Jerry's Hovercraft Page
The new lift engine works great, I have to throttle right back
on the lift or I get too much spray.
I took the craft with us for holidays in the Shuswap in British Columbia,
Canada, and I had a lot of fun on the
Shuswap river, I learned to do 360's, and had a great time,... until....
I was on the Shuswap lake near Salmon Arm,. I was cruising along the
shoreline, there was a big noise,...
and there was my prop in pieces, with bits strewn over the water.
Talk about disappointment, I had a spare prop, but engine shaft broke
so there was no way to fix it until I got home 10 long days later.
Here you can see the damaged prop, along with the missing duct support
just to the left of the prop.
The guard and duct did their intended job of containing the damage,
as the prop did not leave the duct.
( I propped it up in front for the picture)
This shows where the prop tore through the support and broke off the
Looking forward from the back, you can see where the prop tore a hunk
out of the duct.
The end of all my fun!
My theory is:
I have purchased a crank with a 1" shaft, and I am underway with
my craft repairs.
the engine shaft was too small, only 3/4" The shaft is bored out
for a centre bolt, and where it is keyed, I believe the metal to be only
about 1/8" thick.
The key (square metal strip) was slightly too big. I think the pressure
from the H-1 bushing may have initiated a crack.
The obvious: I didn't balance the prop well enough, but I didn't think
it felt that rough
I am anxious to get back on the water.
Comments or questions
page 1 | UH-6F
page 2 | Hull
and Lift Duct | Deck
and Cockpit | Thrust
Duct , Props and Fans | Finished