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Search: Posts Made By: arttu
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Forum: Prop Talk
07-11-2015, 07:41 AM
Replies: 19
Views: 9,179
Posted By arttu

Hello! Now I have tried 25p mirage (non-plus).....

Hello! Now I have tried 25p mirage (non-plus).. It was ok but "blows out" just after planning. Need to reduce gas, it gets grip and then we go :) Top end was 72 mph @ 5500 rpm. So seems that my limit...
Forum: Prop Talk
06-23-2015, 04:22 PM
Replies: 19
Views: 9,179
Posted By arttu

Don`t worry I´m not that dumb as I look :) :) I...

Don`t worry I´m not that dumb as I look :) :) I Ment that there`s a difference in cupping between mirage and mirage+ props if understood correctly, so was wondering if this cupping reduce speed?...
Forum: Prop Talk
06-23-2015, 10:37 AM
Replies: 19
Views: 9,179
Posted By arttu

^^exactly... If spinning same engine rpm, will...

^^exactly... If spinning same engine rpm, will mirage+ 25p be faster than normal mirage 23p??
Forum: Prop Talk
06-22-2015, 02:54 PM
Replies: 19
Views: 9,179
Posted By arttu

Blower installed and tested :) Yeah there is a...

Blower installed and tested :) Yeah there is a "little" bit more power and torque :)

I tried 27p solas L3 and had huge problems lifting boat to planing, slipped horrible at the start. There was...
Forum: Prop Talk
06-22-2015, 11:51 AM
Replies: 6
Views: 3,728
Posted By arttu

Cause having rbx-102 hub in my hands just now :)...

Cause having rbx-102 hub in my hands just now :) Isn`t Flo torq almost same? Please post if you have seen or heard about this type of combination, need to order prop fast!
Forum: Prop Talk
06-22-2015, 07:35 AM
Replies: 6
Views: 3,728
Posted By arttu

Rubex hub for mirage prop?

Hello! Does anyone know if Rubex (102) hub fits mirage 25p plus (non solid hub) prop??
Forum: Prop Talk
03-23-2015, 03:31 PM
Replies: 19
Views: 9,179
Posted By arttu

It revs up to max (5100) with present prop easily...

It revs up to max (5100) with present prop easily so definately need to add some pitch with blower mounted. Just the question is how much :) I believe blower will add about 100hp? 454 mag, Gil...
Forum: Prop Talk
03-23-2015, 02:57 PM
Replies: 19
Views: 9,179
Posted By arttu

Yep, calculating with those I came up with 26"-...

Yep, calculating with those I came up with 26"- 27" pitch.
I´m struggling between props Dia 15 1/8 26p or 14.5 27p. Both 3 blades...
Never had slip issues so would`t like to increase dia. I believe...
Forum: Prop Talk
03-22-2015, 03:59 PM
Replies: 19
Views: 9,179
Posted By arttu

HP vs pitch

Hello! I´m wondering is there any rough formula to calculate prop pitch vs engine or shaft HP?
I´m going to add 256 blower on my 454mag and wondering how much pitch can add to prop?

Specs now:...
Forum: Do It Yourself, Boating on a Budget
01-29-2015, 11:44 AM
Replies: 30
Views: 46,812
Posted By arttu

Hello! Greetings from Finland! I´m thinking...

Hello! Greetings from Finland! I´m thinking supercharge my boat engine, 454 magnum with weiand 177 or 250 and have few questions. Maybe you could help me with these?

I have marine heat exchanger...
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