Author Topic: USES FOR LINEAR ACTUATORS  (Read 3960 times)

76mx

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Re: USES FOR LINEAR ACTUATORS
« Reply #10 on: April 03, 2018, 05:09:27 PM »
Quite welcome.

eddie

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Re: USES FOR LINEAR ACTUATORS
« Reply #9 on: April 03, 2018, 05:05:28 PM »
Thank you Charley

76mx

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Re: USES FOR LINEAR ACTUATORS
« Reply #8 on: April 03, 2018, 04:49:07 PM »
Eddie asked me to detail the actuator on the swaybar, so here it is for the whole Forum. This is not a perfect solution, but it is a cheap and easy solution. There are a few things to know first. It keeps the swaybar from acting like a true swaybar, as it will no longer transfer twist (and weight) to the other wheel because the actuator mount is rigid and both sides of the bar now work independently. For the same reason, the rating of the bar will double, there is only half as much bar to twist. Unless you are racing in a Grand Prix, economics probably trumps these factors. Another thing to remember is not to weld the arm to the oil quenched spring steel of a swaybar. I machined a Woodruff keyway slot in the bar and used a couple of two piece shaft collars on the arm and it worked fine. Last thing, the bar is still going to act like a swaybar when it is used to lift. If it was originally a 300lb bar, now it is 600 on both sides, and the front axle supports 1,200lbs, it is going to flex an inch before it lifts. While we are on the subject, this drawing shows the swaybar connected to the top a-arm, which is unusual. From the beginning I have had trouble getting good geometry on these cars, especially on the rear where a transaxle is in the way. After a great deal of research, all of the experts agreed that a swaybar does not know which a-arm it is attached to and it works the same, so long as the different motion ratio of the upper arm is considered. And a final thought, that touches on the fact that a 300lb swaybar is nowhere close to a 300lb swaybar in that car, let alone another car or another car.   

76mx

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Re: USES FOR LINEAR ACTUATORS
« Reply #7 on: March 11, 2018, 02:23:34 PM »
I did it years ago, it worked well and to my knowledge still is working fine. The only trick is attaching the lever arm to the swaybar without welding on the tempered spring steel it is made of.

eddie

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Re: USES FOR LINEAR ACTUATORS
« Reply #6 on: March 11, 2018, 10:06:29 AM »
after my post I thought of it too, it needs travel but maybe 76M's idea will work .
« Last Edit: March 11, 2018, 10:08:41 AM by eddie »

76mx

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Re: USES FOR LINEAR ACTUATORS
« Reply #5 on: March 11, 2018, 09:17:37 AM »
Those actuators in the picture are imported by Concentric. Their engineers were here last week to begin development of an electric E-Brake Actuator for Wilwood. They are nice, well finished, but very overkill for these purposes. Take a look at the mini actuators that Acelle imports. We are using them for the windows on the Chupacabra. The big advantage is their size and the less room taken up with mechanism below the window, allowing it to roll down all the way. You cannot use an actuator as a direct link for suspension lift, but you can direct link it to a lever arm off of the center of the swaybar. That way it has no effect on suspension travel but can still use the swaybar to push the suspension up and down. I am traveling now delivering three cars but can provide more info and contact names when I get home.

diablodoc

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Re: USES FOR LINEAR ACTUATORS
« Reply #4 on: March 11, 2018, 09:03:45 AM »
I thought about trying to use them for my front-end lift system.  The problem is that they are solid (unlike airbags) and you need to allow the wheel to travel up and down normally when in the usual ride-height position.  A linear activator solidly attached to the suspension and frame would not allow this normal movement.  I think it could be done, but you'd have to figure out a way to allow normal suspension movement.

autopro

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Re: USES FOR LINEAR ACTUATORS
« Reply #3 on: March 10, 2018, 12:56:29 PM »
I'm using them for my Bateings and as my transmission shifter.  I'll look for some pictures later and post them here for you.  They have been working great and are easy to use.
Pedro

eddie

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Re: USES FOR LINEAR ACTUATORS
« Reply #2 on: March 10, 2018, 12:43:26 PM »
https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20180310102841&SearchText=Linear+Actuator
Aliexpress has too, I wonder if you can use it instead of air lift on front , some are strong and affordable  . it would easy to mod rather the air bags.
 Jim thanks for the heads up.
also I found if you  buy of Ebay shipping from China it take good 3 months , I bought a flip up radio with all the option bui;t in GPS , rear cam inlc. from Ali 3 weeks at my door. and it did come from China too.  also very good US place for radio etc https://www.sonicelectronix.com/
 got my speakers from them Alpine 5.25" for doors 400w 49.99  two day free delivery .they have on line vids of how to etc.

01Lambiero

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USES FOR LINEAR ACTUATORS
« Reply #1 on: March 10, 2018, 12:23:27 PM »
Since the Chinese have came on the market of linear actuators, actuator pricing is affordable for batwings, lids, covers, window operation, and possibly door opening.  Anyone tried these applications with success?  I do know of batwings and lids/covers using actuators but have not heard of using them to power windows or door opening/closing.  Another concern would always be the quality of imported actuators.

01

https://www.ebay.com/itm/2-4-6-8-16-Linear-Actuator-Stroke-225lb-Max-Lift-Output-12V-DC-Brackets/263388993310?_trkparms=aid%3D888007%26algo%3DDISC.MBE%26ao%3D1%26asc%3D47300%26meid%3D55c82c2b0ed048a8ab82713261df3cd4%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D162757757553%26itm%3D263388993310&_trksid=p2047675.c100009.m1982

USA seller but imported actuators.
20 yr. GM Niase certified Auto Mechanic (Tune-Up, Brakes, & Heavy Repair)
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