only really been showing the plastic ones, but we also have an aluminium version with steel pins which I am absolutely loving. Hopefully we will get the issues with tooling sorted out soon and actually start selling them!

:)
G.

38
The Bike Shop / Re: 3D printed titanium parts
« on: October 31, 2015, 05:17:17 PM »
steel 




Spend lots of money 3D printing dropouts then ask a drunk gorilla to weld it into a frame between shots?

:)
G.

39
The Bike Shop / Re: Keychain woes?
« on: October 06, 2015, 06:49:57 AM »
I can't get mine smooth, and the only factor left is my Ratchet. Any ideas?

Sorry if this seems obvious but have you tried a bit of lube? The oil that chain companies put on at the factory is more about preventing corrosion in the box than quiet smooth operation.

:)
G.

40
The Bike Shop / Re: On the subject of steering geometry
« on: October 03, 2015, 05:23:11 PM »
Everything else CANT be the same.

74 and a 32mm trail will create a 15mm or so longer wheelbase, the front wheel will be further out front. If you use a shorter toptube frame to compensate, then the bars will be furtherback, if you move the bars forward to compensate then the steering axis is behind... etc etc..

In terms of TRAIL yes, they will be close and feel similar, but when you "feel" the steering, you feel the stability due to trail AND the stability due to your weight pushing down, and the more relaxed angle and longer rake will definitely feel more stable because of it... more here:-

http://www.gsportbmx.com/2004/05/steering-geometry/

:)
G.

41
The Bike Shop / Re: Keychain woes?
« on: October 02, 2015, 08:20:02 AM »
FYI George I didn't get a chainbreaker adapter with my solid pin keychain. I received extra master pins instead

You dont need an adaptor for the solid pin version... Adaptor is only needed on the hollow version because otherwise the pin of the chainbreaker just slides inside the pin hole... ie.That's normal.

:)
G.

42
The Bike Shop / Re: Hey G/Odyssey
« on: September 30, 2015, 09:55:09 AM »
Can I bolt the 30t mds guard to the c-512 sprocket?

No idea sorry...

Hey G,

Sup?

Hey Bobby, you know, same old same old or something... you?

:)
G.

43
The Bike Shop / Re: Euro/Interbike 2015
« on: September 25, 2015, 08:56:15 AM »
T least you'll be able to run everyone's cranks. And buy bearings off the shelf for some of them

Technically speaking you still won't be able to get off the shelf bearings for 22mm mid. They are generally only common now in the bike industry. That was the whole benefit of Spanish BB's, the 37mm outer diameter was available off the shelf in many inner diameter options to suit the numerous spindle diameters of the day (excluding 15/16" as it wasn't around).




However, Spanish was always just that bit too small.

:)
G.

why? are they really too weak? never had a problem with mine I think (when I used to run it) , saves a considerable amount  of weight , with bearings and bb being smaller.

Yes. On a 22mm crank it was just too thin. Sure some people were "fine" with a Spanish BB on 22mm but a good proportion DID break... never seen a Mid BB bearing broken in the same way...

Quantify "considerable amount of weight"... Was probably a maximum of about 50g, which seems a very small penalty to go from frequent failure to zero...

 
:)
G.

44
The Bike Shop / Re: Euro/Interbike 2015
« on: September 24, 2015, 03:34:36 PM »
T least you'll be able to run everyone's cranks. And buy bearings off the shelf for some of them

Technically speaking you still won't be able to get off the shelf bearings for 22mm mid. They are generally only common now in the bike industry. That was the whole benefit of Spanish BB's, the 37mm outer diameter was available off the shelf in many inner diameter options to suit the numerous spindle diameters of the day (excluding 15/16" as it wasn't around).

No.

Mid has ONE standard size, 3/4" (so fit normal Profiles etc).

Spanish had ONE standard size 20mm (so fit nothing except some cheap OEM cranks)

However, Spanish was always just that bit too small.

:)
G.

45
The Bike Shop / Re: araya 7x rims
« on: September 15, 2015, 05:14:17 PM »
7x was very light and very weak.

Super 7x was fairly light and fairly weak.

Chrome was good on some batches, shit on others. Older Araya rims had amazing chrome somehow but it got worse..


:)
G.

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