Introduction: Solar Powered Reverse Trike

Picture of Solar Powered Reverse Trike

Designed and built in just 18 days at the University of Engineering and Technology Lahore in Pakistan,  7 x 3.5 x 4.5 ft (2.13 x 1.06 x 1.37 meter), 132 pound (60 kg) low-rider features a custom built, t-shaped aluminum framework at the front of the vehicle, and the back part of an old bicycle frame at the rear, joined just behind the seating area to shock absorbers. The reverse three-wheeler - with two wheels at the front and one at the rear - also has a 40 watt photovoltaic canopy above the rider that charges the onboard 12v/80Ah dry cell solar battery.

An eco-friendly vehicle that uses solar energy as its source of input. A solar panel is used to charge the battery and the battery drives the dc motor.
Its a vehicle that uses reverse trike configuration, i-e two front wheels and a single wheel on the rear side. Steering is done with the help of front wheels. It also consists of a solar panel, Battery and a dc motor.


Solar Panel
Steering Mechanism
Chain and sprocket mechanism
Charging circuit


Length: 7ft
Width: 3.5ft
Height: 4.5ft
Weight: aprox~ 60kg
Motor: 24Volts DC, 17Amp
Battery: 12Volts, 80AH
Materials: Aluminum, Steel and Cast Iron

Material Quantity Cost (Rupees)
Aluminum Sections
(2’’ x 1’’) 12ft length
2 ...................................................2500
Aluminum Plates 2 .......................500
Steering Parts (hinges) 2 ...........150
Solar Panel 1 .............................12000
DC Motor 1 .................................7500
Battery 1 .....................................8000
Tire set 3 ....................................2400
Brake set 1 ................................100
Iron Plates 7’’ x 4’’ 2 .................300
Iron Plate 3’’ x 3’’ 2 ......................150
U shaped Iron Sections 4 ..........500
Aluminum Sections for Solar Panel length 6.5ft 2 .............600
Sprockets 2 .....................500
Handle 1 ..................100
Seat 1 .......................550
Cycle Chain 1 ..........................400
Chassis Rear Section 1 .....................1000
Nuts bolts washers and miscellaneous - ............2120
Labor Cost - ....................................7300
TOTAL COST - 46670/- Rupees (APPROX ~550 USD)

Please vote for my Instructable (you can see the image for "VOTE NOW!" on the top left of this page)

Step 1: 3D Design of the Vehicle

Picture of 3D Design of the Vehicle

First of all i made the 3D design of the vehicle in Solid Edge v20. Below are the picture of the vehicle.
This was a vital step in fabrication of the vehicle. So without considering any other thing i made the 3D Model of the Vehicle to give a proper look!....

Step 2: Chassis Fabrication

Picture of Chassis Fabrication

After the 3D design of the vehicle was completed i stated the fabrication of the Chassis. I used Aluminum rectangular Sections 2"x1", thickness 2mm for chassis main body. For welding the aluminum rods together i used the Argon welding!..... It took around 4hours to get welded with exact dimensions.

Step 3: Bicycle Rear Section

Picture of Bicycle Rear Section

I used a rear section of the bicyle to hold the rear wheels.... which was later used to drive the vehicle!

Step 4: Front and Rear Chassis Assembly

Picture of Front and Rear Chassis Assembly

Next step was to assemble the fabricated front part of the chassis with the rear section taken from a used bicycle! U-shaped bar was used to hold the parts together!.... then comes the shock absorber which was attached to two angle iron bars....

Step 5: Wheels Mounting

Picture of Wheels Mounting

Next step was to mount the wheels on the vehicle....

Step 6: Steering Mechanism

Picture of Steering Mechanism

Since this a reverse trike so front two tires were to be used for steering ...... so i used T-joint mechanism to steer the wheels!....

Step 7: Motor and Battery Placing

Picture of Motor and Battery Placing

A small frame was made to support both the motor and the battery, using angle irons....

Step 8: Solar Panel Mounting

Picture of Solar Panel Mounting

To mount the solar panel on the top of the vehicle a frame was to be designed as in 3D model.... so finally it was welded on the base of the chassis

Step 9: Charge Controller Circuit Diagram

Picture of Charge Controller Circuit Diagram

Purpose of the charge controller circuit is to cutoff the supply from the solar panel when the battery is fully charged to avoid over charging... and to start charging when battery voltage drops off a certain value... in my case the max. allowed voltage is 13.7volts and min is 13volts.

Step 10: Solaron! Ready in ~550USD "RESULTS"

Picture of Solaron! Ready in ~550USD "RESULTS"

And finally an other addition to Green Technology! and after series of experiments i conclude the following results


1. It can go upto 30kmph max. speed.
2. Covers a max distance of 70km in one full charge (without panel)
3. No air and sound pollution.
4. Renewable energy source, no external power required.
5. Automatically charges the battery.

Please vote for my Instructable (you can see the image for "VOTE NOW!" on the top left of this page) and also share with others.....hope you enjoyed reading it as much as i enjoyed making it...
Farrukh Khan
B.Sc Mechanical Engineer
University of Engineering and Technology Lahore Pakistan

If you are planning to built your own and you need any kind of information, contact me at: +92-322-4710671


shubham mahajan (author)2016-09-27

can anyone plz share me the full circuit diagram of it to

paulfranklin (author)2016-06-07

Wow wonderful design. Please send me the full circuit to

Do you have full circuit diagram of it?

Jamal Bukhari (author)2016-09-05

I need the speed controller circuit diagram can you send me please

amurillo3 (author)2016-05-25


paintphone (author)2016-01-05

I want to make one !!!

Rowster09 (author)2015-11-29

so! cool!

defrancis1956 (author)2015-06-15

How much weight can this move?

luiz.brasil.2013 (author)2015-02-02

Hi !

I´m very interested on aqcquiring the instruction plans of this vehicle and would thank very much who inform me about it.

Thanks !


jrlavina (author)2015-01-24

great job. :) will you send the charge controller circuit diagram and all the details in thank you very much :)

amanga jeki (author)2014-11-03

hie great stuff,am doing almost similar project........can you send me charge controller circuit design at

rashaism (author)2014-09-04

thank you for this wonderfull project

djmelvinv (author)2014-05-17

hi nice project. I was wondering about the acceleration. isnit just on of or and accelkeration control?

RAVIRAJ243 (author)2014-05-10

will you send mi 5 watt 6volt solar charger controlar on my mail id?

my mail id

RAVIRAJ243 (author)2014-05-10

will you send mi 5 watt 6volt solar charger controlar on my mail id?

my mail id

Joel Ulrich (author)2014-04-30

Hi! Nice job. Can you please also send me the charge controller circuit diagram. I want to do something similar with a li-ion battery for an electric car project.

there is my e-mail:


lhillyard (author)2011-08-24

Wow very impressive. i work at a machine shop and i want to build something like this. I didnt see any details on your controller though. care to enlighten me?

The Mak3rs (author)lhillyard2011-08-25

thanks you so much .... well i just bought it from the local electronic store... its called "Charge Regulator or controller" also called "Cut-off circuit" well it consists of a relay and resistors and IC (dont know the specs) but its purpose is to cutt-off the supply from the Solar panel when batteries are fully charged in my case utt-off voltage was 13.9 Volts

hotshot_87 (author)The Mak3rs2014-02-28

What is amperage of the relay in the Charge Regulator.

upevnz (author)The Mak3rs2012-05-05

IC may be 8 PIN DIP 555 Timer IC.

naveen raj (author)2014-02-19

hi., i want to full details of motor for this projectt., our mail id is,

vanadium chrome (author)2011-08-25


ok firstly i would like to ask you where are you from?... secondly its 30kmph not mph.... and lastly no it does not have a speed-o-meter, yet we can measure its speed!... HOW?.... well we had motor bikes which traveled along with the vehicle .... and they had speedometer!... hope you understand the rest .... cheers

amy4204 (author)The Mak3rs2014-01-29

please give the correct info because it is not possible to run a 24 volt DC motor with a 12 volt battery

Phoghat (author)The Mak3rs2011-08-30

You tell him ! God, some people....

raza896 (author)2014-01-12

AOA. Great effort farrukh. Im also from UET but in Computer Science department. Nice to see your work on this website.. Going to rate your work. But please answer that how a 12 volt battery controll a 24 v motor???

vivek27 (author)2014-01-07

will you please send the circuit diagram of 40 watt solar panel charge controller?? my mail id

sajidsalman (author)2013-09-17

farrukh i wanna ask a question which is......if the batrry charg is going down so it affect the speed of the trike or not.....means that if charge is low will it speed be slow and vice versa plz guide me......

dbonaire (author)2011-08-05

Excellent work farrukh!! Very good work here!!

The Mak3rs (author)dbonaire2011-08-05

thanks you so much dbonaire :)

amy4204 (author)The Mak3rs2013-09-13

Hi! A0a. Farukh i tried the number that you gave. its off. can i contact u in any way. my number is 0333-6670140. i need to talk to you about this project. My name is Aamir

malik rizwan (author)2013-06-20

hi farrukh nic projct plz let m inform which components is used in this??

wasimsohail (author)2013-05-04

Nice Work farrukh, Pakistan needs Man like you. With 40 Watt Solar panel, 80Ah battery achieving 30mph and covering 70km seems awesome. Keep it up.
I want to be your fan, what's your fb ID.

devratana (author)2012-11-04

great job dude.......
but i want to ask some questions :-
1. It is possible to run a 24v dc motor with a 12v battery?
2. How much torque is produced by ur motor and at what rpm?
3. weight of your vehicle?

grambo5301 (author)2012-10-25

Does anybody have any ideas for the motor?

gavindusl (author)2012-10-13

Hi. where i can find this charger controller circuit ?

gavindusl (author)2012-10-06

Dear friend where i can locate the circuit diagram or where i can but the PCB ??

amitgupta001 (author)2012-09-30

Hi Farrukh,

1. If we want to use the same technology and use it as rickshaw / cart to carry construction material, or vegetables, or waste material, how much weight it can carry with present battery.

2. Suppose if we want to carry material of 250-300kg as solar powered rickshaw.

3. Incase during winter or rainy days, when no solar energy, can we charge the battery through electricity (as as back-up charge). Some solar water heaters come up with both option, solar charge & water can be heated through electric connection also.


ritik23 (author)2012-09-19

ossum project..
excellent...kep it up..:)
hey can you please send me solar panel specifications
to my email

ritik23 (author)2012-09-19

hey can you plz tell the solar panel specs
to my email

peluso (author)2012-07-26

Excellent project, very simple and relatively easy to build, I congratulate you, the world needs people like you.

SafeArmsReview (author)2012-05-05

Very cool! Congrats! I am looking to make a trike that uses a scooter motor. Keep up the good work. Steve

lokhande (author)2012-02-28

Very Good Farukh, i like your idea Good Luck.

Jbeaubrun (author)2011-11-01

Why did you use a 12V battery for a 24V motor?

akumar62 (author)2011-08-08

Hi farrukh,
It was a pleasure to know about the project. Actually i was working on the same lines for some months. Now can you please tell me in detail how did you decide the pv pannel specifications n the battery. please mail the calculations to my email id

The Mak3rs (author)akumar622011-08-09

thank you so much for the interest Ashish... but i have already provided enough information ... by which anyone can make there own vehicle like this... i can't give you more details and calculations as they are confidential...! Hope you understand.... thanks anyways

jdsojopgjfg (author)The Mak3rs2011-10-08

Hi farrukh,
It was a pleasure to know about the project. Actually i was working on the same lines for some months. Now can you please tell me in detail how did you decide the pv pannel specifications n the battery. please mail the calculations to my email id

firepup104 (author)2011-09-23

Great job, but how do you stop it

j.h.patel05 (author)2011-09-17

i did not found any content or discription about motor so please will you tell me its detail.

dorybob (author)2011-09-14

Cool build and congratulations on winning the Green Challenge.

About This Instructable




Bio: "The Mak3rs (Pvt.) Limited". A leading company Solar Energy systems and in 3D designing, scanning, prototyping and printing services in Pakistan. A company established in ... More »
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