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Tronix · 12-24-2011, 01:27 AM

was no one else impressed with the speed of that 700e?

MarkFlysHelis · 12-24-2011, 06:54 AM

Anyone besides me worried about boom strikes? Keep lowering the head, it's not if, it's when...

On both my 700N and E's, there were very small dings in the boom with the FBL main shaft and V2 head where the blades barely clipped the back on the boom on "less than smooth landings". (both with 690mm blades)

The 7HV head is lower. I saw two boom strikes at the Orlando Heli Blowout with these models. Both were catastrophic.

This Align DFC design appears to be lower than both.... May not be an issue, But, has to be a concern, right?

BakedMopar · 12-24-2011, 12:31 PM

Quote:

Originally Posted by MarkFlysHelis

The 7HV head is lower. I saw two boom strikes at the Orlando Heli Blowout with these models. Both were catastrophic.

Do you know whos models this happened to?

MarkFlysHelis · 12-24-2011, 01:13 PM

Quote:

Originally Posted by BakedMopar

Do you know whos models this happened to?

1 was Kettlehut, don't know the other.

ragge1 · 12-24-2011, 02:42 PM

hopp they make this head for the 450 heli

BakedMopar · 12-24-2011, 06:27 PM

Quote:

Originally Posted by MarkFlysHelis

1 was Kettlehut, don't know the other.

Thanks.

CNCjunkie · 12-24-2011, 07:02 PM

Quote:

Originally Posted by znbang

DFC is Direct Flight Control.

Maybe no one else noticed but if you look at the mainshaft lower hole, the bottom of the shaft has been extended to reach a 3rd main bearing...

terrabit · 12-24-2011, 07:39 PM

That looks to be correct. The length below the hole is greater than the current mainshaft. Finally.

OnTheSnap · 12-24-2011, 09:10 PM

Quote:

Originally Posted by MarkFlysHelis

1 was Kettlehut, don't know the other.

If you've seen Kettlehut fly, you'd realize he could boom strike any heli. He maxes out cyclic and pitch quite often in his routine.

MarkFlysHelis · 12-24-2011, 09:16 PM

Quote:

Originally Posted by OnTheSnap

If you've seen Kettlehut fly, you'd realize he could boom strike any heli. He maxes out cyclic and pitch quite often in his routine.

Yea, I know him, seen him fly MANY times. Great guy, great pilot.

To say he or anyone else that fly's hard smack could boom strike any heli is a stretch.

Point is, You keep moving the blades closer to the boom, Strikes are going to occur more often.

OnTheSnap · 12-24-2011, 10:08 PM

Quote:

Originally Posted by MarkFlysHelis

Yea, I know him, seen him fly MANY times. Great guy, great pilot.

To say he or anyone else that fly's hard smack could boom strike any heli is a stretch.

Point is, You keep moving the blades closer to the boom, Strikes are going to occur more often.

Part of getting a boom strike is setup. I seem to recall he runs extreme pitch/cyclic and likes to peg the sticks. My point is he's not a good example for this discussion.

504Rone · 12-24-2011, 10:22 PM

Quote:

Originally Posted by terrabit

That looks to be correct. The length below the hole is greater than the current mainshaft. Finally.

I knew it would only b a matter of time.

Dflyer · 12-25-2011, 05:23 AM

the only difference with the Compass head is that Compass uses delrin tubes as for Align everything is alu.

Compass used the delrin rods in order to put less stress on the swashplate and alse to let them compensate the phasing, I wonder what these Align alu rods will be doing to your swashplate after a lot of hard flights. Time will tell ......

Grtz,
Dirk

brian94066 · 12-25-2011, 11:17 AM

Quote:

Originally Posted by Dflyer

the only difference with the Compass head is that Compass uses delrin tubes as for Align everything is alu.

Compass used the delrin rods in order to put less stress on the swashplate and alse to let them compensate the phasing, I wonder what these Align alu rods will be doing to your swashplate after a lot of hard flights. Time will tell ......

Grtz,
Dirk

SAB has aluminum rods also

lloydcole · 12-26-2011, 07:01 AM

Well i think this is great, align have really stepped up there game recently for the better,
I do think they will offer this as an upgrade and not as standard e.g a combo

More money that way for them and for the non hard 3d guys they could be more than happy with the way the head ia now? I would be, beautifully made rotor head.

Mystic3D · 12-26-2011, 10:10 AM

I like the design. Just wondering what part is sacrifical in a crash now that the blade grip links are so robust.

Servo Gears?

terrabit · 12-26-2011, 01:43 PM

Quote:

Originally Posted by Mystic3D

I like the design. Just wondering what part is sacrifical in a crash now that the blade grip links are so robust.

Servo Gears?

It'll probably be one or a combination of servo gears, bladegrip arms and swashplate. Best case would be a ball-link or so. I wasted a set of servo gears and grip arms with the v2 setup in my last crash.

popokatepetl · 12-26-2011, 02:28 PM

Actually what's the problem with the current head?

ShaneJourdan · 12-26-2011, 02:36 PM

Quote:

Originally Posted by popokatepetl

Actually what's the problem with the current head?

Nothing, I actually use the V1 grips with KDE head and its better than I am.

I think the Direct Flight Control head, shorter shaft and control rods/arms will speed up the roll behaviour, a little less kinetic energy. It seems to move the mass closer to the center and without the washout and a more rigid control arm a pro may find better more accurate control.

KDE Direct · 12-26-2011, 07:38 PM

The Compass head design does have some great innovations to it for simplicity, so I can see the attaction to it from a manufacturing standpoint.

One question I have is the height of the blades to the tail boom with this new head. If you study the Compass 7HV design, it appears to have a very short-shaft and lowered head design, but the frame is designed such that it sits considerably higher than the ALIGN frame and the boom sits below the level of the main gear. In this regard, good mechanics allows for a short-main shaft (where all the bending loads are concentrated), with still adequate clearance for the rotor head above the tail mechanics.

Can someone measure the distance from the bottom of the main blades to the tail control rod on the Compass 7HV (essentially, the height for blade-flex allowance)? I bet it will be surprising that this isn't much lower than the current ALIGN design, as the ALIGN tail boom sits much higher in the frames and thus, requires a higher blade-location for proper clearance.

At 2300 rpm, the blades are significantly more loaded in centrifugal forces to prevent blade flex. At 1950 rpm on a Nitro, I'm hesitant to believe this won't be busting tail booms - I'm curious to see this in action and see if blade-flex isn't as much of an issue as it was in the past.

Maybe ALIGN will recommend a minimum headspeed or pitch range to prevent issue (probably smart not to run anything longer than 690s as well)?

12-24-2011, 01:27 AM	#41 (permalink)
Tronix Registered Users Join Date: Sep 2008	was no one else impressed with the speed of that 700e? __________________ honor guide me

12-24-2011, 06:54 AM	#42 (permalink)
MarkFlysHelis Registered Users Join Date: Jul 2007	Anyone besides me worried about boom strikes? Keep lowering the head, it's not if, it's when... On both my 700N and E's, there were very small dings in the boom with the FBL main shaft and V2 head where the blades barely clipped the back on the boom on "less than smooth landings". (both with 690mm blades) The 7HV head is lower. I saw two boom strikes at the Orlando Heli Blowout with these models. Both were catastrophic. This Align DFC design appears to be lower than both.... May not be an issue, But, has to be a concern, right? __________________ [COLOR=Navy] #FutabaUSA , #XLP, #SpinBlades

12-24-2011, 02:42 PM	#45 (permalink)
ragge1 Registered Users Join Date: Aug 2009	hopp they make this head for the 450 heli __________________ \| Kraken 700 : Neo \| Atom 6HV : Evo \| Raw 580 : Neo \| vbct \|

12-24-2011, 07:39 PM	#48 (permalink)
terrabit Registered Users Join Date: May 2007	That looks to be correct. The length below the hole is greater than the current mainshaft. Finally. __________________ vbar T700E v2 DFC head, Pyro 700-45L, Jive 120HV, BLS451/BLS251, Edge 693/115 vbar CF Protos Scorp 3026-880kv, Ice lite 75, 9650/BLS251, SAB 430/KBDD 82

12-25-2011, 05:23 AM	#53 (permalink)
Dflyer Registered Users My HF Map location Join Date: Apr 2005	the only difference with the Compass head is that Compass uses delrin tubes as for Align everything is alu. Compass used the delrin rods in order to put less stress on the swashplate and alse to let them compensate the phasing, I wonder what these Align alu rods will be doing to your swashplate after a lot of hard flights. Time will tell ...... Grtz, Dirk __________________ The heli virus has infected me and i hope that there is NO CURE !! Compass Support Team __________________________________________________ _____ Warp 360 / 6HVU / CY Stingray / Invertix 400 / SH Little Spyder

12-26-2011, 07:01 AM	#55 (permalink)
lloydcole Registered Users Join Date: May 2010	Well i think this is great, align have really stepped up there game recently for the better, I do think they will offer this as an upgrade and not as standard e.g a combo More money that way for them and for the non hard 3d guys they could be more than happy with the way the head ia now? I would be, beautifully made rotor head.

12-26-2011, 10:10 AM	#56 (permalink)
Mystic3D Registered Users My HF Map location Join Date: Feb 2008	I like the design. Just wondering what part is sacrifical in a crash now that the blade grip links are so robust. Servo Gears? __________________ "If you think you can or you can not you are right" Goblin Xera 4530, YGE 160,VBar Diablo, HJive, 4525 Ultimate,VBar Synergy N5C sitting in Box...

12-26-2011, 02:28 PM	#58 (permalink)
popokatepetl BD Forum Support Join Date: Oct 2008	Actually what's the problem with the current head?

12-26-2011, 07:38 PM	#60 (permalink)
KDE Direct Registered Users Join Date: May 2006	The Compass head design does have some great innovations to it for simplicity, so I can see the attaction to it from a manufacturing standpoint. One question I have is the height of the blades to the tail boom with this new head. If you study the Compass 7HV design, it appears to have a very short-shaft and lowered head design, but the frame is designed such that it sits considerably higher than the ALIGN frame and the boom sits below the level of the main gear. In this regard, good mechanics allows for a short-main shaft (where all the bending loads are concentrated), with still adequate clearance for the rotor head above the tail mechanics. Can someone measure the distance from the bottom of the main blades to the tail control rod on the Compass 7HV (essentially, the height for blade-flex allowance)? I bet it will be surprising that this isn't much lower than the current ALIGN design, as the ALIGN tail boom sits much higher in the frames and thus, requires a higher blade-location for proper clearance. At 2300 rpm, the blades are significantly more loaded in centrifugal forces to prevent blade flex. At 1950 rpm on a Nitro, I'm hesitant to believe this won't be busting tail booms - I'm curious to see this in action and see if blade-flex isn't as much of an issue as it was in the past. Maybe ALIGN will recommend a minimum headspeed or pitch range to prevent issue (probably smart not to run anything longer than 690s as well)? __________________ -- KDE Direct, Inc. --

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