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Model Boats Website
Followed WarminsterM 12 years ago
United Kingdom
Recent Posts
📝 crash tender
12 years ago by 🇬🇧 Seasick John (
Able Seaman)
Able Seaman)✧ 2 Views · 0 Likes
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Thanks Dave & Gregg,
Feels like I'm now going forward with this project. Will consider both motors Graupner 600/700 & "550" motor defiantly a bigger ESC.
Will let you know progress. thanks again John
Feels like I'm now going forward with this project. Will consider both motors Graupner 600/700 & "550" motor defiantly a bigger ESC.
Will let you know progress. thanks again John
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📝 crash tender
12 years ago by 🇬🇧 Seasick John ( Able Seaman)
Able Seaman)✧ 2 Views · 0 Likes
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A bit more information:
Battery connected in parallel
Prop - Brass 3 bladed aprox dia 35/37mm
Motor - Graupner Speed 500 E (Nr.7306)
Nominal 7.2volts
Operating voltage range 3.6 ... 8.4 V
No-load speed 22500 min-1
Idle current drain approx 2.5 A
Current drain at max. efficiency 17A
Blocking current drain approx 85 A
Max. efficiency approx 70 %
Prop shaft nicely aligned & runs freely (No binding)
Planning to use water pump on a separate battery.
Thanks for info, looks like the motor I'm using might not be up to spec??
Battery connected in parallel
Prop - Brass 3 bladed aprox dia 35/37mm
Motor - Graupner Speed 500 E (Nr.7306)
Nominal 7.2volts
Operating voltage range 3.6 ... 8.4 V
No-load speed 22500 min-1
Idle current drain approx 2.5 A
Current drain at max. efficiency 17A
Blocking current drain approx 85 A
Max. efficiency approx 70 %
Prop shaft nicely aligned & runs freely (No binding)
Planning to use water pump on a separate battery.
Thanks for info, looks like the motor I'm using might not be up to spec??
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📝 crash tender
12 years ago by 🇬🇧 Seasick John ( Able Seaman)
Able Seaman)✧ 2 Views · 0 Likes
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My up date on refurbishment:
Having read above, I now relies my motor / ESC set up is totally crap and after test on the local pond, found out the hard way (Continuously popping 15/20 amp fuses)
My set up:
My Transmitter / Rec 2.4 GHz Planet
Motor - Graupner Speed 500 E
ESC - Montroniks 20amp
Batteries - NI-MH 7.2 3700mAh (x2)
Also note fitting a 6v/12v water pump for working fire 'squirtey' hydrants.
So which forward,
Go brushless (Totally new to me!!) or more conventional set up replace ESC & motor to more suitable set up?
Was thinking of trying a 50 amp ESC with my existing set up...?
Any advice welcome?
Having read above, I now relies my motor / ESC set up is totally crap and after test on the local pond, found out the hard way (Continuously popping 15/20 amp fuses)
My set up:
My Transmitter / Rec 2.4 GHz Planet
Motor - Graupner Speed 500 E
ESC - Montroniks 20amp
Batteries - NI-MH 7.2 3700mAh (x2)
Also note fitting a 6v/12v water pump for working fire 'squirtey' hydrants.
So which forward,
Go brushless (Totally new to me!!) or more conventional set up replace ESC & motor to more suitable set up?
Was thinking of trying a 50 amp ESC with my existing set up...?
Any advice welcome?
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📝 Roker Park Model Boat Club
12 years ago by 🇬🇧 Seasick John ( Able Seaman)
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📝 crash tender
12 years ago by 🇬🇧 Seasick John ( Able Seaman)
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Brian,
Currently doing a similar project as your self.
Gifted a very old crash tender first built in 1956...
As can be seen in very poor state with all fittings missing. Boat size is 34" (1/16 scale), so will be looking for a full set of fitting in the near future.
Started stripping down boat, plus waiting for some plans from e-bay.
Will keep posting progress like your self, hope we can help each other as we progress.
Question: what size is you boat?
Currently doing a similar project as your self.
Gifted a very old crash tender first built in 1956...
As can be seen in very poor state with all fittings missing. Boat size is 34" (1/16 scale), so will be looking for a full set of fitting in the near future.
Started stripping down boat, plus waiting for some plans from e-bay.
Will keep posting progress like your self, hope we can help each other as we progress.
Question: what size is you boat?
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