Anti rotation pin - swap around with Canopy mounting location.

[HarryR]

I have seen pictures of some Protos 500's that have the Anti-rotation pin in the slot that normally is used for the Canopy mounting pins.
I guess this allows some more space in the front of the canopy and it makes it easier to pop the canopy over the front of the heli.
The question: does the anti-rotation pin have to be either "glued" in place or screwed in place so it does not move at all or is a little movement needed to make the rotation pin work better?

[dr dremel]

I think what you saw is the canopy mounts in the location where the AR bracket is (instead of screws). The AR bracket stays where it´s supposed to be. It has a tab on the bottom which slots in the upper bearing block, no glue needed. There should be no movement of the AR bracket front/aft except a little bending (it´s CFRP after all). And yes, the relocated canopy mounts provide much needed space for batts.

[ball101]

Originally Posted by HarryR

I have seen pictures of some Protos 500's that have the Anti-rotation pin in the slot that normally is used for the Canopy mounting pins.
I guess this allows some more space in the front of the canopy and it makes it easier to pop the canopy over the front of the heli.
The question: does the anti-rotation pin have to be either "glued" in place or screwed in place so it does not move at all or is a little movement needed to make the rotation pin work better?

Yeah I have done this mod to mine since I have some fat battery packs inside my Protos. Just switched the canopy mounts onto the ARB and it provided a lot more room for my canopy to fit over the batteries. Still tight but not nearly as bad!

[HarryR]

Can you please make a picture and post it?? I have a mod done but the ARPin seems to be too loose and moves forward and backwards too easily. Thanks

[ball101]

Originally Posted by HarryR

Can you please make a picture and post it?? I have a mod done but the ARPin seems to be too loose and moves forward and backwards too easily. Thanks

Unfortunately, My protos is in a million pieces right now so I cant but I have noticed that when I made the mod, my ARB was also able to move back and forth pretty easily... However, it stayed in place during flight and after 50+ flights, I never had any problems : )

[dr dremel]

There you go. Just noticed that the ARB can be rotated back if the screws (or in this case the canopy posts) are not tightened down enough.

[BHChieftain]

I personally could not get the canopy pins tight enough to hold the AR bracket to my comfort level-- it held, but always had me worried.

I have really big hyperion batteries that I was standing on edge on the nose. I flipped them sideways and was able to move the canopy pins back into the orig position with enough room.

Also, a trick from the Finless Bob build videos-- if you put a washer spacer between the landing gear and the frame, you can slide the bottom of the canopy into that slot and gain even more room.

Chief

[HarryR]

Yep, and that is my real concern.. I could just see that pin flip backwards during flight and get released or pulled out of that Anti Rotation pin "slit" and have a serious crash. Now I need to do some more checking . perhaps some glue to prevent the ARPin from moving back too far is the answer.. I will keep you'all posted.

[Teeyo]

I just did this mod and I was able to get the canopy pins tight enough to where the AR bracket doesn't move much at all unless you really force it, even then it doesn't move much. It's tight enough that nothing in flight will budge it IMO.

My problem is, with my glacier 3300 mah pack I still can't get the canopy on fully. I can get one side on but the other side if the canopy won't reach. Next I will try the washer under the skids mod

[HarryR]

Originally Posted by Teeyo

I just did this mod and I was able to get the canopy pins tight enough to where the AR bracket doesn't move much at all unless you really force it, even then it doesn't move much. It's tight enough that nothing in flight will budge it IMO.

My problem is, with my glacier 3300 mah pack I still can't get the canopy on fully. I can get one side on but the other side if the canopy won't reach. Next I will try the washer under the skids mod

I am going to try metal canopy pins that may have some more resistance in the thread, at least that is what I hope. It was not too bad ( one size tighter than the other one) but I feel I want a better "lock" on the AR Pin.

[dr dremel]

Maybe just add a nut between frame and canopy pin? The plastic ones break in a crash, saving frame/canopy from damage.

[HarryR]

Originally Posted by dr dremel

Maybe just add a nut between frame and canopy pin? The plastic ones break in a crash, saving frame/canopy from damage.

Good idea!!

[Mikej]

Another option is to change the Anti-Rotation pin to a longer bolt and add an extra bearing - it won't come out of the ARB then