recumpence
1 GW
Hey Guys,
For those of you who do not know me on this particular forum, I am into high end E-bike drive systems. You can check out my builds in the non-hub motor e-bike section.
This project began as an OEM product development project for a client. It was a lucrative project. However, that was a while back and after building and testing his winch my 13 year old son insisted I build another one for us to use. So, this is my personal winch.
The design perameters from the client were;
#1 Deep water starts pulling up a slalom skier.
#2 30mph top pulling speed.
#3 Under 20 pound weight.
#4 "Suit-case" size.
#5 Must be reliable and very efficient to maximize how many runs could be achieved per KWH of charge.
#6 Changeable gear ratios to test various speeds and the resulting torque changes with those ratio changes.
You can see the winch is very compact. Most wake-board winches are the size of a wheel barrow. My 13 year old son is pictured holding the winch. It is 7 inches wide, 15 inches long, and 8 inches high. The tow rope is a 500 foot long, 3mm spectra fiber cord with a 1,500 pound limit.
The motor is an Astro Flight 3220 motor custom built to my specs with fan cooling. The controller will be a Castle Creations Edge 160 controlled by an RC car pistol grip transmitter. The pack will be 12S-20ah multi-star 10C pack. That pack should be good for 60 runs minimum.
I have already built the identical winch and tested it by pulling myself (180 pounds) across grass at 26 mph. The client has pulled up 200 pound men from a deep water start in a slalom ski. Needless to say, it has a LOT of power. The winch uses a mechanical torque limiter (slipper clutch) to protect the system from over-torquing.
I will post more pictures as I have them.
Oh, ignore the date on the pictures. This camera insists on resetting the date every time I recharge it. :wink:
Matt
For those of you who do not know me on this particular forum, I am into high end E-bike drive systems. You can check out my builds in the non-hub motor e-bike section.
This project began as an OEM product development project for a client. It was a lucrative project. However, that was a while back and after building and testing his winch my 13 year old son insisted I build another one for us to use. So, this is my personal winch.
The design perameters from the client were;
#1 Deep water starts pulling up a slalom skier.
#2 30mph top pulling speed.
#3 Under 20 pound weight.
#4 "Suit-case" size.
#5 Must be reliable and very efficient to maximize how many runs could be achieved per KWH of charge.
#6 Changeable gear ratios to test various speeds and the resulting torque changes with those ratio changes.
You can see the winch is very compact. Most wake-board winches are the size of a wheel barrow. My 13 year old son is pictured holding the winch. It is 7 inches wide, 15 inches long, and 8 inches high. The tow rope is a 500 foot long, 3mm spectra fiber cord with a 1,500 pound limit.
The motor is an Astro Flight 3220 motor custom built to my specs with fan cooling. The controller will be a Castle Creations Edge 160 controlled by an RC car pistol grip transmitter. The pack will be 12S-20ah multi-star 10C pack. That pack should be good for 60 runs minimum.
I have already built the identical winch and tested it by pulling myself (180 pounds) across grass at 26 mph. The client has pulled up 200 pound men from a deep water start in a slalom ski. Needless to say, it has a LOT of power. The winch uses a mechanical torque limiter (slipper clutch) to protect the system from over-torquing.
I will post more pictures as I have them.
Oh, ignore the date on the pictures. This camera insists on resetting the date every time I recharge it. :wink:
Matt