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2007 Recumbent trike

Idea for the trike

The two complete wheels weight is 10.5 lb

Wheels are BMX 20" rims and wheel chair hubs with drum brakes

This is the best image of my trike

 

Aleksander
Nenad

 

 

Geometry of the trike

Right kingpin parameters :

xa = - 27 mm

ya = 77 mm

za = 385 mm

xb = - 15 mm

yb = 65 mm

zb = 325 mm

xc = 0 mm

yc = 50 mm

zc = 250 mm

xd = 50 mm

yd = 0 mm

zd = 0 mm

Calculations

On pivot axle (w) :

Theta = arctang ( ( xd - xc ) / ( zc - zd ) ) =

= arc tang ( 50 / 250 ) = 11.31°

Beta = arctang ( ( yc - yd ) / ( zc - zd ) ) =

= arc tang ( 50 / 250 ) = 11.31°

 

Gamma angle

Gamma = arc tang ( ( yc - yd ) / ( ( xd - xc ) 2 + ( zc - zd ) 2 ) -2 ) =

= arc tang ( 50 / ( 50 2 + 250 2 ) -2 ) = 11.1°

 

2009 Technical drawings

Trike three views schematics

Trike wheels and headset plan

Trike front axle plan

Trike kingpins plan

Trike frame plan

Trike handlebars plan

Trike seat plan

 

Trike detailed construction pictures

 

Technical data

Designation

-

Units

First crank

53

teeth

Second crank

39

teeth

First gear

13

teeth

Last gear

32

teeth

Track

27.2

inch

Width

30.7

inch

Wheelbase

37.4

inch

Length

68.1

inch

Seat height

6.3

inch

Crank height

11

inch

Vehicle weight

40

lb

Maximal pilot weight

175

lb

Rolling drag coefficient m'

0.006

-

 

2007 Commuter

I decided to build a velomobile

 

 

 

 

 

 

 

 

 

 

 

Wheel fairing

 

 

 

 

 

 

 

 

 

 

 

 

 

2008 Lightning

 

 
Last modification : 11 January 2012 Copyright © 1996 - 2011 www.amidesign.ch Contacts : FaceBook - YouTube - Picasa