Flattie DRAG BOAT Top Speeds...

[Sharp shooter]

With your first few answers I know more than I did a few minutes ago so YES, it does help...

Do you know anything about the bottom of the K69 Freedom Child (I'm thinking in terms of their KILO runs over the last few years at a buck 45+)?

It's an APBA legal K boat bottom. I'm sure it's blueprinted to the hilt.

[SnoC653]

My understanding is there are things that make the boat more stable in a straight line but hurts the ability to turn and vice versa. Chines and tunnels and strakes are examples. Reducing the wetted surface area also makes the boat faster (in theory). So the further back on the hull or plates the boat rides the faster it could be. But, too nose high is unstable and not high enough is too wet to be fast enough. And that just covers bottom basics. You still have a whole other topic of balance, HP, Torque, prop diameter, prop pitch, prop cup, and aero/fluid dynamics which all affect the handling and drive-ability of the boat.

[2manymustangs]

It's an APBA legal K boat bottom. I'm sure it's blueprinted to the hilt.

My understanding is there are things that make the boat more stable in a straight line but hurts the ability to turn and vice versa. Chines and tunnels and strakes are examples. Reducing the wetted surface area also makes the boat faster (in theory). So the further back on the hull or plates the boat rides the faster it could be. But, too nose high is unstable and not high enough is too wet to be fast enough. And that just covers bottom basics. You still have a whole other topic of balance, HP, Torque, prop diameter, prop pitch, prop cup, and aero/fluid dynamics which all affect the handling and drive-ability of the boat.

BTW, I stood back and quietly watched Dave meticulously adjust/check the plates mid way through the Long Beach event, for about 30-45 minutes... That was pretty amazing to see what he ended up with... (it might have been with Robbie on the SS1)

It was NOT AT ALL what I expected but it certainly made me say Hhhmmmmmm (thinking of the plates being an extension of the bottom...)


As for the bottom (blueprinted to the hilt), I agree totally. I'll wager the bottom of that hull (K69) has had more study than any one flat bottom out there knowing the last 6-7yr history and knowing Rank Daddy&Gordy...

[2manymustangs]

Just found this on the LUCAS DRAG BOAT site:

Top Alcohol Flat 641 Nightmare C.Heidemann/ J.Heidemann 165.893 MPH November 2011 World Finals, Firebird Raceway

[Sharp shooter]

Just found this on the LUCAS DRAG BOAT site:

Top Alcohol Flat 641 Nightmare C.Heidemann/ J.Heidemann 165.893 MPH November 2011 World Finals, Firebird Raceway

Not sure why you're posting this. Please elaborate.

[2manymustangs]

Not sure why you're posting this. Please elaborate.

WHile looking for the results from last weekend at Wheatland I found the above info on the RECORDS tab, (old info a few years old). The MPH is pretty far up there for the TAF class... I guess at one point over the last few years TAF 641 was holding the record w/ 165.xx MPH...

[Sharp shooter]

WHile looking for the results from last weekend at Wheatland I found the above info on the RECORDS tab, (old info a few years old). The MPH is pretty far up there for the TAF class... I guess at one point over the last few years TAF 641 was holding the record w/ 165.xx MPH...

Considering there are runnerbottoms that have ran much faster on many occasions, I don't see what you're getting at....

[2manymustangs]

Considering there are runnerbottoms that have ran much faster on many occasions, I don't see what you're getting at....

Provide me with the link to the certified/records or details and I will remove what I copy/pasted from the LUCAS DRAG boat site and replace it with the info you provide me...

In my mind it gets to the point of "consistently obtainable AND safe top speeds of flat bottom drag boats" OR flat bottoms in general (circle boats included)...