The RV-4 is one of the most succesful and best selling "home-builds" in the world, the RV-4 is an aerobatic aircraft that is quite capable in terms of cross-country, in fact this particlar model is based on the RV-4 used by Jon Johanson for his famous Millenium 2000 Round the World Solo flight.
This great looking ARF is built using a traditional semi sheeted light-ply/balsa construction for a combination of low weight and strength. The covering is printed to give a high detail finish which includes panel lines and rivets while the high gloss finish makes for easy cleaning and excellent durability. The RV-4 is supplied with a very comprehensive hardware kit that includes a unique engine/motor firewall mount system for either glow or EP power trains, an alloy spinner, fuel tank & engine mounts, heavy duty & anodised clevis and pushrods, etc. The RV-4 is also practical, the tail is removable and the wings are a plug in arrangement, the model also features robust main under-carriage and a steerable tail wheel.
The RV-4 features all those attibutes you would look for in a great sport model, a light flying weight combined with a generous wing area for predictable yet nimble flight characteristics, flaps for excellent slow speed handling and of course robustness & practicality, throw in the great scale looks, the high level of included hardware and the very attractive price, it's pretty clear the RV-4 is a steal!
• Lightweight Construction
• Printed Covering with High Level of Detail
• Robust Under-Carriage
• Comprehensive Hardware Kit Included
• Glow or Electric Power
• Fast Build
• Plug In Wing
Your Own 6 Channel TX/RX
7 x Std Servo (6 x for EP version)
0.46 ~ 0.52 Two Stroke Glow Engine
42mm Motor 600kv ~ 650kv (EP Version)
3300mAh ~ 4000mAh 4s Lipo Battery (EP Version)
60A OPTO ESC (EP Version)
RX On/Off Switch
UBEC/Regulator if applicable (Lipo RX Battery)
Ok here again, action speaks louder than words! You will see so e loops, rolls, stall turn, inverted and half-assed knife edge etc.
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See it flies, action speaks louder than words!Looks as good as it flies and flies as good as it looks. 15cc gas used with 15x6 prop. Flies slow, lands slow. No bad habit. Low stall speed even with the weight of gasso and 100g of lead on the tail. Elevator push rod has some friction but it was rectified by changing them to full metal push rods. Flaps are redundant but sure can slow down the landing speed. Servo tray flexes easily, but not a 3D plane so I don't care muchFurther to my earlier review - I flew the plane today and it is a great flyer. I leveled out all control surfaces before flying and it flew "out of the box" with no trims needed. I used the recommended motor NTM 4248/650 kV and prop 14x6. With 4S, 3000 mAh it drew 45A and gave a torque of 3 kg which is same as full weight of plane with battery. It is a very forgiving plane, easy to fly almost like a trainer. Only small problem- the supplied wheels are off center and too large for the wheel cover so I recommend installing slightly smaller wheels. Still as I said in my earlier review, the plane is a true bargain, very nice looking with lots of details as well as a great flyer. A grand 5 crowns versionI have just received mine and just started assembly so not flown as yet.
First impressions- it looks very quality and well presented. People who are speculating if it is an old V-Mar model I can tell you the instruction book is V-Mar dated 2002!
The model gives the impression of one of the very early Chineese type kits altho I think V-Mar made in Vietnam. Very impressed with the standard of the hardware package - for a change! Very nice anodised and colouerd alloy horns and push rod connectors. And a very clever EP conversion power pod module.
However as I started the assembly the very poor quality control at the factory became evident. Very nice F/glass wheel pants but when fitted to the fibreglass undercarriage the wheels will not revolve - they catch on the inside top of the wheel pant. I can only think of a smaller size wheel being the fix for this? I have left the pants off in the meantime.
When fitting the tail plane - the factory has left the slot in the tail joined with a block of balsa so the tail plane won't slide into the slot. I had to saw this block out and then sand the slot smooth. The little metal fitting that slots into the rudder to activate the tail wheel is not glued in .
The main wings have a wooden dowell locating peg at their trailing edge which fits into the fuselage. Mine only had one dowell in one of the wings and it was about 5 sizes too big and hadKit arrived and as always in good condition. Workmanship of the plane is truly very good except for one thing. The white cover is semi transparent. Prints on the cover is excellent so I wonder why manufacturer did not use a white opaque covering film. You can actually see it on the pictures here if you look closely - you can see the balsa/ply structure on body and wings. One great feature- the landing gear is mounted with shock absorbing rubber inserts. But it seems from the manual that battery mounting is not so clever using a plywood box mounted to the firewall. Not sure if need to remove the cowling to install battery. But will see how it can be done in an easy way once I build the plane. Another feature not mentioned in the description - it comes with the pilot and a great looking 3D instrument panel. I am not sure if pilot is supposed to look like Jon Johansen whom I think is od Scandinavian decent? To me he looks like a South American. In all, this is a great looking plane, very high quality and at a fantastic low price. I am sure it will be a great flyer - will let you know.