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HelicopterKasama Srimok 90 › Cyber head play!
08-31-2009 04:49 PM  8 years agoPost 1
Asid

rrVeteran

uk

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Hi

I have the Cyber Srimok.

I followed the instructions. Installed the grips with the shim spacer on either side but i still have a small amount of play.

Any ideas?

By the way i have built many helis and this is not a builder issue.

Regards

If it ain't broke then break it.

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08-31-2009 05:31 PM  8 years agoPost 2
SJo1

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Finland

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Hi,

I believe this is common issue in all the head's.

Asid what is you Srimok Serial?

Mine is #0900221

I think these CyberHead's were made in the same time frame?

I had same issue, you need to use feeler gauge between grips and head.

mine was 0.90mm + 0.40mm so total 1.30mm

This is how I did it:

Put feathering shaft to high speed drilling and shorten it with grinder with gentle hand from both ends to get correct.

Remember to measure twice and do once or something clever.

Finally I got my ccpm links to gyrobot "0 subtrim"

Let see how it works after all the work done for it.
- Frame tank area enlargement
- Head spacing to minimum
- CCPM links to sub zero
- Tail servo JRDS8900G -> Futaba BLS251 again sub zero
- COG needs still to be check / set

-Samppa

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08-31-2009 05:45 PM  8 years agoPost 3
Asid

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uk

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Hi

I think extra shims would do it ...

However ...

WTF?

$1630 FOR THE KIT AND NO F*&%^*G SHIMS

If it ain't broke then break it.

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08-31-2009 05:49 PM  8 years agoPost 4
SJo1

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Finland

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Yes, no freakin' spare shims and paid 1290Eur

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08-31-2009 05:55 PM  8 years agoPost 5
Asid

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uk

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If it ain't broke then break it.

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08-31-2009 07:33 PM  8 years agoPost 6
Mercuriell

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Sunshine Coast, Queensland, Australia

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Put feathering shaft to high speed drilling and shorten it with grinder with gentle hand from both ends to get correct.
The spindle is free floating so only necessary to grind down one end - must have been an out of tolerance batch of spindles as mine was perfect with no shims

John

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09-01-2009 05:31 AM  8 years agoPost 7
SJo1

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Finland

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Original Feathering shaft that came with kit was 91.85mm, took 1.3mm off
Spare that came from Realraptors was same length

Reason for shorten from both end's was threading was not equal lenght.
-Samppa

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09-03-2009 01:12 PM  8 years agoPost 8
Asid

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uk

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Anyone else?

If it ain't broke then break it.

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09-03-2009 02:01 PM  8 years agoPost 9
mrloudly

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Naseby Northampton England

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.4mm mine.

Didn't sort the Vibes though...

Have just turned up some hard mount bushes to see how they go.

Andy

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09-04-2009 04:42 AM  8 years agoPost 10
nyc863

rrNovice

australia

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I just measured mine, cyber head, and serial 335,

the feathering shaft is 92.35mm long and the thread depth on one side is 17.35mm, and 17.50mm on the other.

So what size should it be for no play?

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09-04-2009 04:54 AM  8 years agoPost 11
SJo1

rrApprentice

Finland

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You need to use feeler gauge between grips and head.
then count them to get total free play to take off.

-SJo1

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09-04-2009 06:10 AM  8 years agoPost 12
nyc863

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australia

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fine, but if that is the case there must be other parts appearing with variable sizes as well! such as the head, the blade grips, otherwise the spindle would need to be a certain exact size and no bigger or smaller.

a kit with laser etched labeling on each part leads one to expect only one production error at a time..

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09-04-2009 07:06 AM  8 years agoPost 13
mrloudly

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Naseby Northampton England

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Laser etched parts means nothing apart from a part number and making things look pretty. Even "Batch" numbers are only as good as the inspector checking the bits (looking at Kasama's website, if they are using batch numbers I'd like to know on what recognised quality system this marking is based?) ;-)

CNC's are good, but once again their produce is only as good as the guy wielding the micrometers!

There's a lot of tolerances on those heads that need tying up to enable everything to fit A1..

Andy M

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09-04-2009 07:09 AM  8 years agoPost 14
mrloudly

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Naseby Northampton England

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Run the heli and you can measure the gap between the blade holders and hub with a decent digital vernier, obviously using the internal side ;-) Feelers not required

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09-04-2009 08:39 AM  8 years agoPost 15
nyc863

rrNovice

australia

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I'm joking, sort of. About the laser etching.

However the impression Kasama wants to give is nothing but the best. I mean, everything is, if anything, over-engineered. Right? All the trouble taken to split up all the bits into so many mini bags. Comments in the manual about measuring 0.3mm gaps. All those rubber o-rings everywhere.

Yet apparently the spindles come out at random lengths.

And as per my other topic, which hasn't had a reply yet, the main shaft is exactly @ 10mm dia, but (in my kit) the collar inside the main gear and one way bearing is dia > 10.10mm, which means it slides on too easily .. can be rattled (tilts) on the shaft.

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HelicopterKasama Srimok 90 › Cyber head play!
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