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Search: Posts Made By: plavutka
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11-11-2020, 04:09 AM
Replies: 65
Views: 5,724
Posted By plavutka

I am from EU and hear this first time. Only in...

I am from EU and hear this first time. Only in few small lakes we have no chance, must be electric drive, but normally it is the same like in other world.
Technology for 1500 kwh storage in accu...
Forum: Prop Talk
09-28-2020, 09:04 AM
Replies: 6
Views: 529
Posted By plavutka

Only 7,7% slip?

Only 7,7% slip?
Forum: Prop Talk
07-08-2020, 09:58 AM
Replies: 127
Views: 6,033
Posted By plavutka

Ratio 1.3: 3/4= 0.75 1/0.75= 1.3 Ratio...

Ratio 1.3:
3/4= 0.75
1/0.75= 1.3

Ratio 1.5:
1/1,5 = 0.6 = 3/5
06-22-2020, 12:30 PM
Replies: 25
Views: 1,733
Posted By plavutka

https://www.google.com/url?sa=i&url=https%3A%2F%2F...

https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.offshoreonly.com%2Fforums%2Ffiberglass-paint%2F110996-anyone-added-pad-older-v-bottom-3.html&psig=AOvVaw3dpNoUrz9uSd0_iw_RYYQp&ust=159292942400100...
06-22-2020, 08:25 AM
Replies: 25
Views: 1,733
Posted By plavutka

Maybe hull upgrading with nice pad kell?

Maybe hull upgrading with nice pad kell?
05-24-2020, 01:30 AM
Replies: 13
Views: 1,614
Posted By plavutka

They did not comment: - test props condition...

They did not comment:
- test props condition and type.
- they did not comment prop slip...
05-24-2020, 01:22 AM
Replies: 13
Views: 1,614
Posted By plavutka

18% :( 1.) Prop with no slip have 100%...

18% :(


1.) Prop with no slip have 100% speed.
2.) Prop with 10% slip have 90% speed.

a.) If your prop made 15% slip at cruising speed you have 85% of theoretically slip.
b.) If this new...
02-27-2020, 01:40 PM
Replies: 12
Views: 1,182
Posted By plavutka

No tabs, 24 degree pad keel hull, no notch 30 ft...

No tabs, 24 degree pad keel hull, no notch 30 ft LOA, cca 4600 lb empty:
prop PT OFX5 = 26-28 mph
prop Maximus 15,25" diameter with short hub = 18-19 mph
Forum: General Q & A
02-01-2020, 10:52 AM
Replies: 39
Views: 62,284
Posted By plavutka

Which one have more hp on prop shaft: a.)...

Which one have more hp on prop shaft:
a.) https://www.mercurymarine.com/en-gb/europe/engines/inboard-and-sterndrive/mercruiser/82l/ ?
b.)...
Forum: Vendor Talk
10-17-2019, 06:12 AM
Replies: 7
Views: 1,056
Posted By plavutka

And interference? Biplanes, multiwing rotors...

And interference?
Biplanes, multiwing rotors have bigg troubeles with interference by speed.
Forum: General Q & A
05-04-2019, 02:24 AM
Replies: 516
Views: 75,949
Posted By plavutka

Hard to belive. Perhaps 2 hp or less. P = Q x H...

Hard to belive. Perhaps 2 hp or less.
P = Q x H x g x 0,4 (Kw)


p.s
Under name Volvo Penta it is a lot of LS3 marine engines. Not wery sttrong, but @ 430 hp made more prop torque like BBC HO.
Forum: General Q & A
04-07-2019, 11:32 AM
Replies: 516
Views: 75,949
Posted By plavutka

What would be reall estimated diference in power...

What would be reall estimated diference in power betwen this nice engine from thread and original Chevrolet LS3 376/480 480hp V8 Crate Engine Partsworld Performance...
04-06-2019, 03:17 AM
Replies: 1,492
Views: 282,544
Posted By plavutka

Talking https://encrypted-tbn0.gstatic.com/images?q=tbn:AN...

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTwOWUM8do9E1wPOxy3BrSoZpSYXWDpMGv1LEHr62lL0CJJWs1U
09-23-2018, 03:41 AM
Replies: 41
Views: 6,254
Posted By plavutka

And steps vs pad keel? OL 29, Velocity VR1,...

And steps vs pad keel?
OL 29, Velocity VR1, Tuff 28...
Forum: Velocity
08-03-2018, 11:11 AM
Replies: 63
Views: 8,119
Posted By plavutka

25% slip at 77.3 mph? (5450 rpm, 77,3 pmh, 30...

25% slip at 77.3 mph?
(5450 rpm, 77,3 pmh, 30 pitch, 1,5:1 reduction)
Forum: General Q & A
07-12-2018, 04:09 AM
Replies: 28
Views: 14,152
Posted By plavutka

Not agree. 1.) If you look torque on prop...

Not agree.


1.) If you look torque on prop by same prop rpm, you have better prop torque by LS3 than by 8,2 HO. Therefore you need to use B1 with 1,5 for BBC and 1,65 for LS3.
LS3.480 which we...
Forum: General Q & A
07-11-2018, 11:00 AM
Replies: 28
Views: 14,152
Posted By plavutka

Hello, We have all equipment there, but...

Hello,


We have all equipment there, but no time to put it together. Hopefully will put boat in water in september or october.
Marinising of LS3-480 is simply, we made time "mistake" with boat...
05-19-2018, 01:22 PM
Replies: 1
AF
Views: 369
Posted By plavutka

AF

Hello,


What is true about speed loss if use AF?
02-10-2018, 11:25 AM
Replies: 9
Views: 1,160
Posted By plavutka

And what is diference in compare with Maximus...

And what is diference in compare with Maximus with wery high drive shaft? (Slip, Bow lift, stern lift...)
01-16-2018, 07:29 AM
Replies: 28
Views: 5,511
Posted By plavutka

Understand variable pitch by aircraft screws....

Understand variable pitch by aircraft screws. There you have bigg forgiving factor at diferent angle of atack arround the inside half diameter. Air screws work good also by airfoils with ticknes more...
01-07-2018, 12:22 PM
Replies: 177
Views: 13,622
Posted By plavutka

could be that civilisation have something to do...

could be that civilisation have something to do with global warming, but small vulcano interruption push in athmosphere more CO2 like global civilisation in 10 years. Ants in Amazonia made same...
01-07-2018, 08:20 AM
Replies: 177
Views: 13,622
Posted By plavutka

Really? World is warmer and warmer and this cold...

Really? World is warmer and warmer and this cold weather in USA is caused by global warming! (No energy in athmosphere, no changes, more energy, bigger changes.)! Question is only who is guilty for...
11-02-2017, 12:43 PM
Replies: 23
Views: 3,696
Posted By plavutka

Straight cut = better efficiency = stronger =...

Straight cut = better efficiency = stronger = loudly = roughly operate.
Helical = silent = more axial pressure on ball bearing = more heat = bad efficiency.
All pure racing cars, bikes... have...
Forum: General Q & A
10-22-2017, 03:29 AM
Replies: 81
Views: 4,932
Posted By plavutka

Perhaps CG to much in front? Where it is? ...

Perhaps CG to much in front? Where it is?
Perhaps hook on bottom?
Perhaps both problems?
10-10-2017, 01:13 PM
Replies: 12
Views: 2,059
Posted By plavutka

I am quite confused now. There Chevrolet LS3...

I am quite confused now. There Chevrolet LS3 376/480 480hp V8 Crate Engine - 19301358 Partsworld Performance (http://www.partsworldperformance.com/ls3-376-480-v8-crate-engine-19301358) claim almost...
Showing results 1 to 25 of 53
 


 
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