22 gears

[SANGER-RICH]

Anyone have a set I need to move up in gears I'm pushing to many rpms 6500 to get at 93.5 on basically a stock motor, and I know a person at cfw that knows how to change them if he shows up at pcr. Rhino??:D :D

[sc fab 1]

what do u have to trade? looking for 18's or 15's and which degree is it?

[beaverfab]

Sanger-Rich I ran your numbers and if you are using a 16 pitch prop with 18's your slip is 19.6% if you change to 22's you will drop around 300 rpm. With the same slip you will only run 92.1 mph. I would not change gear. Just my .02$ If you want to change gear I have several sets of 22's I exchange for $50.00 plus shipping. thanks j.j.

[Sangster]

Rich.. What Prop are you running..2 or 3 Blade.. I would suggest a 3 blade if your not using one..And remember, it's about how quick you are...With that comes the speed...........:) :) :)

[dossangers]

Im thinking uping it to 29's and a 400 shot of NITROUS!!!!!!!!!!!:D :D

[Morg]

Im thinking uping it to 29's and a 400 shot of NITROUS!!!!!!!!!!!:D :D
maybe injection with nitrous:D :D :D

[SANGER-RICH]

Sanger-Rich I ran your numbers and if you are using a 16 pitch prop with 18's your slip is 19.6% if you change to 22's you will drop around 300 rpm. With the same slip you will only run 92.1 mph. I would not change gear. Just my .02$ If you want to change gear I have several sets of 22's I exchange for $50.00 plus shipping. thanks j.j.
Im Running about 525 to 550 hp, 12 degree casal, 11 1/2 X 17 cleaver 2 blade, what does this tell you

[dossangers]

You need MORE HORSEPOWER i think your at the limit with what you have.Thats a heavy boat i ran my hydro with ls7 injected 29 gears at about 8500-9000 grand with the Juice without 8000-8300 ! Put on a blower and put it on methanol you will love it!!!!!:D :D

[beaverfab]

What gears are you runing?

[Sangster]

S.R....Talk to J. Shelfo about the 3 blade cleavers..BTW, He runs a 4 blade cleaver on the "Sucker Punch" Hydro! :eek:

[SANGER-RICH]

What gears are you runing?
15,s

[469 the coyote]

We have about 550 to 600 HP in my moms hydro with one of shelfo 11-16 3 blade props ( Witch works great) and it runs about 7200(22 gear) to 7700 (15 gear) and is 97-103mph in the 1/4. I would say put a smaller prop on it.

[beaverfab]

23.4% slip, I would try some other prop, see if some one a CFW has a prop that you can try. I feel you could get you prop slippage down to around 15 to 20% if you get to 20% you will pick up 5 mph. 18% and your 98 mph. Just my .02$ If I can help let me know. Thanks j.j.

[SANGER-RICH]

23.4% slip, I would try some other prop, see if some one a CFW has a prop that you can try. I feel you could get you prop slippage down to around 15 to 20% if you get to 20% you will pick up 5 mph. 18% and your 98 mph. Just my .02$ If I can help let me know. Thanks j.j.
I have no prop slippage now it bites right now and the bow is in the air [look at picture below] and I'm not stabbing it to the floor, I want to get my rpms down and my top end up at the end [looking to get to 110mph] and trying to save my motor, do you think 18s would work better??

["The Bandit"]

HI RICH. i like the idea of agear change. ill be at PC and glad to help!! #530 633 9055 ANDY.

[707-CREW]

Are you guys talking about putah creek at berryessa when you say pc???

[469 the coyote]

The gears change is only going to make it bite more and will slow you down. The prop spin will give you more rpm down low but not up top. Also your motor needs more power to get to110 mph. 6500 rpms are not a lot. Motor should live a long life.

[RhinoWood]

Anyone have a set I need to move up in gears I'm pushing to many rpms 6500 to get at 93.5 on basically a stock motor, and I know a person at cfw that knows how to change them if he shows up at pcr. Rhino??:D :D
:confused: Shoot... rich, I'd enjoy giving you a hand with a gear change,
but I am already committed to another boat-outing. I have to fly all the
way up to Anchorage to get a ride. I heard this boat is bad-a$$, it has 3
or 4 pissed off deisels in it, and once you commit you can't get out for 10 days or so.:D I wonder what the prop slippage would be on this deal:idea:
Naw, just messen, have to go on a little cruise, leave the 4th return the
17th. I know I'm gonna miss a good trip w/ you guys, we'll git-er-done
next time.
Have fun, be safe.....Matt

[Carnivalride]

I have no prop slippage now it bites right now and the bow is in the air [look at picture below] and I'm not stabbing it to the floor, I want to get my rpms down and my top end up at the end [looking to get to 110mph] and trying to save my motor, do you think 18s would work better??
Sorry all boats have prop slipage, just because you bite well enough to carry the nose and accelerate hard does not mean your prop isn't slipping. A prop in the water is not like tires on pavement even the best pro racers have prop slipage just ask them.
if your turning 6500rpm with 15's and 15p prop no slip is 106.3mph so 93.5mph is 12.1% slip
if your turning 6500rpm with 15's and 16p prop no slip is 113.4mph so 93.5mph is 17.6% slip
the formula is: engine rpm x gear ratio /(1056/prop pitch) = theoritical mph

[beaverfab]

Give me a call 972-438-2277 . Like Carnivalride said all props slip. If your prop was not slipping your speed would be 120.33 mph. 6500rpm X 1.15 [gear] X 17'' [ pitch of prop ] x 60 [minutes in a hour] divided by 12 [ inches per foot] divided by 5280 [ feet per mile] = mph with no slip. I think your gears are ok but your prop is slipping to much. But if you can try a set of 18's try them. But if you can pull them to your 6500 rpm you will only pick up 3 mph. If you car lower your slippage 5% you pick up 5 mph. Now your up to .04$ thanks j.j. :idea:

[Sangster]

Rich..A different Prop & alittle NOS will help your deal.. I question your HP rating & setup... For your boat to run properly it needs to have the setup checked & corrected for your HP which needs to be increased..NOS is the cheapest way to up your HP..If you are not lifting the tail of the boat you have something wrong with the setup asusming you have the HP you claim.. Running at the lake it's hard to tell because you don't know what point in the pass your boat is doing what??? I see alot of boats that run triple didgets at the lake, but it takes a Half mile to do it..These are usually the boats that run into problems at the lake as that much good water is hard to find. You want to have your boat run 100+ in the 1/8 mile..With your boat it can be done, but there is a process and it starts with "More Time & More Money".. Many here can help you but you need to get a plan on where you are going with your setup & how you want to run your boat i.e. lake/race and stick to it.. Sounds like you want to run at the lake where most races are won in the 1/8 mile.. That's Cool, set it up to do that and you will see goal alot quicker..Remember Rich...110 in an 1/8 is better that 110 in the 1/4

[mfrey]

I always try to find someone that has a set up similar to mine...then ask them what they do. That way I can benefit from their experience and not "experiment" with my money. I would recommend asking someone with a similar hull etc.!
Ok, Ok, I'll quit being a smartass. Rich, you will not go 110 and et where you want with 525 hp. Sorry. Sangster is right...it's all about how quick you get there. Here's my best numbers with a lot of expimenting:
Same hull as yours. Same motor. 18% gears with three blade cleaver 11 1/2 x 16 = 94 mph / 11.10 et.
Same set up with engine rebuild and dyno at 610hp: 105mph @ 10.22
Same set up with a 11 1/2 x 16 two blade cleaver: 105 mph @ 10.23
mid et slower so I put my 3 blade back on
Same set up with Brodix aluminum heads (added 75hp): 108mph@ 9.73
Same set up with new Dart intake manifold (probably good for 15-20 hp) and Shelfo cut down prop to 11 1/8: 109mph @ 9.69 and into rev limiter at 7700rpm
Same set up with 22% gears: 111mph @ 9.61
Same set up with 25% gears: 110mph @ 9.83
Rich, I think the only real set up difference between mine and yours is the plates on my strut, which with the 3 blade is now slowing me down by pushing the nose down. It was ok before the latest changes. That's why I want to try your 2 blade to help carry the bow.
I think you should try my 3 blade with 18% gears. You won't gain much but should kick the tail quicker.

[LandSpeedRacer]

"I always try to find someone that has a set up similar to mine...then ask them what they do. That way I can benefit from their experience and not "experiment" with my money. I would recommend asking someone with a similar hull etc.!"
Very well said:idea: :idea: :idea:

[SANGER-RICH]

Ok I think I got it now leave it alone and run it like it is at Ming, and then decide what I want to do with it. Lake or track:confused: :D :D Who is comming up to Lake Ming that weekend for the classic v-drive club racing??

[SANGER-RICH]

Are you guys talking about putah creek at berryessa when you say pc???
Yes PC is PCR, Putah Creek Resort at the L section where the store and Motel is.

[suckerpunch]

Richard, you can use my 1.22 gears at the track, but you wont like it. What I would do is put 1.09 or 1.12 in it, run fast and quick, and when you hang the rods out the side of the block, just tell mama its time for a new bullet! Our three blades haul ass. What happens to them is they air up so fast, lifting the tail, they rpm faster , than any two blade with a comparible blade. If you want speed bragging rights, than put a small two blade on with a ton of gear, and if you want to win races, put a big three blade on and drill them on the lights. call me if you want some different combos to try. Joe;)

[SANGER-RICH]

Richard, you can use my 1.22 gears at the track, but you wont like it. What I would do is put 1.09 or 1.12 in it, run fast and quick, and when you hang the rods out the side of the block, just tell mama its time for a new bullet! Our three blades haul ass. What happens to them is they air up so fast, lifting the tail, they rpm faster , than any two blade with a comparible blade. If you want speed bragging rights, than put a small two blade on with a ton of gear, and if you want to win races, put a big three blade on and drill them on the lights. call me if you want some different combos to try. Joe;)
OK Boss :)