Introduction: Build a Swing Bike

Hello and welcome,

Here I have a how to make a Swing bike ( Mini ) in 10 steps.

Mind you, you can make a 20"  OR A   24" bike the same way.

Tools required;

Bench and hand Grinder
Hack saw or another way of cutting
Plumming tourch
Hammer
Varety of  tools to take apart and assemble the bike/s
Welding rig;
      Mig, Tig, or cutting Tourch with braze rods
Drill press / drill and drill bits
Bench Vice

Total cost for me will be in the welding, plus any new parts I aquired.
about  $70.00

Skill level;  I would put at an 8  out of  10  and  about 48 hrs + .

Click on any image for a larger view.

Thank you..

Step 1:

Parts needed;

You will need to gather your parts and doner bikes.

I used two 16" girls frame bikes, a 20" front fork, a 16" rear wheel and a 12" front wheel.

I also used a Trail-A-bike frame for the cross / swing tubes.

So here you may need to get tubing in place of this frame.
With this option you may need a person with a tubing bender.

OR > Make your own !  Click for Link....

I think for this project, the tool would need to be 18" - 22" long.

With a slow gradual bend of about 1-3/4 inches.

I'm just guessing as I have yet to make this tool myself.

Click on any image for a larger view.

Step 2:

Remove all parts.

Cut off the head tubes with leads of about 3 inches.

You will need to turn the headtubes up side down for use.

Remove bearing cups, top for top and Bottom for bottom allways.

When cutting swing tubes, cut in a 35 degrees of angle to match up with the headtube leads...

Remember;  these need to be girls frames, not like the Boys red frame I'm cutting here.

Click on any image for a larger view.

Step 3:

You will be useing a handle bar stem for a seat post.

I used the stem from a MTB and one of the longest they issue.

Cut and reform to your needs.

Click on any image for a larger view.




Step 4:

Choose your forks. Not just any fork will work for you.

Be sure it is what you need, that it fits the headtubes you just cut off.

Fork for rear will need to be the rear wheel size.

Fork for the front will be longer than the size of the front wheel.

Ex; 20" rear  x  16" front wheels.
=    20" rear fork  x   24" front fork.

Click on any image for a larger view.

Step 5:

Building your rear fork / frame. This is where some of that hard skill comes in.

Grind away your cut offs to smooth surface. Match your rear fork to lower frame.

Get the angle by installing the fender and rear wheel.

Install crank, chainring, chain and wheel, to be sure your brace rods clear the chain and moving parts.

Flat bar for brace rods work best. However, i have seen it done other ways.

Research is your Friend, look at 100's of photos on the net.
see the way other people have done this. Knowledge is a powerfull tool !

Click on any image for a larger view.

" I wanted to feature this question "

Does the rake angle on the pivot under the seat tend to matter much as far as controlling the bike is concerned?

Read more: http://undergroundvelo.proboards.com/thread/2281/build-swingbike-mini#ixzz2LDsy9JQj

I'm guessing it would, I just made the fork work with the mounting of the rear fender and wheel.

It just all worked out from there.

When side by side, the rear's near match each other and I did not even try.

I just matched to the rear fender mount with the welding of the fork.



Read more: http://undergroundvelo.proboards.com/thread/2281/build-swingbike-mini#ixzz2LDvwNwzU

Step 6:

Removing fork stays ( If ) this is the type of fork you are useing.

Place in a vice, heat well, Pry, twist , remove........

Click on any image for a larger view.

Step 7:

Building your Locking plate and pin. This is where some of that hard skill comes in.

I used 3/16 x 1" flat bar.

3" x 1/4" bolt and  1/8" roll pin.

2 Nuts, washers, spring and turn knob.

You will need to drill the 1/4 bolt with a 1/8" drill bit.

About 1/8th of an inch down from the head of the bolt.

Use a hammer and plyers to install the roll pin.

Then use a hack saw or cut off tool to take the head of the bolt off.

You will need to drill the turn knob out with a 1/4"  drill bit.

Click on any image for a larger view.

Note; This step is only nessary if you wish to make a frame lock.

This allows you to lock the rear frame and the swing frame.

So that you can ride as a normal bike,  OR un-lock it and show off your skill.

If you do not wish to have a lock? all you will need is tab #3 in the drawing.


Step 8:

Create your front fork Fender / Brake stay.

Also the hook plate for the springs and

The front grab bar for the hook plate.

The fender stay was welded at the rear side.

This was just to keep it real clean looking from the front.

Click on any image for a larger view.

Step 9:

Don't you just hate sanding ?

Well, I know I do. Here is an easy how to.

Heat the frame / paint with a pluming tourch and wire brush it off.

Its that easy, even for powder coat paint !

DON'T  heat the wires on the brush, they will fall out.

Click on any image for a larger view.

Be Carefull, Open flame and hot metal can burn you.





Step 10:

I sure hope I've been a big help ? 

I hope I have not missed any steps ?

Be sure to post a Comment or ask Questions ?

I'll do my best to answer them.

Spring length and Strength is up to you.

I say no more than 5 inches long.

Good luck placing, welding, and painting you new ride.


Take care and allways Pre-Fit and measure twice.

Click on any image for a larger view.

Short word of advice, When I do this build again.

I will braze the welds, much cleaner and smoother weld.

I will get more angle on the front headtube.


Special thanks to the Guys for posting this on youtube.

Step 11:

Up dated Photo, I changed the fork for a 20"

The springer fork is longer and raised the front up about 1-1/2" higher than I wanted.

Comments

author
Kurt Beard (author)2013-01-17

This is really great, thanks for showing...

Pastor Kurt Beard

author
Bikebudy (author)Kurt Beard2013-01-17

Thank you, The Kids loved it and I'm glad for the brake in the weather so that they could have some fun.

author
Bowtie41 (author)2013-01-04

Did you make or buy the springer front.I REALLY want one of them.Awesome bike!

author
Bikebudy (author)Bowtie412013-01-04

The Mouse Trap springer front fork were on many vintage muscle bikes and some MX bikes. I got this one off e-bay. Sometimes, they can get pricey. If you check e-bay, try Sears MX Bikes , Murray bikes or just MX Bikes. They are not for sale often. Other wise, try the site I have listed with my profile" musclebikeamerica.com ". I have not taken a photo yet but, I have taken that fork off. It made the front end about an 1-1/2" too high. I insted installed a true 20" "ASHTABULA Lite" fork , also rare. This one is like a Schwinn fork but , with holes drilled into it to lighten it up. It is also Chromed ;-)
I feel the bike looks much sharper with this fork.

author
PintoWorks (author)2013-01-04

Thats awesome!! Thanks for posting!

author
Bikebudy (author)PintoWorks2013-01-04

Thank you

author
Manny B (author)2013-01-03

Man! I never knew that you could remove the stays off a fork. Seriously, that's amazing.

author
Bikebudy (author)Manny B2013-01-03

Without that type of tourch tip, you might not be able to remove them.

It takes good heat, A brazing tourch would work best.

author
DavAnt (author)2013-01-03

this is much more ergonomic than those that use the unicycle wheel!

author
rimar2000 (author)2013-01-03

This looks wonderful!

author
Bikebudy (author)2012-12-28

Glad to share, you and the kids will love it.

author
Mr.Sanchez (author)2012-12-28

OMFG..This so cool !!Ready in my To do List.Thnx for share.

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