Like Tree0Likes

Bravo to Arneson Conversion?

Reply
Old 08-13-2002, 08:15 PM
  #11
VIP Member
Platinum Member
 
wwwTOPDJcom's Avatar
 
Join Date: Mar 2002
Location: Vestal/Binghamton NY
My Boats: 1992 450hp Senza Spectre 25'
Posts: 3,477
Question

anyone know how they perform on stepped hulls?
wwwTOPDJcom is offline  
Reply With Quote
Old 08-13-2002, 09:19 PM
  #12
Registered
 
Mark in So. MD's Avatar
 
Join Date: Mar 2002
Location: Solomons Island, MD
Posts: 885
Default

All holes line up, that nice, no transom filling or anything. I take it that it is just like an IMCO ext box or something.

And yes, where to set the shafts? Kinda just trial and error i guess?
Mark in So. MD is offline  
Reply With Quote
Old 08-13-2002, 09:39 PM
  #13
Platinum Member
Platinum Member
 
Steve 1's Avatar
 
Join Date: Apr 2001
Location: Beautiful Fort Lauderdale www.cheetahcat.com
My Boats: Slippery when wet!
Posts: 10,833
Default

WWW Yes the Surface Drives work best on a properly designed Step hull.

Reasoning the “Attitude is built into the Boat” .As you do not have the leverage benefit (and loss also) from the Stern drive, Now the surface drive is just that! The thrust being placed on the boat effectively somewhere around the bottom edge of the transom .and Straight foreword.

Unless you use a Propeller with a 3 Foot diameter!!
Steve 1 is offline  
Reply With Quote
Old 08-13-2002, 09:40 PM
  #14
Goody76
Guest
 
Posts: n/a
Default

I pondered the idea last year, I have a single engine cat upgraded imco xr behind 750 hp and was going through drives like underwear. I talked to Rik @ Arneson and was very close to going that route especially picking up 8-15 mph's due to what you lose through gearing in bravo's plus the nice tail that they kick up!! I just didn't want to be the guinea pig although I am still considering it. It is an easy conversion alot eaiser than going to a speedy IIA or IV and for about the same money without moving the engine.
 
Reply With Quote
Old 08-13-2002, 09:59 PM
  #15
Registered
 
Mark in So. MD's Avatar
 
Join Date: Mar 2002
Location: Solomons Island, MD
Posts: 885
Default

Goody, same money? I thought Arneson Surface Drives cost a lot because they are sorta rare. But a new VIdry sump one cost 21K and I am sure that is with out the trans. plus everyone says its heavy, also like you said, the reduced drag of not haveing a big outdrive in the water.

And ssherman you can get all that you need for 28,500 and that is for twins?

Kinda makes me wonder why anyone would go with a #VI?
Mark in So. MD is offline  
Reply With Quote
Old 08-14-2002, 12:44 AM
  #16
Registered
 
X-Rated30's Avatar
 
Join Date: Mar 2001
Location: Monroe, LA
My Boats: 1997/2010 Spectre Catamaran w/ twin 250XS Sports
Posts: 3,882
Default

Quote:
Originally posted by dockrocker
How would the switch from Bravos, which sit relatively deep in the water, to Arnesons (surface piercing) affect the handling of a given boat?

I seem to remember there being some talk of issues with the TS Top Guns with surface drives and bigger power? I'm just thinking it could be a nasty surprise to bolt up the new $30K drives and find out the boat gets all squirrelly...
I have an older boat that came in Kaama surface drives and TRS drives. I have heard that for the surface drive, they built a hook into the last four feet of the hull that the TRS drive didn't have. I haven't looked, but I would assume that is correct.

If it is, it seems like changing prop sizes and the number of blades could correct (to an extent) problems associated with the swap.

Your boat builder should be able to give you an idea of the effect that you will have due to the prop's change in height and distance from the transom.
X-Rated30 is offline  
Reply With Quote
Old 08-14-2002, 06:48 AM
  #17
Registered
 
timucin's Avatar
 
Join Date: May 2002
Location: istanbul
Posts: 1,577
Default

After sending lots of threads about arneson ; I know 2much about them now.

1-with bravos,you change the direction of power two times by 90 degrees, (-)B

2-material used in bravo is weak.(-)B

3-you can read broken bravos on every page of this web-site.there are hundreds of companies building spare parts for bravo.which shows bravo's need parts very often (-)B

4-never heard a broken arneson.(+)A

5-there is no company building spares for arnesons.cause you never need.(+)A


go for arneson. experts say 'the only unbreakable thing in water'
for arneson.

I hope rik reads this,I may need a serious discount for the next year.
timucin is offline  
Reply With Quote
Old 08-20-2002, 12:25 AM
  #18
VIP Member
Platinum Member
 
wwwTOPDJcom's Avatar
 
Join Date: Mar 2002
Location: Vestal/Binghamton NY
My Boats: 1992 450hp Senza Spectre 25'
Posts: 3,477
Default

they really need to get the price down on the alpha/bravo
conversion kit like 8 or 9 k not 15k
I think its a production problem the low production = higher prices
I really want to do this for a piece of mind. allways worring about
toasting a drive.


performance gain
fuel savings
almost no worries
less chance of that submerged log ruining your day
oh ya I forgot cool rooster tail.
wwwTOPDJcom is offline  
Reply With Quote
Old 08-20-2002, 01:38 AM
  #19
Platinum Member
Platinum Member
 
Steve 1's Avatar
 
Join Date: Apr 2001
Location: Beautiful Fort Lauderdale www.cheetahcat.com
My Boats: Slippery when wet!
Posts: 10,833
Default

WWW The Military love them,for those reasons.And like I said before Arneson has a real good Propeller program also .
Steve 1 is offline  
Reply With Quote
Old 08-20-2002, 02:32 AM
  #20
speel chekk this fokker!
Charter Member
 
puder's Avatar
 
Join Date: Feb 2001
Location: Locust Valley, New York
My Boats: 27' Scarab
Posts: 5,329
Default

for all the talk of arneson conversions why aren't more of them taking place. I wanted to do an arneson for a while. but got a sweet dela on a bravo and transom assemblie and am not running all to much power. (well none as of now cus i still don't have my engine!!!!)

The next project boat will have an arneson or two

who knows waybe even arneson with small jet engines I foudn aplce to get 300hp 160lbs for 10k each ready for boats.
__________________
Pardon me, while I whip this out!
puder is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jcap
General Q & A
2
02-10-2007 04:29 PM
open wide
General Q & A
7
06-23-2004 11:59 PM
GLH
General Q & A
10
12-01-2003 11:24 AM
velocitoy
General Boating Discussion
2
08-13-2003 09:27 PM
Byron
General Boating Discussion
13
03-16-2003 07:31 PM



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 01:10 PM.


Copyright 2011 OffShoreOnly. All rights reserved.