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Old 01-20-2019, 10:32 AM
RV7 To Go RV7 To Go is offline
Join Date: May 2011
Location: Ontario, Canada
Posts: 158

Pretty sure mine were AN3-41A, which I had to change to AN3-43A with the shutter installation. You will probably need a dash longer if using an 1/8" spacer. I would measure what thickness you have and order accordingly as everyone does it a little differently.

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Old 01-20-2019, 11:01 AM
RotaVR RotaVR is offline
Join Date: Aug 2011
Location: LaCrosse, WI
Posts: 19
Default TCW butterfly valve

I see TCW has the butterfly valve available in either 3" or 4" size. Not sure if they are talking swaged end or duct sizing?
An option might be to use a butterfly valve with a lockable Bowden instead of electrical operation. I haven't searched to see if this type butterfly valve is available from other sources.
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Old 08-17-2019, 02:50 PM
Northernliving Northernliving is offline
Join Date: May 2005
Location: Boston, MA
Posts: 168
Default Pics

It took me a while to get around to posting my install using the small linear actuator. I use this all the time now, even during the summer and I'm able to dial my oil temp right where I want it. Here is a short video of the bracket that I cut on the water jet and the actuator working. You can see in the photos that I installed some spacer stock to keep the shutter slight off the cooler so it wouldn't block as much flow and so that it wouldn't pinch the shutter, causing it to bind. Sorry, I'm not having luck posting photos, so I've also included the link that should be public.
Brian J.
Boston, MA
RV8 Based at ORH - Purchased
RV8 - The Dream - Under Construction

Last edited by Northernliving : 08-17-2019 at 03:08 PM.
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Old 08-22-2019, 02:56 PM
Tom @ N269CP Tom @ N269CP is offline
Join Date: Oct 2017
Location: Green Cove Springs, FL
Posts: 79

Originally Posted by rdrcrmatt View Post
I installed this in my oil cooler scat tube where it meets the oil cooler baffle.

Worked great for winter. I was getting oil temps in the low 140F range when it was 0F OAT. Now I can get 200F in the same conditions.
This is the route I've taken as well. Glad to hear it's working so well for you. I've not used it yet in winter conditions.
Kind regards,

Machinery Engineer
RV-8 N269CP
O-360-A1A w/Hartzell CS prop on 100LL
Slick-IC+PMag ignitions
Steam gauges
EI UBG-16, FP-5, & MUX-8A datalogger
Garmin Aera 660
TruTrak autopilot (GPS coupled)
uAvionix Tailbeacon ADSB-Out
Infinity grip w/Matronics trim speed control
Reiff engine preheater
TCW oil cooler air damper w/servo drive
AntiSplat oil mist separator
MH O2 system

Location: Santa Fe, NM (KSAF)
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