50% partner money man?

[Jason Guinard]

Hello all. How do you guys feel about a private lender that is willing to lend, and take all $ risk at 50% of back end profit.  He will have no involvement other than money.   He is willing to do this because he knows me well , (from a business standpoint) as a very reliable contractor that I could put a very solid team together.  Looking for feedback on whether 50% is too much, or a good deal being I am not paying back on the loan and cannot loose money?