55 Class Engine Warning

[Steve]

Just found this on Ripmax's website - Notice for using the OS 55HZ Hyper and YS 56 SR engines in the Sceadu SDX

This is of course aimed at the Sceadu SDX, and could be contrived as a wheeze to get us mere mortals to buy more product, but none-the-less I suppose there is some common sense in the advice, and maybe the same principles could be applied to all the other 50 size helis out there?

[Bigbellypopper]

Crikey did you see the price of that main gear????? - £40!

[Tosh]

What they are saying is that the Hirobo Sceadu SDX is not up to the job.

[3d_willz]

Crikey did you see the price of that main gear????? - £40!

lol i used to fly hirobo helis and boy they are nice peices of kit but the repair bill was a bit much for me main gears where a bit pricey

[Steve]

What they are saying is that the Hirobo Sceadu SDX is not up to the job.

I think it's more likely to be a sales line to get us to buy more Hirobo products, over and above the standard kit. The hardened Jesus bolt might be a sensible upgrade. Not so sure about the rest of the advice tho.

But Hirobo aside, the theory could also be applied to all other models in this class, if you wanted it to.

[ChrisB]

What they are saying is that the Hirobo Sceadu SDX is not up to the job.

It looks to me like they are saying the stock SDX cannot take the power of a 55 so it needs upgrading first.

[robgt]

What they are saying is a load of nonsense!

The only thing that could be sense in there is using a stronger main gear on the Sceadu SDX - nothing else has changed from what we're doing/using currently.

Same headspeed, same helicopter weight, etc.

Muppets

Cheers,
Rob

[Andy from Sandy]

The standard gears on the SDX are a very hard plastic. Being so hard it does wear. It is easy to spot as the teeth go to sharp points. I think it can take the power but it is going to wear sooner. I would suggest flying with it and see how you go. That main gear is £5.50 to replace.

If you feel the urge to get the delrin gears then find a few other people also looking to purchase Hirobo spares and place a big order with rc power supply. Or wait until you can place a biggish order yourself. Their shipping cost is quite high initially.

If you are a bit of a stick banger I would suggest you get the hardened drag bolts for the main blades as standard bolts bend. http://www.rcpowersupply.com/product...&cat=48&page=4

http://www.runryder.com/helicopter/t531014p1/


I do have the delrin gear set though from a Sceadu. After countless flights it still looks brand new. It is a nice upgrade as delrin is much quieter than plastic.

[Steve]

I do have the delrin gear set though from a Sceadu. After countless flights it still looks brand new. It is a nice upgrade as delrin is much quieter than plastic.

Agreed. My friend has the delrin gear in his Sceadu Evo and it is good for sure.

[electricsceadu]

if you also look at the freya the 60 uses a std plastic gear and the 90 runs a delrin gear
my freya 60 kit is running the plastic gear with an os 91 szh pump in it and no gear problems (its a pity align didn't take note with the 700 with gear quality)
and as andy has said the plastic gear has worn but not failed and as a precation i change the gear every 2 or 3 years on its anual service

my non-evo sceadu is still running its first 50 main gear (it was a 30 but now has the 50 driven tail system on it for the past 7 1/2 years) the gear teeth are worn but i adjusted the tail gear mesh and no noise
before anyone asks how you get the gear to adjust you slacken the bearing block mounting bolts and push the gears about to get the best mesh, adjustment is only the clearance in the bolt holes (a couple of mm at most)


although i have the delrin sceadu/sdx gear that i've never used yet i'll be happy to slot an os55 or ys56 into my sdx with the std main gear

steve if you adjust the tail take off gear the plastic main gear can be quite quiet in operation if adjusted enough

[Tosh]

What they are saying is a load of nonsense!

The only thing that could be sense in there is using a stronger main gear on the Sceadu SDX - nothing else has changed from what we're doing/using currently.

Same headspeed, same helicopter weight, etc.

Muppets

Cheers,
Rob

Couldn`t ageree more, how long have we been putting 90s in 50 models?

[The Liquid King]

Its just to cover their ass, incase someone takes legal action, , They have made you aware of the potential problems..... so when something happens dont try blaming anyone cause you won't recieve a refund for any damaged parts and no free spares either.Having read it twice I would say its not bad advice, you will find out if its necessary when you replace your os 50 hyper with either one, although having written this how many people actually have one of these helis, not that popular?

[electricsceadu]

i have a sdx50 but until i need another engine the 50 hypers staying in it
i already run the hardened blade bolts so that ones covered if i do go for one of the new generation 50 class motors

there are a couple more on here with the sdx50 and i do know of a sceadu that is getting the turbulence head and tail fitted to it so it will be near enough a sdx by the time its finished