Links to MVVS pages and information

The unusual rotation feature of the S/R type engines allows either side or rear exhaust configuration. Choose side or rear exhaust configuration according to your preference, before you run the engine for the first time.
Since 2001, the engines are produced on modern CNC machines and hand-assembled to obtain best fits. Pride of ownership is not a stranger at MVVS.
The piston fit may be quite tight, so give the engines the running in that is needed. You will be rewarded for your patience by above average power and excellent longevity.

Unless otherwise stated in the engine description, the fuel for these engines, as advised by MVVS, consists of 80% methanol (at least 98%pure), and 20% castor oil. Up to 5% nitromethane max. can be added to the standard fuel
For the large ringed 1.60 and 2.10 glow engines, use at least 15% high quality glow fuel oil, and 5-10% nitromethane.
The small sizes of 2cc up to 4.6cc will not run well using synthetic oil. Use at least 50% castor oil in the mix. If you insist on using synthetic oil without adding Castor oil, be prepared for a long running in period in which the engine performs way below par.
As noted before, the fuel can be made up with up to 5% Nitromethane. If you want to use more nitromethane, the head should be shimmed with an extra gasket in order to lower the compression ratio, or better still, use a lowered compression combustion button or reworked head.
As a glow plug for general use I recommend the types Novarossi #5, Enya #3, OS#8 or OS-F. These are all available at the better model airplane suppliers worldwide. The engines are supplied with a Novarossi plug fitted. For the combat competition engines the Novarossi #5 and #6 plugs are best.
For running glow engines, download my one page flier here (based on MVVS instructions).
This is the MVVS documentation as supplied with each engine 3.5cc - 15cc
For use of a Walbro carbs with glow fuel, read the Walbro technical report first.  PRME does not stock engines equipped with a Walbro carb. They will be ordered on demand.
For running in glow engines, read this!

A word about the MVVS tuned mufflers: These are very much like the normal single chamber mufflers, except their volume is tuned to the engine. Back pressure is increased, and power output is about equal to open exhaust running. PRME can provide a kit for these mufflers with added second muffler chamber (like the A-types) for ultra-quiet operation to as low as 74 dB(A) at 7 meters. (84dB at 9 ft) The added muffler improves power by about 200 rpm, and removes the high pitched note from the exhaust sound using the low-pass filter technique.

Klick on the thumbnail for a larger image of the engine.
Unless otherwise stated, all engines are supplied without mufflers. Suitable mufflers are suggested with most engines

.11

.15

.21 glow, The mighty MVVS!

Out of production

MVVS 3,5 GFS/R - ABC - RC (.21) cat.#3046
0,62 kW @ 21 000 rpm
235 grams
carb 3216


tuned muffler 3243(GFS)

3244(GFR) for 13000-17000 rpm

Standard muffler 3235


3235A (quiet muffler)


3241A, 3242A 3243A, and 3244A: The A-type two-chamber tuned muffler is an add-on kit, as modified by PRME. The added second muffler chamber removes the higher pitch notes in the sound, and reduces total noise with ~5 to 8 dB(A), at the same time it also provides a slight increase in power output, just to prove that power is not necessarily noisy. The A-type muffler add-on kit is supplied as a DIY set to facilitate stinger location choice.

props:7x4 to 9x6

Repair parts are availalable.

This is a good 1/12 scale RC-combat engine for fighter planes where the original had a span of 12 metres or more.
With a MA 8x5 prop the standard engine was tached at 16400 rpm using the 3235 muffler. Then unwinding in the air to it's full potential. The 3235A muffler turns some 600 rpm less, and brings the 8x5 prop within RC combat limits. With a 9x4 APC prop, and the tuned muffler #3243, power is "more than adequate" and right up to the rules' limit of 16.000 rpm. For high rpm operation, the 3241 or 3242 mufflers for the .15 engine move the power curve up the rpm scale quite a bit.

To improve cooling, the cooling heads of the 3048 combat engine and the .28 engine both can be made to fit with some extra work, and improve both looks, and throttle setting consistency throughout the flight. This requires the use of a separate combustion chamber button.

.26 combat (USA)
Out of production

MVVS 4,2 GFS/R ABC RC combat (cat.# 3048)
0,73 kW @ 17,000 rpm
301 grams
tuned muffler 3243(GFS) 3244(GFR) for 13000-18000 rpm. The A-type mufflers 3243A and 3244A can also be used, as documented in the .21 engine.

This long stroke engine is designed for RC air combat's largest planes, and goes like hell with 9x4 to 9x7 props. The cooling head also can be made to fit the .21 and .25 engine.

To special order:
.25 combat (ACES)
Recommended props:
8x6; 8x7; 8x8
9x4; 9x5; 9x6
for ACES competition:
9x5; 8.5x5.5

PRME/MVVS 4,0 GFS/R ABC RC combat
0,75 kW @ 20,000 rpm
301 grams
tuned muffler 3243(GFS) 3244(GFR) for 13000-18000 rpm
The A-type muffler add-on kits 3243A and 3244A can also be used, as documented in the .21 engine.

Based on the .28 and .21 engine, This ACES legal short stroke engine was originally built by PRME for RC aircombat's largest planes under ACES regulations, using a .21 crankshaft. A 9x5 prop gives excellent results, and turns right up to the allowed limits.
The timing is quite moderate for low end grunt, whilst the rpm range is still adaptable between 12,000 and 20,000 rpm using the appropriate muffler system.This engine makes light work with planes of up to 1500 grams (3 lbs), where the original warbird had in excess of 25 square meters wing surface

The ACES-legal .25 engine is still produced to order by MVVS.

.28  glow

MVVS 4,6 GFS/R -ABC- RC (.28) cat.# 3047
0,8 kW@ 17000 rpm
280 gr
carb 3216
muffler 3243(GFS) 3244(GFR
The A-type mufflers 3243A and 3244A can also be used, as documented in the .21 engine.

3235(standard) 3235A(quiet)
props 9x5 up to 10x6

.40 glow

MVVS 6,5 GFS/R - ABC - RC #3066
0,92kW @  15000 rpm
372 gr
carb 3216 3217
tuned muffler 3248 (GFS) 3249 (GFR) for 10,000-14,000 rpm

mufler 3245A (quiet) for side exhaust (GFS) only

props:
9x6, 9x7, 10x5, 10x6

This engine is famous for it's crisp throttle response.

RCME report page1
RCME report page2
RCME report page3

MVVS 6,5 GFS/R - ABC - RC Quickie 500 #3068
1,20  kW@ 23000 rpm
372 gr
carb 3219

Some Quickie engine have blue heads
Tuned muffler 3246

AWSOME PERFORMANCE in the .40 sports package, the quickie has increased big end play, nearly 180 degrees exhaust port timing, and special bearings.
The engine replaces the previous GFRT and GRRT pylon engines, now no longer produced; (The Quickie cylinder set fits the old #3065 0.40 GRRT engines and 3070 pylon engines)
When running engines in excess of 20,000 rpm, please take care of sufficient big end play. 0.06mm-0.08mm is recommended by PRME and works well. The MVVS standard play is 0.05mm

MVVS 7,5 GFS/R - ABC - RC 3076
1.10 kW @ 15000 rpm
378 grams
carb 3216 3217
muffler 3248 3249

3245A
props:
9x7, 9x8, 10x8, 11x6, 11x7 

MVVS 8.0 GFS/R - ABC - RC--# 3077
1.13 kW @  15000 rpm
379 grams
carb 3216 3217
tuned mufflers 3248(GFS), 3249(GFR) for 10,000-14,000 rpm
Standard muffler 3245A (quiet)

props:
10x8 , 11x6, 11x7

MVVS 8,0 GFS/R ABC Acrobat cat.# 3077A for CL flight
0.95 kW@12000 rpm

The 8,0 GRR rear rotary valve Acrobat engine is no longer produced

MVVS 10 GFS/R - ABC - RC
cat #: 3090
1.30 kW @  15000 rpm
549 grams
carb 3219
Mufflers:
tuned: 3250, 3253 for 9,000-12,000 rpm
MVVS manuals
(3250) (3253)
3255, 3255A (quiet) (GFS)
3267 (GFS)
props: 15x6, 14x6, 14x7, 14x8, 13x7, 13x9

.77 glow

MVVS 12,7 GFS/R - ABC - RC #3092
1.66 kW @ 13 000
565 gr
carb 3219
Mufflers:
See .61 engine.
props
16x6, 15x7, 15x6, 14x6 - 14x8, 13x7 - 13x9

As the old saying goes – "there is no substitute for cubic inches." This is exactly what MVVS had done with their MVVS .77, i.e., increase the bore of their existing .61 from 23mm to 26mm, with both engines sharing the same crankcase and cylinder castings. The results in the .77 having the same physical size as the .61 with the same mounting bolt pattern, etc., but actually weighing a fraction less.

_.91 glow
Also available with a helicopter cooling head, which extends forward over the carb

MVVS 15 GFS/R - ABC - RC #3089 or 3089-H
1.8 kW @11000rpm
552 gr
carb 3222
Mufflers: See .61 engine
props: 14x7 to 15x10
A stump-pulling beauty, this newly designed engine is designed to fit in the space of a standard 10cc (.61), and drops right in. It is lighter than the MVVS .61, #3090 and may well help you comply with those ever increasing imposed noise limits, because it makes light work with pulling large props.
The Heli engine has a large cooling head, extending forward over the carb

MVVS 26 GFS - RC cat. # 3094G
2,9  kW @ 9000 rpm, max rpm 10000
836 grams
Muffler 3266/26 , 3270
props: 16x10, 6x12,  17x11, 18x8, 18x10.
Ringed piston in steel liner. This is the glow version of the petrol engine. and replaces the previous 1.50. The connecting rod is bronze bushed.
The fuel for the bronze bushed engines needs at least 15% high quality oil.
See the instruction leaflet.

MVVS 35 GFS - cat. #3098G
3,10 kW @ 8500 rpm
1470 gr

Muffler 3268/35 , or 3271
props
16x12  17x11  18x10 20x8 20x10
Ringed piston in steel liner. The glow engines have a bronze bushed connecting rod
Latest MVVS instructions: The fuel needs 15% quality oil and 5-10% nitromethane. See the instruction documentation.