Casale gear experts here

[jetboatperformance]

Every once in a while in a weak moment I take a V drive box for overhaul , this boat was an Old Circle racer , runs off the crank snout , found the gears broken up on the lower gear suspect these are LH gears in a RH application

 

[monkeyswrench]

Wow, a rarity!
A picture I can see, smell and hear

That went beyond "crunchy" to "extra-crunchy"

 

[wzuber]

Only the bottom gears were damaged? That oil looks pretty nasty so maybe a combination of things including heat, probably damaged morso by incorrect gear lash. The way the teeth are broken it appears maybe the gears were improperly shimmed too? You can run left hand gears in a right hand box as long as the lash is sufficient. They may be a little more noisy but with quality lubrication and proper setup they will work. What class of circle race boat was this in?

 

[jetboatperformance]

Only the bottom gears were damaged? That oil looks pretty nasty so maybe a combination of things including heat, probably damaged morso by incorrect gear lash. The way the teeth are broken it appears maybe the gears were improperly shimmed too? You can run left hand gears in a right hand box as long as the lash is sufficient. They may be a little more noisy but with quality lubrication and proper setup they will work. What class of circle race boat was this in?

The setup was wierd for sure , funny part is the owner says It sounded OK Wzuber I dont know I'll see if I have a photo

 

[COCA COLA COWBOY]

That's incredible! When my dad ran a BAF with a 1 inch shaft he would twist and break shafts quite often....never seen teeth destroyed. Circle is definitely a different turn than drag so I bet your 100% right on having the wrong gear set.

 

[monkeyswrench]

The setup was wierd for sure , funny part is the owner says It sounded OK

It was being run like that?! I thought that's why it showed up

 

[jetboatperformance]

It was being run like that?! I thought that's why it showed up

Nice Kid , pretty Boat savvy He had just bought the boat and had a small amount of seat time but He like Us were amazed it worked , Josh (my Son) found an article the addresses this (Left gears running backwards) says clearances are greater I'll find it and post it here

 

[jetboatperformance]

Only the bottom gears were damaged? That oil looks pretty nasty so maybe a combination of things including heat, probably damaged morso by incorrect gear lash. The way the teeth are broken it appears maybe the gears were improperly shimmed too? You can run left hand gears in a right hand box as long as the lash is sufficient. They may be a little more noisy but with quality lubrication and proper setup they will work. What class of circle race boat was this in?

This is the boat , dont know much more

 

[bonesfab]

My c500 broke a few teeth off a set of 25 gears. Improper set up caused them to wear thin and then they were methed up. Rebuilt my self but am scared to take it out.

 

[Clank123]

Only the bottom gears were damaged? That oil looks pretty nasty so maybe a combination of things including heat, probably damaged morso by incorrect gear lash. The way the teeth are broken it appears maybe the gears were improperly shimmed too? You can run left hand gears in a right hand box as long as the lash is sufficient. They may be a little more noisy but with quality lubrication and proper setup they will work. What class of circle race boat was this in?

I think you hit the nail on the head.
“Quality Lubrication”
I’ve only seen one other set like this and it happened because the gear oil was totally water contaminated.
Mark all the spacers when you take it apart and check the gear lineup when you put it back together.
I have 50-60 spacers of different widths that can be machined to make it right.
I’ll bet that box has been together for a long long time.
Also, the gears will be stamped LH or RH on the side with the ratio stamp.

 

[jetboatperformance]

I think you hit the nail on the head.
“Quality Lubrication”
I’ve only seen one other set like this and it happened because the gear oil was totally water contaminated.
Mark all the spacers when you take it apart and check the gear lineup when you put it back together.
I have 50-60 spacers of different widths that can be machined to make it right.
I’ll bet that box has been together for a long long time.
Also, the gears will be stamped LH or RH on the side with the ratio stamp.

Probably a dozen theories, but likely I feel the fact that use left-hand ears in a right hand application probably didn’t help. They claimed it when you do that you have to put extra clearance in them. There’s a bunch of weird shim in these things I used to do them on a regular basis until Andy Casale cut everybody’s discount and once that happened I went strictly to jet boats and gave up on the drives, yes on the spacers we pay attention. Those kinda all bets are off in this deal because it’s such a mess. Thanks for the input.

 

[4Waters]

My c500 broke a few teeth off a set of 25 gears. Improper set up caused them to wear thin and then they were methed up. Rebuilt my self but am scared to take it out.

I destroyed a set of upper gears in my bravo, I could afford the gears but not the install so I bought a couple books, a couple tools, made a couple tools and rebuilt it myself. It now has over 200hrs on the rebuild, I think I did good

 

[Dana757]

I always had LH gears in the Revenge.

 

[DC-88]

Are , or were the gears correct degree for the v drive 10vs12? I’ve ran LH in my RH setup occasionally with no issues I was always told it robs a small amount of HP .

 

[coolchange]

My c500 broke a few teeth off a set of 25 gears. Improper set up caused them to wear thin and then they were methed up. Rebuilt my self but am scared to take it out.

If you can set up a R&P you can do a v drive.
I helped a friend with his gn style 19’.
He had a circle racer ( not v drive) friend change the gears in his box. 32 to 22 think it was. ( blown boat to TR). Took it out and he said “ I told you 22s were wrong.”
I drove it and was “this ain’t right, gears are in backwards?”
No way he says.
Took it home, sure as shit, up side down. 22 under!
Another box in a tr2 got so hot you couldn’t touch it. Like water splashes on it would sizzle. If it’s wrong you’ll know it.

 

[HNL2LHC]

Those teeth are methed up!!!