40,000 rpm........what's the problem

[madmikepags]

It has to be a 2100kv motor, I would imagine a 1530/1D I've run my P-rigger on this motor in the low 70's for heat racing so on 6 cell I would imagine 100 is pretty attainable.

[Rumdog]

He has posted vid of it in the past. Definitely a screamer!

[Gary]

Thanks guys. And yes Phil knows. I busted up 2 hulls before he built one renforceded with carbon fiber. It also has a 2200kv 1530 motor. Here is an old video running 92 when i started to get bit by the bug hard. Its very early in the morning so video kind of sucks. http://www.youtube.com/watch?v=mvi9KIth-kg

[kfxguy]

What is the green line every time you pass by?

[Gary]

Oh thats just the sound barrier being broken LOL . But really its just the direct sunlight into the lens of the camera....looks like a light prizem.

[kfxguy]

Oh thats just the sound barrier being broken LOL . But really its just the direct sunlight into the lens of the camera....looks like a light prizem.

Thats what i was thinking (sound barrier lol)

[flraptor07]

Thanks guys. And yes Phil knows. I busted up 2 hulls before he built one renforceded with carbon fiber. It also has a 2200kv 1530 motor. Here is an old video running 92 when i started to get bit by the bug hard. Its very early in the morning so video kind of sucks. http://www.youtube.com/watch?v=mvi9KIth-kg

What prop is on it here, I did a V series prop for my Phil Thomas that did the exact same thing when trying to get it jumped up, and I gave up. maybe I'll mess with it a little more.

[iridebikes247]

damn that thing is fast.

[urbs00007]

saw phil thomas

I am not sure about the fighter cats esc's and yes could be identical to and built from Alien Systems but they sure seem to be some robust looking controllers. Worst part is for high amp where else would one buy from with out spending crazy money? T S Davis I run 2- 5000mah 6s 70-140 Thunder Power in parallel.

just wondering if you are just trying to go as fast as possible, why are you carrying 2 batteries? why not just one 6-s pack or two 3-s in series?

[Rumdog]

High amp setups require 2p to supply consistent current. He's drawing a lot of current there. Plus, I'm sure the weight of the cells is aiding in keeping that beast planted, a bit.

[kfxguy]

just wondering if you are just trying to go as fast as possible, why are you carrying 2 batteries? why not just one 6-s pack or two 3-s in series?

With a boat, excess weight doesn't matter as much as a land vehicle. Usually you'll need more weight to keep it on the water anyway. With today's motors and batteries...having enough power to propel it usually isn't a problem. Flying out the water is

[T.S.Davis]

With a boat, excess weight doesn't matter as much as a land vehicle.

When going straight I agree.

For a heat racer it's a delicate balance. Somewhere I did the G force math. Made a spread sheet for different weights and speeds on a 1/6 mile turn. Can't find it now. It's significant when you start hanging a 15 pound boat from a turn fin and try to change it's direction 180 degrees. You end up fiddling with it to find the sweet spot. I don't feel there is a hard rule either way. I've had success with both heavy boats and with paper light boats........until ya crash. Paper boat is less than thrilled with any impact.

[HTVboats]

performance = weight to HP in motorsports. If the only way to keep a hull on the water is adding large amounts of weight with excess batteries you might want to see if prop. balance and some aerodynamics would go the same job? I run outboard tunnels and they are as hard as anything to keep on the water.
Just a thought.
Mic

[Rocstar]

With a boat, excess weight doesn't matter as much as a land vehicle. Usually you'll need more weight to keep it on the water anyway. With today's motors and batteries...having enough power to propel it usually isn't a problem. Flying out the water is

I disagree. Excessive weight is added load on the motors and controllers. It's more about weight distribution and cg when running at high speeds and keeping the boat flying level. Rum is correct.... the extra battery weight is required to power the boat, not a necessity to keep it on the water.

[kfxguy]

When going straight I agree.

For a heat racer it's a delicate balance. Somewhere I did the G force math. Made a spread sheet for different weights and speeds on a 1/6 mile turn. Can't find it now. It's significant when you start hanging a 15 pound boat from a turn fin and try to change it's direction 180 degrees. You end up fiddling with it to find the sweet spot. I don't feel there is a hard rule either way. I've had success with both heavy boats and with paper light boats........until ya crash. Paper boat is less than thrilled with any impact.

Thought going straight is mainly what we were talking about? Lol