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  #11  
Old 10-19-2017, 09:35 AM
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DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
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I have flown one RV-12 with bad throttle creep, and it was really annoying. Mine hasn't had that problem. The McFarlane site has replacement packing for the friction lock. The absolute best solution, though, was to install the vernier assist throttle cable assembly. It wasn't difficult or too time consuming to install, and although it's pricey I have to say it's been worth the money and effort.
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Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
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  #12  
Old 10-19-2017, 10:31 AM
RFSchaller RFSchaller is offline
 
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Location: Phoenix, AZ
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Get Home Depot springs and cut to length. My throttle is very smooth with no creep. They have been in place 5 years with no issues. I tried some HF ones first and they broke.
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  #13  
Old 10-19-2017, 10:37 AM
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tomkk tomkk is offline
 
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Location: Port Orange, Fl
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Quote:
Originally Posted by RFSchaller View Post
Get Home Depot springs and cut to length. My throttle is very smooth with no creep. They have been in place 5 years with no issues. I tried some HF ones first and they broke.
Do you remember which spring you started with? Their website shows a ton of springs, some obviously not the ones, others not so clear.
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Port Orange, Fl
RV-12 N121TK ELSA #120845; first flight 06/10/2015
RV-12 N918EN ELSA #120995 Eagles Nest Project; ready for engine & avionics
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  #14  
Old 10-19-2017, 12:04 PM
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vernon smith vernon smith is offline
 
Join Date: Jun 2017
Location: Naples FL
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Thanks for the tip, It's about eight years old, I'll look into this.
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  #15  
Old 10-19-2017, 09:19 PM
RFSchaller RFSchaller is offline
 
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When I went to Home Depot they had two that were close in length to what I needed. as I recall it was the 0.037Ē diameter wire coil spring. They have one that is about 0.048, but itís too strong. Youíll have to cut it to length and bend up one half coil to form a hook. Just make sure it is under slight tension with the throttle shut.
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  #16  
Old 02-21-2018, 04:21 AM
rjtjrt rjtjrt is offline
 
Join Date: Mar 2006
Location: Australia
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Quote:
Originally Posted by rvbuilder2002 View Post
Use of the currently supplied spring is being reviewed... more on that in the future.

In the mean time, the unavailable status has been changed so there is a limited number of the current part # available from Van's for replacement parts.
Does anyone know the current return spring part number (for the Vernier Throttle)?
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  #17  
Old 03-01-2018, 06:33 PM
rjtjrt rjtjrt is offline
 
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Location: Australia
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Quote:
Originally Posted by rjtjrt View Post
Does anyone know the current return spring part number (for the Vernier Throttle)?
Van’s telephone support tell me they no longer supply RV -12 Vernier Throttle Rotax Throttle Return Springs. They referred me to McFarlane Aviation.

McFarlane Aviation lady who answered said she knew the RV-12 part number off by heart.
She supplied spring McFarlane P/N 7235

Edit, 3 March 2018. See my later post 20 below - McFarlane Tech Support have given more accurate advice, they now say should order spring kit p/n 7140 that contains left and right springs. These are colored Red for L/H spring p/n 6822 and Blue for R/H p/n 7235.

Last edited by rjtjrt : 03-02-2018 at 07:18 PM.
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  #18  
Old 03-01-2018, 07:34 PM
np12 np12 is offline
 
Join Date: Dec 2013
Location: colorado springs, co
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Default carb spring

I got the same referral from Van's, but, for some reason I ordered P/N 6822. I'm not seeing P/N 7235. Are there multiple springs?

-nick
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  #19  
Old 03-01-2018, 09:28 PM
rjtjrt rjtjrt is offline
 
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Quote:
Originally Posted by np12 View Post
I got the same referral from Van's, but, for some reason I ordered P/N 6822. I'm not seeing P/N 7235. Are there multiple springs?

-nick
I looked at McFarlane web site and saw same thing. If search their site it comes up with a P/N(if I recall correctly 6822), but if you phone them the lady who answered chuckled that she knew the RV-12 P/N off by heart, and sent me the P/N 7235. I also could not find the 7235 on their web site.

Last edited by rjtjrt : 03-01-2018 at 09:33 PM.
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  #20  
Old 03-02-2018, 12:47 PM
rjtjrt rjtjrt is offline
 
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Location: Australia
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This is from McFarlane Aviation in response to an email I sent last night.

Good Morning John,
Thank you for the inquiry on the springs. Yes, we now have a spring kit p/n 7140 that contains left and right springs. These are colored Red for L/H spring p/n 6822 and Blue for R/H p/n 7235 as seen below. The engineers have developed the new spring for the right side that helps align properly. I have attached the new instructions for installation of the springs for your reference. Our website does not have the new spring or kit listed yet, but they are available for sale. I am not sure if Vans has those yet or not? Hopefully that is helpful information. Please let me know if you have any questions.



Ben Strahm
McFarlane Aviation Products
McFarlane Aviation, Inc.
696 East 1700 Road
Baldwin City, KS 66006
800.544.8594 ext. 215
785.594.3922 Fax
BenS@mcfarlaneaviation.com


They also sent an instruction on how to install, but I do not know how to post the pdf on VAF.
The installation instructions require “Remove upper B throttle arm piece from the
carburetor shaft.”

Last edited by rjtjrt : 03-02-2018 at 02:14 PM. Reason: Typo
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