Shaun Walsh
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Posts posted by Shaun Walsh
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All it means is that male PCSOs will be given black and yellow stripey uniforms, have their tasers taken away and be told to get there ASAP.🤣
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21 minutes ago, Shaun Walsh said:
These are the results for a 3 cell battery with a 9x5 APC-E prop
Battery Load: 9.39 C Voltage: 10.73 V Rated Voltage: 11.10 V Energy: 17.76 Wh Total Capacity: 1600 mAh Used Capacity: 1360 mAh min. Flight Time: 5.4 min Mixed Flight Time: 9.4 min Weight: 138 g 4.9 oz Motor @ Optimum Efficiency Current: 9.87 A Voltage: 10.80 V Revolutions*: 10227 rpm electric Power: 106.7 W mech. Power: 84.0 W Efficiency: 78.8 %
Wattmeter readingsCurrent: 15.02 A Voltage: 10.73 V Power: 161.2 W Motor @ Maximum Current: 15.02 A Voltage: 10.64 V Revolutions*: 9385 rpm electric Power: 159.9 W mech. Power: 122.9 W Efficiency: 76.8 % est. Temperature: 48 °C 118 °F
Thermal Curve3 7 15 23 s 35 40 45 47 °C 94 104 113 117 °F Propeller Static Thrust: 901 g 31.8 oz Revolutions*: 9385 rpm Stall Thrust: - g - oz avail.Thrust @ 0 km/h: 901 g avail.Thrust @ 0 mph: 31.8 oz Pitch Speed: 72 km/h 45 mph Tip Speed: 404 km/h 251 mph specific Thrust: 5.63 g/W 0.2 oz/W Total Drive Drive Weight: 284 g 10 oz Power-Weight: 208 W/kg 94 W/lb Thrust-Weight: 1.13 : 1 Current @ max: 15.02 A P(in) @ max: 166.7 W P(out) @ max: 122.9 W Efficiency @ max: 73.7 % Torque: 0.13 Nm 0.1 lbf.ft Climb Capacity: 2447 m 8028 ft Airplane All-up Weight: 800 g 28.2 oz Wing Load: 49.2 g/dm² 16.1 oz/ft² Cubic Wing Load: 12.2 est. Stall Speed: 33 km/h 20 mph est. Speed (level): 72 km/h 45 mph est. Speed (vertical): 10 km/h 6 mph est. rate of climb: 7.5 m/s ( ~45...50° ) 1478 ft/min
And the results for a 10x6 APC-E prop
Battery Load: 13.31 C Voltage: 10.58 V Rated Voltage: 11.10 V Energy: 17.76 Wh Total Capacity: 1600 mAh Used Capacity: 1360 mAh min. Flight Time: 3.8 min Mixed Flight Time: 7.9 min Weight: 138 g 4.9 oz Motor @ Optimum Efficiency Current: 9.87 A Voltage: 10.80 V Revolutions*: 10227 rpm electric Power: 106.7 W mech. Power: 84.0 W Efficiency: 78.8 %
Wattmeter readingsCurrent: 21.29 A Voltage: 10.58 V Power: 225.2 W Motor @ Maximum Current: 21.29 A Voltage: 10.45 V Revolutions*: 8358 rpm electric Power: 222.6 W mech. Power: 159.0 W Efficiency: 71.4 % est. Temperature: 64 °C 147 °F
Thermal Curve3 7 15 23 s 41 50 59 63 °C 105 122 138 144 °F Propeller Static Thrust: 1176 g 41.5 oz Revolutions*: 8358 rpm Stall Thrust: - g - oz avail.Thrust @ 0 km/h: 1176 g avail.Thrust @ 0 mph: 41.5 oz Pitch Speed: 76 km/h 47 mph Tip Speed: 400 km/h 248 mph specific Thrust: 5.28 g/W 0.19 oz/W Total Drive Drive Weight: 284 g 10 oz Power-Weight: 295 W/kg 134 W/lb Thrust-Weight: 1.47 : 1 Current @ max: 21.29 A P(in) @ max: 236.4 W P(out) @ max: 159.0 W Efficiency @ max: 67.3 % Torque: 0.18 Nm 0.13 lbf.ft Climb Capacity: 2196 m 7205 ft Airplane All-up Weight: 800 g 28.2 oz Wing Load: 49.2 g/dm² 16.1 oz/ft² Cubic Wing Load: 12.2 est. Stall Speed: 33 km/h 20 mph est. Speed (level): 78 km/h 48 mph est. Speed (vertical): 29 km/h 18 mph est. rate of climb: 9.6 m/s ( ~65...70° ) 1880 ft/min And for a 10x7 APC-E prop
Remarks: - The airflow at the propeller blade will stall. Therefore the static thrust and max. current may not be reached. On ground you will measure *Stall Thrust* as maximum.
- 27.0km/h / 16.8mph - above this airspeed stall at the propeller blade will have disappeared completely.
Battery Load: 14.41 C Voltage: 10.54 V Rated Voltage: 11.10 V Energy: 17.76 Wh Total Capacity: 1600 mAh Used Capacity: 1360 mAh min. Flight Time: 3.5 min Mixed Flight Time: 7.8 min Weight: 138 g 4.9 oz Motor @ Optimum Efficiency Current: 9.87 A Voltage: 10.80 V Revolutions*: 10227 rpm electric Power: 106.7 W mech. Power: 84.0 W Efficiency: 78.8 %
Wattmeter readingsCurrent: 23.06 A Voltage: 10.54 V Power: 243.1 W Motor @ Maximum Current: 23.06 A Voltage: 10.40 V Revolutions*: 8069 rpm electric Power: 239.8 W mech. Power: 167.0 W Efficiency: 69.6 % est. Temperature: 70 °C 158 °F
Thermal Curve3 7 15 23 s 43 54 64 68 °C 109 129 148 154 °F Propeller Static Thrust: 1279 g 45.1 oz Revolutions*: 8069 rpm Stall Thrust: 1062 g 37.5 oz avail.Thrust @ 0 km/h: 1062 g avail.Thrust @ 0 mph: 37.5 oz Pitch Speed: 86 km/h 53 mph Tip Speed: 386 km/h 240 mph specific Thrust: 4.43 g/W 0.16 oz/W Total Drive Drive Weight: 284 g 10 oz Power-Weight: 320 W/kg 145 W/lb Thrust-Weight: 1.60 : 1 Current @ max: 23.06 A P(in) @ max: 256.0 W P(out) @ max: 167.0 W Efficiency @ max: 65.2 % Torque: 0.20 Nm 0.15 lbf.ft Climb Capacity: 2188 m 7178 ft Airplane All-up Weight: 800 g 28.2 oz Wing Load: 49.2 g/dm² 16.1 oz/ft² Cubic Wing Load: 12.2 est. Stall Speed: 33 km/h 20 mph est. Speed (level): 84 km/h 52 mph est. Speed (vertical): 36 km/h 22 mph est. rate of climb: 10.3 m/s ( ~85...90° ) 2028 ft/min Just checked and the 10x6 and 10x5 current draw are above the motors max 18A rating.
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Looking at the plans, you are probably going to want to use a much smaller prop if only to improve hand clearance when launching. This would mean using a higher Kv motor, probably between 1700 Kv and 2000 Kv, or running on a 4 cell battery.
On a 4 cell battery, this is what you get with and 8x5 APC-E with that motor
Remarks: Battery Load: 10.63 C Voltage: 14.25 V Rated Voltage: 14.80 V Energy: 23.68 Wh Total Capacity: 1600 mAh Used Capacity: 1360 mAh min. Flight Time: 4.8 min Mixed Flight Time: 9.7 min Weight: 184 g 6.5 oz Motor @ Optimum Efficiency Current: 12.79 A Voltage: 14.31 V Revolutions*: 13587 rpm electric Power: 183.0 W mech. Power: 145.4 W Efficiency: 79.5 %
Wattmeter readingsCurrent: 17.02 A Voltage: 14.25 V Power: 242.5 W Motor @ Maximum Current: 17.02 A Voltage: 14.15 V Revolutions*: 12859 rpm electric Power: 240.7 W mech. Power: 189.3 W Efficiency: 78.7 % est. Temperature: 57 °C 135 °F
Thermal Curve3 7 15 23 s 38 46 53 56 °C 100 114 127 132 °F Propeller Static Thrust: 1139 g 40.2 oz Revolutions*: 12859 rpm Stall Thrust: - g - oz avail.Thrust @ 0 km/h: 1139 g avail.Thrust @ 0 mph: 40.2 oz Pitch Speed: 98 km/h 61 mph Tip Speed: 493 km/h 306 mph specific Thrust: 4.73 g/W 0.17 oz/W Total Drive Drive Weight: 334 g 11.8 oz Power-Weight: 315 W/kg 143 W/lb Thrust-Weight: 1.42 : 1 Current @ max: 17.02 A P(in) @ max: 251.8 W P(out) @ max: 189.3 W Efficiency @ max: 75.2 % Torque: 0.14 Nm 0.1 lbf.ft Climb Capacity: 2186 m 7172 ft Airplane All-up Weight: 800 g 28.2 oz Wing Load: 16.0 g/dm² 5.2 oz/ft² Cubic Wing Load: 2.3 est. Stall Speed: 19 km/h 12 mph est. Speed (level): 65 km/h 40 mph est. Speed (vertical): 27 km/h 17 mph est. rate of climb: 7.6 m/s -
1 hour ago, Fly Boy 3 said:
I would like to fit this motor to my Model Pushycat for this season. I have obtained a Turnigy D2836/8 1100kv. Wondered what prop size ? Thanks
What is the distance between the booms? It will dictate the max prop diameter.
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These are the results for a 3 cell battery with a 9x5 APC-E prop
Battery Load: 9.39 C Voltage: 10.73 V Rated Voltage: 11.10 V Energy: 17.76 Wh Total Capacity: 1600 mAh Used Capacity: 1360 mAh min. Flight Time: 5.4 min Mixed Flight Time: 9.4 min Weight: 138 g 4.9 oz Motor @ Optimum Efficiency Current: 9.87 A Voltage: 10.80 V Revolutions*: 10227 rpm electric Power: 106.7 W mech. Power: 84.0 W Efficiency: 78.8 %
Wattmeter readingsCurrent: 15.02 A Voltage: 10.73 V Power: 161.2 W Motor @ Maximum Current: 15.02 A Voltage: 10.64 V Revolutions*: 9385 rpm electric Power: 159.9 W mech. Power: 122.9 W Efficiency: 76.8 % est. Temperature: 48 °C 118 °F
Thermal Curve3 7 15 23 s 35 40 45 47 °C 94 104 113 117 °F Propeller Static Thrust: 901 g 31.8 oz Revolutions*: 9385 rpm Stall Thrust: - g - oz avail.Thrust @ 0 km/h: 901 g avail.Thrust @ 0 mph: 31.8 oz Pitch Speed: 72 km/h 45 mph Tip Speed: 404 km/h 251 mph specific Thrust: 5.63 g/W 0.2 oz/W Total Drive Drive Weight: 284 g 10 oz Power-Weight: 208 W/kg 94 W/lb Thrust-Weight: 1.13 : 1 Current @ max: 15.02 A P(in) @ max: 166.7 W P(out) @ max: 122.9 W Efficiency @ max: 73.7 % Torque: 0.13 Nm 0.1 lbf.ft Climb Capacity: 2447 m 8028 ft Airplane All-up Weight: 800 g 28.2 oz Wing Load: 49.2 g/dm² 16.1 oz/ft² Cubic Wing Load: 12.2 est. Stall Speed: 33 km/h 20 mph est. Speed (level): 72 km/h 45 mph est. Speed (vertical): 10 km/h 6 mph est. rate of climb: 7.5 m/s ( ~45...50° ) 1478 ft/min
And the results for a 10x6 APC-E prop
Battery Load: 13.31 C Voltage: 10.58 V Rated Voltage: 11.10 V Energy: 17.76 Wh Total Capacity: 1600 mAh Used Capacity: 1360 mAh min. Flight Time: 3.8 min Mixed Flight Time: 7.9 min Weight: 138 g 4.9 oz Motor @ Optimum Efficiency Current: 9.87 A Voltage: 10.80 V Revolutions*: 10227 rpm electric Power: 106.7 W mech. Power: 84.0 W Efficiency: 78.8 %
Wattmeter readingsCurrent: 21.29 A Voltage: 10.58 V Power: 225.2 W Motor @ Maximum Current: 21.29 A Voltage: 10.45 V Revolutions*: 8358 rpm electric Power: 222.6 W mech. Power: 159.0 W Efficiency: 71.4 % est. Temperature: 64 °C 147 °F
Thermal Curve3 7 15 23 s 41 50 59 63 °C 105 122 138 144 °F Propeller Static Thrust: 1176 g 41.5 oz Revolutions*: 8358 rpm Stall Thrust: - g - oz avail.Thrust @ 0 km/h: 1176 g avail.Thrust @ 0 mph: 41.5 oz Pitch Speed: 76 km/h 47 mph Tip Speed: 400 km/h 248 mph specific Thrust: 5.28 g/W 0.19 oz/W Total Drive Drive Weight: 284 g 10 oz Power-Weight: 295 W/kg 134 W/lb Thrust-Weight: 1.47 : 1 Current @ max: 21.29 A P(in) @ max: 236.4 W P(out) @ max: 159.0 W Efficiency @ max: 67.3 % Torque: 0.18 Nm 0.13 lbf.ft Climb Capacity: 2196 m 7205 ft Airplane All-up Weight: 800 g 28.2 oz Wing Load: 49.2 g/dm² 16.1 oz/ft² Cubic Wing Load: 12.2 est. Stall Speed: 33 km/h 20 mph est. Speed (level): 78 km/h 48 mph est. Speed (vertical): 29 km/h 18 mph est. rate of climb: 9.6 m/s ( ~65...70° ) 1880 ft/min And for a 10x7 APC-E prop
Remarks: - The airflow at the propeller blade will stall. Therefore the static thrust and max. current may not be reached. On ground you will measure *Stall Thrust* as maximum.
- 27.0km/h / 16.8mph - above this airspeed stall at the propeller blade will have disappeared completely.
Battery Load: 14.41 C Voltage: 10.54 V Rated Voltage: 11.10 V Energy: 17.76 Wh Total Capacity: 1600 mAh Used Capacity: 1360 mAh min. Flight Time: 3.5 min Mixed Flight Time: 7.8 min Weight: 138 g 4.9 oz Motor @ Optimum Efficiency Current: 9.87 A Voltage: 10.80 V Revolutions*: 10227 rpm electric Power: 106.7 W mech. Power: 84.0 W Efficiency: 78.8 %
Wattmeter readingsCurrent: 23.06 A Voltage: 10.54 V Power: 243.1 W Motor @ Maximum Current: 23.06 A Voltage: 10.40 V Revolutions*: 8069 rpm electric Power: 239.8 W mech. Power: 167.0 W Efficiency: 69.6 % est. Temperature: 70 °C 158 °F
Thermal Curve3 7 15 23 s 43 54 64 68 °C 109 129 148 154 °F Propeller Static Thrust: 1279 g 45.1 oz Revolutions*: 8069 rpm Stall Thrust: 1062 g 37.5 oz avail.Thrust @ 0 km/h: 1062 g avail.Thrust @ 0 mph: 37.5 oz Pitch Speed: 86 km/h 53 mph Tip Speed: 386 km/h 240 mph specific Thrust: 4.43 g/W 0.16 oz/W Total Drive Drive Weight: 284 g 10 oz Power-Weight: 320 W/kg 145 W/lb Thrust-Weight: 1.60 : 1 Current @ max: 23.06 A P(in) @ max: 256.0 W P(out) @ max: 167.0 W Efficiency @ max: 65.2 % Torque: 0.20 Nm 0.15 lbf.ft Climb Capacity: 2188 m 7178 ft Airplane All-up Weight: 800 g 28.2 oz Wing Load: 49.2 g/dm² 16.1 oz/ft² Cubic Wing Load: 12.2 est. Stall Speed: 33 km/h 20 mph est. Speed (level): 84 km/h 52 mph est. Speed (vertical): 36 km/h 22 mph est. rate of climb: 10.3 m/s ( ~85...90° ) 2028 ft/min -
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8 minutes ago, Bill Southwell said:
Don't forget to fit the table lamp into the port engine exhaust, probably won't fly without it.
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Why is it that you always get a puncture in the tyre with the most tread remaining and not the one that's almost bald?
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Have you checked page 21 of the receiver instructions, "aircraft will not respond to throttle but responds to other controls"?
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1 hour ago, GKM4 said:
Totally reset receiver again and all controls work including throttle. Went in to Forward Programming and set up Safe and AS3X again. Safe and AS3X working fine but no throttle. Monitor shows that all channels are working correctly and I have tried to reset the ESC but no bleeps or noises and no response.
I am now assuming that due to the age of this model which is at least 15 years old the ESC is not compatible with the receiver although it works without the modes programmed in to it???
Any ideas?
Sounds like one of the steps in programming AS3X and SAFE is interfering with normal throttle functioning. Having programmed an AR630 I can only say that the programming process is somewhat complicated, took me several tries to get it working. I'd go through the forward programming menu and double check that the throttle function hasn't been set to "inhibit" in any of the options. Unlikely to be the ESC as it just supplies power to the receiver and accepts the receiver output controlling power.
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2 hours ago, extra slim said:
Good news, little late on the forum today as I've been for a job interview at a place that makes car batteries................They asked me if I could start in the morning!!
Is this a current vacancy? Can you work from ohm?
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44 minutes ago, Simon Chaddock said:
JamieM
You do need to be careful with any charger you choose. The Apprentice STOL uses a particular small LiPo battery that must be charged by a smart charger. It only has one lead. The "smart" in the charger automatically takes care of charging the LIPo safely.
A more conventional and bigger LiPo has two set of leads. A main lead that is used to both power the plane and for charging. There is in addition a "balance" lead that has connections to each cell in the battery. For charging both leads are plugged into the charger so it can charge and at the same time monitor how the charge is going in each cell and adjust the individual cell charge so all the cells are brought up to exactly the same full level then charging stops automatically. A LiPo must never be over charged.
On this basis I would recommend you get your Apprentice STOL flying using the as provided charger as it is rather specialised to the application. Nothing wrong with buying more identical batteries to use to get more flying time.
However if and when you want to move onto larger planes the batteries and the charger will be different and more "universal" in their application.
The important thing is to ask for advice from a site like this on your next plane and the charger and batteries it might use. At the same time you will be advised on how applicable it might be for the plane after that!
Actually, I think that he battery can be charged using a standard lipo battery charger but a JST 2.0 PH battery adapter lead will be required. The battery plugs into the adapter lead and the lead has connections that plug into the balance and charge ports on the charger. I use this system on the batteries for my Blade 130X helicopter.
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2 hours ago, john davidson 1 said:
This was on Radio Scotlands Out of Doors program this morning so thought I would put it on.
In Scotland sack is pronounced sek, plural seks
Man went to B and Q to buy bin liners so went to the woman at the help desk and said "i'm lookin fer rubbish seks"
She screamed and pushed the panic button so he got escorted out protesting
Could have been worse, he might have found the bin liners, gone to a till and said "can I pay you for seks?".
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14 minutes ago, Brian Cooper said:
Frequent handstands. Thank god it wasn't front view.
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700 watts for an 8lb model should be fine if not a touch overpowered.
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44 minutes ago, Eric Robson said:
I was going to buy one but it was too much to pay
But you do get fringe benefits.
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2 hours ago, Brian Cooper said:
Presumably you buy a toupee from a locks-smith?
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13 minutes ago, Rocker said:
I Have a DX 6 with a Spektrum lithium rechargeable battery but when I charge it up fully and leave it for a week .When I turn it on even though I have not used it the battery is flat .This does not happen with my DX8 .Is this normal for a DX6 or do I need to replace the lithium battery
It's either a problem with the battery or a parasitic drain on the Tx. Can you swap batteries between the DX6 and DX8 to determine where the problem lies?
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1 hour ago, kevin b said:
Must be difficult to steer.
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You could always see if a Spektrum service centre would replace the outer case.
One thing to think about is that if your current DX9 has an SD card slot it makes it so much easier to set up the models on a new Spektrum Transmitter.
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On 10/02/2024 at 16:24, cymaz said:
Finally got everything finished and ready for paint. I’ve got about 80’ of flap and no issues, is that sufficient?
The "blister" style servo covers look nice, where did you get those from?
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To connect the Tx to the computer you need a USB dongle like this
The dongle is connected to the Tx using a lead with a 3.5mm jack plug, the other end plugs into the trainer socket of the Tx (various types of socket are used by different manufacturers, it may be a 3.5mm jack socket, it may not). If your Tx doesn't have a trainer socket you're out of luck unless you can find a wireless dongle that uses the same communication protocol as the transmitter.
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All praise to Wheelspin models. I ordered a couple of spare props and a prop drive shaft for my Night Vapor at 4:30 PM on Friday, immediate acknowledgement of order, 5:30 PM an email saying order dispatched and parcel received at 1:30 PM Saturday.
Wot 4 Jigsaw
in All Things Model Flying
Posted
https://www.elitemodelsonline.co.uk/Aircraft/Aircraft-Spares/Electric-Aircraft-Spares/Max-Thrust/Max-Thrust-Riot/15676-/MAX-T-RIOT-1-A-Max-Thrust-Riot-Fuselage-With-No-Decals