Shorties
#1
Registered
Thread Starter
iTrader: (3)
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 550
Likes: 0
Received 0 Likes
on
0 Posts
Shorties
I know this topic has been beaten to death so I will be very specific in my question. I have a 2000 38 Lightning with 525sc's. I am installing a set of -2" IMCO's. My current prop is a 26 Q-iv hydramotive spinning in. My question is for those of you who have or had a 38 Fountain with small steps and have added the shorties. What props did you end up with for best overall performance and best top speed? Turning them in or out? Cut diffuser ring? Trying to get close to what I need before splashing and testing the boat.
#2
Registered
I turned a 30 Bravo before shorties, and after tried the 30 Bravo, and 30 Maximus (cut down diameter) after shorties. I picked up ZERO. Boat runs flatter and rides better, but don't expect any gains based on my experience. I prefer the 30 Maximus, it's a bit over propped for me, spinning only 5000 to the wood, but it has a mean cruise.
#3
Registered
Platinum Member
Join Date: Jan 2006
Location: wisconsin
Posts: 688
Likes: 0
Received 0 Likes
on
0 Posts
I know this topic has been beaten to death so I will be very specific in my question. I have a 2000 38 Lightning with 525sc's. I am installing a set of -2" IMCO's. My current prop is a 26 Q-iv hydramotive spinning in. My question is for those of you who have or had a 38 Fountain with small steps and have added the shorties. What props did you end up with for best overall performance and best top speed? Turning them in or out? Cut diffuser ring? Trying to get close to what I need before splashing and testing the boat.
#4
Registered
Thread Starter
iTrader: (3)
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 550
Likes: 0
Received 0 Likes
on
0 Posts
What ratio are your drives? Are they regular Bravo or XR, XZ..etc. Reason I'm asking is your spinning a 26 now, so you might be a 1.36 . Back in the 90's and early 2000's they put a lot of 1.36 uppers in regular bravos for strength. I would run what you have (26) and see if you can borrow a set of 28 Bravo 1's and spin them in.
#6
Registered
Platinum Member
Join Date: Jan 2006
Location: wisconsin
Posts: 688
Likes: 0
Received 0 Likes
on
0 Posts
So you don't no for sure what the upper ratio is, but you got some -2 shorties???? How did you no what ratio gears to get in the lowers??? You may have changes you overall ratio from whatever you had. So, with that being said... you need a baseline (rpm & speed) of your original setup, then put on the -2 shorties and see what RPM & speed you get, and go from there.
#7
Registered
I know this topic has been beaten to death so I will be very specific in my question. I have a 2000 38 Lightning with 525sc's. I am installing a set of -2" IMCO's. My current prop is a 26 Q-iv hydramotive spinning in. My question is for those of you who have or had a 38 Fountain with small steps and have added the shorties. What props did you end up with for best overall performance and best top speed? Turning them in or out? Cut diffuser ring? Trying to get close to what I need before splashing and testing the boat.
#10
Registered
Thread Starter
iTrader: (3)
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 550
Likes: 0
Received 0 Likes
on
0 Posts
Ok went testing today. I was gathering info on what I have on the boat. This is the assumption of 1:50 gears and I could be wrong. Having said that. 26 pitch hydramotive quad 4, 5400rpm, 1:50 gears (assume) 80.5 gps 9% slip on herrings calculator.