Had to use 2 thrust washers

[2fast4mom]

Took GS to delta for the first time, what a great weekend.

Beached it and tried to swap out 21 High five for the 26 ET, to do some skiiing/wakeboard stuff.

The H5 would scrape the blowout ring area of the sportmaster case a little when it was spun. I guess this means wear at the taper of the propshaft (old school thin shaft) or the thrust washer.

I could not get the thrust washer loose, but I did have a spare thrust washer and slapped it onto the H5 and cinched her down to 60 ft-lbs. The nylock was still holding the nut with only about 1/8" threaded propshaft exposed.

Well I was half expecting to lose the prop and hub, if not break the shaft but she held fine and the weekend was a complete success.

I just wondered if anybody else had run 2 thrust washers, in a pinch like happened to me.

 

[BP]

I once stacked two thrust washers in order to move a Trophy prop further back from the gearcase.
The thinking was it might improve holeshot (it didn't).
No ill effects however.

 

[John Richied]

For speed runs it use to be “the hot tip” to space the prop back stacking thrust washers. It’s suppose to make some props more efficient. Merc also makes a thrust washer that is

 

[Bob Ant]

John,
There may be something to that because when my prop shaft broke I had my prop spaced back to the rear of the shaft.

BobA.

 

[Jimxb02]

I've used a double thrust washer before to get me through a weekend or a vacation , however, it does put additional load on the prop shaft.

My prop shaft broke also but it was in a gear case that had a lot of time on it.

Jim