1/12th scale Unlimited Hydroplane - Miss Budweiser
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NDQ Speed Storm ready to run, bought from ebay for £27, the plan is to race it in the SWAMBC F4 championship. Hull is a thick ABS two part construction, stripped of all original fittings it weighs a whopping 3.5 lbs. Beam = 14.4in Length = 29in Weight = 7.5 lbs all up MOTOR = Graupner Speed 700BB Turbo 8.4V PROPELLER = Graupner 2317.48/51 or Octura X447, on 0.13in flexi drive with 3/16in drive dog SPEED CONTROL = Overlander 50A waterproof ESC with additional water cooling, BEC not used RUDDER CONTROL = Acoms AS 16 standard servo TRANSMITTER = Acoms Techniplus 2 channel 27MHz or Futaba 6EXA 40MHz - stops clitching problem RECEIVER = Acoms AR-2/27 2channel 27MHz with BEC or Futaba F136 without BEC POWER SUPPLY = 12 GP3300 NiMH sub C, in two 6 packs
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Running as bought with twin 280's and 6 cell 7.2V 1800mAH NiCD pack.
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Very slow and unable to get near the plane, steering by switching off one motor.
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Internal layout, all electronics in neat water proof box.
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Internal layout hull bottom.
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Internal layout hull top.
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New transom hardware, large plate from 1in alluminium angle, bolted through from bottom into a captive 1/8 in tapped ally plate. Strut (octura) is held in more 1in angle, rudder is from a Sintra 700. Note cooling water pickups using old propshaft exit points.
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Motor mount from 1/8in alluminium, simply bolted through hull bottom, some tearing occured during bending, but it has plenty of strength left.
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Motor fitted, note Octura flex hex coupler to flexi drive.
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Internal layout before reattaching the hull top. Boat run with two 6 cell GP3300 packs in the cockpit area, struggled onto the plane with 2317.45 prop, better with X447, but suffering from a radio glitch.... more to do.
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Alternative internal layout, battery packs to each side of the motor with ESC in cockpit, G of C now further back. Now using a receiver battery pack to try and avoid previous glithes, reveiver wrapped in balloon then foil, before duct tape to give velcro something solid to grip.
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Octura X447 prop fitted, lower than previous test, after looking at images of other unlimiteds.
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Ready for another test.
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Looks fast...
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Getting there...
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Getting there...
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Getting there...
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Getting there...
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Getting there...
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Getting there...
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Getting there...
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Round one of the SWAMBC fast electric championship 2006 at Exeter.
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Round one of the SWAMBC fast electric championship 2006 at Exeter.
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Round one of the SWAMBC fast electric championship 2006 at Exeter.
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Round one of the SWAMBC fast electric championship 2006 at Exeter.
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Test run on local pond... going quite well.
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Test run on local pond... going quite well.
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Test run on local pond... going quite well.
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Test run on local pond... going quite well.
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Round two of the SWAMBC fast electric championship 2006 at Warminster. Very slow and uncontrollable - retired after second collision with another boat !
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Round two of the SWAMBC fast electric championship 2006 at Warminster. Very slow and uncontrollable - retired after second collision with another boat !
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Round two of the SWAMBC fast electric championship 2006 at Warminster. Very slow and uncontrollable - retired after second collision with another boat !
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