Official Freewing B-2 Spirit Bomber 86" Twin 70mm EDF Jet

[GliderGuy]

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

[F106DeltaDart]

10:4 Based on this observation then the single wheel mains are well advised...will follow through with the modifications

TwistedGrin

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.

[mshagg]

If you do the mod right it's fairly trivial to swap between lower struts with a single wheel and the standard lowers with the 4 wheel trucks.

[xviper]

10:4 Based on this observation then the single wheel mains are well advised...will follow through with the modifications

TwistedGrin

You 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.

[TwistedGrin]

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.

10:4 Based on this observation then the single wheel mains are well advised...will follow through with the modifications

TwistedGrin

[xviper]

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.

[Mud Duck]

I have yet to maiden as the weather has not provided opportunity for me yet to test it out.

TwistedGrin

You are not alone, I’ll likely maiden off of grass as well and dang the weather hasn’t cooperated at all for a maiden. Maybe Saturday; the forecast is looking promising. 🤞

[TwistedGrin]

I drilled out two 55mm wheels for the nose gear....will leave the mains stock for now....our grass field is short nap manicured cut. Hoping that higher nose angle and a little aft battery placement will work.....I have yet to maiden as the weather has not provided opportunity for me yet to test it out.

TwistedGrin

[Bill b]

I will thanks! Ya I got my tax check today looked and they was still out of stock,so paid a bill then soon as I hit send I get email saying there back in stock soooo 😂 I got another bill now!!

[Icarus the 2nd]

How's this on grass?? All I have access to is grass field and all planes I tried flying with front gear all rip out anyone have same problems??

Bill, plz watch my 2 grass vids, the first one has all info for some easy mods you might consider.

[Evan D]

Quite a few have said it won't get off the ground stock. There are a few that say they have flown off grass. Some have reported that modifying the mains to a larger single wheel and a larger nose wheel helps and increasing the AOA helps.

Do a search on "grass" here and the RCG thread.

How's this on grass?? All I have access to is grass field and all planes I tried flying with front gear all rip out anyone have same problems??

[Bill b]

How's this on grass?? All I have access to is grass field and all planes I tried flying with front gear all rip out anyone have same problems??

[Marco Polo]

B2's are back in stock!

https://www.motionrc.com/products/freewing-b-2-spirit-bomber-twin-70mm-edf-jet-pnp-fj31711p

[avanti127]

Joe does some awesome work!!!

Thanks Evan, I had a good teacher!

[Evan D]

Joe does some awesome work!!!

[avanti127]

I would really love to see a photo, especially of how you tipped the wires and mounted the PED’s. PM it to me if you prefer. No matter what, great job!

I was thinking of using 5mm bulbs on the forward part and two 8mm bulbs on the part that lights the fuselage. 🤷🏻♂️ Biggest concern is mounting them in a way that still looks good when not lit up. 🙂

5 & 8mm are to large and not necessary. The 3mm LED's have a lot of light as you can see.

I laid out my locations per the real plane and mark and drilled them from the outside in. Once I had the wiring completed I inserted them from the inside to the outside. The top of the bulb is just slightly above the surface and you can barely notice it and are really nicely hidden. From 4ft away you don't even see them until you flip the switch.

[Mud Duck]

There are six lights on the B2 for refueling. I used six 3mm 3.2V LED in series…I can supply a wiring diagram if needed.

I would really love to see a photo, especially of how you tipped the wires and mounted the PED’s. PM it to me if you prefer. No matter what, great job!

I was thinking of using 5mm bulbs on the forward part and two 8mm bulbs on the part that lights the fuselage. 🤷🏻♂️ Biggest concern is mounting them in a way that still looks good when not lit up. 🙂

[avanti127]

Love it! Looks awesome! Would be very interested in seeing how you did it. 👍🏆❤️

There are six lights on the B2 for refueling. I used six 3mm 3.2V LED in series, connected the power to a RC switch from 22.2 6S balance lead to drive them. I can supply a wiring diagram if needed.

[Mud Duck]

In flight refueling lights. The real one and mine.

Finally completed the mods I wanted to do so ready for test flying first nice non-wind day.

Top lights are controlled via a separate channel so they can be turned on and off at will.

Love it! Looks awesome! Would be very interested in seeing how you did it. 👍🏆❤️

[wstimax]

Well i guess you were on the other end of the call to? Lets don't make this nasty I'm not.. Where all in the same sport and loving Rc.. I shared my experience how i was delt with on 2 different occasions that's it. I do apologize if i have offended anyone and in the future i will keep my dealings with MR to myself. Happy flying guys..