6 blade Herrings and Bravo XR's ?
#1
Registered
Thread Starter
Join Date: Jul 2005
Location: Oneida Lake
Posts: 252
Likes: 0
Received 0 Likes
on
0 Posts
6 blade Herrings and Bravo XR's ?
Looking for some folks that have had success or experience with this setup. I have been breaking drives quite frequently and have been told that the low slip numbers achieved with these props are contributing to my issues. Has any one else had a similar experience. I am currently running them on a semi staggered 38 Fountain lightening with 575's and Teague chillers and a pulley reduction. I also have imco 2" shorties with 1:3.5 lowers turning 30p 6b herrings. Any input or experience with this setup would be greatly appreciated.
#2
Registered
Join Date: Oct 2000
Location: Spicewood, Texas USA
Posts: 1,382
Likes: 0
Received 3 Likes
on
2 Posts
Had a customer with a similar problem on a new 35 Fountain with 525's. Kept throwing blades on Herring 6 blades and breaking Bravos. We added 1" drive spacers and switched to Maximus props. Only lost 1-2 MPH, planed a lot better and so far hasn't broken anything. Those aggressive drive heights are really tough on Bravos.
Bob Lloyd
Full Throttle Marine
Bob Lloyd
Full Throttle Marine
#3
Registered
Thread Starter
Join Date: Jul 2005
Location: Oneida Lake
Posts: 252
Likes: 0
Received 0 Likes
on
0 Posts
Bob,
Thanks that is great information and exactly the type of info that I am looking for. I have thrown two blades but they were both Bravo 1 4 blades that I lost a blade on. I could see how this would be related to the drive height as well. Thanks again for the info.
Thanks that is great information and exactly the type of info that I am looking for. I have thrown two blades but they were both Bravo 1 4 blades that I lost a blade on. I could see how this would be related to the drive height as well. Thanks again for the info.
#4
Registered
No Bravo ever like being used as a surface drive, At high drive heights they Load/Unload too much (just going through regular wind chop) and the Torsion effect on those (relatively small) single vertical shaft drives is too much. Even compounded more with 6 blade props where blade area is high.
#7
Registered
Gold Member
iTrader: (3)
Join Date: Oct 2005
Posts: 614
Likes: 0
Received 0 Likes
on
0 Posts
[QUOTE=custom29scarab;3952161]Looking for some folks that have had success or experience with this setup. I have been breaking drives quite frequently and have been told that the low slip numbers achieved with these props are contributing to my issues. Has any one else had a similar experience. I am currently running them on a semi staggered 38 Fountain lightening with 575's and Teague chillers and a pulley reduction. I also have imco 2" shorties with 1:3.5 lowers turning 30p 6b herrings. Any input or experience with this setup would be greatly appreciated.[/
Wondering what kinda slip numbers you are running ? Thx
Wondering what kinda slip numbers you are running ? Thx
#8
Registered
Thread Starter
Join Date: Jul 2005
Location: Oneida Lake
Posts: 252
Likes: 0
Received 0 Likes
on
0 Posts
Well best I can figure for slip is around 9-11% But I am no expert on the subject. Just run 5300rpm apx at around 100-103 depending on temp and humidty. Does this help you in any way?First Gun