A kart with a roll bar requires some addtional functionalty for the driver , whislt piloting the kart.
The outcome is to project a ball or cylinder (approx 2KGS) forward , with enough force to push it about 10 meters in under a second . No electrical or pnematic power - the design must be simple (levers and springs is my thinking
This simple mechanism should be mounted on the underside of the kart rollbar to activate a bar mounted at the front to push the object and return back to original loading position again. The bar needs to be activated by a child without too much power required
I have attached some really badly drawn pictures of the basic premise - Im sorry about the quality - the wooden bar is my poor attempt to mock up a design - clearly not my skill.
The project is to design a mechanism that meets those needs , and uses parts that i can buy from a hardware store
If i can think of anything else i'll post it , but happy to field questions for those people who know about these things
29 freelanceria on tarjonnut keskimäärin 461 $ tähän työhön
hi friend >>>>>well experienced and professional >>>>>>>i have full manufacturing setup also >>>>>>>>>>>>>>>>>>>>>.please discuss 
Hi, Can you share more details about your project? I have done similar project and understood the project outline. Please give me a chance. A trial will convince you. Looking forward to work with you.
May I send samples of my previous work? I am already thinking of how to do the first draft, so that we can discuss the details. Kindly reply and I shall send you the samples of my previous work. Thanks