VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 02-28-2021, 07:12 PM
jbryant520 jbryant520 is offline
 
Join Date: Jan 2021
Location: Byhalia Mississippi
Posts: 10
Default Viking or UL power -12

Anyone here flying the RV-12 with Viking or UL-Power ?
What has your experience been with ether of the two?

Thanks
Joe
Reply With Quote
  #2  
Old 03-01-2021, 11:46 AM
R7237 R7237 is offline
 
Join Date: Dec 2009
Location: Savannah, GA
Posts: 108
Default

Quite a few ULPower. I am building my 12iS with a ULPower engine. Don't know anything about Viking.
Reply With Quote
  #3  
Old 03-01-2021, 01:33 PM
12vaitor 12vaitor is offline
 
Join Date: Aug 2012
Location: Panama City, FL
Posts: 178
Default

I have a Viking 110 powered RV-12 and have been pretty happy with it so far. No major issues, however I did do some of the upgrades like the steel flywheel replacement for the original aluminum unit, oil tank pickup mod, and adding a thermostat. The fuel system and electrical are 100% custom designed. The fuel module design is similar to what Van's installed in the RV-12iS, dual pumps, filters, and a regulator mounted in the tailcone near the baggage bulkhead. Electrical is dual batteries with three electrical busses (A, B, and avionics). The Dual ECU is a Mark Hubelbank design made specifically for the Viking 110, which I like because I can connect a PC to it and make adjustments/updates.

I have seen photos of a couple of Viking 130 powered RV-12s, however nothing on how they fly. Given the weight and size of that engine I expect the CG is at or past the forward limit at light load weights. I put the dual batteries in the tailcone, along with the fuel module, to help get the CG at the forward limit at zero fuel weight.

I did look at modifying a 912UL/S with Fuel Injection and a few other performance parts however it did not appear to be very cost effective unless you start with a runout core to rebuild. That option appears to be better developed today than it was 8 years ago when I decided on the Viking Honda.

I have been following the new engine being developed by John Torode (Vashon & Dynon) and will take a look at installing one when it becomes available. Looks like a cross of an O-200 style design with electronic ignition and fuel injection at far less weight. From the update below, I would guess Dynon is developing the ECU (combining the EMS-220 with the ECU would be a great product). I expect the Vashon Ranger is the target of this engine, which would also make it perfect for the RV-12.

http://www.epi-eng.com/aircraft_engi...aft_engine.htm

A bit of advice, if you want to build and fly as soon as possible stick with the standard Van's Rotax. If you like doing the engineering and design work in addition to building, an alternative engine can add another dimension to your experience.

John Salak
RV-12 N896HS
Reply With Quote
  #4  
Old 03-01-2021, 04:39 PM
jbryant520 jbryant520 is offline
 
Join Date: Jan 2021
Location: Byhalia Mississippi
Posts: 10
Default

Thanks for the advice John.
Reply With Quote
  #5  
Old 03-01-2021, 04:45 PM
jbryant520 jbryant520 is offline
 
Join Date: Jan 2021
Location: Byhalia Mississippi
Posts: 10
Default UL-Power

Quote:
Originally Posted by R7237 View Post
Quite a few ULPower. I am building my 12iS with a ULPower engine. .

Thanks I sent you a PM.

Joe
Reply With Quote
  #6  
Old 03-02-2021, 07:44 AM
zolotiyeruki zolotiyeruki is offline
 
Join Date: Feb 2020
Location: Oswego, IL
Posts: 16
Default

Quote:
Originally Posted by 12vaitor View Post
I have been following the new engine being developed by John Torode (Vashon & Dynon) and will take a look at installing one when it becomes available. Looks like a cross of an O-200 style design with electronic ignition and fuel injection at far less weight. From the update below, I would guess Dynon is developing the ECU (combining the EMS-220 with the ECU would be a great product). I expect the Vashon Ranger is the target of this engine, which would also make it perfect for the RV-12.

http://www.epi-eng.com/aircraft_engi...aft_engine.htm
I've been following that same engine's development (well, as much as gets posted, which isn't much). Have there been any updates from anyone about that engine since last August? Saving 60lbs compared to an O-235, while producing a bit more horsepower, is nothing to sniff at. I know people like power and speed, but this engine would be a great match for the RV-9, and a fantastic engine for something like a Long-EZ, not to mention basically anything else out there that's running an O-200 or O-235 or a Rotax.
Reply With Quote
  #7  
Old 03-02-2021, 09:45 AM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 4,000
Default

Quote:
Originally Posted by zolotiyeruki View Post
I've been following that same engine's development (well, as much as gets posted, which isn't much). Have there been any updates from anyone about that engine since last August? Saving 60lbs compared to an O-235, while producing a bit more horsepower, is nothing to sniff at. I know people like power and speed, but this engine would be a great match for the RV-9, and a fantastic engine for something like a Long-EZ, not to mention basically anything else out there that's running an O-200 or O-235 or a Rotax.
Van's new high wing STOL.............................
__________________
VAF #897 Warren Moretti
2020 =VAF= Dues PAID
Save the Planet…...............It’s the only place that has beer!
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 03:52 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.