Common in RVs. I have used the PC-680(?) but with a wood prop in an O-360 engine it was not perfect in starting. It often stopped on a compression stroke. Let off the starter..wait a moment then start and it was fine.
I recently installed a PC-925 and it spins the prop perfectly. It weighs about 10 pounds more than the PC-680 but it has "more power." Ron Lee
