Bobby Watts Tail

[Ampdraw]

Originally Posted by BHChieftain

Hi,
Which tail shaft is used in the Bobby Watts Tail? Stock 200 V2 shafts?

Chief

#207010 is the 16T version
http://www.rcrotorhobbies.com/produc...on_16T)_207010

Stock V2 tail shafts are threaded.

Amp

[clytle374]

Amp, I thought maybe you were mis-seeing that arm. The angle of the cf has nothing to do with the angle of the bell crank. It sits at that angle to come back into line with the pivot point. But I've made a new picture to illustrate, when I opened the box I had a "what the heck" moment too. Of course I could move it and it became clear. The cf arm is angled because it can't mount in the center of the bearing.



A: This is where the bell crank assembly pivots.

blue line: This is the effective bell crank. It is 90*, I'm just real bad drawing with the mouse

But I agree with everything else except maybe 2 things.

One is that you're better off with the short part off 90* than the long part. The long part will stay more linear over a longer distance than the short one. It might be the same either way. Ah, never mind I'm getting tired. I'd have to do the trig to be sure on that.

The other is planning around the cows. All week our 2 cows wouldn't come home for nothing short of getting a rope. Today I'm late getting home and they are our there bawling me out wanting milked

Cory

[Ampdraw]

Thanks Cory,
Yep I was not seeing the proper geometry of the Watts tail. I looked but did not see hehe.

Seems that tail is setup pretty nice for a 0 degree gyro setup. 90 degree bell crank (or very close from what I can see), 0 pitch at that point and planty of slider travel as the pivot mount is well out of the way (unlike the v2 tail)

I will think through the 90 degree for the short side of the v2 crank vs a 90 on the long and then change the length of the crank mount to get the desired geometry.

Incidently spent some time trying different tail blades this arvo all at the same ball position...6.5mm. Tried the Gaui V1 stock white, the Gaui square 42mm and what looked to be almost identical ebay Align 250 tail blades.

The longer 42's did better than the V1's....stops were cleaner, punchout and descent remained more true. This was after adjusting gain appropriately but making no other changes. I prefer white blades for visability and suprisingly the ebay 250 tail blades, even though they have almost identical sillouette to the Gaui 42's did not perform as well. On close inspection the airfoil on the ebay blades is thicker and the shape not as "airfoil" like. Virtually nothing in it at quick glance but a noticable difference when back to back testing the Gaui black 42's against these ebay blades with the exact same gain and mech settings.

So much involved in such an itsy spinning "toy" hehe.

Ps: Gaui Mini Vbar http://www.rcgroups.com/forums/showp...postcount=4097

Amp

[clytle374]

I got some of the 42mm yellow blades off ebay myself. The first flight on nicked the ground and shattered, bending the tail shaft. Might have a few pair left, just pay shipping

Is that bell crank the same as the one for the plastic tail? Maybe they used the large angle simply to move the slider out without having to lengthen the plastic mount that is already flimsy as it is. Just a wag. Anyway, I'll totally agree it isn't ideal.

If you don't like putting the tail on the other side of the boom to get a 90* long arm at hover, maybe you could flip the blade grips around reversing the linkage? idk, never seen a V2 tail in real life.

Cory

[newhelliguy]

Originally Posted by clytle374

Amp, I thought maybe you were mis-seeing that arm. The angle of the cf has nothing to do with the angle of the bell crank. It sits at that angle to come back into line with the pivot point. But I've made a new picture to illustrate, when I opened the box I had a "what the heck" moment too. Of course I could move it and it became clear. The cf arm is angled because it can't mount in the center of the bearing.



A: This is where the bell crank assembly pivots.

blue line: This is the effective bell crank. It is 90*, I'm just real bad drawing with the mouse

But I agree with everything else except maybe 2 things.

One is that you're better off with the short part off 90* than the long part. The long part will stay more linear over a longer distance than the short one. It might be the same either way. Ah, never mind I'm getting tired. I'd have to do the trig to be sure on that.

The other is planning around the cows. All week our 2 cows wouldn't come home for nothing short of getting a rope. Today I'm late getting home and they are our there bawling me out wanting milked

Cory

This is what I was trying to show in pic 2.

The angled arm makes it confusing but the geo is correct.

Nice job clarifying it.

[BHChieftain]

+1, Thanks Cory!

[clytle374]

Originally Posted by clytle374

If you don't like putting the tail on the other side of the boom to get a 90* long arm at hover, maybe you could flip the blade grips around reversing the linkage? idk, never seen a V2 tail in real life.

Cory

Never mind, just realized the links won't line up to the slider if you flip the grips.

@Chief and Newheliguy, Thanks, just trying to help. I l

[lazor 22]

So... It's not the same?

[clytle374]

Originally Posted by lazor 22

So... It's not the same?

Yes, minus the collar for the small boom, grips, hub, blades, and fin. But the fin works on the 200.

Cory

sorry, we jacked your thread

[fusionsx00]

All e rc has the grips in stock, looks like 3 bearings in these
I just got mine today

[lazor 22]

What are better 255 grips and hubs or the Bobby Watt's grips and hub?

[fusionsx00]

The integreted tail(is bobby watts) is the same for both helis
im not even sure that the tail grips are diffrent, post a pic of yours.

But gaui made new grips for the 255 tail(bobby watts)
look on allerc under 255 tail parts.

I even think the tail grips are tthe same, because the 200 grips screw on and the 255
have a set screw, I have both bobby watts tails and they look identical
the only thing I see is the 200 version comes with a diffrent fin and a spacer to fit the 200 boom

[clytle374]

Originally Posted by fusionsx00

The integreted tail(is bobby watts) is the same for both helis
im not even sure that the tail grips are diffrent, post a pic of yours.

But gaui made new grips for the 255 tail(bobby watts)
look on allerc under 255 tail parts.

I even think the tail grips are tthe same, because the 200 grips screw on and the 255
have a set screw, I have both bobby watts tails and they look identical
the only thing I see is the 200 version comes with a diffrent fin and a spacer to fit the 200 boom

Other people here have stated that the hubs and the grips are NOT the same. Including people who might know, like this quote from a email I received from Gaui.

The 255 and 200 blade grips for the Integrated Tail are different,
for 200 is #203678, and for 255 is #207029 , thank you.

Maybe you should know what you're talking about cold fusion.

Love
Cory

[fusionsx00]

i doubt you even have a gaui, none the less a helicopter

But here is why I said they are the same,
I have a gaui 255 and a 200, with the integrated tail
They are identical, so

I guess I struck a nerve in the other post, are you gona follow me around and pic at my posts, because that's harrasment, and I hope a mod sees this.

[clytle374]

Originally Posted by fusionsx00

i doubt you even have a gaui, none the less a helicopter

But here is why I said they are the same,
I have a gaui 255 and a 200, with the integrated tail
They are identical, so

I guess I struck a nerve in the other post, are you gona follow me around and pic at my posts, because that's harrasment, and I hope a mod sees this.

I can believe you or Gaui, Gaui rep, or the gaui website, or other less rude members here. I could be wrong., but I'll go with the 4 of of 5 odds since I have never personally seen a 255. Of course gaui might be wrong.

I read something about mutual respect on here, so I mod will read this. I've posted in this thread a lot already and now you are going to accuse me of harassment. I was putting this off, then I got your response in the other thread and I didn't care if I corrected you in public. I do have a normal policy of correcting mis-info through PMs.

Of course I've seen another thing of yours I was going to ask you about after I doubled checked that I was right that you screwed it up.

Cory

PS Is this the normal way thing are around here? Cause I don't need any help this badly.

The last pic is identical? Heck, no wonder I can't fly.. I'm blind.

[fusionsx00]

[QUOTE
im not even sure that the tail grips are diffrent, post a pic of yours

I even think the tail grips are tthe same,[/QUOTE]

The last pic is of the hub, not the hub ve the hub and grips, geesh


really, im trying to provide accurate info here, and I think I did, with pics.
so I was wrong saying" I think "and" im not even sure"

I guess what im asking is what are you correcting me about?
and please don't pm me, im looking for the ignore option now, but just incase I don't find it fast enough

I can't believe I was right about not owning a gaui.

So your still saying I was wrong, even though the pics show what I am talking about
Stop spamming the thread

[clytle374]

Originally Posted by fusionsx00

[QUOTE
im not even sure that the tail grips are diffrent, post a pic of yours

I even think the tail grips are tthe same,

really, im trying to provide accurate info here, and I think I did, with pics.
so I was wrong saying" I think "and" im not even sure"

I guess what im asking is what are you correcting me about?
and please don't pm me, im looking for the ignore option now, but just incase I don't find it fast enough

I can't believe I was right about not owning a gaui.

So your still saying I was wrong, even though the pics show what I am talking about
Stop spamming the thread[/QUOTE]

I posted a pic way up in this thread. Your last pic clearly shows they are different. I'm not putting up with this. Are you drunk?

I check your past post to see if this was normal for you. Here you go.

First, your zero slop mod cannot for the slider play work unless you are putting the pitch link in a bind. Dumb

Secondly, Loctite works in a pressed fit. You don't wipe it all out.

You are doing nothing but spreading a bunch of crap causing others to so stupid stuff too.

I am reporting both of out posts. If this is normal behavior around here, mods please delete my account.

Cory

[grumpy42]

The grips and hub are different for the 255 and the 200 (Bobby Watts)

Hub used on the 200 in conjunction with the Bobby Watts tail
The grips used with the Bobby Watts tail are the sames as those used on the V2 tail

Hub used on the 255
Grips used on the 255

The 255 grips are wider to accommodate thicker tail blades. There is probably no reason that you could not use the 255 grips/hub on a 200, you would just need to add shims to the tail rotor blades.

I know that the grips/hubs are different because I ordered 255 grips and a hub thinking that they were the same as the ones included with the Integrated tail upgrade - they are not!

There seems to be a misprint in the instructions for the Integrated tail upgrade. On the first page it lists that the part number for the hub is 203639 (which is correct), but on the page that shows the hub assembly, it lists the part number for the tail hub as 207020 (which is actually the 255 hub).

[fusionsx00]

So I bought a brand new 255 that had 200 grips on it?

I would not doubt it , the box was in the display.

Or,,, my 255 is about a year old, did the revise the grips?

[grumpy42]

Originally Posted by fusionsx00

So I bought a brand new 255 that had 200 grips on it?

I would not doubt it , the box was in the display.

Or,,, my 255 is about a year old, did the revise the grips?

I can't speak to the grips that are installed on your 255, but this is an image from the Gaui site of the 255 tail.



This is an image of the Integrated Tail Upgrade