Official Freewing JAS 39 Gripen 80mm EDF Jet

[Tipstalled10]

Found the hidden hardpoints. Ordering new gear doors.

[kallend]

Can someone tell me what I need to order. My gear door popped off, the plastic piece that holds the nub from the gear door appears to be missing. I have looked at the spare parts but just can not figure it out.

I don't see it in any of the "Plastic parts" sets. Would be very easy to make with a 3D printer. Or make one out of thin ply or ABS sheet and glue it in.

[kallend]

Found the hidden hardpoints. Ordering new gear doors.

Where did you find them?

[Tipstalled10]

Where did you find them?

They are located deep in the recess of where it popped out. there is a plastic piece with a hole for the nub. Took me using a dental pick to find it ! The nubs I created with toothpicks were actually too long, once I shortened them and knew where they went they popped right in. Gear doors fixed. Did not cancel the order for the gear doors, old adage, if you have the spare parts on hand you'll never need them. It's the ones you don't have that you need!

[kallend]

They are located deep in the recess of where it popped out. there is a plastic piece with a hole for the nub. Took me using a dental pick to find it ! The nubs I created with toothpicks were actually too long, once I shortened them and knew where they went they popped right in. Gear doors fixed. Did not cancel the order for the gear doors, old adage, if you have the spare parts on hand you'll never need them. It's the ones you don't have that you need!

Oh, OK. I thought you meant you'd found them for sale on the Gripen spare parts list somewhere.

[Gizmo6023]

Just started on my Grippen and discovered one of the nose wheel tires is out of round, checked the site for spare parts and the only nose wheels are part of a nose gear set, no separate wheels.
Does anyone know of a suitable replacement for the stock nose wheel assemblies?

[Evan D]

You have a warranty, have Motion send you a replacement, whether a wheel or assembly.

[kallend]

You have a warranty, have Motion send you a replacement, whether a wheel or assembly.

Both the kits I bought this year came with big yellow notices saying the warranty is only good for 30 days. So it's best not to dilly-dally in checking everything.

[Gizmo6023]

You have a warranty, have Motion send you a replacement, whether a wheel or assembly.

Warranty expired 23 days ago while I was out of state for work so I am now looking for a suitable replacement to purchase.

[Gizmo6023]

What is the trick to removing a canard servo? Seems the servo lead is stuck, likely got glued to something.

[muzamilabbasi]

I just flew the Grippen, I had a 6s 6000mah pack, had a hard time taking off and felt loss of power even on full throttle. Now this model is running 2100kv motor, I also noticed the wing was rocking and noticed that when you open gear door it flies better. Has anyone. experienced anything similar?

Thanks

[kallend]

I just flew the Grippen, I had a 6s 6000mah pack, had a hard time taking off and felt loss of power even on full throttle. Now this model is running 2100kv motor, I also noticed the wing was rocking and noticed that when you open gear door it flies better. Has anyone. experienced anything similar?

Thanks

It would help if you told us your setup (receiver, gyro, etc.)

[muzamilabbasi]

Hi I flew with jeti assist rx, 6000 mah hrb 60c 6s pack

[Reptielenfreak]

Rocking is mainly caused by to high of a gyro rates. A delta winged jet is sensetive to gyro corrections making is wabble

[Evan D]

2100kV is a 70mm EDF motor... There is no way to get a good balance with a 6000mAh battery. Even balanced by the marks under the wing the Gripen flies very nose heavy. Read about how all of us, at least most of us are balancing ours.

A lot of delta's rock. Especially if it's windy for some reason. Yes, high gains cause oscillations.

[Evan D]

A lot of delta's rock. Especially if it's windy for some reason. Yes, high gains cause oscillations.

[kallend]

A lot of delta's rock. Especially if it's windy for some reason. Yes, high gains cause oscillations.

Oscillations due to gain being too high are usually very fast. "Rocking" due to delta aerodynamics are generally much slower. It's pretty easy to to tell the difference. I found the Gripen to be particularly susceptible to rocking. I don't remember how I cured it since it was 3 years ago, but I think a HobbyEagle gyro with fairly high yaw gains did the trick.

[Evan D]

Exactly my point, two different things.

[muzamilabbasi]

Thanks guys, will try out a 4000mah battery next. Also I didn't had any gyro turned on the day wasn't that windy. Will retry it thank you

[muzamilabbasi]

2100kV is a 70mm EDF motor... There is no way to get a good balance with a 6000mAh battery. Even balanced by the marks under the wing the Gripen flies very nose heavy. Read about how all of us, at least most of us are balancing ours.

A lot of delta's rock. Especially if it's windy for some reason. Yes, high gains cause oscillations.

Sorry for the incorrect info, it came with upgraded 3658-2150Kv