cosmosaure
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They say...but it's false !
Any Updates on Scubajets or Lefeets from actual users
- Thread starter AustinLakePumps
- Start date
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scubasharks
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DiveDiversions
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I always find the claims in these campaigns to be exaggerated and misleading and they never give all the details to be able to fact check them, i.e some kind of run time graph showing true battery depletion over run time.
If we do some basic maths, the 90 minute run time would mean that you could never go past 0.28 meters a second!
From the comment section:
"1. Battery Life:
The motor power will be limited to 500W for the 100Wh battery; running at the highest speed lasts about 30 minutes. You can get the most extended battery life at the lowest speed.
On the other hand, the motor power activates up to 1000W for the 160Wh battery. The speed and battery life will increase accordingly, depending on the environment, flow velocity, load, etc."
Battery = 160Wh
Max Speed 2.3m/s = 1000w
160/1000 = 16 minutes run time
50% speed 1.15m/s = 500w
160/500 = 32 minutes run time
25% Speed 0.57m/s = 250w
160/250 = 64 minutes run time
12.5% speed 0.28m/s = 125w
160/125 = 128 minutes run time
So realistically, its typical run time will only be around 30-40 minutes at best! (and that's probably being generous, given the lower efficiency of the propeller at low speed it will be way less.)
"With a weight of 5 pounds, LEFEET P1 will unleash its full potential as it propels you through the underwater adventure at an incredible speed of up to 2.3 meters per second or 5.1 miles per hour"
So that should actually read 5.1 miles per hour for no more than 16 minutes.
And as some people will reads the specs to mean it could do 7.6 miles given the "90 minute" run time claim, in absolutely best conditions, at it longest run time, it could maybe do around a total of 0.93 miles (1.5Km) in total distance.
As they say, if it sounds too good to be true, well it probably isn't!
If we do some basic maths, the 90 minute run time would mean that you could never go past 0.28 meters a second!
From the comment section:
"1. Battery Life:
The motor power will be limited to 500W for the 100Wh battery; running at the highest speed lasts about 30 minutes. You can get the most extended battery life at the lowest speed.
On the other hand, the motor power activates up to 1000W for the 160Wh battery. The speed and battery life will increase accordingly, depending on the environment, flow velocity, load, etc."
Battery = 160Wh
Max Speed 2.3m/s = 1000w
160/1000 = 16 minutes run time
50% speed 1.15m/s = 500w
160/500 = 32 minutes run time
25% Speed 0.57m/s = 250w
160/250 = 64 minutes run time
12.5% speed 0.28m/s = 125w
160/125 = 128 minutes run time
So realistically, its typical run time will only be around 30-40 minutes at best! (and that's probably being generous, given the lower efficiency of the propeller at low speed it will be way less.)
"With a weight of 5 pounds, LEFEET P1 will unleash its full potential as it propels you through the underwater adventure at an incredible speed of up to 2.3 meters per second or 5.1 miles per hour"
So that should actually read 5.1 miles per hour for no more than 16 minutes.
And as some people will reads the specs to mean it could do 7.6 miles given the "90 minute" run time claim, in absolutely best conditions, at it longest run time, it could maybe do around a total of 0.93 miles (1.5Km) in total distance.
As they say, if it sounds too good to be true, well it probably isn't!
DiveDiversions
Registered
I'm going to call this out
Pretty much sums up that video, given there is no other AD embedded in the video the kickstarter campaign is the paid promotion, there in turns the whole video is a paid review and most likely scripted by Lefeet.
Also, in the comments the reviewer responds to a question about battery life
The fact that this is the response pretty much validates the bogus aspect of the review.
I think you can pretty much take any video that is included as part of a Kickstarter campaign to be a paid biased review, especially given the reviewer has a pre-production model that they didn't independently purchase to do an unbiased review with.
And interestingly, Scubajet has all these things
The abrupt stopping is slightly annoying
And the remaining battery time and power/speed indications should be critical for any serious diving to understand the turn around point.
Lefeet also incorrectly compare the Scubajet as having only LEDs for indication where it actually has a full colour display, unlike the Lefeets small monochrome display (a monochrome OLED display is not a talking point)
DiveDiversions
Registered
It's been pointed out to me that my maths was slightly wrong in my post above regarding the battery run times for the Lefeet.
The mistake was that
Max Speed 2.3m/s = 1000w
160/1000 = 16 minutes run time <-- this is actually 0.16hours, not minutes and therefore needs to be x 60 to get minutes.
The corrected run times are:
Max Speed 2.3m/s = 1000w
160/1000 = (16*60) = 9.6 minutes run time
50% speed 1.15m/s = 500w
160/500 = (32*60) = 19.2 minutes run time
25% Speed 0.57m/s = 250w
160/250 = (64*60) = 38.4 minutes run time
12.5% speed 0.28m/s = 125w
160/125 = (128*60) = 75 minutes run time
Therefore the typical runtime will be around 20 minutes
And it could maybe do around a total of 0.78 miles (1.26Km) in total distance.
So it's actually far worse!
The mistake was that
Max Speed 2.3m/s = 1000w
160/1000 = 16 minutes run time <-- this is actually 0.16hours, not minutes and therefore needs to be x 60 to get minutes.
The corrected run times are:
Max Speed 2.3m/s = 1000w
160/1000 = (16*60) = 9.6 minutes run time
50% speed 1.15m/s = 500w
160/500 = (32*60) = 19.2 minutes run time
25% Speed 0.57m/s = 250w
160/250 = (64*60) = 38.4 minutes run time
12.5% speed 0.28m/s = 125w
160/125 = (128*60) = 75 minutes run time
Therefore the typical runtime will be around 20 minutes
And it could maybe do around a total of 0.78 miles (1.26Km) in total distance.
So it's actually far worse!
cosmosaure
Registered
Max speed is not 2.3m/s ! Definitly.
It's simply impossible with that small propellers.
So many absolutes from people who haven’t tried one…
I haven’t seen one let alone try one but I see a nitch for them, maybe.
I haven’t seen one let alone try one but I see a nitch for them, maybe.
