Brazos River Rat ( Billy's ) Update

[73 Sanger Flat]

Yep, at 13 second, that should bee a least a 1/4 mile, if not more.

I think that I mis-calculated.  I overlooked the 6900 rpm and was basing my number on the 6500 as max.
If you go to 29's, that'll give you 7100 rpm, or close to that, 27's should give you around 7300.
I would definitely talk to JJ, he'll know.

You're getting your boat where it should be, and it sure looks pretty doing it.

:smile21:Someday, maybe I'll learn to read all of the words or numbers.

That looks better Jim on the gears changes .. I did not want to you think you was incorrect again so I was waiting for you to catch it ..  I am going to call Dallas about the Prop and ask him about what the tach recorded on the top end of the run .. Maybe he can shed some light on way it was bouncing from 6800-7000 like that .. Maybe it just wanted to run on out ..

 

[jimsplace]

jump.gif    Video of playback of tachometer  .. This at is 1/3 speed ..Pretty sure it is 12-13 seconds run .. I did not time it , but it mots likely a 1/4 mile or close to it ..

Flash to 6500 , pulled back to 5700 and toped out at 6900 RPM maybe more If I would have stayed in it .. My question is at the end of the run the Tachometer was bouncing from 6800-7000 RPM and I could actually feel it in the boat .. My question is what caused this .. Is the boat wanting to go ahead and run up in RPM or maybe the back of boat is lifting up causing the prop to slip more .. I do not have a good Video of the side of the boat when it did this ..

For 32's gears this engine is pulling them pretty good for a pump gas deal .. Hell I might actually learn how to drive it this year and get it dialed in .. 

Tachometer Playback 10-11-2015..

https://www.youtube.com/watch?v=TTddUtoo_4g

I wasn't far off with the 13 second time from the original video sound.
What I came up with was 12 1/2 to 13 seconds for the run from the tach video.
The tach starts to move up at the 9 second mark, and then starts to drop again at 44 seconds.

Write it down and keep the information for comparison later on.
Save the video too.
That's some good information.

I know I used that type of information for mine and it really helped.
    clap.gif

 

[jimsplace]

[quote author=Brazos River Rat ( Billy )

That looks better Jim on the gears changes .. I did not want to you think you was incorrect again so I was waiting for you to catch it ..  I am going to call Dallas about the Prop and ask him about what the tach recorded on the top end of the run .. Maybe he can shed some light on way it was bouncing from 6800-7000 like that .. Maybe it just wanted to run on out ..
[/quote]

With enough time and tries the correct answer will arrive.
It's very much like, 'If you put enough monkeys in a room with enough typewriters, they'll write all the great novels.'
    think.gif

 

[73 Sanger Flat]

jump.gif    Video of playback of tachometer  .. This at is 1/3 speed ..Pretty sure it is 12-13 seconds run .. I did not time it , but it mots likely a 1/4 mile or close to it ..

Flash to 6500 , pulled back to 5700 and toped out at 6900 RPM maybe more If I would have stayed in it .. My question is at the end of the run the Tachometer was bouncing from 6800-7000 RPM and I could actually feel it in the boat .. My question is what caused this .. Is the boat wanting to go ahead and run up in RPM or maybe the back of boat is lifting up causing the prop to slip more .. I do not have a good Video of the side of the boat when it did this ..

For 32's gears this engine is pulling them pretty good for a pump gas deal .. Hell I might actually learn how to drive it this year and get it dialed in .. 

Tachometer Playback 10-11-2015..

https://www.youtube.com/watch?v=TTddUtoo_4g

I wasn't far off with the 13 second time from the original video sound.
What I came up with was 12 1/2 to 13 seconds for the run from the tach video.
The tach starts to move up at the 9 second mark, and then starts to drop again at 44 seconds.

Write it down and keep the information for comparison later on.
Save the video too.
That's some good information.

I know I used that type of information for mine and it really helped.
    clap.gif

Jim -- How did you get 12.5 -13.0 seconds .. If I take the number that you show I started is 9 and let off on is 44 .. So 44-9 = 35 seconds and multiplied by 1/3 speed ( .33) I come up with 11.55  .. What I'm i doing wrong ??  It is close to 12.0 and maybe it is 13.00 .. Hell I don't know ..
I just want to know why the tach was doing that at the end of the run ?? I could feel the boat doing something .. Felt like prop slip at 112-113 mph ??

 

[jimsplace]

Well crap.
35 divided by 3 = 11.667 seconds.
You're right, I must have had a bad hair day.

:smile26:
How can I be wr-0-0-0-0-ng twice in the same day?
Never mind, I might get way to many replies from people who I thought were friends.



Send them to school, buy them books and they still can't add.
DUMB CHIT'S!!

 

[73 Sanger Flat]

Well crap.
35 divided by 3 = 11.667 seconds.
You're right, I must have had a bad hair day.

:smile26:
How can I be wr-0-0-0-0-ng twice in the same day?
Never mind, I might get way to many replies from people who I thought were friends.



Send them to school, buy them books and they still can't add.
DUMB CHIT'S!!

It is OK Jim . I just wanted to see if I was adding it wrong .. Either way , it should be close to a 1/4 in a ME boat

 

[73 Sanger Flat]

I sent Video to the prop guy and I talked to him on the phone .. he does not recommend me taking a nickel out because the prop will be at 1/8 from the strut and it will touch then .. He will  work on the prop to get it under the boat more .. I will wait for a few weeks before I pull it off and send to him ..

 

[Disturbed]

clap.gif

 

[Carnivalride]

Test results this morning with Trey and Dad at Steel Creek .. Water was pretty slick and got two good runs in .. Then tried a couple more and water was to rough for me and only ran it out to 107 on the 3rd run ..

1st run it ran 112 mph and 2nd run she ran 113 mph .. On the first run Dad and Trey could see 1/2 the skag and went 112 .. On the second run went 113 and they could not see any of the skag .. Not sure what or Why ???  .Maybe water to slick and boat stuck ?? . Maybe it still trying to nose over , might need to remove one nickel ???.. Engine pulled to 6900 RPM and sounded really good .. It did better coming out of the hole , not sure if the 1 degree of timing helped or the removal of the air cleaner , but it did better .. She is getting there slowly ..I need to go play the tach back again , but I think it flashed to 6500 pulled back to 5700 and then back to 6900..

One is fuel pressure run , plenty of pressure , hard to see , but pretty sure it never dropped below 6.0 lbs ..
The other is a view from the top of the scoop ..

https://www.youtube.com/watch?v=PvAskURKi2M
https://www.youtube.com/watch?v=GkMUjuALiCo

Congrats Billy it sounds great and 112 & 113 is real respectable for pump gas!!!  clap.gif

 

[Carnivalride]

max HP was at 6700 rpm .. I don't think I will change gears yet .. I want to tweak on it some and I think I can get 7000 rpm out of it with these 32's and that will be 115 mph .. If I drop down I might go with 27 or 29 .. I don't want to go over 7200 rpm max .. I will consult with JJ and get him to pick the gear for me later that will gain me about 300 rpm ..Might not be worth it .. this engine likes to be under a load ..

Pretty sure that was a 1/4 mile run give or take a couple hundred feet ..

not to bad of a test run to pick up 3 mphs..

How free is the boat? If you can free up the boat it'll gain mph even without more rpm and and if it does gain a few rpm its even faster yet.  jump.gif

 

[Carnivalride]

Yep, at 13 second, that should bee a least a 1/4 mile, if not more.

I think that I mis-calculated.  I overlooked the 6900 rpm and was basing my number on the 6500 as max.
If you go to 29's, that'll give you 7100 rpm, or close to that, 27's should give you around 7300.
I would definitely talk to JJ, he'll know.

You're getting your boat where it should be, and it sure looks pretty doing it.

:smile21:Someday, maybe I'll learn to read all of the words or numbers.

That looks better Jim on the gears changes .. I did not want to you think you was incorrect again so I was waiting for you to catch it ..  I am going to call Dallas about the Prop and ask him about what the tach recorded on the top end of the run .. Maybe he can shed some light on way it was bouncing from 6800-7000 like that .. Maybe it just wanted to run on out ..

How well is your tach isolated? Electric tachs don't seem to like vibration. You may not feel it but maybe theres some vibration and your rubber mount has got stiff.???

 

[73 Sanger Flat]

max HP was at 6700 rpm .. I don't think I will change gears yet .. I want to tweak on it some and I think I can get 7000 rpm out of it with these 32's and that will be 115 mph .. If I drop down I might go with 27 or 29 .. I don't want to go over 7200 rpm max .. I will consult with JJ and get him to pick the gear for me later that will gain me about 300 rpm ..Might not be worth it .. this engine likes to be under a load ..

Pretty sure that was a 1/4 mile run give or take a couple hundred feet ..

not to bad of a test run to pick up 3 mphs..

How free is the boat? If you can free up the boat it'll gain mph even without more rpm and and if it does gain a few rpm its even faster yet.  jump.gif

hell Loren i don't know anymore .. 1st pass it was up in the air  1/2  fin showing then 2nd pass it was flat in the water  but went faster .This is according to my dad and Trey standing on the shore . It did not feel right on the 113 mph pass at the end when i could tell the prop was slipping .. I think it was nosing over and plowing water .. I think it need to be up in the air more myself .. I think the prop need to be under the boat more .. I need a couple of video camera and still camera going to see what this boat is doing before I get wet ..

 

[Carnivalride]

Well crap.
35 divided by 3 = 11.667 seconds.
You're right, I must have had a bad hair day.

:smile26:
How can I be wr-0-0-0-0-ng twice in the same day?
Never mind, I might get way to many replies from people who I thought were friends.



Send them to school, buy them books and they still can't add.
DUMB CHIT'S!!

It is OK Jim . I just wanted to see if I was adding it wrong .. Either way , it should be close to a 1/4 in a ME boat

Looks pretty similar to mine from the videos I think you can run ME, you might not even need a gear change but I'd have some available just in case. ET and consistency is what wins not mph.  crazy.gif

 

[Disturbed]

Well crap.
35 divided by 3 = 11.667 seconds.
You're right, I must have had a bad hair day.

:smile26:
How can I be wr-0-0-0-0-ng twice in the same day?
Never mind, I might get way to many replies from people who I thought were friends.



Send them to school, buy them books and they still can't add.
DUMB CHIT'S!!

It is OK Jim . I just wanted to see if I was adding it wrong .. Either way , it should be close to a 1/4 in a ME boat

Looks pretty similar to mine from the videos I think you can run ME, you might not even need a gear change but I'd have some available just in case. ET and consistency is what wins not mph. crazy.gif

EXACTLY!!!!  clap.gif clap.gif clap.gif clap.gif

 

[73 Sanger Flat]

I am hoping once I get it dialed in , it will pick up a few more RPM with  MPH also .. I don't really care about winning at the races . it is just going with my Dad and competing as a  Father and Son team .. I still think it is geared too high for a 1/4 mile , but I do not want to hurt this engine ..
JJ normally has gears and he is only 45 minutes away but Thanks for the Offer .. JJ would be the one changing the gears for me anyway .. I don't want to screw the Casale box up .. 
Once I get the prop back from Dallas , maybe that will help the boat more than anything .. The plate adjustment has helped , but i think it need prop lift ..

 

[73 Sanger Flat]

Loren -- It could be vibration on the steering column causing the Tach and the jumping  , but I could feel the boat doing something weird .. I thought it was slipping the prop .. I thought it was going to pull on through the RPM or I was fixing to get wet , either way I decide to just get out of it .. Since the two on shore said they could not see any skag , I think it was slipping the prop and plowing water .. But at the same time , they said the boat looked like it was higher in the water and more level ..

 

[Carnivalride]

Loren -- It could be vibration on the steering column causing the Tach and the jumping  , but I could feel the boat doing something weird .. I thought it was slipping the prop .. I thought it was going to pull on through the RPM or I was fixing to get wet , either way I decide to just get out of it .. Since the two on shore said they could not see any skag , I think it was slipping the prop and plowing water .. But at the same time , they said the boat looked like it was higher in the water and more level ..

The faster you go and the more propshaft rpm you have the more tail lift you'll have so it could be rolling the boat over and belly sliding. Usually you notice the nose is lower on the horizon and the boat moves around a little more than usual. I don't know a better way to explain it than that.

 

[73 Sanger Flat]

I think it could be doing that ..with all the changes we made , I am not used to the way the boat is handling right now .. To me it does not feel loose at all on the wide open passes , but I have notice on shutdown it like to walk around more  than with the old prop and plate settings .. Before I would just come completely off the gas and let her come back down quick , but now i will back off a little and let his settle down first .. I ned more video of the boat from the side ..

 

[73 Sanger Flat]

next outing I will mount the camera back to the deck of the boat so we can see if it dips down and then maybe mount it to the side again and see where the water is hitting ..

 

[jimsplace]

Billy
Were you on the up peddle, holding it?
If I recall, didn't you say the outside plates were up more than the center plate?
If that's the case, the center plate could be holding the nose down, it doesn't take much to raise or lower the front of the boat a few inches.

I don't know if there is a generally right or wrong on this, but my plates are the same all the way across.
Maybe Loren has an opinion or has already suggested something.
Of course, when it comes time to fine tune everything, each boat will want its own thing.
You're either at the point of fine tuning or already there.

I wouldn't worry too much about the fluctuations with the tach.
It looks to be very minor from what I'm seeing, and if your reference is the slowed down version, I doubt you would even see it in real time.
Vibration could contribute also, but on the big end, everything seems really smooth to me.
It could just be the death grip on the steering wheel and obvious lack of good judgement on my part.
    :smile17: