Unfortunately i dont have any measurements on top of my head
Depends on wich specimen you are looking for?
The best thing you can do is to download the official abstracts / descriptions of these specimens.
And Scott Hartman have very accurate good reconstructions and you also have Franoys a graudated paloentologist here on Deviant Art who makes alot of skeletal reconstruction he might have some information about these forelimbs.
For the forelimbs alone i assume you talking about the humerus /sternum /radius.
Carpenter released a paper many years ago in regards of locomotion but i dont remember the exact measurement for the specific specimen but here is the paper
www.researchgate.net/publicati…Keep in mind that these forelimbs are very scarce and disarticulated. FMNH 2081 (Sue) and More 555 (Wankel) is for now the only "almost complete" we have and the rest is at best reconstructed material.
And for the future Thomas Carr is coming out with a book wich will offer great insight in regards of measurements of each bones.
Hope this will help you.