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3D Heli Depot . JR-Spektrum . Gyro Hobbies

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e-Robbe Eolo > Spirit Pro SE build problem
 
 
Skid Solo
Heliman
Location: Gerrards Cross, UK

I'm building a Spirit Pro Special Edition and all is going well except for when I offer the completed tail boom up to the frame, the tail rotor drive shaft doesn't appear long enough to engage with the main gearbox coupling. I've checked that the boom is fully pushed into the frame and into the tail rotor gearbox. Also that the plastic mounting bracket for the boom is correctly positioned in the frame.

Before I saw 5mm off the end of the boom (which would solve the problem) does anyone have experience of this issue and a (less drastic) solution?

Love the kit, though.
01-25-2005 Over year old.
 
 
Skid Solo
Heliman
Location: Gerrards Cross, UK

DOH!

I took everything apart, checked the instructions and re-fitted and - what do you know?

It fits & works.

And I still don't know why.

To the Gods @ Robbe: "My humblest of apologies for ever thinking that your manufacturing was less than perfect. (We'll overlook the defective tail rotor blade holder under these circumstances). Next time I will use the saw blade on the builder, not the model."

Still love the kit..
01-25-2005 Over year old.
 
 
darrens
Key Veteran
Location: United Kingdom

there was a previous post on this exact point and that appeared to be solve by "tapping" the shaft into place. Apparently, the fit was so tight that it was just not going in that last 5mm (no jokes please, the actress and bishop are busy with other things!)

He who dies with the most toys is the winner!
01-25-2005 Over year old.
 
 
Skid Solo
Heliman
Location: Gerrards Cross, UK

Yep, saw that post. However, when I re-assembled I used a different order of construction and that seems to have cured it.

Now if someone can just explain to me how to CA the ball links onto the CF tail boom braces, I'd be grateful. The braces are too large in diameter to fit inside the ball links (steady, actress & bishop) , so can you safely/successfully file CF down to fit?
01-25-2005 Over year old.
 
 
darrens
Key Veteran
Location: United Kingdom

I should think that would be ok as long as you are only taking a little away.
Just seen you are from Gerrards Cross....I had a meeting there today in the Bull hotel (useless but almost relevent bit of trivia)

He who dies with the most toys is the winner!
01-25-2005 Over year old.
 
 
HeliDuce
Senior Heliman
Location: Nashville, TN

Are you positive you have the right ball links for your tail boom brace? Mine fit just a tad bit loose, a drop of CA and it glued it right on.

Gary
01-25-2005 Over year old.
 
 
Skid Solo
Heliman
Location: Gerrards Cross, UK

OK - out with the file...

The Bull eh? I've lived here nearly 8 years and never set foot in the place. Always looks busy though, so I guess it must be nice. That's probably where I'll hold the inaugural meeting of the Frustrated Spirit Builders Assoc.

Thanks for your help
01-25-2005 Over year old.
 
 
Skid Solo
Heliman
Location: Gerrards Cross, UK

HeliDuce

They're the only ball links left, and they are considerably larger in diameter than the others I've used, so I think they are correct. Although after the boom-fitting fiasco, I'm prepared to doubt everything I've done so far!
01-26-2005 Over year old.
 
 
cyclic
Heliman
Location: Berkshire UK

Skid Solo,
I've built the same kit.

Problem 1, the short tail boom assembly.
Did you ensure that those small rubber pads were inserted in the female parts of the drive joints?
In my kit this info was on a seperate sheet and not that obvious.

Also the locating slot in the boom which engages into the chassis housing benefitted from a slight easing with a file. All I did was take the square edge (3 rubs with a needle file) from the leading edge only of the slot (creates a small "Y" ) so it did not shave the plastic locator peg on its way in, thus avoiding having the shaving stopping the boom going all the way in.

No disagreement though - it needed a firm push to send it home, but this time it bottomed in the hole rather than ride up short.


Problem 2, the ball links on the carbon supports.
Chamfer the rod ends with a fine file to give a start to the link. This is a very fine small removal of material. I do this by holding the file in one hand whilst rotating the support with the other in a lathe kind of way, then offering the file up to the carbon rod at 45° and thus remove that square edge.
Dry fitting the links stretches the opening slightly so when you epoxi them as I did, they slide to the bottom of the link just fine.


Hope this helps.
01-26-2005 Over year old.
 
 
Skid Solo
Heliman
Location: Gerrards Cross, UK

Thanks for this Cyclic. I've now got the boom braces on. Just didn't want to force anyting.

Not quite sure what you meant about the "small rubber pads ", but the boom is on and the drive has coupled at both ends, so I'm happy to leave well alone at this stage!

There are quite a few gaps in the instructions, eh?
01-26-2005 Over year old.
 
 
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E-flite . Next D . Fast Lad Performance

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e-Robbe Eolo > Spirit Pro SE build problem
 
 
cyclic
Heliman
Location: Berkshire UK

Be careful.

If you are viewing the drive shaft locating into the tail drive coupling through the small hole and seeing a 'fully' located coupling then watch out. Watch out as you can't see what is happening at the other end.

I had missed out the small rubbers only to notice that through that inspection hole, all looked well.
After rotating the drive a bit I then noticed that there was minimal engaging of the drive couplings.
I checked that the boom was fully in the main chassis by looking back from the main gear into that housing area - all was well.
So how could there be a lack of length in the drive rod..?

I then realised that there were two small rubber bungs 4mm in diameter, 2mm in thickness in separate bags seemingly left over.

Then looking back in the cardboard heli box, there was a small piece of paper with the info about where they go, which is into the slotted drive couplings S5162 at either end of the tail drive.

In effect they dampen any end to end play in the tail drive shaft. In doing this job, they also space the drive shaft at each end thus stopping over engagement in one coupling only to be marginally engaged at the other.


The part number for the bungs is 75-51612 and relate to building stages 1.3 & 6.5

Hope it's clearer now
01-27-2005 Over year old.
 
 
Skid Solo
Heliman
Location: Gerrards Cross, UK

That's all too clear now Cyclic, as having finished the kit last night, I have the two spacers (plus the seperate instruction "note") left over... My own fault for not going through the bumpf right from the start - and for not making sure I understood all your comments properly.

Oh well, off comes the boom again.

Thanks for your help & advice. Hope to get Skyline to test fly my Yellow Peril over the weekend and then I'm off on my own.

Expect to see CF shrapnel inbound from south Bucks from Sunday onwards!
02-03-2005 Over year old.
 
 
cyclic
Heliman
Location: Berkshire UK

Skid Solo,

Pleased to have helped.

I'm 90% built but the day job keeps getting in the way.

I'd be interested to know how you get on with the maiden flight especially in respect of any alterations either you or Bob make, to get the ship floating as it should.
02-04-2005 Over year old.
 
 
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e-Robbe Eolo > Spirit Pro SE build problem
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