Upgrading to Raptor 30 v2 to raptor 50 engine

[jwmachon]

Hi,

Whats the min i need to convert raptor 30 v2 to raptor 50.

Obviously i need engine but what else??


Thanks,

Jonny

[0h5h1t]

boom, belt, engine, engine mount, clutch hub (i think) and blades. boom supports i guess too as the 30 ones may be too short. someone else will no doubt clarify these as i have not actually done this.

[Aidi]

Boom and Main gear and 600mm blades. Thats pretty much it.

[Nightlore]

You will Need a 50 size engine mount and fan/clutch a 10 tooth pinion and 85 tooth main gear and tail belt pully if you want a constant drive tail and then you need a longer boom (Titan Boom if you want to run 620mm blades) longer tail drive belt dont forget its a titan belt if you get the titan boom. bigger tail blades and main blades plus if your running standard servos get some digtal ones in it.

[Steve]

And a muffler - that's another chunk of cash!

[trillian]

There are stages you can do if you want;

The very first stange to putting in a 50 engine is the engine mount and fan/hub because the 30 fan will not fit on the 50 engine (although I suppose for sake of argument it could be bored out to fit over the bottom of the 50 engine shaft).

So broken down it is;

1. Engine only (fan/hub and mount). With just the engine alone changed the heli will fly but will be running at a lower headspeed than you really need and the engine will not be utilising it's power and torque. If you fly it this way be very mindful of over-speeding the engine and adjust the throttle curves to make sure you keep engine revs where they should be
(the OS 50 runs at about 2000 rpm less than the 32 or 37 to develop max power). You'll prob also need a wider pitch range on the blades to keep the engine loaded properly.

2. Change to the 50 gearing 10/85. At this point you'll have decent headspeed and less tendency for over-revving the engine.


3. Add a longer boom, belt and main blades (the tail blades and boom supports can stay the same). At this point you'll have more lift and stability from the bigger blades and can fully take advantage of the power of the 50 engine.


I have a Raptor that started life as a 50 but I have an OS46 in it at present and kept the 50 gearing but have fitted 550mm blades and this suits the 46 very well. It has more power than the 37 but not near as much as the 50 hyper (but burns much less fuel than the 50).

[jwmachon]

thanks what about auto rotation gear

Thanks

[trillian]

thanks what about auto rotation gear

Thanks

That's another option. The 30 has the red gear and the tail is not driven. You can auto but won't be able to steer the tail with the rudder (can still steer the heli with cyclics obviously).

Changing to the white gear used by the Raptor 50 will give you a driven tail when doing autos.

[Si Goodchild]

Mate, seriously, don't bother. It just doesn't make economic sense because you end up pretty much binning blades, engine, muffler, maingear, pinion, belt, engine mount, tail boom, boom supports plus a few other bits. There's practically no second hand value in those parts, especially the engine/mount. The only people likely to buy a secondhand 30 engine are those who've blown theirs and don't fancy the cost of a new piston/liner/ring. The cost of the upgrade has got to be around £300.

Surely your best bet is to sell your 30 as it stands and buy a good second hand 50, the difference in buying and selling cost is gonna be a lot more affordable.

Si

[Birdie4x4]

I have done it in stages, slowly built up the spares I needed and taken it from there.
First I fitted the engine, engine mount and fan, no other changes and it runs great. Ran it like that until the next crash, then fitted the longer boom and belt still using the 550 blades,still ran great. Now after another incident I have fitted the gears and 600 mm blades.
What I am saying is it does not need to be so expensive if you do it in stages.
Most of the spares can be picked up second hand of this site and others.

[Birdie4x4]

thanks what about auto rotation gear

Thanks

Although the red gear wont let you steer the tail it will hold the head speed a lot longer.
Try spinning the blades (when stationary) by hand and see how much longer the none driven blades spin.

[shikari_chaos]

Hey this might help giving a good comparison of the different Versions:
raptor_50_comparison.pdf

[trillian]

Although the red gear wont let you steer the tail it will hold the head speed a lot longer.
Try spinning the blades (when stationary) by hand and see how much longer the none driven blades spin.

Yeah, I think this may be why they do the Raptor 30 that way as you won't have as much inertia with 550s and you will with 600's.

The rotor can just spin for ages freewheeling like that.

But there's a big difference in weight between woodies and various carbon blades and I have sets of 550 carbons that are heavier than 600 woodies.

[jwmachon]

thanks guys right on my 30 i have the auto white gear does that mean i wont need a auto gear

Thanks

[GravityKills]

>> It just doesn't make economic sense
that's what I also thought.

Actually a .30 can be a very useful heli because it is so fuel efficient. I fly a .30 electric myself most of the time, on lowest possible headspeed to get more flight time. For example, a (piro)flip from normal to inverted or back takes almost two seconds, and I practise a lot this way.
With that in mind and the low cost of a new Raptor .50, I'd rather save a bit more money and get a completely separate .50 heli. It shouldn't be hard to find a second hand .50 engine and muffler now that .55 / .56 are the rage.
My plan would be to keep the .30, move the electronics into the new heli, and re-build the .30 as you get the parts cheaply.
It depends on the way you fly - for some people it's completely unthinkable to fly with an underpowered heli, others spend too much money on fuel.