---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Wed 03/16/11: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:47 AM - Re: Balance weights on Hartzell CS prop hub (Fred Williams, M.D.) 2. 08:27 AM - Re: Re: 2006X oil cooler question (Don McDonald) 3. 08:27 AM - Re: Balance weights on Hartzell CS prop hub (Bill Watson) 4. 08:38 AM - Re: Balance weights on Hartzell CS prop hub (Kelly McMullen) 5. 08:45 AM - Re: Balance weights on Hartzell CS prop hub (Jesse Saint) 6. 10:09 AM - Re: Balance weights on Hartzell CS prop hub (George, Neal Capt 505 TRS/DOJ) 7. 11:03 AM - Re: Balance weights on Hartzell CS prop hub (John J) 8. 12:01 PM - Re: Balance weights on Hartzell CS prop hub (Linn Walters) 9. 12:16 PM - Re: Balance weights on Hartzell CS prop hub (Linn Walters) 10. 05:13 PM - Re: Spot Messenger Share interest? (AirMike) ________________________________ Message 1 _____________________________________ Time: 07:47:23 AM PST US From: "Fred Williams, M.D." Subject: Re: RV10-List: Balance weights on Hartzell CS prop hub Bill, I had my prop balanced after about 150 hrs. The weights actually went in the holes on the flywheel. No more than a AN3 screw and a couple of washers. You shouldn't need to do anything else with the prop itself. Dr Fred. On 3/15/2011 6:44 PM, Bill Watson wrote: > > A close examination of my (unused, unmounted) Hartzell prop hub, I see > 2 screws safety wired together on the hubs, near where the prop shafts > are mounted. What's strange is that there are 8 threaded screw holes, > 2 pair at each prop shaft. But only 2 of the 8 are in place and > safety wired. > > In the Owner's manual, they are called 'balance weights'. In one > drawing it looks like a plate of some sort might be mounted under the > screws. One other diagram 'suggests' safety wire. Otherwise, I can > find no reference to them. > > Anyone know anything about this? > > I know this isn't enough information to easily picture this but I'm > thinking someone is familiar enough to know what I'm talking about. > It's weird to see 8 holes and only 2 screws. > > Bill Watson > > ________________________________ Message 2 _____________________________________ Time: 08:27:02 AM PST US From: Don McDonald Subject: Re: RV10-List: Re: 2006X oil cooler question As far as I'm concerned all planes (but we really only care about our fello w =0ARV10 guys) should have this valve.- I made my- own during the buil d when I saw =0Athe temps other RV's were getting during the winter months. .. 150 to 160 =0Adegrees.- With the valve you can literally dial in any o il temp you want.... so =0AWHO wouldn't want that?=0ADon McDonald=0A=0A=0A =0A=0A________________________________=0AFrom: orchidman =0ATo: rv10-list@matronics.com=0ASent: Tue, March 15, 2011 6:47:32 AM=0ASub ject: RV10-List: Re: 2006X oil cooler question=0A=0A--> RV10-List message p osted by: "orchidman" =0A=0A=0ATim Olson wrote:=0A> =0A> Today I installed the Nonstopaviation.com control valve, and ...=0A=0ASure am looking forward to seeing your valve installation pictures.- This wint er =0AI can't get my temps up above 170 and most of the time 160.- I also have the =0A2006X.=0ALooks like I am going to have to install the valve al so.=0A=0A--------=0AGary Blankenbiller=0ARV10 - # 40674=0A(N2GB Flying)=0A =0A=0A=0A=0ARead this topic online here:=0A=0Ahttp://forums.matronics.com/v - - - - - - - - - - - - -Matt Dralle, List Admin. ======0A=0A=0A ________________________________ Message 3 _____________________________________ Time: 08:27:10 AM PST US From: Bill Watson Subject: Re: RV10-List: Balance weights on Hartzell CS prop hub So it seems that the factory does some balancing of the new prop itself (per Linn). \ Then if the prop installation is balanced by whatever means, weights may be applied to the engine flywheel. Thanks Dr Fred. On 3/16/2011 10:41 AM, Fred Williams, M.D. wrote: > > > Bill, > > I had my prop balanced after about 150 hrs. The weights actually went > in the holes on the flywheel. No more than a AN3 screw and a couple > of washers. You shouldn't need to do anything else with the prop itself. > > Dr Fred. > ________________________________ Message 4 _____________________________________ Time: 08:38:56 AM PST US From: Kelly McMullen Subject: Re: RV10-List: Balance weights on Hartzell CS prop hub What you are discussing is the difference between static balance, which is done by factory or any prop shop when they service a prop which is simply having prop balanced end to end about the center point; and dynamic balance that is done on the aircraft with the engine running, and will be different for every engine, for any difference in prop clocking if it is changeable. A prop must have proper static balance before you will be able to effectively do a dynamic balance. On 3/16/2011 8:23 AM, Bill Watson wrote: > > So it seems that the factory does some balancing of the new prop > itself (per Linn). > \ > Then if the prop installation is balanced by whatever means, weights > may be applied to the engine flywheel. > > Thanks Dr Fred. > > On 3/16/2011 10:41 AM, Fred Williams, M.D. wrote: >> >> >> Bill, >> >> I had my prop balanced after about 150 hrs. The weights actually >> went in the holes on the flywheel. No more than a AN3 screw and a >> couple of washers. You shouldn't need to do anything else with the >> prop itself. >> >> Dr Fred. >> > > ________________________________ Message 5 _____________________________________ Time: 08:45:46 AM PST US Subject: Re: RV10-List: Balance weights on Hartzell CS prop hub From: Jesse Saint As was mentioned, the manufacturer (and/or prop shop) will do a balance on the prop before delivery, but the weights added to the ring gear are for a dynamic balance, which balances the prop as mounted with the spinner and all of that stuff on it. do not archive Jesse Saint Saint Aviation, Inc. jesse@saintaviation.com C: 352-427-0285 F: 815-377-3694 On Mar 16, 2011, at 10:41 AM, Fred Williams, M.D. wrote: > > Bill, > > I had my prop balanced after about 150 hrs. The weights actually went in the holes on the flywheel. No more than a AN3 screw and a couple of washers. You shouldn't need to do anything else with the prop itself. > > Dr Fred. > > On 3/15/2011 6:44 PM, Bill Watson wrote: >> >> A close examination of my (unused, unmounted) Hartzell prop hub, I see 2 screws safety wired together on the hubs, near where the prop shafts are mounted. What's strange is that there are 8 threaded screw holes, 2 pair at each prop shaft. But only 2 of the 8 are in place and safety wired. >> >> In the Owner's manual, they are called 'balance weights'. In one drawing it looks like a plate of some sort might be mounted under the screws. One other diagram 'suggests' safety wire. Otherwise, I can find no reference to them. >> >> Anyone know anything about this? >> >> I know this isn't enough information to easily picture this but I'm thinking someone is familiar enough to know what I'm talking about. It's weird to see 8 holes and only 2 screws. >> >> Bill Watson >> >> >> >> >> >> > > > > > ________________________________ Message 6 _____________________________________ Time: 10:09:11 AM PST US Subject: RE: RV10-List: Balance weights on Hartzell CS prop hub From: "George, Neal Capt 505 TRS/DOJ" True as far as it goes. Not every engine that this prop will fit is equipped with a flywheel in which to mount balance weights, and not everybody thinks the spinner back-plate is the best place to be poking holes for balance bolts. Neal -----Original Message----- So it seems that the factory does some balancing of the new prop itself (per Linn). \ Then if the prop installation is balanced by whatever means, weights may be applied to the engine flywheel. Thanks Dr Fred. On 3/16/2011 10:41 AM, Fred Williams, M.D. wrote: > > > Bill, > > I had my prop balanced after about 150 hrs. The weights actually went > in the holes on the flywheel. No more than a AN3 screw and a couple > of washers. You shouldn't need to do anything else with the prop itself. > > Dr Fred. > ________________________________ Message 7 _____________________________________ Time: 11:03:01 AM PST US From: "John J" Subject: RE: RV10-List: Balance weights on Hartzell CS prop hub Does doing a static balance apply to all props, including wood? John J ________________________________ Message 8 _____________________________________ Time: 12:01:21 PM PST US From: Linn Walters Subject: Re: RV10-List: Balance weights on Hartzell CS prop hub Putting balance weights on the flywheel will refine the balance done with the prop weights, which is a static balance. I recommend everyone get their prop balanced to reduce vibration which lessens wear/tear on airframes and pilots alike. Put a clear glass of water on the glareshield and see how big the ripples get. Do it again after the balance job. See the results. Engine/prop vibrations are very subjective when taken through the seat of your pants. Linn On 3/16/2011 10:41 AM, Fred Williams, M.D. wrote: > > > Bill, > > I had my prop balanced after about 150 hrs. The weights actually went > in the holes on the flywheel. No more than a AN3 screw and a couple > of washers. You shouldn't need to do anything else with the prop itself. > > Dr Fred. > > On 3/15/2011 6:44 PM, Bill Watson wrote: >> >> A close examination of my (unused, unmounted) Hartzell prop hub, I >> see 2 screws safety wired together on the hubs, near where the prop >> shafts are mounted. What's strange is that there are 8 threaded >> screw holes, 2 pair at each prop shaft. But only 2 of the 8 are in >> place and safety wired. >> >> In the Owner's manual, they are called 'balance weights'. In one >> drawing it looks like a plate of some sort might be mounted under the >> screws. One other diagram 'suggests' safety wire. Otherwise, I can >> find no reference to them. >> >> Anyone know anything about this? >> >> I know this isn't enough information to easily picture this but I'm >> thinking someone is familiar enough to know what I'm talking about. >> It's weird to see 8 holes and only 2 screws. >> >> Bill Watson >> >> >> >> >> >> > > ________________________________ Message 9 _____________________________________ Time: 12:16:02 PM PST US From: Linn Walters Subject: Re: RV10-List: Balance weights on Hartzell CS prop hub My experience says it's harder to get a good balance with a wooden prop because it flexes more than a metal one. It can be done, just takes longer, and you really need to know what RPM you cruise at most often as RPM will make a difference. There are lots of other 'things' that make a dynamic balance job harder too. Linn On 3/16/2011 2:00 PM, John J wrote: > --> RV10-List message posted by: "John J" > > Does doing a static balance apply to all props, including wood? > > John J > > ________________________________ Message 10 ____________________________________ Time: 05:13:04 PM PST US Subject: RV10-List: Re: Spot Messenger Share interest? From: "AirMike" I just got an e-mail from Sportys Pilot Shop - They have the Spot for $149 with a $50 rebate by Visa PPD card. That is the best deal that I have seen, plus it is just in time for the Summer flying season ! Remember that you also need the activation fee with is $100-$150/yr. -------- See you OSH '11 Q/B - flying 1 yr+ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=334136#334136 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.