Twin XLX Zonda what TP Motor and props ????

[Speedfreek]

So it looks like a 4060 1950kV for about a handfull of runs
What do you think, good to go ?

[Old School]

Have a temperature gun handy and maybe a couple of slices of bread to toast on the motor.

[Speedfreek]

Have a temperature gun handy and maybe a couple of slices of bread to toast on the motor.

Really?
Not that i am doubting you but other forum member is running 2050 ish kv doing 107 mph

[rol243]

Those kv,s on 6s are ok for saw but not oval stuff.

[Old School]

Really?
Not that i am doubting you but other forum member is running 2050 ish kv doing 107 mph

How many times did the operator achieve his 107 mph mark? Perhaps once only. The same boat can achieve a top speed one day only to fail miserably on the next run. Outright speed is not just the number of kv's a motor has. As mentioned earlier caution should be adhered to. Hull tuning, water conditions, prop size, battery capacity all need to be taken into account. Even attaining 80 mph will be a milestone, let alone exceeding the ton.

The hull will need considerable modification before trying SAW runs, look to the hull mods "fweasel" is doing to a Genesis hull for SAW running in the boat building forum section. Speed is not just a powerful high revving motor. A blowover at speed may well destroy the hull with little left to float.

Outright speed is one of my son's ambitions so I understand your thinking, however, take small steps, gradually increasing prop size to ensure the hull settings and electronics are right.

[Speedfreek]

How many times did the operator achieve his 107 mph mark? Perhaps once only. The same boat can achieve a top speed one day only to fail miserably on the next run. Outright speed is not just the number of kv's a motor has. As mentioned earlier caution should be adhered to. Hull tuning, water conditions, prop size, battery capacity all need to be taken into account. Even attaining 80 mph will be a milestone, let alone exceeding the ton.

The hull will need considerable modification before trying SAW runs, look to the hull mods "fweasel" is doing to a Genesis hull for SAW running in the boat building forum section. Speed is not just a powerful high revving motor. A blowover at speed may well destroy the hull with little left to float.

Outright speed is one of my son's ambitions so I understand your thinking, however, take small steps, gradually increasing prop size to ensure the hull settings and electronics are right.

O Yea for sure, so do you really think the D wind 4060 1950kV is no good ?
What would you recommend for 80 ish mph ?

[Old School]

I am not criticising your choice of motor as I am very fond of TP Power motors, having them in two self righting hulls (4050 and a 4060) plus two 4070 TP's set aside for a 1300 mm cat project. For high speed SAW runs it is most likely a very good choice. All I am saying is tread with caution rather than jumping into the deep end. High speed running can be an expensive past time.

[Speedfreek]

I am not criticising your choice of motor as I am very fond of TP Power motors, having them in two self righting hulls (4050 and a 4060) plus two 4070 TP's set aside for a 1300 mm cat project. For high speed SAW runs it is most likely a very good choice. All I am saying is tread with caution rather than jumping into the deep end. High speed running can be an expensive past time.

Fair enough, i did a run today with the SSS 3675 i think, 1650kV 45 1.6 cnc prop with the seaking 180A esc and it's ok but not fast enough for me thats all, my rc car does 144 mph i am just use to going fast i tried to gps the speed with my Garmin forerunner 301 but no good on the inside of the lid.

[NativePaul]

Looking for best of both worlds run time and speed 80mph

Speed and runtime are a compromise, if you want a 42" cat to do 80mph the runtime isn't going to be long at all, you will be looking at well under 2minutes max, and you equipment would thank you if you kept it to just a few seconds

[Speedfreek]

How many times did the operator achieve his 107 mph mark? Perhaps once only. The same boat can achieve a top speed one day only to fail miserably on the next run. Outright speed is not just the number of kv's a motor has. As mentioned earlier caution should be adhered to. Hull tuning, water conditions, prop size, battery capacity all need to be taken into account. Even attaining 80 mph will be a milestone, let alone exceeding the ton.

The hull will need considerable modification before trying SAW runs, look to the hull mods "fweasel" is doing to a Genesis hull for SAW running in the boat building forum section. Speed is not just a powerful high revving motor. A blowover at speed may well destroy the hull with little left to float.

Outright speed is one of my son's ambitions so I understand your thinking, however, take small steps, gradually increasing prop size to ensure the hull settings and electronics are right.

I want more then 2 min 5 to 8 would be good .
I hear what your saying on the last part, of course i would start with the smallest prop and tune stingers accordingly i understand
Here is my run today fpv https://youtu.be/JcfDWQYG9bg.

[NativePaul]

Physics

[NativePaul]

Sorry but 80mph with a 42" cat for 5-8 minutes on 6s is just not realistic, unless your definition of 5-8 minutes is 1x 80mph pass, then 5-8 minutes of tooling around at 30-40mph. You need to readjust either your speed or runtime expectations.

80mph is possible, but you wont get anything like 5-8 minutes runtime at high throttle levels.

5-8 minutes is possible, but not at anything like 80mph, 50-55 would be more realistic, and then only if you meant 6s1p 5000mAh per side for 10000mAh total, if your total capacity is 5000mAh I think you would be doing very well to crack 40mph for 5 minutes.

[urbs00007]

I want more then 2 min 5 to 8 would be good .
I hear what your saying on the last part, of course i would start with the smallest prop and tune stingers accordingly i understand
Here is my run today fpv https://youtu.be/JcfDWQYG9bg.

nice video. ever think of turning camera around and driving with fpv goggles? by the way, what camera are you using?

[Speedfreek]

nice video. ever think of turning camera around and driving with fpv goggles? by the way, what camera are you using?

Lol, just a cheaper alternative to the overpriced go pro, ThiEYE Edge

[Speedfreek]

Sorry but 80mph with a 42" cat for 5-8 minutes on 6s is just not realistic, unless your definition of 5-8 minutes is 1x 80mph pass, then 5-8 minutes of tooling around at 30-40mph. You need to readjust either your speed or runtime expectations.

80mph is possible, but you wont get anything like 5-8 minutes runtime at high throttle levels.

5-8 minutes is possible, but not at anything like 80mph, 50-55 would be more realistic, and then only if you meant 6s1p 5000mAh per side for 10000mAh total, if your total capacity is 5000mAh I think you would be doing very well to crack 40mph for 5 minutes.

Yea, a bit of wishful thinking it wont be just flat out it will be like you said in the first paragraph
O well it is what it is.

Ordered 2X TP 4060 1950Kv cans for a really good price for the XLX to punish
Thanks again guys for your knowledge on the subject