Search found 77 matches
- Feb 24 2021 1:59pm
- Forum: Electric Aircraft
- Topic: Battery pack selection for self-launching glider
- Replies: 7
- Views: 172
Re: Battery pack selection for self-launching glider
Since the extra capacity is not going to kill your weight budget why not go for a pack that doesn't get worked quite so hard. Sure the cells can handle 20C but doing that often will greatly reduce the lifespan. Make the 15 kg pack into two parts and it would be easy enough for someone to carry one m...
- Feb 16 2021 10:42am
- Forum: Alternative Energy
- Topic: Gas turbine & antifreeze windmill startup, fire in the hole
- Replies: 1
- Views: 116
Re: Gas turbine & antifreeze windmill startup, fire in the hole
It is strange to hear about these wind farms having problems in the cold.
There are a ton running in Canada and they seem to do just fine in the winters here.
There are a ton running in Canada and they seem to do just fine in the winters here.
- Feb 15 2021 7:27pm
- Forum: Items for Sale - New
- Topic: Cheap FOCer 2 kits (35A 12s VESC6 based design)
- Replies: 5
- Views: 578
Re: Cheap FOCer 2 kits (35A 12s VESC6 based design)
Do we have to order the preassembled kit to get the picture of samuel jackson on the back? Shaman on here is the one who did the design and the SLJ artwork. https://endless-sphere.com/forums/memberlist.php?mode=viewprofile&u=62507 It is actually pretty good practice for hand soldering a combo o...
- Feb 14 2021 9:43pm
- Forum: Items for Sale - New
- Topic: Cheap FOCer 2 kits (35A 12s VESC6 based design)
- Replies: 5
- Views: 578
Re: Cheap FOCer 2 kits (35A 12s VESC6 based design)
I do and plan on ordering more once these are sold.
- Jan 11 2021 3:08pm
- Forum: Items for Sale - New
- Topic: Cheap FOCer 2 kits (35A 12s VESC6 based design)
- Replies: 5
- Views: 578
Re: Cheap FOCer 2 kits (35A 12s VESC6 based design)
Still have a few of these left.
- Dec 01 2020 8:24am
- Forum: Items Wanted
- Topic: Wanted: Kepler bottom bracket friction drive
- Replies: 1
- Views: 254
Re: Wanted: Kepler bottom bracket friction drive
I have one I am no longer using.
It is missing the gravity spring.
It is missing the gravity spring.
- Nov 10 2020 5:43pm
- Forum: Items for Sale - New
- Topic: Cheap FOCer 2 kits (35A 12s VESC6 based design)
- Replies: 5
- Views: 578
Cheap FOCer 2 kits (35A 12s VESC6 based design)
Time to sell some Cheap FOCER 2 V1.0's For more details here is the development thread for this VESC6 compatible electronic speed controller. It was developed buy a member here. https://endless-sphere.com/forums/viewtopic.php?f=30&t=103465 https://forum.esk8.news/t/cheap-focer-2-open-source-low-...
- Nov 10 2020 10:10am
- Forum: Electric Aircraft
- Topic: Converting a MONI motor glider to electric
- Replies: 33
- Views: 6608
Re: Converting a MONI motor glider to electric
Do you have a detailed W&B from the original builder? If you need a copy of the sheet to do the math I have the forms from the factory. There is a lot of dead weight on the front end of a Moni since it was originally intended for a larger motor. The ballast in mine weighs more than the motor and...
- Oct 22 2020 7:25am
- Forum: Electric Aircraft
- Topic: Self-launching sailplane conversion
- Replies: 23
- Views: 972
Re: Self-launching sailplane conversion
There are plenty intended for R/C motor and prop selection that will do the trick.
- Oct 21 2020 10:55am
- Forum: Electric Aircraft
- Topic: Self-launching sailplane conversion
- Replies: 23
- Views: 972
Re: Self-launching sailplane conversion
You could just measure the current thrust and that gives you a starting point.
One thing you will need to take into account is the thrust available at the speed you climb at. A paramotor is all about static thrust but a glider will be moving quite a bit faster while climbing.
One thing you will need to take into account is the thrust available at the speed you climb at. A paramotor is all about static thrust but a glider will be moving quite a bit faster while climbing.
- Oct 21 2020 7:35am
- Forum: Electric Aircraft
- Topic: Self-launching sailplane conversion
- Replies: 23
- Views: 972
Re: Self-launching sailplane conversion
You should look at some of the electric paramotor drives people have worked out.
They have similar prop size constraints and power requirements.
https://openppg.com/shop/paramotors/openppg-sp140/
They have similar prop size constraints and power requirements.
https://openppg.com/shop/paramotors/openppg-sp140/
- Oct 10 2020 9:53pm
- Forum: Electric Aircraft
- Topic: Electric Ultralight
- Replies: 3
- Views: 1895
Re: Electric Ultralight
Other than the seating position the GOAT and Lazair are very different airframes built using different methods.
- Oct 06 2020 8:44am
- Forum: Electric Aircraft
- Topic: Converting a MONI motor glider to electric
- Replies: 33
- Views: 6608
Re: Converting a MONI motor glider to electric
Munro claims the new Tesla battery will reduce the battery weight in half. Half the empty weight of this aircraft is still to much to allow it to fly. This is a conversion it is not a new build. The power system has to work with the weight and balance as is. Luckily the original airframe had a larg...
- Oct 03 2020 12:03pm
- Forum: Electric Aircraft
- Topic: Converting a MONI motor glider to electric
- Replies: 33
- Views: 6608
Re: Converting a MONI motor glider to electric
40 kwhr of batteries would weigh more than the empty weight of this aircraft.
- Oct 01 2020 12:54pm
- Forum: Electric Aircraft
- Topic: Converting a MONI motor glider to electric
- Replies: 33
- Views: 6608
Re: Converting a MONI motor glider to electric
Have fun with that. Hope you have some automated welder to do 12000 spot welds. I am using volt cells as I need power density rather than energy density. I want a pack that is as light as possible to fit the existing airframe while being able to handle the peak power demands. Climb power is more imp...
- Sep 07 2020 10:37pm
- Forum: Electric Aircraft
- Topic: Farfles Electric Ultralight.
- Replies: 238
- Views: 42817
Re: Farfles Electric Ultralight.
That is some really shitty news to hear. I helped him with the instrument panel.
Two-strokes are not great power plants for aircraft.
Two-strokes are not great power plants for aircraft.
- Sep 07 2020 10:33pm
- Forum: Electric Aircraft
- Topic: Converting a MONI motor glider to electric
- Replies: 33
- Views: 6608
Re: Converting a MONI motor glider to electric
Shouldn't be too difficult welding 18650s with a tack welder? And using those plastic brackets to form the grids? Not that I have built this, but am planning to build. Let me know when you are ready to build a pack with 900 individual cells. Probably just going to buy a complete Chevy volt pack and...
- May 12 2020 8:08pm
- Forum: Electric Aircraft
- Topic: Converting a MONI motor glider to electric
- Replies: 33
- Views: 6608
- May 12 2020 3:42pm
- Forum: Electric Aircraft
- Topic: motor glider project
- Replies: 44
- Views: 2613
Re: motor glider project
I'm still working on an EV conversion of a single seat motorglider. https://endless-sphere.com/forums/viewtopic.php?f=38&t=89000 Got a motor and ESC but am still working on a battery. A Zero motorcycle battery would probably be perfect but there are not many in Canada so not many available on th...
- Dec 27 2019 5:51pm
- Forum: Items for Sale - Used
- Topic: Tesla 2170 Battery Cells 1-2-3 Kwh. United States
- Replies: 2
- Views: 1573
Re: Tesla 2170 Battery Cells 1-2-3 Kwh. United States
Curious to see how people are building packs with these since the positive terminal is lower than the negative ring surrounding it?
Might be interested in a several kwhr of them but have to figure out pack assembly and how to get them here.
Might be interested in a several kwhr of them but have to figure out pack assembly and how to get them here.
- Nov 05 2019 4:30pm
- Forum: Electric Aircraft
- Topic: Farfles Electric Ultralight.
- Replies: 238
- Views: 42817
Re: Farfles Electric Ultralight.
There is real irony of an electric airplane being converted to gas but good on you for building something, testing it and realising that it doesn't match your use case.
Got any plans for the electric drive train?
Got any plans for the electric drive train?
- Jun 07 2019 5:52pm
- Forum: EBike Non-hub Motor Drives
- Topic: Dewalt powered mid drive road bike
- Replies: 6
- Views: 1458
Re: Dewalt powered mid drive road bike
Missed this one.StinkyGoalieGuy wrote: ↑May 29 2019 11:22pmVery nice. So do you run the two packs in series? Do you use any kind of diode to isolate them in case the BMS trips on one of the batteries?
No diode because they are in series. And they do not have a conventional BMS only a basic cell balancer.
- Jun 04 2019 6:39pm
- Forum: EBike Non-hub Motor Drives
- Topic: Dewalt powered mid drive road bike
- Replies: 6
- Views: 1458
Re: Dewalt powered mid drive road bike
I used ABS. It is a pretty common material on bikes.
The Waitley adaptor will also accept Milwaukee M18 as well as the dewalt packs.cheapcookie wrote: ↑May 30 2019 1:22pmNice, have you tried 3d printed ryobi/makita/milwaukee adapters ?
- May 20 2019 2:35pm
- Forum: EBike Non-hub Motor Drives
- Topic: Dewalt powered mid drive road bike
- Replies: 6
- Views: 1458
Dewalt powered mid drive road bike
Decided to update my bicycle for this riding season. The bike is an old Miele road bike that has been upgraded over the years. The update consisted of removing a Kepler friction drive and replacing it with a Bafang BBS01. For a power source I wanted to use a pair of 5 Ah Dewalt 20 volt packs. The mi...
- Feb 25 2019 5:38pm
- Forum: Electric Aircraft
- Topic: The E-Gull
- Replies: 12
- Views: 4123
Re: The E-Gull
I was always impressed by this setup at Oshkosh.
Outperforms just bout everything on the field. It is unfortunate that Zero's lawyers made it difficult for the designer to offer it as a ready to go kit.
Outperforms just bout everything on the field. It is unfortunate that Zero's lawyers made it difficult for the designer to offer it as a ready to go kit.