Rodney

Sew-Classic sells reproduction handwheels too. If you're not worried about messing up the original wheel you can cut or drill a hole in it to fit the crank. 99s are common enough you're not really hurting anything with the modification. Or buy one to modify from a parts machine so you can convert back later if you want.
Sometimes the spoked wheel is a different diameter where the bobbin winder rides against it making the stock winder not work anymore. It's just something to keep in mind when you switch over.
Rodney

DonnaMiller

Jenny at Sew-Classic.com has received more hand cranks. It takes a while for them to come in, so better order right away. She was very nice and emailed me when they came in so I could get one.

Mrs. SewNSew

I've been watching for them to come in already knowing I wanted to try one. I got mine already!

I started cleaning up a Singer 28 today. It was one I got a few months back and it was frozen solid. It's not a real looker but I think I'll clean it up and give the crank a try. It would be fun to see it actually work.

I'll also work on the 99 so I can try the crank with that too. The spare spoked handwheel I have fits! It's a 9 spoke and the chrome is rusted but I should be able to clean it up. I'll drop it in the Evaporust for starters.

Vridar

I have a 127 and a 115 HC setup. The 127 is so smooth I prefer it for delicate work. The 115 is a clunker for "Dirty" work. I've even used the 115 in a rain shower finishing a pontoon Bimini repair. It seems to have survived without a hitch due to the oilings over the years.

Edit - I might add, the smoothness of 127 is probably due to a Singer crank. The 115 crank is after market and wobbly. Also, the 115 hand wheel is the larger 9 spoke leaving the crank ill fitting.