Originally posted by TwistedGrin
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Official Freewing B-2 Spirit Bomber 86" Twin 70mm EDF Jet
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The difficulty taking off from grass may not be resolved simply be putting bigger tires on the front. Yesterday, when I flew my B-2, I accidentally landed on the grass just beside the runway. It was a perfect mains down first scenario. What really shocked me was just how much the grass grabbed those main "trucks". As soon as they touched down, it was throwing out an anchor. Driving it out of the grass took tremendous thrust and effort. Overcoming that huge drag on the mains is what's going to limit the rolling speed of this plane.
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Originally posted by xviper View PostThe difficulty taking off from grass may not be resolved simply be putting bigger tires on the front. Yesterday, when I flew my B-2, I accidentally landed on the grass just beside the runway. It was a perfect mains down first scenario. What really shocked me was just how much the grass grabbed those main "trucks". As soon as they touched down, it was throwing out an anchor. Driving it out of the grass took tremendous thrust and effort. Overcoming that huge drag on the mains is what's going to limit the rolling speed of this plane.
TwistedGrin
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Originally posted by TwistedGrin View Post
10:4 Based on this observation then the single wheel mains are well advised...will follow through with the modifications
TwistedGrin
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Originally posted by TwistedGrin View Post
10:4 Based on this observation then the single wheel mains are well advised...will follow through with the modifications
TwistedGrin
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Curious about how the nose gear support area is holding up on grass ops. After repairing my nose gear “rip-out” caused by trying a different landing technique (never again)….there are some potentially weak areas in the front end that could be problematic on grass. AND…maybe not.
Pretty sure will all the support area re-enforcing I did, the only thing that’ll break now is the servo and/or strut pins.
-GG
By the way, both times I have messed up a landing that placed stress on the nose gear…the servo sustained damage. Good to have some spare servos for this on hand. Reference post 953 below
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Originally posted by F106DeltaDart View Post
I'd give it a shot first. Considering I got my 70mm F-104 to takeoff from our grass, I'd say there is a good chance it may be ok. I only plan on flying mine from the paved runway at Thunderbird due to all my gear mods though.
TwistedGrin
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Originally posted by xviper View PostYou can always try it first. Your grass may well be far more manicured than the stuff beside my runway. However, unless it's close to a golf green (before mowing), it may not be manicured enough.
I'll try to get a video of the B2 taking or attempting to take off from our grass field.....as soon as I get the opportunity
TwistedGrin
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Successful grass ops are more about the ground underneath the grass than the grass itself. One guy flew off grass no problem in Georgia, but the ground underneath is hard packed red clay. Down here in Florida, even though our grass is bermuda cut short, it has soft sandy ground underneath. I couldn't get enough speed to rotate.Pat
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Originally posted by GliderGuy View PostCurious about how the nose gear support area is holding up on grass ops. After repairing my nose gear “rip-out” caused by trying a different landing technique (never again)….there are some potentially weak areas in the front end that could be problematic on grass. AND…maybe not.
Pretty sure will all the support area re-enforcing I did, the only thing that’ll break now is the servo and/or strut pins.
-GG
By the way, both times I have messed up a landing that placed stress on the nose gear…the servo sustained damage. Good to have some spare servos for this on hand.
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For your files…..
Response from MRC Support / Retract servos bare
SKU: ET8402 Freewing Electronic Nose Retract for 5.1mm Diameter Shafts - Type D (with strut pin included) X 1 required
SKU: E840 Freewing Electronic Main Retract for 5.1mm Diameter Shafts - Type B (without strut pin) X 2 required
-GG
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Originally posted by crxmanpat View PostSuccessful grass ops are more about the ground underneath the grass than the grass itself. One guy flew off grass no problem in Georgia, but the ground underneath is hard packed red clay. Down here in Florida, even though our grass is bermuda cut short, it has soft sandy ground underneath. I couldn't get enough speed to rotate.
TwistedGrin
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Originally posted by MeyerVW View PostWould it help to take off grass, if you started on a piece of card board first. Undo a box a lay it down. Get the aircraft rolling first then onto the grass?
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Replaced my broken servo arm on the port clam shell and hooked everything back up but I'm still off. How much deflection should there be when moving the RIGHT stick left and right (ailerons)? I won't dare maiden until I have these clams where they need to be on both sides. Thanks for any assistance!My YouTube RC videos:
https://www.youtube.com/@toddbreda
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Originally posted by Aros View PostReplaced my broken servo arm on the port clam shell and hooked everything back up but I'm still off. How much deflection should there be when moving the RIGHT stick left and right (ailerons)? I won't dare maiden until I have these clams where they need to be on both sides. Thanks for any assistance!
I started with about 12mm on the inners based on my friends maiden. It doesn't matter what the outers are if you follow Air Marshalls way. Those will be just what they need to be. I had to DOWN trim ELE several clicks, ending up with what the book says (~8mm and 4mm).
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