Still wondering how many inches setback with Hydrostream Valero

[Valero2.5]

i think i can benefit from more setback, currently at CMC 5.5" i want to add 4" i think it will help, anyone who has used set back over 5" on a VKing or Valero Vee hull, mine is 1985. Please respond. Thanks. You can see in pic, trim angle.
-Jim

[blacktruck]

What is your current setup? Motor? Prop, speed? etc.

[Valero2.5]

What is your current setup? Motor? Prop, speed? etc.well
with my modified cut heads and new reeds and good compression 200 hp 2.4 we did 77 mph, (my 2.5 sleepy 200 hp did 76 mph) around 6,100 rpms... i think this was with my 30" Cleaver D.A.H. and last Fall with Bridgeport carb and jack up all the way, 81 mph and 6,300 Rpms/ i was SURPRISED such low Rpms with only girlfriend and i in the boat. I had an HST with EFT Bridge and would do 85 mph 7,000 Rpms with 26 Chopper and FOUR adults. My new Brideport (now on boat and fresh motor 19 hours) could not wind up with Mazco Re4 unfortunately...we had only time to try one prop and i picked wrong one to try. The motor was about an inch above jack (bolted) and was up all the way on only test, very cold day... But the boat is always way slower than it should be. i do trim to the teeth to get bow up, with CMC jack as only set back. See pic for how much trim used.

[blacktruck]

Is your hull solid and blueprinted? Make sure your hull is perfect, then start tweaking the setup, otherwise it's all for nothing. You might want to weigh it too, so you know for comparison. Also, measure where your prop shaft is to the pad, that's the measurement you want. Sounds like you might have a hook in your hull and you are fighting for lift, in which case setback won't help until that is fixed. Your pic looks like a lot of positive trim without much lift.

I am sure lots of stream guys will chime in.

[Valero2.5]

Is your hull solid and blueprinted? Make sure your hull is perfect, then start tweaking the setup, otherwise it's all for nothing. You might want to weigh it too, so you know for comparison. Also, measure where your prop shaft is to the pad, that's the measurement you want. Sounds like you might have a hook in your hull and you are fighting for lift, in which case setback won't help until that is fixed. Your pic looks like a lot of positive trim without much lift.

I am sure lots of stream guys will chime in.

yes, i will try and do more research, have owned boat many years, and always dry at ramp, i am going to cut an inspection plate and ck core stringers to see if dry, i have no reason to doubt core wet, i have a friend with a HEAVY Voyager he cant get over 69 mph with a Pro Max 225 hp, both of us cant see high speeds yet? i guess if stringers dry i will next check into hull, if a mess and too much work, i will sell, i have a nice motor, i want a nice light safe boat that can fly mid 80's no issues.

[transomstand]

The problem is NOT setback. A Valero will run 90 mph with a 200 and the plate you have.

[blacktruck]

yes, i will try and do more research, have owned boat many years, and always dry at ramp, i am going to cut an inspection plate and ck core stringers to see if dry, i have no reason to doubt core wet, i have a friend with a HEAVY Voyager he cant get over 69 mph with a Pro Max 225 hp, both of us cant see high speeds yet? i guess if stringers dry i will next check into hull, if a mess and too much work, i will sell, i have a nice motor, i want a nice light safe boat that can fly mid 80's no issues.

Blueprinting is not problem and probably the only thing holding it back. Check the hull first, not the core if you have no reason to believe the structure is bad. A hooked hull will rob tons of MPH. It's the easiest and first thing to correct.

[Valero2.5]

can you explain simple tests? using straight edge? Does boat have to be upside down?

[Valero2.5]

yikes! yeah we see no where near that :-(

[Krazymaan]

To be safe, you can start way back here and keep cutting an inch off at a time until you get it right like this guy did.

Looks pretty stable :eek:

368573

[Scream And Fly]

I just realized you have a V-bottom, not a YT. I think what Pete says is correct. I think 5.5 inches of setback is perfect for that hull. That's a V-King hull and they never have problems getting enough lift. Something else is the issue. Check the bottom for any warping or hooks. It will not be perfect so don't get alarmed if you put a straightedge on it and you see gaps. Just as long as you don't observe anything drastic.

I also think the right prop would really help solve the issue for you. When in doubt, try a large-blade Mercury Chopper.

Greg

[Valero2.5]

Hi Greg, thanks, i sold the YT and am stuck with only my 1985 Valero Vee but it will not "Scream n Fly" lol. it is like a tank. we hit 81 mph with a Mazco Re4 and my Bridgeport, my gf is not a bllimp either, maybe 140 lbs. LOL.

[Valero2.5]

why would a guy put a jack on a fishing boat? i have been sick all week but that is a joke right?

[transomstand]

I think what Pete says is correct.

Has to be......it came straight from the bunny.

[Valero2.5]

it would be funny to have while fishing all the questions, is it fast????
Oh yes! it is! LMAO

[Valero2.5]

I just realized you have a V-bottom, not a YT. I think what Pete says is correct. I think 5.5 inches of setback is perfect for that hull. That's a V-King hull and they never have problems getting enough lift. Something else is the issue. Check the bottom for any warping or hooks. It will not be perfect so don't get alarmed if you put a straightedge on it and you see gaps. Just as long as you don't observe anything drastic.

I also think the right prop would really help solve the issue for you. When in doubt, try a large-blade Mercury Chopper.


Greg

Hi Greg, thanks for insight, i asked the other guy how do you ck for hook? i have a warmer day in Wi. tommorow, i can pull it out of garage and check? i like the fact a prop might help too, i know that was way too much, even my EFI was bummed out at a Big ear 30 i ran once.
The 4-blade Re4 was wayyyyyyy to much to wind up ????
i was hoping for a great holeshot and say mid to high 80's, i think such low rpms on motor cut to 8,500 rpm capable, would not be pushing enough h.p. so maybe a few factors here?

[blacktruck]

can you explain simple tests? using straight edge? Does boat have to be upside down?

No, it's a simple test of just checking for hooks and rockers in a hull. A straight edge will reveal any gaps or rocker. Use an edge, do a visual, see if your floor is solid. Not uncommon on old boats to get imperfections and can really affect performance.

[XstreamVking]

This seems to be a case of if you don't like the answers, just try asking someone else the same questions.
Bottom is hooked, obviously. see photo...If it wasn't it would blow over with that crazy trim.
6 inches of setback is more than adequate.