Haroon,
Keep in mind the personal liability you are placing on yourself. The risk you are placing on others who will use this equipment. You are not trained, qualified, licensed or insured! As an engineer I would think the effort you have put forward to educate yourself would have given you the wisdom to recognize this.
Would you risk the life of your loved ones so recklessly?
I've recommended this to you on another post. Please call an elevator service company...
