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
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | 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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 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 <trigo@mail.telepac.pt> 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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Fuel line testing |
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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 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, <lewgall@charter.net> 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 <trigo@mail.telepac.pt>
> *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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Pitch Trim tuning |
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
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|