i had a similiar problem with my marvel striped. it was my biggest and healthiest looking plant with a ton of blossoms but one of the last to have fruitset. even plants 1/2 the size had multiple fruit and marvel striped had none.

i would shake it everyday. it was in the "prine" location in my garden. one morning out of frustration i went out with a q-tip and just swabbed each blossom. i don't know if it helped or not or if i just had to be a little more patient but now i have a ton of little toms on my marvel striped.

i just took some pics but have not downloaded them from my camera but hope to in a few hours...i'll post on my blog below.

Here is a link that might be useful: marvel striped beefsteaks

Brandywine has never been known as a good producer and it is a very late season variety. But most put up with its low production problems because of the taste.

So it is your choice as to wait or replace but skip the hormone sprays. See recent discussion on them just a bit further down the page. Or check out the FAQ here on blossom drop.

Dave

You have a rather large plant not to have any fruit setting on. I recall reading in "Organic Gardening" some years ago about tomatos not setting on. As crazy as it seems, they recommended taking a cane and whipping the tops of the plant. They said that the growth was going to the vine and the whipping halts that and will be redirected to producing fruit. Good luck!