It's not just my financing; it's your financing as well. I suppose you're more than welcome to have a stake in something worth nothing, of your own volition.
>"but let's not hassle with it now"
You're going to have a hell of time proving your case then, aren't you? Unless, of course, you can prove to the arbiter that you've done the work that is deemed sufficient for the stake you're claiming you deserve. In which case, I guess I shouldn't really have an issue giving you that share. Working as intended?
I'll throw one at you: we agree you take a "little equity", say, 2%. You do an assload of work for me, and I imply on occasion that I'll up your stake, but never actually do. Then I sell the company for billions. You're going to be pretty happy that you just might have a case that you deserve more than you got, in spite of our contract.