Eraser2000 F3B/F3J (Czech Republic)
Eraser (old)
Wing Length 3,170mm
Double Dihedral
Double Dihedral
Chord Length 245mm
Wing type MH-32
Wing Area 68dm2 64dm2
Wing Load
Structure Glass-rohacell-Carbon(F3B)
Portability 3 pieces, 2 points screw
Tail plane
Tail type V-Tail
other 8%NASA, 2 points screw
Total Weight


Radio gear
6 Servos, 7 Channels over
Fuselage Length
1,495mm, Mold/Carbon reinforced

The relative small sailplanes like Eraser2000/F3J is recently
becoming to be more and more important in the latest F3J competitions all over Europe, because you can make very fast and high starts. It's so lightly built you can still make the most of the smallest thermals, for example, in the morning or in the evening (usually during the fly-off !).
Eraser2000 is one of F3J/F3B model with high performance and quality made in Czech Republic, which is designed by
Lubos Pazderka. Mr. Karel Balatka, my best friend, felt that he was very reliable man when he visited him. The finished surface is excellent quality. Since the fuselage is comparatively fat, it is easier for us to assemble radio gears. In Japan Mr. Iwata has used Eraser2000 at first in the all Japan F3B Championship held in Sekijyuku, Japan, who is a leader of Akagi Soaring Club in Saitama, Japan. It was criticized by Mr. Nagai that the airfoil of Eraser seemed to be bent a little at the time of launching and turning in task C of F3B. So the current version of Eraser2000 was reinforced by the carbon cross, as of October 2000. Mr.Iwata has pointed out that a little delay occurred at the turning in the task C of F3B. Therefore the wire linkage control rod has been replaced by the carbon rods as well. It resulted to make us enable to turn very quickly in the task.
The wing tip of the Eraser2000 F3J version has two type, that is, curl type and flat type. But both wing are structured by glass-balsa-glass/carbon sandwich. The wing tip of F3B version is the flat type only, but glass-rohacell-carbon sandwich. Below you find a picture and the layout of the 'old' Eraser. As you can see the wingspan is a little bit bigger than new one and it has curved up wingtips. Lubos told that the main reason for making the Eraser 2000 was the American market. They prefer a flat wing construction whereas the curved wing tips are preferred in Europe. But it is still possible to get the curved wing tips if you want. In fact most people take the Eraser without curved wing tips for F3B and with curving for F3J ! Another amazing advantage when you order an Eraser with Lubos Pazderka : you can choose your own color combination ! Just have a look at his own model. You can ask for anything you like.
Eclipse Czech /Mr. Lubos Pazderka and Mr. Fusek, who is famous as the manufacturer of Eclipse V/F3J. Mr. Pazderka is a good pilot of F3J as well
Eraser(old) Plan Eraser2000 plan
Price/Shop Price:
Eraser2000 F3B: 860EUR (excluding tax and shipment)
Eraser2000 F3J: 720 EUR (excluding tax and shipment)

Eraser(old) Eraser2000
No lead
2000mA Battery (No lead for CG)
Eraser2000 Flaps
Nose (photo by Carles Aymat & Montse Alvarez,spain) Ballast Room(photo by Carles Aymat & Montse Alvarez, spain)
M.r Pazderka
Wing Tip end (photo by Carles Aymat & Montse Alvarez, spain) Fuselage end (photo by Carles Aymat & Montse Alvarez, spain) 9pin connector in the fuselage side
Designner's ship, Strange T-tail, Transparent light wing

There are more comments on Eraser2000
MH32 is a familiar for us, because this airfoil is used by the famous COBRA. MH32 is usually used in the speed task with the negative camber. The amount of this camber is depends on the models. A little expertise is required in order to decide it. Since the airfoil of Eraser2000 is different from the one of COBRA, has the double dihedral, the soarablity of Eraser2000 is excellent. Mr. Iwata got 1000points or around 1000points in the all Japan F3B Championship held at Sekijyuku, Japan, June 2000. The finished surface of the Eraser2000 seems to be a artistic work.
There are a lot of fliers who are not sensitive to the bending amount of the wing of Eraser2000. However the less bending of the wing, the more the fliers feel at ease at launching and task C. The current version has been reinforced by additional carbon cross, and has achieved very little bending.
The fuselage is fat like Ellipse, whose cross section is a right circle. Though it seems to be easy for us to build radio gear into the room, the servo horns unexpectedly contact with the inner surface of the nose corn, because the nose corn is too thick So the inner surface must be caved a little.
The fuselage can be bent near the root of V-tail, when Mr. Iwata bent it with his arms and leg. It might cause a delay of the response of turning in the task C. Therefore the fuselage of the latest version has been reinforced by the carbon rowing cross. Two Voltz micro maxx servos (or two other mini servos) just fit into the fuselage. You can put 4 standard battery cells of over 2000 mA in the front. By doing this you can be sure of having enough electricity with you for a couple of hours flying fun and at the same time you don't have to put any lead any more ! Also a standard receiver fits between the battery pack and the servos. If you look carefully - just behind the servos - you can see the glass fiber pipe to put some ballast in the plane. It's possible to increase the flying weight to over 2.6 kilos.
The thermal duration is magnificent. 10minutes flight seems to be easily achieved, though it depends on the skill of the pilots. The original version has too flexible wing and fuselage, but was good in torsion. I have no reports on the flight of the Eraser2000 improved version. I will load it up as soon as available.
Technical Note:
Table of Standard Trim are available.
Eraser Flyers:
The picture sent by the Eraser Flyers are shown here.

Updated on Jan. 12, 2002