Trex 600le mast stopper MOD!

[Chris Boughton]

Hi guys this a mod for the 600le were ive had an idea to move the main mast locking collar above the maingear bearing block and buy another locking collar to put under the top bearing block. Ive thought of this to try and gain some extra pitch and cyclic on the swashplate without it binding on the locking collar in the original place. The reason for the extra collar is just to reasure the shaft wont move. (you might also have to flip some of the bearing blocks upside down so you dont put stress on the bearing block retainer!!)

If anyone has tried this mod or has any good or bad points about it PLEZE COMMENT AND GIVE YOUR VIEWS!! THANKS

[Gingerr6]

You should be able to get +- 14 do you really need more pitch ????

[waveydavey]

You only need a 16 degrees or so of combined pitch to stall the blades and with the current setup giving you 13 degrees of collective and 7 degrees of cyclic, do you really need anymore. I don't think my OS could handle anymore with my heavy thumbs

[Eckchaz]

Already agreeing with the posted comments by Gingerr6 and Waveydavey.. do you really need anymore?

Also, if you did do this mod.. does it really give you more cyclic pitch at the max +/- pitch.. I'm running +/-12 with 13 cyclic but can probably do +/- 14 with less cyclic but Like Daves mentioned already, I dont think the engine can handle my thumbs!

[0h5h1t]

and when do you ever use full cyclic at the extremes of neg or pos pitch..?

[Gingerr6]

and when do you ever use full cyclic at the extremes of neg or pos pitch..?

Just before it hits the deck ~

[waveydavey]

and when do you ever use full cyclic at the extremes of neg or pos pitch..?

Very true I suppose, so little chance of ever stalling. In that case go for it as long as you can pull more than 13 degrees of pitch, what engine are you using.

[waveydavey]

Already agreeing with the posted comments by Gingerr6 and Waveydavey.. do you really need anymore?

Also, if you did do this mod.. does it really give you more cyclic pitch at the max +/- pitch.. I'm running +/-12 with 13 cyclic but can probably do +/- 14 with less cyclic but Like Daves mentioned already, I dont think the engine can handle my thumbs!

Eddie, do you really have 13 of cyclic, I think I've got 7, theres a bit more there but I don't think double that.

[Eckchaz]

Eddie, do you really have 13 of cyclic, I think I've got 7, theres a bit more there but I don't think double that.

Its got to be close I've moved the end points aswell though.. I cant even check at the moment as I've got the head off, as I changed the main mast to the shorter FBL one and the exisitng FBL links are too long and i'm waiting for the 700E ones to arrive I'll report back once I get it sorted!

[moyesboy]

I noticed wear marks on my locking collar when fixed in the std position. This was despite fitting a Quk swash which has more clearance than the original align on the underside. It only binds with full negative and lots of cyclic but I was getting it touching regularly in flight without massive bogging or blade stall.

Moving the collar allows an adjustment to the links to place zero pitch to allow maximum cyclic at both extremes of collective. Otherwise I don't think you can get enough cyclic at full negative without binding. Adjusting it upwards makes the mixing arm base hit the bottom of the head on full +ve collective.

No need to buy another collar as you soon ackquire them - one in every pack of main shafts!

In my experience those claiming a full 7 degrees of cyclic and +/-13 must have quite restricted cyclic on full collective.

Note also the bind between the long links and the SF arms at full positive and lots of cyclic. Yuo will see a mark on the bottom edge of the long end of the SF arm and it is there on everyones 600 that flies 3D. Doesn't seem to make the link pop off though.

I think I must take credit for the idea of moving the collar - you can search my post from maybe 18 months ago with this suggestion (perhaps someone else did it earlier) - that post received only supportive and interested comments. Now the same suggestion receives some rather negative comments? That sure does reflect some sort of change of attitude on this forum doesn't it!

The idea for the extra locking collar under the top bearing I also mentioned but this was bandied about on this and other forums before that. On the 600n you must shear the jesus bolt through the main gear assembly before the collar comes in to play. However with the collar in place you can still make a forced auto landing should the jesus bolt snap. This was mentioned here in a post after a certain Robgt suffered a spectacular failure and final burial of his Sceadu in front of a big audience due to such a jesus bolt failure!

[rapidgaz]

U can get 12-+ and 13 cyclic easy with fbl which Eddie has got, and you deff don't need to do mast collar mod


Sent from me

[waveydavey]

I think I must take credit for the idea of moving the collar - you can search my post from maybe 18 months ago with this suggestion (perhaps someone else did it earlier) - that post received only supportive and interested comments. Now the same suggestion receives some rather negative comments? That sure does reflect some sort of change of attitude on this forum doesn't it!

Where are the negative comments? I can't see any only questions as to why you would need so much cyclic and whether the engine could pull that much. Maybe the comments are different because it's different people commenting, just a thought!

Change of attitude on the forum?

[Mojo]

after a certain Robgt

Who is that Robgt that keeps on coming up in conversations??

[Eckchaz]

Eddie, do you really have 13 of cyclic, I think I've got 7, theres a bit more there but I don't think double that.

Dave, I got my 700 links today and just chekced it.. I'm +/-12 with 12 cyclic

Now the same suggestion receives some rather negative comments? That sure does reflect some sort of change of attitude on this forum doesn't it!

No change in attitude mate, I wasnt here during first round posts! Also, I still wasnt negative about your mod and niether was the others. We was only asking if he needed more and wasnt knocking the mod itself!

[Chris Boughton]

Wow very mixed opinions guys um srry if this has been posted previously as i wasnt aware of it!! But i only really want to move the collar so i dont get binding on the bottom of the swash not just to get more pitch and cyclic!! Anyways ive moved the mast stopper and will feedback my results!!!

Tahnks to everyone!!