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Robbe Cuatro - Millennium - Nova - Dyna-X > Dyna X

The Old Guy
Senior Heliman
Location: UK Surrey

I have just done a deal and swaped a Fury Extreme airframe for a Dyna X airframe HAVE I DONE THE RIGHT THING!!!!!!!!!!!!!!

03-25-2007 Over year old.

HOMEPAGE

Sparkhead
Key Veteran
Location: Melbourne Australia

The DynaX is a nice machine and it will last for a long time with very little maintenance. The Robbe gear is second to none in my opinion.

Mick.

Robbe & Futaba.

03-25-2007 Over year old.

dogg5306
Senior Heliman
Location: Brussels, Belgium

Should your Dyna-X be in a decent shape... that's an excellent investment (IMHO)

Sure, there are other decent machines on the market but you defenitely didn't buy a bad one... actually you simply bought one of the best

(getting emotional here

)

MA Stratus
Avant Aurora
2nd Aurora (ordered)
Let's check that Vibe90SG

03-25-2007 Over year old.

HOMEPAGE

The Old Guy
Senior Heliman
Location: UK Surrey

Thanks Guys
I will post again when i have it in the air

03-26-2007 Over year old.

HOMEPAGE

The Old Guy
Senior Heliman
Location: UK Surrey

Well i have got the Dyna-X and have it all up and ready to go.
Wring it out over the weekend weather permitting

03-29-2007 Over year old.

HOMEPAGE

Dr Lodge
Elite Veteran
Location: Guildford, Surrey - UK

Yeh!!! See you Sunday

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
Trex 500, Mini Titan, Gaui EP200

03-29-2007 Over year old.

The Old Guy
Senior Heliman
Location: UK Surrey

Test flew today Great "But"got fuel foaming
Any surgestions
Engine clocked in al less thean half a thou, MP2 pipe 30% magnum
2 turns out on main needle (could being a little rich cause it?)
Head speed 1850. sweet as a nut except for foam.
HELP!!!!!!!!!!!!!!

PS see you sunday Dr Lodge

03-31-2007 Over year old.

HOMEPAGE

Dr Lodge
Elite Veteran
Location: Guildford, Surrey - UK

Might be the engine/carb settings Ian, will have a look tomorrow. Will bring my Dyna along.

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
Trex 500, Mini Titan, Gaui EP200

03-31-2007 Over year old.

Dr Lodge
Elite Veteran
Location: Guildford, Surrey - UK

I saw this Dyna fly, its smooth but at tick over there's a funny ticking/knocking sound coming from the muffler. The inner baffle may be loose. My other suggestion is that the MPII muffler (connected to a C-spec engine) is amplifying the engine vibrations and due to the rigid method of mounting the fuel tank, is inducing vibrations into it. I suggested trying a different muffler like an Hatori 938 which uses a more flexible mounting method. I have this muffler on my Dyna and have no fuel foaming problems.

Anyone care to opine on my thinking?

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
Trex 500, Mini Titan, Gaui EP200

04-02-2007 Over year old.

dogg5306
Senior Heliman
Location: Brussels, Belgium

MP5 attached on mine (OS-91SZ Cline + VH)... not a single issue...
77,4dB at 1900rpm!

MA Stratus
Avant Aurora
2nd Aurora (ordered)
Let's check that Vibe90SG

04-02-2007 Over year old.

HOMEPAGE

The Old Guy
Senior Heliman
Location: UK Surrey

I tested a 938 on it in the garden (limited space) but all "apears to now be OK. Have orderd an SB 18 for it as it has a longer stub than the 938 (do not wish to melt the fuel tank)
Comment to dogg5306, i suspect that the SZ is a slightly smoother engine to begin with???

04-02-2007 Over year old.

HOMEPAGE

u.k. sailor
Veteran
Location: cambs uk

I ran a big bored, clined Cspec with MP2 at 1900 and no foaming sounds like something isn't running smooth so I would check the engine first, unless you know there is an issue with the pipe.

The inside of the frames should have been sanded and the tank put in with silicone seal IMO and perhaps this hasn't been done? could make a difference

I Have swopped the MP2 for an MP5 on my Vibe and it is smoother and more powerful

04-02-2007 Over year old.

dogg5306
Senior Heliman
Location: Brussels, Belgium

Quote
Comment to dogg5306, i suspect that the SZ is a slightly smoother engine to begin with???

It is said from the Cspec that it vibrates less than the SZ (if that's what you mean by being smooth) but the SZ is more powerful... should you decide to couple it with a Cline Reg and a Cline dual glow viperhead and you simply got the best (IMHO)... power, smoothness (from idle to full power), better sound, better cooling, better reliability, etc..., etc...

(That's why I've got one!!!)

MA Stratus
Avant Aurora
2nd Aurora (ordered)
Let's check that Vibe90SG

04-02-2007 Over year old.

HOMEPAGE

The Old Guy
Senior Heliman
Location: UK Surrey

Well guys
Have tried a SB18 on the Cspec still foaming
Fitted a "new"sz and the SB18 still foaming
Runout checked 0.0005

Started looking elsewhere???
Top bearing thet holds the top of the clutch cone apears to be a little "lumpy" so replacing that and the large lower one. See if that dose the trick

04-06-2007 Over year old.

HOMEPAGE

Dr Lodge
Elite Veteran
Location: Guildford, Surrey - UK

Could be the bearing, I'd say its definately a problem with the parts rotating at engine speed.

Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
Trex 500, Mini Titan, Gaui EP200

04-06-2007 Over year old.

BigChopper
Key Veteran
Location: Cambridge, UK

Foamy

did you fix it?

I found the Dyna can be a little sensitive to engine and clutch alignment... Jiggle the engine around in the mounts a bit .. you can also do this while it's running at idle to get the engine to settle perfectly with the clutch..

Cheers
andy

04-14-2007 Over year old.

HOMEPAGE

The Old Guy
Senior Heliman
Location: UK Surrey

Hi Andy
Fitted a new top bearing on the cone & took it for a test today.
Started the engine and!!!!! clutch draging.
Cursed, then loosend of the engine mounts & droped the engine a fraction, then took your advice and started the engine with mounts loose and niped them up whilst on tickover. stoped the engine and locktighted one by one. No clutch Drag
TEST 2 up to 1800 no foam at 1900 just a little but i will acept this and keep an eye on it, the last bit may go as the engine settles in and i lean it of a bit.
Thanks Ian

04-14-2007 Over year old.

HOMEPAGE

BigChopper
Key Veteran
Location: Cambridge, UK

good stuff

glad it helped..

U may find leaning might make it worse if you're not careful, but it can be a funny thing, sometimes not (mind you I'm running YS91)... what gear ratio are you running? 15th pinion?

Sometimes I found that the engine will need re-alignment after a few sessions of really hard 3D workout!

Happy landings!
Andy

04-14-2007 Over year old.

HOMEPAGE

Geekwave
Heliman
Location: Sweden/Ludvika

Hey

Got my dyna-x deluxe around 2 weeks ago

When im surfing around and try to get some info about this heli it seems like robbe/dyna is a dying machine..........is this the fact

Or can i be happy for a nice heli that gonna last/parts for a long time?

Best regards

Sweden

04-29-2007 Over year old.

RCMarket
Key Veteran
Location: Belgium , Europe

Parts

Geekwave
we supplied lately parts of Champion, and other helis which are 15 years ago.

EU law make sure that you have avaliability during 8 years of spare parts, and you still have 15 years of most parts in stock, i would say its a great support..

the world "Dying" is more for USA guys, they feel without official importer the bad taste of the situation, but we have many pilots over the world, and no one had to wait( except the shiping time) for parts.

Alex (Formerly Known as Futurac )

04-30-2007 Over year old.

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Robbe Cuatro - Millennium - Nova - Dyna-X > Dyna X

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