1:36 and 3 Blade 25s, Why?
#11
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Mitch:
I have 502 efi magnums in my 35 fountain, with 1.36 gears. I run 23p mirage plus props. I get a little less bite getting up on plane, but I don't hammer the throttles either, so I don't have any problems getting up on top. My midrange is very good. My top end is higher than other 35's with 1.5 gears.
The original thinking when the dealer ordered the boat was to provide an allowance for a supercharger. With 1.5's it was thought he might run out of prop choices. With 1.36's there is plenty of room for prop selection to get the rpm's correct. I never added the superchargers because I wanted to be sure I could turn the key every weekend and have the engines run. They haven't failed me yet.
All this may be meaningless due to the differences in your hull and mine.
Tom
I have 502 efi magnums in my 35 fountain, with 1.36 gears. I run 23p mirage plus props. I get a little less bite getting up on plane, but I don't hammer the throttles either, so I don't have any problems getting up on top. My midrange is very good. My top end is higher than other 35's with 1.5 gears.
The original thinking when the dealer ordered the boat was to provide an allowance for a supercharger. With 1.5's it was thought he might run out of prop choices. With 1.36's there is plenty of room for prop selection to get the rpm's correct. I never added the superchargers because I wanted to be sure I could turn the key every weekend and have the engines run. They haven't failed me yet.
All this may be meaningless due to the differences in your hull and mine.
Tom
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I had a chance tonight to air it out. I saw 5200 rpm and 83 and climbing I backed down at 83. It got there in a hurry too. I think the 25s are good for now, maybe 23s when the temps go up.
#14
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Sounds, damn near, perfect to me
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#15
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Mitch, your boat sounds great! With early Bravo's, the floor of the 1.5 gears was thin and prone to breaking. Some people switched to 1.36's because they were thicker and stronger. On a boat your size, Mirage Plus's are great for top end. The 4 blades will usually give better cruise speed. How fast is your boat at 3500 rpm? Have fun! We'll see you on the west side this summer.
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Originally posted by dyno
Mitch I think the boat had bigger power at one time thus the 1.36's if you go to a 4 blade I think you would need to go to the 1.50's to keep the r's up. I'd sent the 25's to Darrin at Houston and get them labbed. Better yet you can try my labbed 23's right now...they are just sittin on the bench!!
Don
Mitch I think the boat had bigger power at one time thus the 1.36's if you go to a 4 blade I think you would need to go to the 1.50's to keep the r's up. I'd sent the 25's to Darrin at Houston and get them labbed. Better yet you can try my labbed 23's right now...they are just sittin on the bench!!
Don
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Dyno, you are really grasping for straws now I bet this is the biggest power, I called him and he swapped the gears for strenght and speed. I am going to keep them the way they are. It is a little fast at idle but I will get used to it.
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Originally posted by RonS
Bill 272 what kind of speeds are you seeing with the 500hps in your 336?
Bill 272 what kind of speeds are you seeing with the 500hps in your 336?
#20
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AFter riding in it, and hearing that you hit 83 at 5200 rpm's, I wouldn't change a thing Mitch. The 1:36's are stronger gears, and in rough water, with the boat coming out of the water and such, you're better off with those gears.
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