32" hotr 90+mph

[JPriami]

Congrats Howard!! :D

[dana]

its funny how all the sudden gps is unreliable when howard shows his top speed. christ guys... when its your gps i bet its right on. nobody wants to believe this guy is getting these speeds. congradulate him already

[keithbradley]

Nice vid!

If you do use the GPS, you need to bring it in more often so you can take multiple readings. I GPS some of my boats, but I have been GPS-ing cars for a while too. 2 things will consistantly give false readings on a GPS:

1) If it looses satelite signal even for a fraction of a second, the speed will usually jump up

2) In the event of a crash/flip, speed almost always takes a jump up.

This is just my experience. I have gotten some pretty impressive false positives before. After a while, you will just know what to expect, and if its too good to be true, it probably is.

Was there any damage from the flip?
Also, you mentioned your COG was way off. Which way?

[Howard Lee]

I agree. The boat must run straight only, no flying no swift-sudden turning.

Howard this is a general comment and not particularly for you.
Honestly the boat handles very well considering also the water condition.

Maybe your right, them were the last 3 run of a 1 hour i spent adjusting the weights to get the balance right. The batteries were at 3.71 a cell on them runs. I will plan another run soon and wait on my wake to pass so there is no flying.

[DISAR]

When using the max speed measurement on a GPS unit the software doesnt care if the speed is in any one axis. Since that measurement is based on a acceleration calculation if any one of the 3 axis is moving at a faster rate then say the other 2 axis it uses that one value during its sampling. Thats why its prone to such errors. Its not reliable in the form we use it for. Move another knotch up the GPS quality ladder and you will see why they use differential recievers for things like moving vehicles. Aircraft/Boats/Bomb Guidance.

John

I agree. The boat must run straight only, no flying no swift-sudden turning.

Howard this is a general comment and not particularly for you.
Honestly the boat handles very well considering also the water condition.

[Howard Lee]

I made some changes in the setup but its raining now. If it stops i will go out for another run.

[Howard Lee]

This is only my 1st test run. Give me a little time and you can have a state trooper radar me if you like. This is the new 500 gps, garmin said it 100%.

[m4a1usr]

I dont think when it flip it was at top speed. Maybe the first run of the video was the top speed.

When using the max speed measurement on a GPS unit the software doesnt care if the speed is in any one axis. Since that measurement is based on a acceleration calculation if any one of the 3 axis is moving at a faster rate then say the other 2 axis it uses that one value during its sampling. Thats why its prone to such errors. Its not reliable in the form we use it for. Move another knotch up the GPS quality ladder and you will see why they use differential recievers for things like moving vehicles. Aircraft/Boats/Bomb Guidance.

John

[m4a1usr]

I made the first test run. I didn't make 90 but i didn't think i would on the first run. I balanced it to my genesis and was way off. I will made some adjustments and give it another try. I don't think i will have a problem getting to 90, this thing is fast.

Since you are running in a narrow straight canal you have the perfect opportunity to see the true speed you are running at. GPS readings will not impress anyone who knows how GPS works. They are subject to far too many variables to trust as a bonafide reading. You need to use a couple friends with stop watches and 2 bouys. Then you will have a reliable measurement method. Its not perfect, but its far more accurate then any handheld GPS unit. I bet you see a difference right away. I know I did once I started using the bouys. Typical error rate is about 10% but it can be higher.


You still have the fastest looking HOR cat I have seen on video yet!

John

[DISAR]

maybe

do you have any trim tabs on it? Is there any "secret"

[Howard Lee]

I dont think when it flip it was at top speed. Maybe the first run of the video was the top speed.

[DISAR]

looks good, in saw runs speed counts only without flying-flipping

[Howard Lee]

[url]http://www.youtube.com/watch?v=

[DISAR]

The idea is correct with the high rpm, very very fast boats have 40-50000 rpm unloaded. However, the 230 is too big I think, may cook your motor. 90 mph for the HOTR cat is unbelievable, speed counts only when the boat stays on the water. I don't believe speeds when I see boats up in the air and then upside down and then they bring the gps out and showing high speeds, this speed was at the flying moment.
Balance of the boat and glass water are must.

[Howard Lee]

Im downloading a clip now. The last run has a nice crash.