Vernier Throttle

[cactusman]

Just flew 412 on Friday and it had a new throttle and weaker springs.....it is not the push button type, but a friction adjustable vernier that is rotatable for smaller throttle adjustments. Seemed to work nicely and I think I heard it will be around a 180 option available thru Vans with weaker springs for builders looking at the newer section revisions. Hardly touched the friction adjust at all.

Also had the Skyview touch installed as well.

[MLock]

I installed the vernier throttle in N112VA (the Garmin G3X Touch airplane which I'm bringing to OSH) a few months ago. A vast, vast improvement over the standard throttle/spring arrangement.

Over my hundreds of demo flights in the RV-12, many folks have asked if there was anything I didn't like or would want to change on the 12. I always responded that the throttle was a weak area. It isn't now.

[kevinl4000]

Originally Posted by MLock

I installed the vernier throttle in N112VA (the Garmin G3X Touch airplane which I'm bringing to OSH) a few months ago. A vast, vast improvement over the standard throttle/spring arrangement.

Over my hundreds of demo flights in the RV-12, many folks have asked if there was anything I didn't like or would want to change on the 12. I always responded that the throttle was a weak area. It isn't now.

Just to reiterate - that's a mod you can do AFTER the phase 1 flyoff, correct?

[Top Cat]

I just picked up a new SLSA and am on the long flight home. my hand and fingers are really sore from having to use the throttle with almost full friction lock on to avoid the throttle moving forward rapidly if I take my hand off for a second.

when I ordered the plane I specifically took Mitch,s suggestion about the vernier throttle. van,s usual response is " I ,s still in engineering" however they did tell me that the "new springs" were are big improvement. I didn't,t get them because the original batch had metallurgical issues and had to be sent back however I can order them when they come in .

quite frankly the throttle , for me, is a huge pains in the rear and along with the rudder pedals being non adjustable is the biggest gripe I have. I saw Vans are saying they are close to producing a mod for the pedals as well as dual screens.

BTW..the Skyview Touch with ADSB in and out is great . I also have the Seattle sectionals installed and it's nice to be able to switch. Between the Dynon chart and the sectional chart to cross check.

Two more days......

[AZLeeJay]

Originally Posted by Top Cat

I just picked up a new SLSA and am on the long flight home. my hand and fingers are really sore from having to use the throttle with almost full friction lock on to avoid the throttle moving forward rapidly if I take my hand off for a second.

when I ordered the plane I specifically took Mitch,s suggestion about the vernier throttle. van,s usual response is " I ,s still in engineering" however they did tell me that the "new springs" were are big improvement. I didn't,t get them because the original batch had metallurgical issues and had to be sent back however I can order them when they come in .

quite frankly the throttle , for me, is a huge pains in the rear and along with the rudder pedals being non adjustable is the biggest gripe I have. I saw Vans are saying they are close to producing a mod for the pedals as well as dual screens.

BTW..the Skyview Touch with ADSB in and out is great . I also have the Seattle sectionals installed and it's nice to be able to switch. Between the Dynon chart and the sectional chart to cross check.

Two more days......

Cool, hope the rest of your flight home is smooth. I've got around 60-70hrs on my SLSA and I've gotten somewhat used to the throttle but I will still be first in line if Van's approves it for the SLSA!

[Ex Bonanza Bucko]

I couldn't agree more with you guys and I certainly understand how that long trip home with that thing is a real pain.

I think Van's has an urgent business need to fix the throttle; people are not going to buy the S-LSA very fast with that thing installed. Apparently the Experimental world can just fix it but we S-LSA guys have to wait and it's pretty hard to understand how the Experimental vernier throttle is somehow dangerous and can't be used on our airplanes.

I love my S-LSA but I certainly would love it more with a vernier throttle.....might be somewhat safer too.

EBB

[Mel]

You can always change your S-LSA to E-LSA. Then you can do what you want.

[rvbuilder2002]

Originally Posted by Ex Bonanza Bucko

I love my S-LSA but I certainly would love it more with a vernier throttle.....might be somewhat safer too.

EBB

It is coming.

Unfortunately, it is a little more complicated to make a change for the S-LSA airplanes than simply handing them a different part and a different construction manual page for installing it.

Part of the delay was our discovery of a fatigue failure problem with the newer version spring being supplied by Mcfarlane (You can see the service Bulletin HERE).

[Ex Bonanza Bucko]

The McFarlane SB calls for "locally annealing" the new spring. That is not good enough! And I now can see why Van's has this problem in engineering: They can't rely on S-LSA owners to "locally anneal" a spring. Geez! That might....MIGHT.....be OK for an ELSA builder but Van's has a Special Airworthiness Certificate on the S-LSAs that precludes this kind of stuff. Somebody needs to have a long talk with McFarlane.....if that hasn't already happened.


EBB

[philrisl]

I believe the SB reference to locally annealing refers to a localized area of the spring. The new part number appears to be ready to install. Mcfarlane is a quality manufacturer of certified parts and appears to have been proactive in adressing the issue.