Trex: Likely Parts To Break In A Crash

[kelvar]

Hi,

Can experts here give me some idea of the likely parts that would need replacement in the event of a crash during hover or FFF? What would the typical cost range be like for a single crash?

Thanks in advance.

[skyblueblue]

I'm no expert but think it depends how bad u crash it

Normally, the blades and flybar goes first if it hits the ground
Maybe Boom Bend due to boom strike
Possible Gear Strip if unable to power cut if it lands sideway
Maybe servo Gear strip also if ccpm
Then Frame crack or break due to hard impact
Rarely total destruction due to Lipo fire

Get a training skid for practicing hovering

[UH-1H]

Occasionally ur spindle (feathering) shaft will break and the 2 blades with the blade grips will fly to a place far far away..hopefully u can retrieve them, and if u lost it, hopefully its not a metal on...
Then dont forget the main shaft will surely bend..and with that if u are using metal hub, just make sure its not bend also.
Blades, those 325pro are quite ex with "consume" weekly....
Main gears...well it u are using idle up and normally forget to hit throttle hold before impact, ur gears will mostly likely strip...
As for servos, if u are using HS-55..good luck..

[UH-1H]

Or god...so many typo, i have to get use to this non ergonomic keyboard.

[awesome]

and of course the canopy..

and i am so sick of repairing them that i now prefer to buy off the shelf liao...

just ordered 3 pieces from helidirect

[awesome]

sighz...and skids oso...they are so soft they break easily..but good thing is that, this minimises the load transfer to the frame, which will cost u more time and money to fix..

[awesome]

and maybe belt too...they fray and will snap..

oh well...which part of the heli have we not mentioned??

[Nazar78]

Some other was not part of the heli, but my HEART

[skareb1986]

well, i smashed my alieron servo case in a awkard crash before, my QPCM rx was also spoilt after a hard side in crash and no the rx did not recieve any physical damage *sigh* , oh yes i have broke both plastic tail case's and tail grip's before.... hmmm with that said i guess u proberly can break anything in a crash ....

[skareb1986]

typical cost range when i was learning FF was proberly around ~50 - 70 bucks.... now it seem's that everytime if i do crash (which has been minimised thankfully ) .. it'll always be above 100 bucks...

[awesome]

well, i smashed my alieron servo case in a awkard crash before, my QPCM rx was also spoilt after a hard side in crash and no the rx did not recieve any physical damage *sigh* , oh yes i have broke both plastic tail case's and tail grip's before.... hmmm with that said i guess u proberly can break anything in a crash ....

speaking about electronics..

you saw the spoiled motors and the no. of quark 33A boxes i have at home??? they probably worth at least 3 or 4 os50s when new..

and the metal parts..my metal tail casing broke into two on both the halves..it sheared of at the edge of the tail boom..yes, part of the casing is still gripping the boom the the other part is hanging loose by the belt..

it really makes me wonder if flying electric heli is any cheaper..

i haven't talk about the batts yet hor..

[awesome]

the more i think about it the more frustrating it gets..

[w_kby]

Crash Expenses

But...but....brother, your are in the stunt man and dare devil catagory. I think Awesome is also there already.

typical cost range when i was learning FF was proberly around ~50 - 70 bucks.... now it seem's that everytime if i do crash (which has been minimised thankfully ) .. it'll always be above 100 bucks...

Don't scare out friend leh. At initial stage of hovering and FF, I think the cost of crashes may not be that high if your don't push yoursel too hard. Go slow and take your time.

I find that the frequent changes after a crash are the 3Bs (Boom, Belt, Blades)

To save cost for initial learning stage:

Boom:
Use the Diaso $1/- DIY Boom ISO Align's $6+. These DIY Boom are cheap and good
Avoid Carbon boom, alot of vibration, and if boom strike, it cuts your belt too

Belt:
Use Industrial Belt from LHK $7.59+GST ISO Align's $15.60. These LHK belts are really cheap & better
If you like an even better one, get the PU belt from LHK@ $9.50+GST
I found these belts more durable then the Align ones. Survive several boom strike (carbon boom)

Blades:
Pro-wood blades are very good blades in all aspect but expensive ($21) for beginner.

Fibre blades are strongh but EXTREMELY difficult to track the blades. Your mechanical setup (esp the linksages) need to be almost perfect to be able to track these blades. What's worse, in a mild crash, all the shafts will be severely bend, servo gear strip, linkages flown off. These blades are not really cost effective for newbies.

ABS blades very soft and hardy. I am trying to get a pair to test out but have seen Super-Hornet used them and tracks perfectly. Although I think these blades are also not easy to track unless your mechanical set up is perfect like SH. As the ABS blades are must softer, it will not transfer all the impact to the other components like the Fibre blades which are very stiff and heavy. Hence it might be a cost saving way to fly for newbies.

Carbon Fibre blades are for the experts!

At the initial stage, my crash expense range from $20 ~$50 per crash. For the Woodie blades, I sometime repair them and use back (minor damage). In some case, only one of the blade broke and I keep the good one for future matching. For the damaged woodie blades, I sometime cut them shorter for my Honey Bee.

If you try hard enough, you can bring the cost down. That is why I have decided to start the Trex $ saving thread. I hope more will share their idea to help bring down the overall cost of maintaining this hobby.

HopE thIs HelPs

[awesome]

ok lah...its not all that expensive to crash...you can re-use the flybar over and over again (i really really save a lot of money on this one )..

thanks bro..your cheap thread really saves some expensive crashes..thumbs up for ya!!

[skareb1986]

well cost saving or not, i love the daiso boom alot, so much stronger than the align one, looks kinky too ... using it currently, have 2 more spare and cut one's in my toolbox