Boom Supports and Boom

[Pinecone]

I figured I would start a new thread. But basically I had a tip over and destroyed the weak boom supports, so have started a quest for better ones.

For reference, the stock bom supports are 395mm hole to hole.

I ordered a set of Trex 600 supports. They are much longer. They have a roll pin that has to be knocked out, but after removing the pin, the CF rod doesn't come out. I didn't have to play with it.

I contacted Quick UK for info about their Raptor boom supports. Their supports come disassembled, 2 rods and 4 ends. So you can cut the rods and make them right for the Hurry. The R30 setup has 430mm rods (R50 are 480mm). I am planning on ordering a set to try out. Although I am still talking to them other heli boom supports that might work.

As for the boom, the Hurry uses a 21mm OD boom. The standard boom is 630mm long and the short boom is 570mm. The Hirobo Shuttle and Sceadu alse use 21mm booms.

Quick UK has boom servo mounts for the Hirobo helis that should fit. Also a CNC boom clamp.

I may also order a Quick UK Hirobo boom, as I am not happy with how the stock boom snapped right at the boom clamp. I did also look for some 21mm OD CF tube to make a CF boom. I found one source in the short look, but $66 for a 60 inch piece, which would only make 2 booms.

[bstock]

Damn Terry... you are on it!! :-)

Noticed you started posting Early this morning... getting tired yet? ;-)

Looking forward to more info on this... Thanks!!

[Pinecone]

I catch and early train, and sleep most of the way to work. :)

[Larren]

Hi Terry,

I did also noticed that the boom brace's diameter is small and soft. They bend easily. I have reinforced it with a linkage rod from my touring car (AE nitro TC3) and it works with some mode. Try it.

Now they are a lot stiffer.

Larren.

[Pinecone]

I saw that, but would prefer to move to CF rods.

[Pinecone]

I picked up a set of Raptor 30 boom supports to play with. These are the stock TT ones. The package comes with two CF rods and 4 end pieces.

But I won't be able to mess with them until at least Mon and maybe not for a couple of week. :(

[Hurriken]

Keep us posted on the TT 30 supports. I been fortunate not to bend mine yet. Had a weird tail vibration show up on mine a couple of weeks ago after replacing a set of CF blades, so in tracking down the issue spooled mine up without the blades. I was shocked to see that the boom support tubes started vibrating at about 50% throttle, these darn things were moving 1/2" side to side I was amazed. think I will switch to CF if the TT parts work for you.

[Pinecone]

OK, I got around to playing with the Trex 600 and Raptor 30 boom supports.

The stock supports are 6mm OD aluminum with 3mm holes in the ends.

The Raptor supports are 7mm OD CF tube with 3mm holes. But the ends look massive and oversize for the Hurricane.

The Trex 600 supports are 5mm OD CF tube with 3mm holes. Ends are smaller looking.

The Raptor are easier to modify since the ends are separate. So you would cut the CF tube to length, attach ends and mount. I didn't do this, so I could sell them NIP. They just look too big.

The Trex 600 ends are already installed. They are pinned and glued. You need to knock the pin out of one end fitting. I used a small punch. To remove the glue, I heated the end fitting with a heat gun and would give it a twist (with pliers) every so often until it was loose and came off. On the second one, I heated it too much and softened the epoxy in the CF tube. No big deal.

BTW the end of the Align rod looks like it is a solid rod, but when cut to length, it is a tube.

To match the stock rods, cut the tube 390mm from the very end of the fitting you did not remove. If you are running the short boom, you might want to shorten the supports.

Test fit the ends, I had to file one tube a bit to get the end to slide on easily. I attached the end fitting with medium CA. Make SURE that you get the holes parallel.

If you wanted, you could drill the tube, using the holes in the fitting and put the pin back in. I didn't bother.

Install and you have a much more sturdy boom support.