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Special
Notes
This old fashioned roundnose hydro is built only from balsa
and CA glue. It is an self construction. The basic hull was complete
in two days becouse it is very simple construction. It was painted
only with nitro paint. First it was powered with SPEED400 6V and
Graupner 31K prop. The speed was very impresive and boat get up
quickly (1,5m). Next I tried with LRP 400S (that motor spins 35.000
rpm at 8,4V, it has big colector-500 and is 50g havier). With
31K prop cut down to 26mm boat fly very quick (like brushed power
hydro1). Drive time with 8*Sanyo Gold was 8 min. Drive shaft is
flex but the angle is 7 degrees which lift the transom and push
nose down. Thanks to Miha Holc for photos and movie.
Gregor Vida from Slovenia
**UPDATE - Now I can tell speed for
my roundnose- it is called 50+km/h. We check it on straight line(100m).
That speed was reached with LRP Super400S motor, 8xGold Sanyo
and Octura X427. Racing time was 7,5 min. Next time I will powerd
it with 12 cells (Gold or 500AR). Calculated speed will be around
74km/h.
Gregor Vida from Slovenia
**UPDATE 9/10/2002 - Hello Trent!
Here is plan for roundnose. I draw it in paint brush. Better than
nothing. I tried my boat on 12 cells (500AR). It did not run well
because prop had to much lift (37000rpm) and CG was to close to
sponson. It goes a little faster but it was bouncing toooooo much.
PS: If anybody will build that boat, try flood chamber in right
sponson.
FREE
Plans!
Best regards Gregor Vida from Slovenia
**UPDATE 10/15/2002 - Hello! Here
are some fotos from last race in Cerknica. Green boat is rigger
made by Peter Klancar which was fly on water.
Best regards Gregor
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