Hooker pitches for strokers

[Big Kahuna]

yes, the Hooker is a big hub design.

 

[Waternut]

Now I'm thinking....will a TBM pump cone work with a Hooker prop?

Should work better with the hooker because the big hub on the hooker will line up and transition to the TBM cone better.

However, I thought the TBM cones loaded the pumps even more making a potentially over pitched prop worse.

 

[Ericfox]

some people seem to be talking about underpitched... lost track of who was talking about what... but the tbm or r&d afterburner will help if your prop is underpitched... I guess because it will decrease the amount of volume the impeller will have to keep filled behind it... not a pump expert though...

 

[McDog]

I believe spinning a prop means underpitched.

 

[Ericfox]

yeah thats what it means... also people talking about the opposite...

 

[masterblaster]

Paul told me today to put the stock cone back on. He said a TBM pump cone would be even better. I'm spinning the 10/16 Hooker some with a 771 flat top, total loss, tnt pipe, and dual 44's on a Boyesen intake.

Now I'm thinking....will a TBM pump cone work with a Hooker prop?

having your nozzle bored and running a shorty pump cone doesnt work that well.you are pushing more water but losing thrust at the same time. Im running the same 10/16 on a 5 mill stroker big bore around 830 with stock nozzle and cone and it jumps out of the water out of the hole.

Gil,are you saying your 9/15 was soft out of the hole until you bored the nozzle and you already had a shorty cone on it? I may swap out a bored 85 mil nozzle on mine to see if it gives it anymore down low,its got more speed up top than ill ever use so it would be a good trade off

 

[Don 79 TA]

I am running a Hooker 9/15 on my limited setup and love it. (It even did great in the surf today)

My limited set up is as follows

Lamey 5mil stroker w/85 mil flat tops=828cc
218psi in both holes
multi channel dig t/l w/static set at 31* pullin it back at 5k
Novi 48 single w/V Force 2 reeds/cages buring 100LL w/Benol
B pipe w/Crammit's carbon limited chamber w/oem waterbox run REAL dry
85 mm exit nozzle w/Virgin straight pull trim w/wet wolf stubby(tried stk cone and killed it)

I love my Hooker 9/15 and the people that have ridden my ski that should know what they are talking about say it's propped right. (for my riding style-freestyle ONLY-lil or no freeriding). (And no barrel rolls) lol

I'm running an equivalent setup like you and haven't had a problem
although i do run a big bore protec nozzle and wet wolf cone
i don't really have hooking up problems, at least for my riding style
i run the 9-15 pitch and just love that low end pop it has

 

[Waternut]

I believe spinning a prop means underpitched.

I agree and I'm not saying your motor is wussy by any means. In fact, it should be better than mine but I have a hard time believing your motor is too much for that prop... that's all I was trying to say.

 

[GIL]

having your nozzle bored and running a shorty pump cone doesnt work that well.you are pushing more water but losing thrust at the same time. Im running the same 10/16 on a 5 mill stroker big bore around 830 with stock nozzle and cone and it jumps out of the water out of the hole.

Gil,are you saying your 9/15 was soft out of the hole until you bored the nozzle and you already had a shorty cone on it? I may swap out a bored 85 mil nozzle on mine to see if it gives it anymore down low,its got more speed up top than ill ever use so it would be a good trade off

The 85 nozzle was the begininng of all things finally going right, added the stubby cone and it's great. I have since gone back and tried a stk cone and killed it-hence I run the stubby w/the 85 nozzle and my 9/15.

 

[McDog]

I agree and I'm not saying your motor is wussy by any means. In fact, it should be better than mine but I have a hard time believing your motor is too much for that prop... that's all I was trying to say.

I didn't even see your post so I meant no offense buttknocker.

I'm having a hard time believing it too.... but Paul did work some magic on tuning the carbs and pipe and I'm gonna give his advice on the pump cone a try.

 

[masterblaster]

[/COLOR]

The 85 nozzle was the begininng of all things finally going right, added the stubby cone and it's great. I have since gone back and tried a stk cone and killed it-hence I run the stubby w/the 85 nozzle and my 9/15.

huh thats the first time ive ever heard a bored nozzle and stubby cone used together worked out for the best.you ever try a larger pitch hooker on there just to see what it would do?
when you added the stubby cone to the setup with the 9/15 and 85 bore nozzle,what was the most noticeable improvement.

 

[freestylegeek]

I just got some spacer washers to move the prop away from the stator. They are about 3mm thick, and I installed two (2) yesterday. I'm hoping to get on the water tonight and see just how much 6mm will "unload" the pump. I love the mid-range pull of my 13-19 Hooker, but want to free up the motor off idle. I also hope to try a short cone and see what that does.

BTW, instead of paying $23 for the OEM Yamaha rubber coated spacer washer, I bought ten (10) aluminum washers (part number 93286A149) from Mcmaster Carr - $6.00

 

[McDog]

I just got some spacer washers to move the prop away from the stator. They are about 3mm thick, and I installed two (2) yesterday. I'm hoping to get on the water tonight and see just how much 6mm will "unload" the pump. I love the mid-range pull of my 13-19 Hooker, but want to free up the motor off idle. I also hope to try a short cone and see what that does.

BTW, instead of paying $23 for the OEM Yamaha rubber coated spacer washer, I bought ten (10) aluminum washers (part number 93286A149) from Mcmaster Carr - $6.00

I love it when people post mcmaster part numbers. You rock.

 

[Philip Clemmons]

I talked to Dave today and he was very helpful with my situation and is repitching and shipping out today!

There are so many variables its hard to get it right on the first try unless you have a "cookie cutter" type setup that has been tested by Impros or your engine builder. Its kinda like the converter on a race car.....sometimes it takes 5 or 6 tries to get it right. It does not mean anyone is wrong...............it just takes a lot of testing to optimize your setup. Something may hurt in the short term and be beneficial once you sort it out...................We are all in the want it now mindset though..............

Props to Dave and Impros for handling this and getting it turned around quickly! This setup should be pretty darn close.......cant wait to sort it out and try :brap:

 

[GIL]

huh thats the first time ive ever heard a bored nozzle and stubby cone used together worked out for the best.you ever try a larger pitch hooker on there just to see what it would do?
when you added the stubby cone to the setup with the 9/15 and 85 bore nozzle,what was the most noticeable improvement.

Boring the nozzle to 85 was the biggest improvement. Now I can go between the stubby and stk cone and see a big difference. On my setup-the stubby is the only way to go.

 

[Scorn800]

A tach will help you find the right pitch.

 

[freestylegeek]

OK, so 6mm spaced prop - no good, still too tall. I tossed in the shorty cone, and it brought things down a tiny bit, but not enough. I'm thinking I'm going to end up at an 11-17 (or a 10-16), no spacers, stock cone.

Like Phillip Clemmons said, there's a bunch of tuning involved to get it just right.

 

[Don 79 TA]

I talked to Dave today and he was very helpful with my situation and is repitching and shipping out today!

There are so many variables its hard to get it right on the first try unless you have a "cookie cutter" type setup that has been tested by Impros or your engine builder. Its kinda like the converter on a race car.....sometimes it takes 5 or 6 tries to get it right. It does not mean anyone is wrong...............it just takes a lot of testing to optimize your setup. Something may hurt in the short term and be beneficial once you sort it out...................We are all in the want it now mindset though..............

Props to Dave and Impros for handling this and getting it turned around quickly! This setup should be pretty darn close.......cant wait to sort it out and try :brap:

Dave is awesome to deal with and you are right.... it takes time to dial in your setup that you like, as i've said before it comes down to personal preference too
i've tried various pitches and props to find what i like, and Dave was always there when i needed to talk to him about it

 

[GIL]

OK, so 6mm spaced prop - no good, still too tall. I tossed in the shorty cone, and it brought things down a tiny bit, but not enough. I'm thinking I'm going to end up at an 11-17 (or a 10-16), no spacers, stock cone.

Like Phillip Clemmons said, there's a bunch of tuning involved to get it just right.[/quote]


And not alot of people like the way my ski 'runs out' sooooo fast. It has done about all it's going to do in 100'. (which is what I like).

 

[Big Kahuna]

OK, so 6mm spaced prop - no good, still too tall. I tossed in the shorty cone, and it brought things down a tiny bit, but not enough. I'm thinking I'm going to end up at an 11-17 (or a 10-16), no spacers, stock cone.

Like Phillip Clemmons said, there's a bunch of tuning involved to get it just right.

Having issues getting mine off....................arggggggggggggg Will try again once Isabella goes down.