How to check what gears in my Casale Split Case V-Drive

[Chris Lapoint]

Need some help, I've seen a couple of older post and methods to find out what gears might be in a V-Drive, it's a C-500 making checking them a pain.

What I've read is to mark the input & output shafts @ 12 o'clock spin the input shaft 10 times, while also counting the output (prop) shaft rotation and then divide by 10.

If people could please post "your" best method of checking below it would be greatly appreciated.

Thanks!

 

[wsuwrhr]

Mark top and bottom flange. Rotate and count the turns until the marks line up perfectly again. easy.

Report back how many turns it took.

 

[wsuwrhr]

I cant even get my head around that.....

What I've read is to mark the input & output shafts @ 12 o'clock spin the input shaft 10 times, while also counting the output (prop) shaft rotation and then divide by 10.

 

[Chris Lapoint]

I cant even get my head around that.....

I know! Lol that was why I posted, I assumed their had to be an easier way
Only turning the input one time would be hard to tell since gears are typically only 3% spreads apart and by "eyeballing it it might be hard to tell if it was 12's or 15's (25's would be easy)

 

[oldschool]

You could spend a couple grand and completely rebuild it with new gears(not recommended), OR follow the procedure you described. Sometimes it's stamped on the case. I have a couple other recommendations and things to look for on the C500.

 

[wsuwrhr]

Mine took 25 turns for the marks to line back up.

1/25=.04 4% underdrive.

 

[wsuwrhr]

Turn the shaft until the marks line back up, count the rotations of the top shaft it takes to do that.

I know! Lol that was why I posted, I assumed their had to be an easier way
Only turning the input one time would be hard to tell since gears are typically only 3% spreads apart and by "eyeballing it it might be hard to tell if it was 12's or 15's (25's would be easy)

 

[oldschool]

Mine took 25 turns for the marks to line back up.

1/25=.04 4% underdrive.

Is that what it is? Or questioning that #.

 

[wsuwrhr]

That what is in UCH's C500.

Is that what it is? Or questioning that #.

 

[oldschool]

Turn the shaft until the marks line back up, count the rotations of the top shaft it takes to do that.

I think I have the procedure written down somewhere, came from Andy Casale.

 

[Chris Lapoint]

You could spend a couple grand and completely rebuild it with new gears(not recommended), OR follow the procedure you described. Sometimes it's stamped on the case. I have a couple other recommendations and things to look for on the C500.

Everything "should" be in good working order, but no one knows exactly what gears are in it - I want something to go from when I am figuring out the boat. (RPM / Prop / Prop Slip / MPH Etc.) All of which I have to know the gear thats in it.

 

[oldschool]

That what is in UCH's C500.

Ok, so that method works.

 

[wsuwrhr]

No idea, its a gearbox. It isn't that smart to know its a Casale.

Ok, so that method works.

 

[oldschool]

Everything "should" be in good working order, but no one knows exactly what gears are in it - I want something to go from when I am figuring out the boat. (RPM / Prop / Prop Slip / MPH Etc.) All of which I have to know the gear thats in it.

Gotcha. Is it braced? Also take a close look at the output flange, if the unit isn't or wasn't brace at some point it can wear . When that happens the prop shaft is sloppy in there and the set screws( only thing keeping it in the flange ) get loose. I had this issue and had the prop shaft come out of the flange when I got off the throttle, we stopped REALLY quickly. The safety collar on the prop shaft kept the prop from hitting the rudder. I ended up gun drilling/threading the prop shaft and bolting it to the out put flange.

 

[wsuwrhr]

Top shaft went 25 turns, bottom shaft 24 turns.

24/25=.96

Ok, so that method works.

 

[Wheeler]

slap a degree wheel on the damn thing give it a spin then do the math. If you ain't got a degree wheel, print one out.

 

[wsuwrhr]

slap a degree wheel on the damn thing give it a spin then do the math. If you ain't got a degree wheel, print one out.

A degree wheel?

You guys give a gearbox waaaaay too much credit.

 

[Wheeler]

A degree wheel?

You guys give a gearbox waaaaay too much credit.

Just for you Brian and only for you.

 

[wsuwrhr]

Im enjoying this years climate change so far.....Keep the temps in the 70-80s. Im good with that.

Just for you Brian and only for you.

View attachment 761959

 

[Hydroman55]

Just for you Brian and only for you.

View attachment 761959

I normally don't chime in on stuff but this is funny shit right here!

 

[oldschool]

Just for you Brian and only for you.

View attachment 761959

72.5% overdrive, holy shit.

 

[cpdad93]

Top shaft went 25 turns, bottom shaft 24 turns.

25/24=1.04

.96

 

[wsuwrhr]

.96

Yea fucked that up a bit.

Either way, my gears suck.

 

[oldschool]

Yea fucked that up a bit.

Either way, my gears suck.

When you bolt that 14-71 on top you'll need to find(or make)some 32's for that box.

 

[cpdad93]

Yea fucked that up a bit.

Either way, my gears suck.

do they swap top to bottom.....that would seem to at least increase you by 8% from what you have.

 

[oldschool]

here's what happens when they get REALLY hot.

 

[wsuwrhr]

That is the xaaaaaact plan.

do they swap top to bottom.....that would seem to at least increase you by 8% from what you have.

 

[coolchange]

Your choices are going to be 4,11 ,15 and 20. Guessing it's a cruiser its not going to pull more gear than that.
Use a pointer, measure the circumference of your output flange in millimeters. See how many millimeters it goes past the pointer. Divided into total for percentage.
I think four would be obvious, as would 20. 11 to 15 would need measuring.

 

[wsuwrhr]

I don't think that day will ever come to need a 30 gear, but if it does, Ill put either a Steveo143 or a Menkens billet split case in it at that point anyway and just be done with that POS.

When you bolt that 14-71 on top you'll need to find(or make)some 32's for that box.

 

[cpdad93]

The casale I had, had the ratio engraved right on it. The Crusader I have now has it engraved on it also. I realized they could have been changed but both were correct on mine.

 

[Chris Lapoint]

Well I happily discovered that the boat actually has a split case Casale not a C-500, here’s a picture of where it stopped. I spun the input shaft 10 full turns and it appears the output shaft turns almost 12.5 times.
What do y’all think?! 25’s?

 

[wsuwrhr]

I guess you will have to wait for the 10 turn guys to answer.

Well I happily discovered that the boat actually has a split case Casale not a C-500, here’s a picture of where it stopped. I spun the input shaft 10 full turns and it appears the output shaft turns almost 12.5 times.
What do y’all think?! 25’s?

View attachment 763646

 

[wsuwrhr]

The split case is certainly good news though.

 

[Chris Lapoint]

I guess you will have to wait for the 10 turn guys to answer.

Yeah, tonight I will do "1" full turn and see where it lands to back up the "10" turn results - if 25's it will be easy to tell, I just ran out of time this morning before work.

 

[oldschool]

Well I happily discovered that the boat actually has a split case Casale not a C-500, here’s a picture of where it stopped. I spun the input shaft 10 full turns and it appears the output shaft turns almost 12.5 times.
What do y’all think?! 25’s?

View attachment 763646

That's what my fuzzy math says. You could open it up and take a look as well, might be good to KNOW you have fresh oil in it.

 

[Wheeler]

this might come in handy for you or for others.

 

[wsuwrhr]

Could be 22 27 29 32...



Im dying over here.....

Fucking people....


Brian

Yeah, tonight I will do "1" full turn and see where it lands to back up the "10" turn results - if 25's it will be easy to tell, I just ran out of time this morning before work.