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-   -   Throttle Springs Again (https://vansairforce.net/community/showthread.php?t=79102)

Gagarin737 12-12-2011 05:26 PM

Go to the Picasa album, go to the picture, right click on the picture itself and copy the link. In this case; https://lh3.googleusercontent.com/-q...0/DSC06039.JPG
Https will be displayed here on VAF, don't use the address in the address bar!


Tony_T 12-13-2011 08:42 AM

Enable Picassa downloads...
 
John,

There are Picassa albums without the secure (https) protocol. You must have downloads enabled. It appears the album owner (as well as visitors) cannot download unless you have enabled this in your download settings. This apparently applies to links to VAF.

See Picassa Help here. Looks easy enough, but I haven't tried it because I have not signed up for Picassa.

Sorry about the thread drift.

Tony

Bill_H 07-28-2012 01:58 PM

I flew Sweetie for 25 hours. Then swapped to the springs obtained by todenhal. A GREAT improvement! The functionality is the same without the annoyance factor. Recommended!

yankee-flyer 07-29-2012 04:32 PM

I think I was the second
 
or third person to buy/install the new McFarlane springs. Functionally. they're about the same as the ones I bought from a forum member; however the bends are much smoother than those I made (less likely to break) and the arms are longer making them easier to install. I'm approaching 50 hours on them. Do I like them? I have a second set so if one does break I won't have to go back to the originals! In the big picture of RV-12 costs, the cost of these springs is miniscule and the airplane is a lot more fun to fly without worrying about sudden power surges. Yes, if the throttle is unlocked, they'll open it wide-- but slowly. not instantaneously.

Wayne 120241/143WM

BigJohn 07-31-2012 06:23 AM

Flying happily with the McFarlane springs....
 
....... since November 2011. No problems. I would never go back!

f-1rocket 04-24-2016 01:31 PM

Best Spring I have Found
 
Guys, Joe Gores at fransew@gmail.com sent me several Century Springs that he had modified from PN 5553 and worked great on two airplanes that I have used them on. The minimum buy on those springs caused him to order a bunch, and I am sure he has some left over at a very good price if anyone is interested.

With the new spring there is no throttle movement with friction off and engine not running. With the vibration from a running engine the throttle slowly opens to full, but with just a little friction it remains in place. What a difference it makes. Jim

Piper J3 04-24-2016 04:28 PM

In my opinion you don’t have to install extremely weak springs to get good throttle control. I disassembled the friction lock on the standard RV-12 throttle to see why the lock is so hard to tighten sufficiently to prevent throttle creep. There is a fiber washer locking element that conforms to the 30 degree taper on the knurled friction knob. The fiber material gets compressed with use and shines up to a glossy finish when rubbing on the throttle shaft. I think the fiber material is a bad choice for this application.

I made a new locking element from Delrin. Nylon or PVC could also be used. See sketch below. This new element locks and holds the throttle very well to the point where it acts very nearly the same as throttles on Lycoming and Continental engines.

I use a full length coil extension spring - see carb pic below.



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