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WTB ABC 40x53, ABC 1516/2

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Shane,

I have them both in stock.

What are you running them on?

The reason I ask is, a stock 1516-17-45% has 4.29" of cup stock.

That is a ton for most boats.

Let Me Know?

Mark Sholund
 
will be running new MAC 21 and New valvola 21, then eventually a nova 21dd,

the props in question were recommended by Blazer marine who designed the boat, and I'd be guessing they know their boat pretty well
 
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Shane the 1515 does really good on the Blazer Sport 20.

The 1516 is a little too much but they will work.
 
thanks Sam, sounds like the 1515 might be the go, I'm not going to race the boat, so it only has to run well, not crazy
 
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Shane & Sam,

ABC makes the 1515-17-45% and now the newest 1515-19-38%.

Just measured 4-1515-17-45% and they vary in cup from 3.10" to 3.91".

And I measured 9-1515-19-38% and they vary in cup from 2.81" to 3.91".

The 1516-17-45% works Very Well when Prepared Properly, and

matches well with the DD-21. Just thought I would share this with

you all. The DD-21 will pull a little more cup than the Beta-21 in stock

configuration. Now if you add a better Bouchie pipe the game changes.

Thanks For Reading This Morning,

Mark Sholund
 
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1515 I don't know the rest of the numbers, but it ran really good with the CMB Valvola almost 70mph. The 1516 don't know the rest, but took forever to get on pipe. Not a very good heat racing prop.
 
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Sam,

If you reduce the cup on the 1516-17-45% over 72 mph is possible.

The problem is keeping the boat on the water. A lot of hull lift with

the blazer design, ask Dave Roach how to reduce the hull lift with

the addition of strakes?

Enjoy Testing,

Mark Sholund
 
shoboat said:
Sam,

If you reduce the cup on the 1516-17-45% over 72 mph is possible.

The problem is keeping the boat on the water. A lot of hull lift with

the blazer design, ask Dave Roach how to reduce the hull lift with

the addition of strakes?

Enjoy Testing,

Mark Sholund
Click to expand...
I know all about his Sport 20. We race in the same district. But you can't finish a heat when your blowing them over at 72 mph. That's why I don't think that's a good heat prop.
Like a fellow boater said, once you get over 70 the Blazer Hulls are kites.

A 70 MPh Sport 20 is usually going to be a front runner anyways.

Sorry to Jack your thread Shane.
 
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At the end of the day, I just want a prop to run the boat for fun, I DONT RACE, and the nova 21DD wont be used for a while, I will be using a MAC as my first choice of engine, based on all this information , I will look at getting a 1515 prop
 
I can pull an ABC 1616 in heat racetrim with my whiplash with my AB Mods Spec .21DD... so yes engine has been modified so not a fair comparison of out of the box engines... Comes up and down like a light switch absolutely no problem pulling it. The problem i have is keeping the boat on the water when i want to run it this fast! This has been the biggest hurdle for me to get over with my whip. I have been having to prop down and run really wet and play it super safe to keep it on the water. Even slowed way down to speeds only in the mid 50s... I have a GPS and i see how fast people are going in the races here. Seems anything over mid 50s and people start blowing of in race water... and a lot more before that...

Real confirmed speeds > Internet claimed speeds.
default_smile.png
 
Samuel Hagan JR said:
shoboat said:
Sam,

If you reduce the cup on the 1516-17-45% over 72 mph is possible.

The problem is keeping the boat on the water. A lot of hull lift with

the blazer design, ask Dave Roach how to reduce the hull lift with

the addition of strakes?

Enjoy Testing,

Mark Sholund
Click to expand...
I know all about his Sport 20. We race in the same district. But you can't finish a heat when your blowing them over at 72 mph. That's why I don't think that's a good heat prop.
Like a fellow boater said, once you get over 70 the Blazer Hulls are kites.

A 70 MPh Sport 20 is usually going to be a front runner anyways.

Sorry to Jack your thread Shane.
Click to expand...

Sam once u get to a true upper 50s to 60mph they become kites in race water!
 
The secret to the whiplash sport 20 is to get it to vent under the hull.It packs to much air.The sponson depth needs to be deeper and deck needs to be changed for more air at the back for more lift.This is what I see in running the whiplash for 9 years.The 1515 or the 1516 prop are good race props fast and stable.
 
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Dave,

Does the back of the boat have any re-curve or rocker in it?

That would probably help exit the air under the hull easier,

don't you think?

Thanks For Reading,

Mark Sholund
 
Mark

The bottom of the boat is flat from the front, back to the transom.The fast elec guys don't have this problem because of the weight of the batteries.There has been passes over 100 mph with elec.in the whip so weight is a big thing for them.A nitro whip weight will be around 5-5 1/2 pounds and a elec.6-7 pounds.
 
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Dave,

So you just need to build a heavier boat to stay on the water

like the electric guys have?

It seems like you guys all have plenty of power, but cannot

use it all because the boat is too light? Adams boat could

pull just about anything we put on it last year, so maybe you

all are missing the weight and balance point on this set up?

I do not play with these Sport 20's here in District #2, but I

have helped a few go faster for quite some time now. Do

you guys ever test three bladed propellers?

Just Trying To Help Improve The Racing,

Mark Sholund
 

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