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Author Topic: servo traval  (Read 2777 times)

MadMax

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servo traval
« on: December 22, 2018, 04:12:55 pm »
hi all
       is it possible to shorten the swing on a standard servo if so how
                                         hope someone can help
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Andyn

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Re: servo traval
« Reply #1 on: December 22, 2018, 05:07:59 pm »
If yours is a computer radio, adjust the end point travel. If not, buy an action servomorph or similar

The easiest way if you've not already done it is moving the pushrod closer in to the servo center
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Ken G121

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Re: servo traval
« Reply #2 on: December 22, 2018, 07:10:08 pm »
Go to eBay
Look for servo end point adjuster
It will set up neutral and both end points, no messing with mechanical linkages and sets up in seconds. Not cheap but I have used them and they are great
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chas

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Re: servo traval
« Reply #3 on: December 22, 2018, 11:27:43 pm »
Most of us just use a hole nearer the servo hub, or drill an extra hole nearer the hub if needed. Or maybe you need something I've not anticipated.
Chas

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tigertiger

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Re: servo traval
« Reply #4 on: December 23, 2018, 02:21:07 am »
It might help if you can tell us what you want to use the servo for, and what the problem caused by too much travel is.
If it is a servo designed for an arm (approx 90 deg travel in each direction) a hole nearer the hub is one of the easiest methods.
If it is a sail winch servo (with a drum on the top) you can buy smaller diameter drums to reduce the length of line pulled in with each rotation.
The electronic methods mentioned work well, but cost a few bob more.
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Ken G121

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Re: servo traval
« Reply #5 on: December 23, 2018, 11:25:19 am »
For me my radio is basic and did not provide for end point adjustment
The Robbe type xxi servos for the front dive planes were sealed in a box.
Placing with the position of the box and length of operating rods to try and get correct position in and out was proving  to be impossible, the adjuster did electronically in seconds what was proving very frustrating mechanically
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tigertiger

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Re: servo traval
« Reply #6 on: December 23, 2018, 11:57:06 am »
Ken G121
That has got to be one of the most precise, clear, and simple explanatory posts that I have ever seen on here.
Nice one. :-)) :-)) :-))
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MadMax

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Re: servo traval
« Reply #7 on: December 23, 2018, 03:35:36 pm »
hi all
thanks for posts on this topic
i have 2 kmb jet drives in a kmb pbr (pibber)   the servos that control the steering part of the drives is perfect but
the servos for the reverseing buckets is traveling to far
tryed drilling horn as near to the centre mount but is just as bad
got a couple of options one is a member on this forum the other is piece of kit somebody told me bout on this post
                                                                     very
                                                        grateful
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andyquirot

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Re: servo traval
« Reply #8 on: December 23, 2018, 06:31:59 pm »
Hi there
Put an omega loop in your servo linkage this will take up the overthrow ..
Regards Andy Q
Image result for radio control servo omega loop
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Taranis

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Re: servo traval
« Reply #9 on: December 23, 2018, 07:43:20 pm »
No need radio does have servo travel adjustment  :-))
I’m on a break in Edinburgh through Xmas and promised to help next weekend
However if anyone wants to break down the instructions into something more easy to absorb ?
It is an early spectrum dx6 dsm and pdf instructions are on the web  :-))
Merry Xmas  :-)) 





Have a go
https://www.spektrumrc.com/ProdInfo/Files/DX6_Maunal.pdf









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ANDY
You’ll only know your best effort if you don’t give up.

andyquirot

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Re: servo traval
« Reply #10 on: December 23, 2018, 07:51:08 pm »
page 42
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Taranis

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Re: servo traval
« Reply #11 on: December 23, 2018, 07:57:31 pm »
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ANDY
You’ll only know your best effort if you don’t give up.
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