Robert Foreman
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Everything posted by Robert Foreman
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Ben Buckle/KeilKraft Falcon
Robert Foreman replied to Robert Foreman's topic in Build Blogs and Kit Reviews
Ed, Yes, I found that it climbed excessively. I put some packing under the wing TE, about 1/8 inch, and that sorted it. I left the tail alone because it was simpler to pack the wing. Regards, Robert -
I upgraded to W10 yesterday. My starting point was W7 on one disc partition and XP on another. I had no idea whether or not the upgrade process would cope with this configuration. Fortunately it did, although the first time XP started it failed whilst displaying the XP flash screen. Subsequent attempts were ok. The upgrade process even took care of the OS name in the dual boot screen. I was worried when W10 first started after the upgrade as it was using a lower resolution display adaptor and not the NVIDIA one which was used on W7. However after a subsequent restart W10 switched to the NVIDIA and display is now as before.
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If you look at the front panel of the CD player you might find a small hole that a pin can go in to release the CD. This happened to the CD player on my PC. Robert
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Free Glue Grab Weekend
Robert Foreman replied to David Ashby - Moderator's topic in All Things Model Flying
Yes please. -
" the reasoning behind cycling being inefficient is that when the boiler switches off you have a heat exchanger which is still hot, and as air passes over it, it carries some of this heat out through the flue. " I'm still having trouble being convinced that cycling is not good. In the statement above, the water circulating pump will be still be running and hence absorbing the heat exchanger heat. Also, how is the efficiency measured on condensing and non-condensing boilers ? My non-condensing boiler is most likely worse at converting gas energy into water heat than a condensing boiler since heat is lost up the flue and the casing, but my boiler is in a room with no radiator and if I was to replace the boiler with a condensing boiler I would need to install a radiator in the room. The point is that some of the heat energy lost by the boiler is actually useful.
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"If you still run a non condensing boiler use a high boiler thermostat setting to minimise cycling and get the highest efficiency." i12flly, Can you explain why cycling lowers efficiency? Is not the heat exchanger most efficient when the return water temperature is lowest ?
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Yes please
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My Panther is at last ready for its maiden. I've decided to leave the cowl, canopy, and spats till later just in case it does not fly. Mine weighs 4lbs and it's got a Super Tigre S29 2-stroke up front. I made the rotor head as per Rich's diagram but used the Mini-Titan helicopter main shaft that I mentioned in my post months ago. The under-carriage and tail are also from the scrap box. It balances with a nose down attitude when held by the head. Tank, receiver battery, and Rx are all in the front compartment. The rudder servo is at the back. All of the red and silver is Solarlac over Poly-C over tissue. I put the Panther outside in the wind today and the rotor blades started to turn .
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Yes please.
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throttle to elevator mixing
Robert Foreman replied to john melia 1's topic in All Things Model Flying
John, When I programmed elevator to throttle mixing to solve the issue you have I met an unexpected side effect. If you open the throttle quickly the air speed takes time to build up and generate lift but the elevator reacts immediately and you find the plane dives unexpectedly ! Robert -
Derek, With the TX you've got these are 3 options: 1) Use two programmable digital servos connected via a 'Y' lead and program one servo to be reversed 2) Use two analogue servos with one connected via a servo reversor 3) Use two analogue servos connected via a 'Y' lead and alter the wiring inside the servo to reverse it. I've tried the mixing option and whilst it works you'll find that the elevator trim only moves one of the servos. Regards, Robert
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Ben Buckle/KeilKraft Falcon
Robert Foreman replied to Robert Foreman's topic in Build Blogs and Kit Reviews
Hi Robin, I used Tamiya 6mm masking tape brought from my local model shop. The tape follows gentle curves. You just press it down and paint. -
HomeBase also sell pine strips 6mm x 18mm x 900mm. Just over £1 each.
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Ian, Thanks for the throttle cut suggestion, it works a treat Robert
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With all the current interest in Auto-Gyros the Phoenix flight simulator actually has an auto-gyro simulation. The model is found under Others/Auto-gyro and the name is Cierva C-30. I've had to setup a new transmitter profile in the simulator just for the auto-gyro. For my Futaba FF6 it is: Throttle - Invert on Collective Pitch - Channel 3, Invert on Cyclic Pitch - Channel 2 Cyclic Roll - Channel 1 Tail Rotor - Channel 4
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Andy, Since you've made a 2 stroke version and so that the COG will not be to far out on mine, can you give some details on where you've positioned the gear inside i.e. battery, throttle servo, rudder servo etc. Robert.
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Hi Andy, Thanks. I've now drilled F1 and offset the holes by 3 - 4 mm to give me a centered spinner. I've used a SLEC mount and the top holes are to close for comfort to the top of F1, I'll need to modify the tank hatch at its front to clear the 'T' nuts. I might just shorten the hatch providing I can get the tank in and out. Robert
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Rich, Am I right in saying that no side thrust needs to be built in ? I'm about to drill F1/F2 for the motor mount, and putting in a Super Tigre 30 two stroke. I might mount it side winder fashion to put the exhaust underneath. Robert
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There's been talk on this thread about bending the top decking around bottles and similar. I did it another way. I laminated two layers of thinner wood, and each layer bends easily. The first layer is stuck as normal, and when dry the second layer is attached with an Impact adhesive. Here's my attempt at the mast decking. Only problem I had was that the wood was not a uniform thickness even though the pieces were cut from the same sheet.
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Ben Buckle/KeilKraft Falcon
Robert Foreman replied to Robert Foreman's topic in Build Blogs and Kit Reviews
Mike, I did 3 landings and all were very bouncy, they did not look professional at all. Robert
