RE: Top-Flite 1/5th F4U Corsair ARF Group Build and modification thread
I assume you meant firewall to prop hub. On the G-62 I have mounted, It's about 7-3/8". But keep in mind these measurements that some are asking for are not set in stone as they will vary depending on type of engine, mounting setups, muffler types, how one glues in the mounting ring of the cowl and mounts the dummy engine in the cowl. I try to keep the prop hub and dummy engine sticking out of the cowl in a scale distance. I also have my cowl mounted alittle further out than the instructions show.
The real trick is to mount the cowl straight with the fuse and get the engine mounted so the hub is centered in the cowl with the required off sets.