Trex 450 plus help

[flyingjacko]

I agree you will buy new main & feathering shafts in the future so buy them now and try them both. A good way to see if thay are bent when out of heli is roll them on clean glass, there should be no noise if straight. and don't forget the thredlock when replaceing bolts/nuts.

flyingjacko

[Goshawk]

maybe i should take it outside an try fly it

No,no check main shaft first to me it's shaking!!

[flyingjacko]

When you took head off, did you replace it back the same, = same link back on same link, if not could tracking again.

flyingjacko

[Paz26181]

Take all blade off and then spool it up to a higher head speed and see if it still shakes before buying anything. test and then take a part off one at a time and keep testing till you find the part/cause.

Hope it goes well

[RYAN CAIRNS]

It's not hard take bolt out of main gears and head pop links off and pull it out 5 min job ill await reply in 20 mins

thanks for the help. yes main shaft is bent at the top

[Streetluge Chris]

I would defo change the mainshaft.

[RYAN CAIRNS]

I would defo change the mainshaft.

yes iv checked and iv seen that its bent so just gona order 2 or 3 incase of other crashes

[Goshawk]

thanks for the help. yes main shaft is bent at the top

Just glad you didn't pop outside for a test fly

[RYAN CAIRNS]

Just glad you didn't pop outside for a test fly

yes that prob would a been messy. part ordered now so hopefully it comes on wednesday

[Goshawk]

As flyingjacko says don't forget a very tiny bit of thread lock on screws for safety wen re assembling

[RYAN CAIRNS]

yes ok no probs. thanks for help.

[Ghillie47]

I had the same problem and supected the shaft. I took it out and put it in a cordless drill and spun it up . It shows up pretty good.


John

[parksy]

I know you already found the main shaft was bent, but you should be able to tell before taking it out by turning blades by hand and see if swash plate wobbles back and forth/ side to side. This can also show up worn bearings. ps you might as well order 4 or 5 main and feathering shafts, you'll need em soon enough