Model Boat Mayhem - Forum

Dry Dock / Shipyard: Builds & Questions => Yachts and Sail => Topic started by: rnli12 on June 29, 2018, 12:44:27 PM

Title: HiTEC 785HB
Post by: rnli12 on June 29, 2018, 12:44:27 PM
Hi,
Does anyone know if the length of travel can be adjusted on the sail winch or is a best via the transmitter?
Rich
Title: Re: HiTEC 785HB
Post by: tsenecal on June 29, 2018, 03:09:31 PM
i have three of these... the only method i know of to adjust is via transmitter EPA.  it is NOT a digital servo, and offers NO programability directly.   this also means that once you have the EPA set, you will definitely want to set up fail-safe settings so that loss of radio signal doesn't tear stuff apart.
Title: Re: HiTEC 785HB
Post by: JerryTodd on June 30, 2018, 12:04:47 AM
Or a servo stretcher for "dumb" transmitters.
Title: Re: HiTEC 785HB
Post by: mickkays on July 25, 2018, 05:07:57 PM
Have you looked at a servo morph from action electronics ( about 18), It certainly does the job but you need the space in your boat to fit it.
Slinger
Title: Re: HiTEC 785HB
Post by: tigertiger on July 26, 2018, 03:18:53 AM
How to get up to eight and a half turns, https://www.youtube.com/watch?v=OaRFgXzupFA (https://www.youtube.com/watch?v=OaRFgXzupFA), using Arduino or other microprocessor.


If you are using it for a sail boat, and you only need a moderate increase in sail sheet travel, consider using a larger drum.
For example, a 4cm diameter drum will wind approx. 12.5 cm of line per full rotation, a 5cm diameter drum would wind almost 20cm per rotation, and a 6cm drum would wind 28cm. However, the larger the drum, the more torque needed.