Help outrigger info

[tjsb]

I have many sizes and they all will run down a 6500 mah battery in about 70 seconds.
For example my 3 cell running in oval trim at 60 mph will run for about 70 seconds before battery cut off at 3.5

Anyone else have better results?

[RaceMechaniX]

You need to better fill us in on the background. What boat, what motor, what esc, what prop, is the rigger free or stuck, what battery, etc.

It sounds like your have very high amp draw and/or a sticky boat that is not running freely. A small slippery 3S rigger should run for 120-150seconds on a 6500mAh pack at 60mph.

[tjsb]

27 inch rigger, ZEEE 120c 6500 mah,tp 3640 3850 kv,150 amp ESC,
props that I can get to 60 mph are 1614-38/4519/abc h-2/x642

they all run for the same amount of time

Show a rigger that can run 60 for 2 minutes please

[Xrayted]

You can get this exact same effect if you're using terrible quality batteries, and your voltage is sagging drastically under load, ending the run prematurely

The voltages may bounce right back up to what appears normal if you test them with no load, but will bottom out again instantly as soon as you apply a load

you can test this easily with a voltmeter. Does the total pack voltage when tested after 70 seconds really equal 3.5 V per cell? If so, then you have a problem in your set up somewhere causing extremely high current draws.

if not, then your batteries are crap and the voltage is sagging too much under load

[Bande1]

it should take at least 2400w-2800w range to run 60mph. divided by 11v it should be pulling 220A-250A. 70 seconds is a tad low but not by much from my experience with cheaper batteries. A race at 60mph should be about 5 laps @ 16-17 seconds a lap. plus light milling. 90 seconds or so.

people seem to have a hard time accepting Lipos really only last in the 60-120 seconds range.

[NativePaul]

That sounds very inefficient, is it a heavy boat? We hit about 55 for 6 minute (+10 second mill, +inlap) races with Naviga hydro1s on using 60wh of a 3s 6200-7000 pack, typically with 2860 motors 3400-3900kv, spinning 34-37mm props, AUW about 1100g.
Mine is only 23" but is noticeably smaller than typical, the Ecomaster is 27.5", and the H&M is over 28, and i think most of the current artisinal hulls are similar size.

[Bande1]

That sounds very inefficient, is it a heavy boat? We hit about 55 for 6 minute (+10 second mill, +inlap) races with Naviga hydro1s on using 60wh of a 3s 6200-7000 pack, typically with 2860 motors 3400-3900kv, spinning 34-37mm props, AUW about 1100g.
Mine is only 23" but is noticeably smaller than typical, the Ecomaster is 27.5", and the H&M is over 28, and i think most of the current artisinal hulls are similar size.

to get 6 minutes on a 7000mah battery you have to run a maximum of 70A. which is like 35mph. Perhaps you mean 55Kmh? 60mph = 96kmh

Screenshot 2024-05-16 12.12.07 AM.jpg

[Ivan Kozyakov]

Guys, a little offtopic. What is the difference between boat types rigger, outrigger, hydro? For me it's the same class of three point boats.

[koen]

a hydro1 runs for 6min between 90 and 100km/h and a hydro2 6min and 110 and 120 km/h

[Bande1]

a hydro1 runs for 6min between 90 and 100km/h and a hydro2 6min and 110 and 120 km/h

in the US we run 6 lap races on a 1/6th mile course to equal 1 total mile. Electric couldn't go the distance at competitive speeds so the organizations lowered electric classes to 5 laps, or .833 miles. the 4s (p-limited) classes run 3000w motors and generally go around 15 seconds a lap.

[NativePaul]

An outrigger or rigger for short is a type of hydro with the sponsons attached to booms rather than being part of the body.

[NativePaul]

to get 6 minutes on a 7000mah battery you have to run a maximum of 70A. which is like 35mph. Perhaps you mean 55Kmh? 60mph = 96kmh

[ATTACH=CONFIG]179477[/ATTACH]

No, 55mph like I said, and with the mill, in lap and only using 60wh of the battery were averaging about 55A not 70A.

Maybe don't assume everyone's boat are as inefficient as yours.

[Peter A]

Try a better battery!

[RaceMechaniX]

NAVIGA racing is quite a bit different than the US based heat racing, but their performance is equally impressive. They run for 6 min as others above mentioned and speeds are near 60mph. Those boats are setup for absolute efficiency. It sounds like your boat is running wet or the combination is not very efficient hence your run times are not great. As mentioned by others, you need to reduce the current draw and free up the boat to achieve 2 min at 60mph.

[tjsb]

How do I upload a video from my pc ?