Freestyle How much torque do an original 701 motor produce?

R

Ratking

Location
New Jersey
As topic says.
If you know how much other motors produce as well please tell me.

I am playing with the idea of making an electric stand up, just because it is silent and could be used everywhere.
I know it would require a big motor and a lot of batteries, but its a start to gather information about the ice machines first.


Even if I just got the power of a kawasaki 650 or even a 550 it would still be worth it. Think about a totally silent ride, no water leaks, no oil or fuel.
The whole jet could be slimmer and with all the components at the bottom of the hull, stability would greatly increase.

I don't know if it would be feasible, but I would love to try
 
Freakrider

Freakrider

X247
Location
Tampa Bay area
If you could make an electric motor that backflips an aftermarket hull with video proof, then maybe...Hmmm... nah us guys would still want to make alot of noise during the tricks...imo.
 
agua

agua

FIshing for Stand ups
Location
Seminole, Fl
Jump On It said:
If you could make an electric motor that backflips an aftermarket hull with video proof, then maybe...Hmmm... nah us guys would still want to make alot of noise during the tricks...imo.
Click to expand...

2 strokes are banned in some places though

I would look for some kind of dyno graph.

Also how much cooling would a motor need? You could seal the hull up pretty well if it doesn't need a whole lot.
 
R

Ratking

Location
New Jersey
Dyno701SJ.jpg

Found a dyno paper of a stock sj in the dyno tread :cool:
I am impressed with the numbers. It's gone be hard to beat that with an electric setup.
It's not hard to find a motor that would beat that, but I don't even dare to think what that would cost me.
I still think it would be a good idea, but its too expensive at the moment.
 
score602

score602

Location
Amity Harbor, Long Island
It would be hard to keep the weight down, an electric motor with equivelant tq and hp would weigh close too or more then a bare 701... Now add a good amount of batteries, inverter,electronics and your way up there
 
iangdesign

iangdesign

Cats, lots of cats!
Location
United States
Check you tube...there are about 10 or so vids of electric jet ski trials.

I don't see it taking off for 10 or more years...until electric cars are more refined.

I was watching Motorweek last week and they featured an electric motorcycle with about a 100 mile range. Cool but seems pointless at this time...why do you own a motorcyle? To get out and away from everything. If you have to charge the battery after a two hour ride, you are not accomplishing your goal. Same thought process applies to jet skiing IMO.

Nothing will ever get down without innovators though...so get after it! :)
 
R

Ratking

Location
New Jersey
iangdesign said:
Check you tube...there are about 10 or so vids of electric jet ski trials.

I don't see it taking off for 10 or more years...until electric cars are more refined.

I was watching Motorweek last week and they featured an electric motorcycle with about a 100 mile range. Cool but seems pointless at this time...why do you own a motorcyle? To get out and away from everything. If you have to charge the battery after a two hour ride, you are not accomplishing your goal. Same thought process applies to jet skiing IMO.

Nothing will ever get down without innovators though...so get after it! :)
Click to expand...

I agree and disagree.

First off, I did no find any video of any electrified stand up on youtube? I've been looking for that all over the internet with no luck.

Second, I've built myself an electric bike with more power than I dare to unleash. Not because I have such massive motor, but the weight is so low and I got massive torque compared to the weight. Its easy to charge in under two hours and I have a range about 25 miles with plenty of acceleration. I don' mind the short range, I am tired before the pack is empty anyway. Its about having a nimble, explosive bike that I can operate everywhere because it is just a bike.

The same goes for a jet ski. If I could build a jet that could provide me with 20 min of fun I would be all over it. I haven't met someone that can drive a jet or a mx bike hard for more than minutes before they need a break.
I know this is not for everyone, but I will try it out when I feel I got enough tech to pull it off
 
kevbo

kevbo

Location
dfw
Ratking said:
As topic says.
If you know how much other motors produce as well please tell me.

I am playing with the idea of making an electric stand up, just because it is silent and could be used everywhere.
I know it would require a big motor and a lot of batteries, but its a start to gather information about the ice machines first.


Even if I just got the power of a kawasaki 650 or even a 550 it would still be worth it. Think about a totally silent ride, no water leaks, no oil or fuel.
The whole jet could be slimmer and with all the components at the bottom of the hull, stability would greatly increase.

I don't know if it would be feasible, but I would love to try
Click to expand...
Our jet pumps will consume 50-100HP between 6000-7000 RPM. It will take 1KW in to get 1HP out. That equals 50-100 car batteries for one hour of full throttle. An 80lb lithium battery may finish a short flatwater routine. That is what the Killacycle drag bike has and can make over 300HP for a few seconds.
 
R

Ratking

Location
New Jersey
Nice to know, thats a lot of loss.
I hope no one still use lead acid batteries for EV's anymore. I only use li-po or li-mn chemistry. I actually think the chemistry I use have more power and energy density than Killacycle, because they use LiFePO4 for more safity.
In my bike I go a 20Ah pack @ 44.4v. Fully charged at 50v and can pump out 400 amps to it is empty. 400*50=20kw, still not close to a stock superjet. So as I said earlier, its going to cost a lot of money.
Maybe a 50Ah pack with a 50kw motor would do the trick for a short run
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
Ratking said:
Nice to know, thats a lot of loss.
Click to expand...

Not really, that's a 75% efficiency.


I hope no one still use lead acid batteries for EV's anymore. I only use li-po or li-mn chemistry. I actually think the chemistry I use have more power and energy density than Killacycle, because they use LiFePO4 for more safity.
In my bike I go a 20Ah pack @ 44.4v. Fully charged at 50v and can pump out 400 amps to it is empty. 400*50=20kw, still not close to a stock superjet. So as I said earlier, its going to cost a lot of money.
Maybe a 50Ah pack with a 50kw motor would do the trick for a short run
Click to expand...

You want to use LiPO? I hope you're going to pad it real well.
How much current that battery can put out depends on it's C factor. And the power isn't quite as simple as 400*50 = 20kW. The motor controller will eat up some of it.
 
kevbo

kevbo

Location
dfw
Find a way to use remote batteries with a tether. The performance could far exceed anything we have now.
 
A

aramis

Location
Rochester, NY
I think you're all missing the boat (haha, see what I did there?)...we don't need any batteries. Two electrodes hanging under the ski into the water is all you need. Get that pesky electrolysis problem figured out, make a water fuel cell and you're golden.

You can ride forever...well, al least until you've dried up the lake. Woohoo! I'm off to the patent office!
 
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