Futaba Super Candy

[Larry Benson]

hi guys, I have been laying around for about 2 weeks now getting over a total knee replacement and have had time to think(dangerous !) I'll be able to get to my hobby room downstairs soon (all this free time and can't get to the boats, BUMMER! LOL) and I have been thinking of a project . I have a 21" Futaba Super Candy EL boat new in the box. I really like the looks of the boat but in the stock setup it's a dog. I also have a 700BB motor and all the parts to convert it to surface drive and 8-12 cells.
My question is will this hull handle the power of a 700BB and still be controlable? any other suggestions? what class could I run with this boat with that setup?
what is the best way to strengthen the hull and not add a lot of weight? I'm open to any and all suggestions. I gotta have something to do , this sitting around is driving me up the wall LOL.

[Doug Forrester]

Larry
As far as I'm concerned, a 21" mono hull is much too small for a 700 motor and 12 cells. I would definitely suggest that 6/8 cells (direct drive) would be the ticket for this size monohull.

[eddieh]

Hey Larry, I have seen this boat run with 6 cells, I wouldn't call it a dog, I have just ordered two of the great planes 550 size motors (same as a graupner 600) but a few less winds (19 versus 22) it puts out about 165 watts that's 15 more then then a 700 8.4 plus more rpms, all this for 14 bucks,, let me at em, this seems to be a very decent motor, I like the graupner 600, I really do, but this is even cheaper (4 bucks), anyway it wouldn't hurt to try, all the mountings and hardware will fit, try this on 8 to 10 cells, it be a hoot mt 2 cents, cheers eddie
BTW here's the specs
S-600 7.2-8.4 Volt Ferrite Motor from Great Planes.
(former Goldfire Motor 05 (550)
ferrite magnets.
S-600 7.2-8.4 Volt Ferrite Motor
SPECS: Windings: 19 turns of .80mm wire.
timing: + 3 degrees
Resistance: .37 ohms
Max RPM: 19,800
No Load RPM: 19,140 RPM at 7.2V - 2.06 amp
21,960 RPM at 8.4V - 2.19 amp
RPM/Volt: 2,658 RPM/Volt at 7.2 volts
2,614 RPM/Volt at 8.4 volts
Shaft Diameter: 3.17mm (.126")
Free Shaft Length: 10.2mm (.408")
Case Diameter: 37.0mm (1.48") w/flux ring 35.5mm (1.42") w/o ring
Case Length: 56.8mm (2.27")
550 size can
Weight: 215g (7.5 oz)
Bronze bushings
Closed endbell
Epoxied balanced rotor
Flux ring for increased power

Performance specs while turning an 8 x 4 propeller:
6-cell 7.2 volt battery 7-cell 8.4 volt battery
RPM: 10,000-10,500 RPM: 10,800-10,500
Amps: 20 Amps: 22-23
Watts: 140 Watts: 165
Thrust: 17-18 oz Thrust: 19-21 oz
Shaft length: 10.3mm (.408")

[EVADER09]

Larry I hope you can get to your project what ever it is gunna be soon. I wish you the best of luck with your knee. I hope it works out for you so you can get back to building and racing. GET WELL!!

[Larry Benson]

Doug, After looking a little closer I think you are right, a 700BB would be a bit much for this hull, I'll try something different.......thanks


Eddieh, I checked out the Great Planes S-600 and sorta like the idea, I think I'll give it a go, I need to make an order from tower anyway and I have everything else that I will need but the motor........thanks


evader09, thanks for the well wishes, the knee already feels better than before the operation just can't bend it very much yet. But I am able to bend it well enough to get downstairs to the hobby room so I'm starting on my projects tomorrow..........thanks

[eddieh]

Larry, My motors come today, yeehaa, the more I see the wattage and what some very knowledgeable guys put up about rpm per volt, this motor's a steal, that is until everybody finds out about it (remember the aluminum solder!! LOL) anyway great planes also makes a very decent tranny problem is it only comes 3 to 1 or worse, but..... if you take a standard pinion from the car guys, A larger sized one, you can drop this down to a 1 to 1.72 very nice, I have this in a fairly heavy mahogony runabout and on 6 cells it's planing down to the last 2 inches of the hull all ball bearings come included, it has a 4mm output shaft, and my local hobby shop carries them for 16 buckaroos,,,,, another 4 bucks for the pinion my 2 cents. cheers eddie