Lemme see if I get this right. Your looking for someone to pay YOU for helping you build a sim.
Uuh huh....ok...Yea right
Seems to me that if someone were to want my help in building something that either they would have to pay ME. Or accept signing a iron clad contract that my help free of current charge would be repaid to me in the form of a cut or percentage on the product if and when it comes to fruition.
In short. My labor and advise would be the investment. After all. I'd be sacrificing my time to help that person out. My time using my labor, knowledge and expertise can have a value placed on it. In short I work to get paid. I dont pay to work.