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Picture of Make a Mini Recumbent from a Kid Bike

Step 1: CAD system Layout

Picture of CAD system Layout
CAD (Cardboard Aided Design) layout of 12 inch wheeled small recumbent. Yellow lines show the chain line.

You can also see the Center of Gravity (approximately the bellybutton) is about 1/3 of the wheelbase distance ahead of the rear wheel contact point.  This good weight distribution leads to nice handling.
 

This is great! Could you add some huge curved handlebars to this? The steering looks less than comfortable.

Yup, chopper style handle bars I think.
Woodenbikes (author)  gravityisweak1 year ago
Yes!
These little bars are a stretch down to reach. The good thing is they pass under the seat so you have a lot of steering input ability of low speed balance.
With big curved bars you want to maintain steering clearance so they need to be big enough to pass around the chosen (and possibly carved down) seat. A longer forward stem reach could help.
also double check to c if u have the same metals as well.
Cdn Sapper3 years ago
Amazing ible!
Love it! This will be my new project...
MaxineLaRue3 years ago
OooH! I want to see the video too!
This is super-cool.
rockgod13 years ago
Nothing quite like a grown man riding a small girls pink bike, lol.
snotty4 years ago
Nice ride!

But your video has disappeared and it's what really made this instructable. Any chance you could repost the video?
B4SEC4MP4 years ago
This is awesome! Might I suggest adding a wheelie bar!?!? That would take this bike to the next level. The only thing cooler than riding this bike down the street would be riding this bike down the street popping a wheelie!!!
husamwadi4 years ago
hey if you dont want those monkey lights.....heh heh heh :)
husamwadi4 years ago
this is cool, but man! I hope the tires don't pop!

-hey check out this mini recumbent i made, "POW, POW" uurghh, never mind...

Lol, just kidding, but this thing is really tight!

keep up the good work!
Cardboard Aided Design...nice
Woodenbikes (author)  mattthomas9920034 years ago
'Keepin' it real' since 2002.
Questor4 years ago
I notice a tire change.
minor mishap, perchance?
Woodenbikes (author)  Questor4 years ago
Dumpster bike problem... old rubber... tire bead wire was exposed and was puncturing inner tube. (Tire possibly not meant for plus-sized kids like me.) I replaced the tire with another dumpster tire from a high-end baby stroller.
toad4 years ago
Great ride, maybe bolting a rear deraleur somewhere around the headset to take up the slack in the chain. Some thing like a long cage mountain bike one.
Woodenbikes (author)  toad4 years ago
That would handle the chain, but with a rear coaster (back-pedal) brake, one would need to back pedal a whole revolution (winding up chain from the lower run and sagging it into the upper run) before the brake would engage.
caarntedd4 years ago
This looks super dangerous, and super fun. Five stars.
mjursic4 years ago
Love it! Now let's figure out a way to get a decent ratio on it so you're not pedaling like the dickens.
Daftehh4 years ago
my goodness look at it go
avicena4 years ago
Cool...
when any body think it a junk, it can reused by some way...I like it!!...
The concept alone is great, but the CAD pushed it over into brilliance.

Wonderful work!
I know who I'll be voting for in the contest!
jovino4 years ago
HAHAHAH!!!! Brilliant!
macrumpton4 years ago
Very cute!
It looks like it could use a longer boom for your leg length.
Matin4 years ago
What a Cute and Fun bike!
I am keeping my eye out for small kid bike
How about no weld wood version
BtheBike4 years ago
SA-WEET !! I've been trying to mock up a concept for a cargo bakfiets style bike with a regular and kid bike . this give me a few ideas . great work Wood
berserk4 years ago
Very nice! Would not want to commute on it, but I have not had a bike make me smile like that in a while! :-)
I've been building recumbents since '86 and your first effort looks good. You did make one junior mistake... the bottom bracket threads are in reverse and will eventually unwind themselves loose.
Woodenbikes (author)  PurplePeople4 years ago
The BB shell is the large one piece crank type with press in thread-less bearing cups. (no threads there). The chain drive remains on the right hand (traditional) side of the bike. Nothing is reversed from traditional, so I do not expect anything out of the ordinary.
Yeah... I see that now. My bad. Maybe we'll see you at the races.
ilpug4 years ago
Of all the crazy stuff... I love it!
Alecw354 years ago
maybe you could add a 2 ring chainset to the pink bikes bb. then run front chain to smaller ring. big ring to rear wheel. make the gearing a little bit higher.
tho I geuss its the smaller diameter threadless bb. so wont easily take cheap mtb one piece cranks
Woodenbikes (author)  Alecw354 years ago
One could easily put the larger Mountain bike cranks and chainheel setup in the front BB for a higher gear. However, I'm building this bike to share with little kids so I wanted to use the short cranks to accomodate small and large riders and I wanted to use the small chainring to keep the top speed down the to 10-12 MPH for safety at Maker Faire. (It's crowded with excuberent people riding 8 of my bikes at a time.)
Great concept and fun but the mechanical advantage is probably less than desired
wobbler4 years ago
Utter madness! Somewhere in you there is Coco the Clown desperate to get out. I love it!
lemonie4 years ago

Quality!

L