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Message started by paulmarshall on 05/14/14 at 15:18:47

Title: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 15:18:47

Why is 1,618 so important to know when building a bike?
https://www.youtube.com/watch?v=oZ_rnmB2RBI

Thoughts please. :)

Title: Re: How to calculate the proportions of your Bike
Post by Yoshi on 05/14/14 at 16:40:57

WTF, I tired watching it but it sounds like he's just talking and talking :-D

you really think those measurements matter? Hell no


Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 17:04:04

Thats strange it works for me. Maybe if you copy and paste 1,618 into YOUTube this might work.


584958616D63697A7B6361080 wrote:
WTF, I tired watching it but no go :-D


Title: Re: How to calculate the proportions of your Bike
Post by Yoshi on 05/14/14 at 17:14:13

LOL, link works. I think the video sucks

everyone has their own opinion..

Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 17:30:12

Maybe I should have explained better, thoughts on the 1,618 formula please. :) Not the entertainment aspect of the video.

Title: Re: How to calculate the proportions of your Bike
Post by Serowbot on 05/14/14 at 18:18:31

Coo-coo for Cocoa puffs...  ::)...

Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 18:19:59


7C6D7C4549474D5E5F47452C0 wrote:
WTF, I tired watching it but it sounds like he's just talking and talking :-D

you really think those measurements matter? Hell no
No i don't think those measurements matter however i do find those measurements interesting.


Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 18:20:41

coco puffs :D


6177607D65707D66120 wrote:
Coo-coo for Cocoa puffs...  ::)...


Title: Re: How to calculate the proportions of your Bike
Post by Serowbot on 05/14/14 at 18:34:19

Coco Puffs... :P...

;D...

Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 18:38:31

Maybe this is a little too deep for some of us. ;D

Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 18:40:11

I know i struggle to get my head around it.  :o Bugga the formula just do what looks good. ;)

Title: Re: How to calculate the proportions of your Bike
Post by verslagen1 on 05/14/14 at 18:49:21

the number isn't strictly 1618, I use [ch960]/2 (pi/2) or 1.57 all the time.
but most of my stuff is just pushed around till it looks right anyway.

Title: Re: How to calculate the proportions of your Bike
Post by arteacher on 05/14/14 at 19:36:18

I built a listening room to that ratio- short wall 1.618 * ceiling height, long wall 1.618* short wall. This drastically reduces standing waves and therefore resonant nodes, in the room.

Title: Re: How to calculate the proportions of your Bike
Post by old_rider on 05/14/14 at 21:15:35

One word.... BULL....

The overall looks of a bike is about flow.... not some silly number calculated to minus 1.618 of any given part or dimension.

Someone is stuck on themselves... and think they know the answer to life.

The Japanese think they have the answer...its called "feng shui"... should I do a video for that?

Symmetry.....there is no measurement for it... it just IS.... 8-)

Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 21:57:37

I agree that building a café using the formula and building a café not using the formula isn't  going to alter the way both these bikes operate.
I find it very interesting however that some major automobile manufactures and possibly some motorcycle manufactures use such formulas when drafting plans to produce new vehicles. a lot more thought goes into these than previously realised.
I wonder if Ryca takes this into account?

Title: Re: How to calculate the proportions of your Bike
Post by WD on 05/14/14 at 22:08:18

Math...  :-X

Title: Re: How to calculate the proportions of your Bike
Post by Serowbot on 05/14/14 at 22:12:34


4053170 wrote:
Math...  :-X

Math, with an accent... :P :P :P...

Title: Re: How to calculate the proportions of your Bike
Post by paulmarshall on 05/14/14 at 22:13:10

wow really and this makes a difference to sound quality?
4B404049454A4B5150240 wrote:
I built a listening room to that ratio- short wall 1.618 * ceiling height, long wall 1.618* short wall. This drastically reduces standing waves and therefore resonant nodes, in the room.


Title: Re: How to calculate the proportions of your Bike
Post by Dave on 05/15/14 at 04:55:47

OK.....I failed.

Tank ratio to area behind seat........2.50.
Tank ratio to seat length................1.48
Tank height to seat height..............1.42.

Now I have to start all over! :o

Title: Re: How to calculate the proportions of your Bike
Post by Dave on 05/15/14 at 05:19:50

I do agree my tank is a bit large, and compared to the RYCA the tank is pushed farther forward at the steering head - but I do like having 3.2 gallons before I hit reserve!

The stock RYCA tank proportions don't make ratios that are much better than mine.

Tank ratio to area behind seat........2.09.
Tank ratio to seat length................1.22
Tank height to seat height..............1.30.





Title: Re: How to calculate the proportions of your Bike
Post by ToesNose on 05/15/14 at 06:57:08

Beauty is in the eye of the beholder, as long as anything that you have makes you happy who cares what anyone else thinks  ;)

There are certain things that the 'Golden Ratio' works on, but it's definitely not the only way to come out with an aesthetically pleasing result  ;D

Title: Re: How to calculate the proportions of your Bike
Post by zipidachimp on 05/16/14 at 20:34:54

1.618 placement of speakers on a vertical baffle.  :D

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