Valley View RC 20cc Gasoline Engine
|Displacement:||1.22 cu in (20cc)|
|Weight:||23 oz (652g) engine only; 32 oz (907g) with all accessories|
|RPM Range:||1650 - 9000|
|Output:||2.5 hp (1.86kW) @ 9000 RPM|
|Fuel/Oil Requirements:||89-octane unleaded gasoline; Red Line synthetic two-stroke oil or equivalent|
|Carburetor:||Walbro WT-408 single barrel|
|Spark Plug:||NGK CM-6|
|Ignition:||Rxcel CDI electronic with Hall effect sensor|
|Ignition Cutoff:||Rxcel Opto Type K1 optical|
|Recommended Propeller Sizes:||14x10, 15x8, 16x6, 16x8, 17x6, 17x8|
|Muffler as Tested:||J'tec Pitts muffler|
|Available From:||Valley View RC, 5518 163rd Street East, Suite C, Puyallup, Washington 98375|
The task seemed simple at the time. Find an engine for a large-scale Nitroplanes Pitts Python biplane. Nitroplanes did a terrific video of this model in action, but it was with electric power. They'd asked if I'd do this review with an engine.
The model will fly on a .90 nitro four-stroke. I'd actually located one, but it would have been at the bottom end of the power requirements for this big biplane.
Research showed that a 20cc two-stroke gasoline engine would be just the ticket for this airframe, fitting perfectly within the cowl and with the benefit of far lower operating costs. Pretty much all of the engine vendors dealing in this size wanted their engine showcased in their airframe and Nitroplanes doesn't carry an engine of that size.
It is my pleasure to present an initial review of the Valley View RC 20cc gas engine from Tom Denney, Linda Denney, Tim Hanstine and the great folks at Valley View RC in Puyallup, Washington. Tom and Linda's family business has their own line of gas engines and beechwood propellers. Tim shipped samples of their 16x8 and very popular 17x6 along with this beautiful engine.
This will represent my first foray into gasoline-powered aviation. The engine sports a genuine Walbro carburetor, Rxcel electronic ignition and an NGK spark plug, all part of the package. According to VVRC, it takes the good aspects of a more well-known brand and improves on both its good and bad aspects for added reliability and longevity.
Since this engine is going in the round cowl of a Pitts biplane, what better muffler than one of VVRC's J'tec 20cc Pitts mufflers?
The Valley View RC 20cc engine comes with the following:
Needed to complete the installation:
It came securely packed and protected within a molded foam cradle. There was no trace of any assembly oils, cleaning solvents, casting slag or casting flash and the "VVRC" trademark was neatly laser engraved on the crankcase below the exhaust port. According to Valley View RC, the engine comes ready to run with mixture screws on the Walbro carburetor and ignition timing via the Hall effect sensor already preset. Should any adjustments become necessary for fine tuning during and after the break-in procedure, the detailed, easy-to-read manual explains how.
My foray into gasoline power began with the basic installation of the engine using the supplied mounts. From there, it was easy to determine what I'd need next one step at a time.
The high speed FHSS-3 frame rate of the Sanwa RX-861 receiver I'd planned on using along with an Airtronics SD-10GS transmitter meant that an analog throttle servo might have presented problems according to Mike Greenshields at Global Hobby Distributors. Off went the LHS analog servo Mike forwarded for these reviews in exchange for a pair of Airtronics/Sanwa 94835 standard ball bearing digitals. One for throttle, the other for a radio controlled choke. I'd checked the fit of standard servos in the model's motor/engine mount and they were a perfect fit. Seems Nitroplanes may have done their homework and it didn't take long to cut and bend some pushrods and to get both servos working the carburetor.
Based on a discussion thread on it was necessary to cut an opening in the firewall to clear a similar engine. I did so, but the dimensions and construction of the VVRC engine may be different; mounting the engine in the manner posted on RCU would have placed it too far rearward.
I knew that I'd need oil before long. A lot of motorsports distributors have come and gone from this area, which is surprising given its close proximity to world famous Glamis, California and its sand dunes.
What better place to go than one run by some old friends? Valley V-Twin in Indio, California is run by George and Halle Fetty; Halle and I go back years as coworkers. They checked the Red Line catalog and discovered that their synthetic two-stroke oil could be ordered by the bottle and not the case.
Getting the servos installed and working gave me a great feeling of accomplishment. I could finally see the home stretch of a very long review process!
As of this writing, I've finally had all of my questions answered regarding this airframe and what I'll need to make it fly. These issues have kept the reviews of the airframe and engine in limbo for far longer than anticipated since the model is primarily designed as an electric.
VVRC pilot Victor Chatellier puts one of these engines through its paces on a VVRC airframe:
The Valley View RC 20cc gasoline engine is, by all online accounts, a real winner. It is a beautiful piece of the machinist's art and promises to turn the Pitts into a screamer.
I for one am looking forward to getting this engine and model airborne and to do the second parts of these reviews.
My sincerest thanks go to Tom Denney, Linda Denney, Tim Hanstine and the crew at Valley View RC. Their support throughout the review process thus far has been invaluable. I should mention that I spoke to Tim on his last day with Valley View and I wish him nothing but success.
George and Halle Fetty of Valley V-Twin are longtime friends and they'll continue to be my source for Red Line oil. Crystal Ng of Nitroplanes is one of the most charming product reps with whom I've ever had the pleasure of working. Her and chief engineer Roland have been as close as a phone call or email. I can always count on Mike Greenshields of Global Hobby Distributors for virtually anything having to do with electronics. For graphics, I can likewise count on Callie Soden of Callie Graphics whose peerless work adorns the airframe.
If SupaTim and the rest of the VV Gang have their name on an engine, I'm all over it! They are super people/organization. Met Tim at Toledo this year and had a nice conversation with him. I'm thinking there will be more motors with VVRC on them and their sales will more than likely shoot through the roof!
I happen to live in Indio, CA. and own a Harley Davidson motorcycle. George Fetty at Valley V Twin has been servicing my mc for many years. I didn't realize I could get Red Line oil from him until I read this engine review. I also have 3 VVRC 20cc engines. Small world isn't it.
United States, CA, Waterford
Joined Aug 2012
I won one of these engines at last year Wenatchee Huckfest and put it in a Aeroworks GT Trainer and this motor has been lights out!! 1 Flip and she is off and running. It runs cool and has never missed a beat since the day I got it. I probaly have around 20 Gallons through it and it seems to just keep getting stronger and stronger!! Thanks again VV!