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Home✈️Aircraft🚁HelicopterHIROBOHirobo SDX › Quality issues
04-15-2020 07:45 AM  41 days ago
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Richardmid1

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Leeds, England

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Quality issues
17 months since the last Hirobo topic on here! 😥.

I've just bought a new SDX HPM kit just for something to do during lockdown. The last SDX I had was 10 years ago! The quality on this kit doesn't seem the same as 10 years ago. The clutch bell is out of true with the pinion (factory installed), the main gear mesh is very slack and I can't see it lasting more than a handful of flights, the tail drive pulley doesn't run true (again factory assembled) and the sharp edges from the plastic mouldings just seem rough and low quality.

The clutch bell is more up and down movement so I'm not too concerned about vibrations as it does seem to balance ok, it's the main gear mesh that's bothering me the most as it's not adjustable. I've done some reading on here and seen many people advising getting the delrin main gear for longevity so I'm hoping that will be cut differently giving a tighter mesh? I've also ordered the 89T main gear in the hope that will tighten it up. I'd rather scream the motor a bit more and have better gear mesh.

Thoughts? Tips?
60% of the time, it works every time!
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04-16-2020 04:48 AM  40 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
/

Japanese hirobo kit doesn't look like that.

Probably, you got a bad copy.

/
Saludos cordiales,
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04-16-2020 02:25 PM  40 days ago
Richardmid1

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Leeds, England

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No, it's not a copy. It's not bad, still mostly exceptional quality, just a couple of issues which I don't recall from ownership 10 years ago. Maybe they are getting some parts made in China?60% of the time, it works every time!
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04-16-2020 11:59 PM  39 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
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It could be.

This time is hard for the hobby so, lowering prices they keep on business.

Lowering cost have this problem... Quality control.

/
Saludos cordiales,
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04-18-2020 09:14 AM  38 days ago
Goober1228

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QUINCY

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Hirobo is made in Japan (Hirobo Embla exception). Still. If you purchased this kit from RC Japan,then the kit was assembled from existing warehouse stock or made to order.
You should e-mail Chihiro at RC Japan and state your issues. They may be able to assist you. They are excellent at RC Japan.
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04-19-2020 12:52 AM  37 days ago
hgh001

rrApprentice

New Zealand

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Never had any quality issues, been flying Hirobo kits for a long time.

Take it up with the supplier.
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04-21-2020 07:32 PM  35 days ago
MEMFLIGHT

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St Leonards On Sea UK

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Hi Richard,

Sorry you're having a bad time with it.

Firstly I wouldn't worry about the gear mesh. With the standard plastic gears they expand when they get warm (e.g. flying) and the mesh will tighten up. The delrin machine cut gears don't do this anywhere near as much so can be run tighter when built. If the gear is too tight as standard then when it warms up in flight it will expand, get tighter, and a vicious circle will start until it strips.

I'm happy to send you out another clutch bell and tail gear, just drop me a line via the website and I'll get them in the post to you. It is all still made in Japan but even that is no protection from the occasional but of human error!

Many Thanks

Mark
Midland Helicopters, Hirobo, Futaba, Model Technics Fuel
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04-23-2020 07:21 PM  33 days ago
Richardmid1

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Leeds, England

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Thanks Mark, that's awesome!60% of the time, it works every time!
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