By Bob Hopman ( b.hopman-@-gmx.net )
An extraordinary model caught
my eyes when I visited a German site, by Artur Blömker, called www.dynamic-soaring.de. This very interesting website with lots of good information and footage
of Dynamic Soaring (DS) in Germany, also tells about the TamLam Team (three friends
practicing DS) and their SuperRennTamLam (SRTL), a concept
by David Pichler. The plane is designed specially for DS, as you can see…
a T-tail, one piece wing with straight LE for extra stability. After talking
with the builder Thomas Nothdurft other specifications were showing a very
robust sailplane. Among these specs were a very strong Carbon/Kevlar/Glass
fuselage and if wanted lots of extra carbon in the wing, which has a modified
RG15 wing section and enough room for strong servos.
After knowing this information (and falling in love with the SRTL’s looks)
I knew I wanted one, a strong plane for the slope, capable of doing DS.
I fly the front-side of the slope most of the time, but got my first experiences
in DS last year which I can say IS a real virus. There for I would like to
use any opportunity to go and fly DS again, with the right plane. Still if
not ballasted the SRTL can be a good plane for the front side as well.
First of all some technical information on the SRTL (Carbon version 1)
What is in the kit?
it was delivered in a very stable wooden package (the only good way to transport
such a large wing) I was happy to see it survived the trip in perfect condition!
The kit consists of the following:
1 Wing, 1
fuselage, 1 stab, 4 glass servo lits (cover servo opening), 4 glass lits (covering
on the linkage side), 4 rudder horns, piano wire, quick links, 1 mount for the servos in the fuselage, Glass tape for mounting the wing a lit for the
ballast bay and of course the manual. This meant that except for the electronics
everything was there to get the SRTL up in the air.
So what is not in the kit?
servos, 2 flap servos, 1 rudder servo, 1 elevator servo, 1 receiver, 1 battery
pack, a wire harness some high current connectors (to connect the wing servos)
and if wanted a switch.
I in my case
I bought 4 Robbe S3150 (37 Nm) servos for the wing (with the servo frames
for it from www.servorahmen.de) a
Graupner C3041 (26 Nm) servo for the elevator and a Dymond D200 (plastic gear
26 Nm) for rudder. The receiver is a Schulze 835w and the battery a Sanyo
2300 mAh NiMh 4 cell pack. And of course 2 component 24hrs epoxy as some other
Building the SRTL
isn’t really much left to build the SRTL, because rudder and elevator are
pre-hinged and linkages in the fuselage have already been placed! In the fuselage
this means the placement of battery, receiver which should be kept in place
by some pollster. Now this is done the servos will be placed on a wooden servo
mount, which will be kept in place by two screws which enter the fuselage
from the bottom side. Balancing the plane will be done in the end.
In the wing
the linkages have to be build, but the holes through the wing have already
been prepared so the place of the servo is set. Installing the servos with
the frames from M. Frey is peanuts (where I used to need some time to make
the right wooden frames that would fit) and I like them being secured by 2
screws which makes removing for repair very easy. With the S3150 everything
can be kept within the wings surface for the flaps, for ailerons you need
the lit which has been prepared because the nearly 11mm servo just fits in
the wing. Ballast can be inserted in the wing if needed.
Some special features
the really strong wing the SRTL has some very useful features, which makes
it easy to build but also reliable on the slope. First of all the wing is
secured with tape. This is an unusual kind of fixating a wing on the fuselage
(also seen with the FS models from Sport Klemm and the Erwin5 from PCM). Still
with a standing DS record at 325km/h (202 mph) and some rough landings out
of experience it has proven to be a very reliable method and it saves wings
The very strong
T-tail configuration gives lots of stability in flight with a good rudder
Some information on the builder Thomas Nothdurft
very willing to inform more on the plane than the information which is available
on the website.
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No commercial use or publication (e.g. on other www or ftp sites, print media) without the written consent from the author(s)