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I tested the 1/16th scale Hydroplane today. The results were actually better than I had hoped for.
Here are the two setups I tested on the same boat.
The boat is a Gary Finlay designed shovelnose just under 23.5 inches long
Ammo 28-45-3600
Straight shaft with a dog bone type u joint (u joint wont be used in future boats probably a wiredrive or flex shaft)
Octura X 431r aluminum cleaned up and sharpened only
Hacker Navy 70 ESC
Trinity Speed Gems 12 turn car motor
Straight shaft with a dog bone type u joint (u joint wont be used in future boats probably a wiredrive or flex shaft)
RC-Hydros 60 amp 6-12 cell controller
Octura X 431r aluminum cleaned up and sharpened only
Batteries tested were
PolyRC 20 2S 2500 mah lipo's ( 1 pack)
GP 3300 6 cell pack (not a good comparison would be way better comparison using IB or EP 4200's
I started with the brushless setup and the 6 cell sub c's. It would get right up on a plane and prop walk with speeds probably between 30 and 35 just what I was going after and temps were not above 90 degrees after 10 to 12 laps in the small pond.
Same setup but with the PolyRC 2s 20C 2500 mah battery yielded similar temperatures after 8 to 10 laps and speeds that were easily between 35 and 40 and looked and ran great.
I didn't try the sub c's with the trinity 12 turn but the lipo's with the 12 turn was noticeably faster by another 3 to 5 mph and temps about 125 but I am sure I could bring those down by changing out the driveline for a wiredrive and that would drop the temps and get rid of the u joint.
I could see being able to run two complete heats without recharging the poly rc's as after one run of 10 laps the voltage was still 7.4 volts. The battery temps with the brushless Ammo were 85 degrees and 105 with the trinity brushed motor.
Jim Clark
Here are the two setups I tested on the same boat.
The boat is a Gary Finlay designed shovelnose just under 23.5 inches long
Ammo 28-45-3600
Straight shaft with a dog bone type u joint (u joint wont be used in future boats probably a wiredrive or flex shaft)
Octura X 431r aluminum cleaned up and sharpened only
Hacker Navy 70 ESC
Trinity Speed Gems 12 turn car motor
Straight shaft with a dog bone type u joint (u joint wont be used in future boats probably a wiredrive or flex shaft)
RC-Hydros 60 amp 6-12 cell controller
Octura X 431r aluminum cleaned up and sharpened only
Batteries tested were
PolyRC 20 2S 2500 mah lipo's ( 1 pack)
GP 3300 6 cell pack (not a good comparison would be way better comparison using IB or EP 4200's
I started with the brushless setup and the 6 cell sub c's. It would get right up on a plane and prop walk with speeds probably between 30 and 35 just what I was going after and temps were not above 90 degrees after 10 to 12 laps in the small pond.
Same setup but with the PolyRC 2s 20C 2500 mah battery yielded similar temperatures after 8 to 10 laps and speeds that were easily between 35 and 40 and looked and ran great.
I didn't try the sub c's with the trinity 12 turn but the lipo's with the 12 turn was noticeably faster by another 3 to 5 mph and temps about 125 but I am sure I could bring those down by changing out the driveline for a wiredrive and that would drop the temps and get rid of the u joint.
I could see being able to run two complete heats without recharging the poly rc's as after one run of 10 laps the voltage was still 7.4 volts. The battery temps with the brushless Ammo were 85 degrees and 105 with the trinity brushed motor.
Jim Clark
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