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02-23-2017, 08:23 PM
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Join Date: Apr 2012
Location: Kingsville, Ontario, Canada
Posts: 282
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Vans got back to me - They are aware that the Hartzell gov spring pressure is a problem with their quadrant but don't have a solution. The MT gov works better in this application because it has a lighter spring.
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Dennis Enns
Kingsville, ON
Bellanca Champ 7ACA since 1986, restored 1990.
RV-8 IO375, Hartzell CS, dual PMags.
2020 Donation In
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02-24-2017, 05:59 AM
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Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,400
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Quote:
Originally Posted by Champ
I spoke with Hartzell on this. They haven't come up with a lighter spring.
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There is a lighter spring. We have installed a number of them, but I do not know if it is a publicly available one or perhaps we are just a test bed for them. Ill reach out to them and find out what the status is on these and report back.
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Kahuna
6A, S8 ,
Gold Hill, NC25
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02-27-2017, 04:51 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by Kahuna
There is a lighter spring. We have installed a number of them, but I do not know if it is a publicly available one or perhaps we are just a test bed for them. Ill reach out to them and find out what the status is on these and report back.
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That would be good, because the word I heard around here was that Hartzell was approached about providing a different spring for RV installations and they said no.
This is also what has squashed any thoughts about working up a quadrant kit for the RV-14.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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04-01-2018, 07:23 PM
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Join Date: Jul 2008
Location: Fayetteville, GA
Posts: 164
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Going to the longer arm on the governor should help some. Can anyone tell what length governor arm worked best with the Vans quadrant?
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Tommy Turner
Fayetteville GA
RV-4 sold
RV-6 sold
RV-8 Flying
RV-14A building
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04-01-2018, 09:18 PM
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Join Date: Oct 2012
Location: LA, California
Posts: 323
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Teflon washers
I put teflon washers from McMaster on both sides of the throttle and mixture levers. If I recall, I had to up the length of the bolts that hold the quadrant together by one number. If the slight extra width messes with your mounting scheme, you could shorten the spacers by the thickness of the teflon washers and use the same bolts it came with.
With the friction lever cranked down enough to hold the prop securely, the other levers still move easily. In 90 hours of flight, I haven't messed with the friction lock once. The force to move the throttle and mixture feels just right to me and they are very smooth. The action on the prop doesn't seem wrong at all - stiff enough to stay put, but easy to adjust the RPM.
Ed Holyoke
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04-02-2018, 04:11 AM
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Join Date: Jul 2008
Location: Fayetteville, GA
Posts: 164
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Ed
Good suggestion, I will order the washers. Do you have the part number for them? I would still like to increase the length of the arm on the prop governor as my prop control now only uses about half of it?s available travel.
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Tommy Turner
Fayetteville GA
RV-4 sold
RV-6 sold
RV-8 Flying
RV-14A building
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04-02-2018, 10:24 AM
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Join Date: Oct 2012
Location: LA, California
Posts: 323
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McMaster doesn't seem to have teflon washers. I probably used these UHMW:
Packs of 25
In stock
$7.75 per pack of 25
95649A229
Worth trying, lubricant filled nylon washers:
In stock
$2.33 per pack of 5
91545A240
Ed Holyoke
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06-23-2018, 08:03 PM
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Join Date: Jul 2008
Location: Fayetteville, GA
Posts: 164
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Shortly after I posted a comment to this thread on 4/2/18 I was contacted by Hartzell and asked If I would like to beta test a new spring on my Hartzell prop governor. I returned my governor to them and they installed the new spring and sent me a longer arm for the unit also. I have now flown a few hours with it and I am very pleased. With very little friction set on the controls they all stay in place. The longer arm had three holes in it and the middle one gives me full travel with the prop lever. My aircraft is an RV-8 IO-360-M1B with the rear mounted governor with the standard 3 lever control quadrant. Prior to this change My prop lever only moved about half travel and required an excessive friction setting to lock it in place. I believe they will accept more aircraft in the beta test. You must return the governor to them for installation of the spring. They will not install the longer arm but will provide it for you to install which is very easy. Because this is a beta you will have to provide them with periodic reports on how it is performing. Contact techsupport@hartzellprop.com.
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Tommy Turner
Fayetteville GA
RV-4 sold
RV-6 sold
RV-8 Flying
RV-14A building
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