Graupner Formule 1 Rennboot
Ron's attempt to prove that electric power is a viable alternative
to nitro engines.
 |
Manufacturer: Graupner
Name: Formule 1 rennboot LxBxH: 66 x 31cm Weight: 3kg Owner: Ronald van der Wijden |
|
Motor: Graupner 820BB
Speed Controller: Navy 570 by robbe Batteries: 2x 10 3000mah by Sanyo Prop: Propshop Hopup's: |
 |
I just had to find out if an electrically powered tunnel hull would
do just as well as a screaming nitro powered one...
I found out that it can be done, but the boat is incredibly heavy; this
makes it a challenge to get it in plane. Once it is, it runs beautifully;
the great hull and near scale outboard make it look almost like a real
one. Due to space limitations the speed hasn't been measured yet, but
a good 45 km/h is certainly reached.
In an attempt to reduce weight and make it easier to get the boat in
plane, special smaller and lighter cells will soon be replacing the
current ones.
It takes a few seconds to come into plane, but when it comes, it goes...
like crazy.
Great attitude; just like the real thing.
At the moment, progress is slow due to a number of other projects; as soon as we'll have some more info on its performance with the lighter cells we'll keep you updated on this rare but well performing little boat.
A new model is add to the fleet.
We desided to make another Graupner F1 tunnel with a motor inside inplace
of an outboatd one.
The one with the out board we still testing out, but so it seems
now the inbord version is faster. Take a look at the second F1 we
add to our fleet.
 |
I must say, i love the looks of this hull. The qualities are great, the sponcons are sharp, and every things fits. Even the drawings of the building are 1:1. Nothings better then a perfect building plane. (only not for a inboard moror) |
It almost looks like an outboard, but it is an inboard motor. We used the cover of an Kyosho speed 700 outboard engine so it would like the the real. The rest of the hardware comes from Hydro & marine. |
 |
 |
As for the motor we used an Graupner carbon 70/16volt. The
cooling that you see on the motor is a Gundert silicon colling.
(here we call it a pamala colling). The motor drives on 16 cells
beside the drive. |
The first test runs did some good. We managed to do some greet speeds and the manjure of steering was no probleme. That also said that the weight of the electoniks and the rest was good in place. |
 |
 |
The hull gets better in plain than the outboard one. |
Look at it goes. This is it first test run. |
 |
 |
Making it ready for another run. After the first run, we secure that every thing was oké. |
On the second run we had some problems. I was forgoten to programe the failsave. The boat took a spin and clapt on the other side of the lake. thank got...no damage to he hull. |
 |
 |
The top speed we reached on the first test day was 65,3km/h. Not bad we think. But with some changes we can manage the 70 easy. |
It finaly was time to paint the hull. Concerning colouring I did'nt have to think long about the diagram fortunately. |
 |
 |
I saw on the box from Graupner where the hull was in, picture
of the real one in the Valvoline collors. |
I have taped up firstly all parts provide which with a colour did not have, afterwards I have started with an undercoat and about that gone the white colour. |
 |
 |
Afterwards I have taped up all white parts where no other colour come on. And started painting the rest of the parts blue. Now the stickers are on it, i can paint it over with blank coat. I hope it is dry soon so i can put it back together, and hope to place some better speeds with it. |
Close up view from the hatch. |
 |
 |
Here you can see how if made a plate in the hatch with a gatch in it, for closing it. |
At the back of the cockpit is a pin, where the hatch is secured. |
 |
|
A view from the inside. |
a better close up. |
 |
 |
|
We keep you update about this project
This site is sponsored by:
2 Brothers R/C, Bussum.
All rights reserved.