---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sat 09/09/17: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:27 AM - Pitch Trim tuning (Carlos Trigo) 2. 05:42 AM - Re: Pitch Trim tuning () 3. 06:14 AM - Re: Pitch Trim tuning (Lenard Iszak) 4. 11:10 AM - Re: Fuel line testing (rvdave) 5. 04:10 PM - Re: Pitch Trim tuning (Kelly McMullen) 6. 05:15 PM - Re: Pitch Trim tuning (Bob Turner) ________________________________ Message 1 _____________________________________ Time: 04:27:38 AM PST US From: "Carlos Trigo" Subject: RV10-List: Pitch Trim tuning I am now in the process of final installation and testing the Elevator Trim system, and I could not find enough information on this. Especially for those who finished building and are already flying, you probably already heard this question a thousand times, so please forgive hearing it once more. When lowering the Pitch trim tabs, both go down simultaneously and both reach the bottom limit at the same time and angle. But when they go the other direction, i.e trim tabs up, the right side tab goes till the limit but the left trim tab doesn't. It goes up slower than the right tab, then stops moving and even reverses the movement, not reaching the upper angle limit. Is this normal? I did check all the Pitch trim system components, and they all seem to be installed by the plans. Need help! Carlos ________________________________ Message 2 _____________________________________ Time: 05:42:20 AM PST US From: Subject: Re: RV10-List: Pitch Trim tuning Hey Carlos, I saved this from years ago. VERY common problem. I=99ll attach as a PDF file. Later, =93 Lew From: Carlos Trigo Sent: Saturday, September 09, 2017 7:25 AM Subject: RV10-List: Pitch Trim tuning I am now in the process of final installation and testing the Elevator Trim system, and I could not find enough information on this. Especially for those who finished building and are already flying, you probably already heard this question a thousand times, so please forgive hearing it once more. When lowering the Pitch trim tabs, both go down simultaneously and both reach the bottom limit at the same time and angle. But when they go the other direction, i.e trim tabs up, the right side tab goes till the limit but the left trim tab doesn=99t. It goes up slower than the right tab, then stops moving and even reverses the movement, not reaching the upper angle limit. Is this normal? I did check all the Pitch trim system components, and they all seem to be installed by the plans. Need help! Carlos ________________________________ Message 3 _____________________________________ Time: 06:14:06 AM PST US From: Lenard Iszak Subject: Re: RV10-List: Pitch Trim tuning Tim has an excellent writeup on his site explaining the issue and how to fix it: http://www.myrv10.com/N104CD/maintenance/20080622/index.html It just recently saved my sanity trying to align my trim tabs after a trim b ellcrank rework. Lenny > On Sep 9, 2017, at 7:25 AM, Carlos Trigo wrote: > > I am now in the process of final installation and testing the Elevator Tri m system, and I could not find enough information on this. > > Especially for those who finished building and are already flying, you pro bably already heard this question a thousand times, so please forgive hearin g it once more. > > When lowering the Pitch trim tabs, both go down simultaneously and both re ach the bottom limit at the same time and angle. > But when they go the other direction, i.e trim tabs up, the right side tab goes till the limit but the left trim tab doesn=99t. It goes up slowe r than the right tab, then stops moving and even reverses the movement, not r eaching the upper angle limit. > Is this normal? > > I did check all the Pitch trim system components, and they all seem to be i nstalled by the plans. > > Need help! > Carlos ________________________________ Message 4 _____________________________________ Time: 11:10:40 AM PST US Subject: RV10-List: Re: Fuel line testing From: "rvdave" I've proven that my system does not have leak down pressure unless I hook up purge valve. I can't find any leaks at inlet or outlet connections so not sure if air is a way to test valve? I have a message sent to Don at Airflow and will await his reply. -------- Dave Ford RV6 for sale RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=472722#472722 ________________________________ Message 5 _____________________________________ Time: 04:10:45 PM PST US From: Kelly McMullen Subject: Re: RV10-List: Pitch Trim tuning Excellent. I just did Bill's procedure to verify my trim. No need for digital level, nothing but Mk 1 eyeballs and a small ruler. 'My left tab was fine, my right tab needed one turn of adjustment. So I guess I will gain 5 kts on next flight. ;^) -sent from the I-droid implanted in my forearm On Sat, Sep 9, 2017 at 5:40 AM, wrote: > Hey Carlos, > > I saved this from years ago. VERY common problem. I=99ll attach a s a PDF > file. > > Later, =93 Lew > > *From:* Carlos Trigo > *Sent:* Saturday, September 09, 2017 7:25 AM > *To:* rv10-list@matronics.com > *Subject:* RV10-List: Pitch Trim tuning > > > I am now in the process of final installation and testing the Elevator > Trim system, and I could not find enough information on this. > > > Especially for those who finished building and are already flying, you > probably already heard this question a thousand times, so please forgive > hearing it once more. > > > When lowering the Pitch trim tabs, both go down simultaneously and both > reach the bottom limit at the same time and angle. > > But when they go the other direction, i.e trim tabs up, the right side ta b > goes till the limit but the left trim tab doesn=99t. It goes up slo wer than > the right tab, then stops moving and even reverses the movement, not > reaching the upper angle limit. > > Is this normal? > > > I did check all the Pitch trim system components, and they all seem to be > installed by the plans. > > > Need help! > > Carlos > ________________________________ Message 6 _____________________________________ Time: 05:15:09 PM PST US Subject: RV10-List: Re: Pitch Trim tuning From: "Bob Turner" Not what you asked, but... Most people find the stock trim speed about right for airspeeds less than 100 knots. For higher airspeeds it's nice to have a way of slowing the trim speed down. -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=472730#472730 ------------------------------------------------------------------------------------- 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.