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Discussion Starter · #1 ·
I got the engine back in the Humble Little Nova, new oil/fuel lines are done. I still have a few odds and ends to wrap up under the hatch, plus she needs a real thorough inside cleaning, and polishing on the out side.

Took the boat out for a test run on Saturday and it was apparent that I need more prop. I have a labbed Mirage 25P at present. I'm thinking props somewhere in the 26-28 range would be about right. Anybody have a prop in this range that they want to sell? Need to test first :p: :)

Thanks
 

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Discussion Starter · #4 ·
Nolan- dumb question, but I know nothing about Hydromotives'. Is it a 4 blade?

Sounds interesting Frank. Sure would bite better than my Mirage.

My prop shaft center is +,- 7 3/4 in. below the bottom of the boat.... pretty deep. The Nova seems to like lots of bow lift. And I think 4 blades are stern lifters? That makes me think I should be running a 3 blade prop. But then, I don't know that for sure. Lack of prop knowledge :eek:

I'll give Throttle Up a call tomorrow and see what Matt or Julie have to say. They labbed my 25. Got rid of some pretty nasty chine walk, plus a little more mph ;)

Thanks !!
 

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www.propgods.com
He will ship you out props to test. He also has an exchange policy if you get the prop wrong. Good guy to work with. I have tested with him twice now and drink a beer with him now and then. His name is Ken and tell him I sent you.
 

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Kidnova said:
Nolan- dumb question, but I know nothing about Hydromotives'. Is it a 4 blade?

Sounds interesting Frank. Sure would bite better than my Mirage.

My prop shaft center is +,- 7 3/4 in. below the bottom of the boat.... pretty deep. The Nova seems to like lots of bow lift. And I think 4 blades are stern lifters? That makes me think I should be running a 3 blade prop. But then, I don't know that for sure. Lack of prop knowledge :eek:

I'll give Throttle Up a call tomorrow and see what Matt or Julie have to say. They labbed my 25. Got rid of some pretty nasty chine walk, plus a little more mph ;)

Thanks !!
That's deep propshaft. I would stick with a 3-blade for more speed.

I have a 27 Turbo 3-blade that I am going to try on my boat this week. If it doesn't work for my boat I will be selling it.
 

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Discussion Starter · #7 ·
blackhawk said:
That's deep propshaft. I would stick with a 3-blade for more speed.

I have a 27 Turbo 3-blade that I am going to try on my boat this week. If it doesn't work for my boat I will be selling it.
It is deep...old technology/hull design :rolleyes: I talked with Julie at TU earlier this a.m. She said a stock 27 Mirage would be a good place to start. I called Stern Drive Specialists and they have one I can try. So, hopefully I'll be able to swing by there this Saturday and give that 27 a whirl.
 

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Kidnova said:
It is deep...old technology/hull design :rolleyes: I talked with Julie at TU earlier this a.m. She said a stock 27 Mirage would be a good place to start. I called Stern Drive Specialists and they have one I can try. So, hopefully I'll be able to swing by there this Saturday and give that 27 a whirl.
I agree I think a 27 3-blade will be the ticket. I just sold a labbed 27 Mirage Plus that had about 20 minutes on it!
 

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Discussion Starter · #9 ·
Chris at Stern Drive Spec. was supposed to have gotten a Mirage 27 back from a guy who was doing some prop testing, so I could try it this week end. I called Chris this morning, and the prop didn't show up at Stern Drive :( So, looks like I'm SOL for now :angry1: Sshidt!!!

So, you guys think I should just stick my labbed 25 in a vise and break out the sledge and hammer it into a 27 ?? :laugher:
 

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Discussion Starter · #11 ·
Thanks for the suggestion Mr. D. But if I go long distance for props to try out, I'd probably go with Throttle Up as I've done biz with them before, and was very happy with them. But thanks again :)
 

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Kidnova, I have a set of 27p mirage plus props, one right one left that I want to sell for $500 w/o the hubs. You could then sell the one you don't need and end up with a pretty cheap prop. Let me know if you have interest. Of course you could try one out first to see if it is the ticket or not.

LS1 - That prop you are selling sound suspiciously like the ones I loaned you :confused: :laugher: Just messing with ya...........

Kidnova - how about some more info like what wot rpm did you get, how was the boat behaving and max torque/hp rpm of the engine. If I was guessing I would say your boat would be all around best with a 4 blade bravo 1.
 

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Discussion Starter · #13 ·
Blue Thunder said:
Kidnova, I have a set of 27p mirage plus props, one right one left that I want to sell for $500 w/o the hubs. You could then sell the one you don't need and end up with a pretty cheap prop. Let me know if you have interest. Of course you could try one out first to see if it is the ticket or not.

LS1 - That prop you are selling sound suspiciously like the ones I loaned you :confused: :laugher: Just messing with ya...........

Kidnova - how about some more info like what wot rpm did you get, how was the boat behaving and max torque/hp rpm of the engine. If I was guessing I would say your boat would be all around best with a 4 blade bravo 1.
BT - I tested on a local channel (Erie Canal Syatem) so not much room to let'r rip distance wise. I set the rev limiter on my Crane box for 5800 RPM. I hit the 5800 mark real easy and quick. If it doesn't rain tomorrow I'm heading for the lake. +,- 25 miles long so plenty of room to romp. I'll know better how it behaves then.

The Nova (mine) likes bow allot of lift. So a 3 blade would seem like the way to go. I spoke with Julie at Throttle Up. She said basically, the more blades added, the more stern lift attained. That said, Julie seems to think a 27 Mirage+ is a good place to start. I'm pretty sure I can get a 27 from TU to try out.

I'll let you know how things go on the lake, BT :)
 

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My boat with 3 blades plow the front end. The 4 blades raise the whole boat out of the water and make it run nice. Moral to the story, each boat is different. Let me know if you would like to try them out. Otherwise you can drag your chit down here and have a nice prop testing day. We could come up with a large selection I'm sure.
 

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Bigger boats need the more blade area to lift the boat out of the water so 4-blades work better. Smaller boats can respond better to a bow lifting 3-blade because there is enough blade area to carry the bow.

Typically smaller boats with deep propsafts do not like Bravo style props. But, I agree with Blue Thunder, every boat is different.
 

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I believe there is more to it then that. I still have the original 25p mirage props my boat came with from new. It ran very well with those at the 365hp/side power level. As power level increased everything changed. There comes a point in power where the 3 blades loose a lot of handling and a 4 blade is needed. I think kidnova may be there now.

For what its worth kid, 5800 is a lot of rpm for a bravo1. I think I would tune it for the 5500rpm or under range. It will work best I think and give you good life in the drive.
 

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I agree, more power equals the need for more bite which equals the need for more blade area.

In Kid's case I think his deep propshaft will enable him to keep using a 3-blade because it will still bite well. But that is just my opinion.

Like I said deep propshaft boats USUALLY don't like 4-blade props, especially if they like a bow lifting prop. Key word being usually. :D

I never pass up an opportunity to try a prop!
 
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