Building A Motorized Bicycle

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Learn About Building A Motorized Bicycle

Are you tired of high gas prices?


Well, the answer may be the Motorized Bicycle.

As far back as 1892 people put motors on bicycles.

With today's 2 stroke and 4 stroke engines you can Expect to get 150 miles per gallon after the initial break in period.

The normal bicycle fuel tank holds 1/2 gallon of gas allowing approx 75 miles per tank full.

Are these engines dependable?

You can expect to get thousands of miles of life out of your engine if you follow a few guidelines:

1. Follow the break in period guidelines - Break in period lasts for the first 4 tanks or 2 gallons of gas.

2. Keep up with routine maintenance on your motorized bike.

3. Don't ride at full throttle often.

4. Use a good quality motorcycle synthetic 2 stroke oil - Mix at a 20:1 ratio or 7oz of oil per 1 gallon of gas.

Decisions you might face.

There are many decisions you will have to make about motorized bicycling.

Do you have a bicycle? If you do, the type of drive that will best suit your current bicycle. Frame mount or rack mount.

Perhaps you do not have a bicycle. You need to decide if you want to buy a completed bicycle/engine combination or purchase a specific style of bicycle and add your own engine to it.

What follows is to help you better understand your options. The advantages and disadvantages of each system and how to get the most enjoyment out of building a motorized bicycle.

Building My Dream Motorized Bicycle

Building my Motorized Bicycle in words and pictures.

I purchased a Micargi Tahiti Bicycle for my dream ride.
You can choose a style that fits your dream.
Here is the Bicycle I chose to begin with.

Micargi Tahiti Stock Beginnings 

Add Motor - Engine of Choice

After reading for a good amount of time and developing the style I was wanting, I chose the frame mounted "Chinese Motor". There are a number of sellers for this engine and you can find a lot of good information, both good and bad about dealers on the Motorized Bicycle Forums listed below in the "Best information about Motorized Bicycles" section.

I got my engine from Bob at Blue Collar Bikes. I have been extremely happy with delivery and follow up from Bob and will do business with him again.

The engine kit comes with everything pictured below and everything you need for a quick, easy installation.

Engine of Choice 

My Dream as a Finished Product

From the humble beginning using a Micargi Tahiti bicycle and adding the motor from Blue Collar Bikes, I have now created my own "Motorized Bicycle."

I changed a couple of the stock items that came with the micargi... Seat and handle bars

I also added a cantilever front brake to the Bicycle. This model bike does not come with a front brake, if you need to stop quickly a front break is gold.

On the engine I added some paint and replaced the mounting studs with allthread 1/4x20 for a little added strength.

Beyond this I decided not to make any changes or additions to the engine as it comes from the factory. I mainly made this decision to test the dependablity as well as get in a little riding time before the rainy season hits.

This winter I will be taking the bike back down and making changes and some customization to the bikes appearance. For now, I am thrilled with the results.
____________________________________________________

Below are three pictures of my project to date

ENGINE CLOSE UP 

COMPLETED RIGHT 

COMPLETED LEFT 

My Motorized Bicycle Review

I have had a huge amount of enjoyment from building a motorized bicycle. I have now ran a tank and a half of gas through the engine.

I have yet to go any place on this bike without people asking me questions and commenting on it. No only the uniqueness of the engine added but the over all look of the bicycle as well.

A half dozen of my friends have also ridden this motorized bicycle and I get the feeling that come spring I will have a good amount of companions zipping around the area with me.

Best information about Motorized Bicycles

Motored Bikes Forum
Motorized Bicycles: Pictures, videos, articles, where to buy, technical help, legal issues, repairs, rides and more!
Bicycle Motor Forum
Motorized bicycle discussion forum. Our topics cover everything from motorized bicycle engine kits, repairs, building and performance for your motorized bicycle. Motorized Bicycle manuals for performance and modification of gas and electric bicycle motors.
Installation Instructions Bicycle Engine
How to install bicycle engine, grubee installation instructions, How to motorize your bicycle, 4-stroke install,
Free advice on how to fix your bicycle
If you ride a Bicycle or a Motorized Bicycle, you will find some great maintenance help. This site has been a great help to me on a number of occasions.

1914 Pope Board Track Racer 

Board Track Racer Build

Early stages of build on the drawing board

The summer has slipped away into memory and I am getting ready to take my motorized bicycle apart. There are a few changes that I planed from the beginning to do and this is the time of the year to do it.

Mean while I have a new project on my drawing board. I want to build a Board Track Racer Style motored bicycle.

Above is a picture of a 1914 pope board track racer and that is the look I am going for. Below there is a picture of a Workman Bicycle that I will be using for the basis of my build.

If you notice the frames are very similar in style

I will need to construct a fuel tank that will fit between the top and bottom cross bars.

I will also need to decide if I want to build another China Girl 2 stroke or go with a 4 stroke Japanese engine this time. There is still plenty of time to decide.

I know that I will not use the sandwich sprocket on this one so the rear hub sprocket is another area that I will be looking into.

That is about where I am at this point and this winter while the rain and snow fall and the wind blows. I can be found sitting by the fire dreaming of my Board Track Racer build

Workman Industrial Bicycle 

Message Board and Guest Book

This is your place to share ideas and experiences. We would love to hear from you.

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Poll: do you prefer

Comparing 2 stroke and 4 Stroke Bicycle Engines

Do you prefer the 2 stroke engines or 4 stroke on your bikes and why do you prefer them?

Here is your opportunity to make your voice, your opinion and your experience heard.

Do You Prefer 2 stroke or 4 stroke engines?

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2 stroke

Ultima113 says:

2-strokes: power,weight; only 3 moving parts per cylinder.

RA

Levente says:

Yeah. 2 stroke are more light weight. Small but powerfull. I know this is noisy and smoky, but for me the power and the weight are the first points. For exsample the Levo motors gas bikes, or the european Trabant car.

harold says:

two strokes the only so much more power for the size

Xman says:

I like 2-stroke engine because they are the best bang for the buck and less expensive. Also there is a company that offers custom decals from flames to dragons to go on both the gas tank and motor for a real customized look! http://www.gtmdecals.com

Don206 says:

2 stroke is faster and more lightweight. i have one, lets ride,

issac says:

i got a 20cc engine and i up graded it so it is 40cc and tomarro im putting it on my bike i want it ti go atleast 40mph

cosmo says:

with at least 8 to 1 compression 32 to 36cc

Jeaniemae says:

I'm not sure what I would choose between the two, but interesting lens.

Jemma says:

2 Stroke every time. For power from a small engine, tunability and reliability you cant beat a two stroke. Mine is a belt drive and makes 34mph top speed from a 32cc piped engine.

Jemma says:

For the application - ie power from limited space and cc's and simplicity of maintainence (with a good quality engine) 2-strokes win hands down. You wont find a 30cc 4-stroke engine putting out up to 4hp! And you can put a tuned pipe on for even more power.
My MB is 32cc piped 2 stroke and will make a top speed of 34mph

DMedley says:

It really depends on your needs and your skills. I began with a 2 stroke engine for simplicity, learning and it fit the style of ride I wanted to create. So for the mechanically inclined beginner, I believe the 2 stroke is the best.

4 stroke

sam says:

4 stoke is better dont need to mix oil and gas

MikeyMoran says:

It would be cool to have one of these!

COUNTRYLUTHIER says:

No mixing for me, thank you!

heehaw says:

i prefer 4 strokes for they do not consume 2T oil and it is less noise polution.

jake hollett says:

4 STROKE! I DONT FEEL LIKE TIGHTENING A RATTLED OFF BOLT EVERY 2 MINS... 4'S ARE QUIET LASTFOREVER AND YOU DONT HAVE TO MESS AROUND WITH MIXING GAS AND OIL! JUST MY 2 CENTS

UKGhostwriter says:

great idea!

Wheels J.R. says:

4strokes rule 4me. 2strokes sound lik bumble bbees on attack.

zbikenut says:

The four stroke is a much more durable and gas efficient engine usually.
Bicycle Hangar of Missoula

zbikenut says:

Four stroke are heavier but will last longer and will need less maintenance.

dogs542 says:

decals don't make em run better or longer

dogs542 says:

decales don't make em run faster or longer!

dogs542 says:

I built a 4-stroke 49cc Hua sung with the 4g belt drive on a schwinn point-beach cruiser frame is sweet and with 4 tanks it runs greaty down the road.

Joshua says:

4 stroke,although I find horsepower to be less You can modify the engine to have more power.And the torque Is better than a 2 stroke.I always have 2 strokes tear up and be a major headache.I am now going with a four stroke because they are more reliable,Get better mileage,longer lifespan.(30,000 minimum)And better built.Not to mention 2 strokes will be banned from the united states after 2010 and very polluting.I don't mind maintenance Issues.But,When you have to rebuild or replace a 2 stroke every 500 to 1000 miles It becomes a hassle and has cost me one job already.

Batman says:

4 stroke is my choice, I find them easier to maintain and start

AndrewTwidwell says:

4 stroke engines are so much more efficient and a whole lot better for air quality.

rex09 says:

ive got a 1994 xr250r and a 1987rm125 i would rather the big xr

rex09 says:

to much work on 2stroke id rather 4

terry says:

whizzer motor is best.

jimmy says:

i prefer 4 stroke cause thats all ive ever had but im sure 2 stroke are just as good

Bill says:

Hua Sheng 49cc

 

Useful Video's about Motorized Bicycles

Here are some great videos from folks that have build their own Motorized Bicycles. These will be of great help if you are thinking about building your own Motor-bicycle
Motorized Bicycle
by only1soe | video info

42 ratings | 135,796 views
curated content from YouTube

Completed Motorized Bicycle from Spooky Tooth 

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Unlimited Hobby Potential

The more I learn about Motorized Bicycles and the more of them I have seen, the more I realize this is an unlimited hobby.

Building Custom cars, restoring cars, building or restoring Motorcycles has become an extremely expensive hobby. Enter the Motorized Bicycle.

If you just want to build a simple vehicle using a bicycle you currently own - your good to go.

If you like to do light customization - your good to go.

If you love to build from the ground up and do full customizations - you are good to go.

There are no limits to what you can do with a bicycle frame and motor combination.

For Your Viewing Enjoyment

Here is a selection of my favorite bicycle movies. So...

Grab Some Popcorn - Sit back and Relax - Watch the Wheels Spin
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Bicycle Tutor

If you ride them - They will break

Here are some great guides to help you repair your bicycle.
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DMedley

I was born in the mountains of Oregon in the middle of the 20th century. As a young man living in a world that had little of the physical distractions... more »

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