Help on Stratus setup, nitro in general [Archive]

CatchmyCorsair

04-08-2008, 07:54 PM

I've been an electric guy since getting into the hobby about 4 years ago. I'm thinking about getting a Stratus eventually and wanted some advice on a setup for mild 3D. (still a little unsure about it)

What engine? Pumped or non-pumped? The YS seems much cheaper. And are there any good servos under $100 each? I was looking at the futaba BLS451.

Also, any tips for a nitro/MA noob would be appreciated.
A list of tools would also help, even the small things I have no clue about. (besides the basic heli tools)

Thanks for the help.

Caleb Phillips

04-08-2008, 08:36 PM

I run an O.S. SZ non-pumped with the Hatori S.B. 18 and the power is unbelievable.

As far as mild 3d, get a Stratus with the 8.18 gear ratio and a Tempest FAI head. This will be by far the smoothest helicopter you can imagine. If you hop on Ricks, you can get the 8717's for 99.99 a piece (I just did). From what I heard, the YS SR is a really good engine and works well on the 8.18 ratio. I'd either go with that or maybe even the new O.S. if it's out in time.

Remember, you want it for mild 3D now, but eventually, you'll want something a little faster. So it wouldn't hurt to just get the stock Stratus and run it at 1800 rpm on the head. That way, when you want something a bit crazier, you can up the rpm and change some head ratios. Before long, I'll get a video posted showing how a Stratus can be just as tame or as wild as you want it; but for now, you'll just have to trust me.

As far as tools, I can give you a pretty nice list whenever you're ready. There's a few things you'll need for the Stratus that's specific to that helicopter. One of those being a dial indicator. Other than the tools, just make sure you have some glow plugs at all times, a nice starter (preferably a Sullivan Ultra Tork), and a glow igniter.

Laurens

04-09-2008, 06:31 PM

I second the non-pumped OS, its a lot easier. I use BLS 451 on my R90 and 9351 on my Fury, can't tell the difference yet.

ATLProfessor

04-10-2008, 08:01 PM

I run the OS .91 SZ with the os pump and reg. It makes great power and isn't very picky.Also, I run the BLS451's. I agree with Caleb, you can set up the stratus very tame or aggressive. You will not be dissapointed. The best piece of advice is take your time, and if you have any questions just post it or call MA direct.

chopperben1

04-11-2008, 07:53 AM

I just finished my BW Stratus (first nitro build after owning only electrics). Here are some pictures of the tools and some other things I needed for the Stratus that I never needed for the electrics:

Dial indicator
Table vice
small "reverse" pliers with pin tips
clearcoat for the canopy
Dremel
...etc...

Good luck

- Ben

CatchmyCorsair

04-11-2008, 07:07 PM

Thanks guys. Chopperben, have you flown it yet? What are your impressions of nitro? Being a previous e-guy like me.

I've had my heart set on an E-heli for months and now I want both.

Looks like I only need the dial gage and balancer.

I said "mild 3D" because that's the stage I'm at now, with a twitchy, underpowered 450. But with a 90 I think I could ring it out pretty good. (and actually SEE it) :)

And I noticed the YS is significantly cheaper than the non-pumped OS. I'd rather go that route unless I'll need to take advantage of good parts support. (I hear YS isn't too good with parts)

And what's a good regulator for Spektrum? (reliable!) And I like the Align 2in1 with the glow ignitor. Any other regulators do that?

Caleb, I was thinking Bobby Watts version, 8.18 (?). I want a full 3D head, not an FAI head and I'm leaning towards the YS91SR.

chopperben1

04-11-2008, 07:42 PM

Sorry I can't answer your question about the regulator. Here is a picture of mine...it is a Reactor.

I live up in Canada and I haven't flown yet this year...the snow is still melting. Should only be another week or so!!!

The Stratus was a lot of fun to build. Much more challenging that the electrics, and hopefully a lot more rewarding too!

Have fun,

Ben

CatchmyCorsair

04-12-2008, 12:37 AM

After researching all night, this is what I've come up with:
Pick it apart.

BW Stratus
YS 91SR
MP5 90 (cheaper than Hatori)
3x BLS451
JR 8900 tail (b/c it's cheaper than the BLS251)
Radix 710 (maybe SB's?)
KB tail blades
9650 or 3500G throttle
Multigov (just picked it)
Spartan DS760 (if I can find one)
2s Evolite 2500
Regulator?

Laurens

04-12-2008, 06:30 AM

If I would buy again it would be:

ATG
SolidG
Radix 710
Stubz
Radix 105

CatchmyCorsair

04-12-2008, 11:08 PM

Well I'm joining the MA club soon.
I'll be ordering the Stratus as soon as Heliproz South gets back to me about stock status. :thumbup:
I also found a Spartan in stock. Lucky me! :cheers

Time to read the manual.

Caleb Phillips

04-12-2008, 11:34 PM

Congratulations on the decision! You're gonna love it. Just make sure to take you're time no the build and clean all your parts in alcohol and dry them thoroughly before you use loctite.

Post back if you have any questions regarding the build. But I must forewarn you, don't build the tail control rod until you know what length to cut it. The carbon rod supplied is a bit longer than what is required and a bunch of people realize this too late. Don't forget that on top of all the things you've listed, you'll need two servo extensions as well.

As far as a regulator, the Arizona regulator is very popular among the 90 guys. I haven't used it personally, but I've heard only good things.

WillJames

04-12-2008, 11:41 PM

You will need a set of C clip pliers as the Stratus has a clipped in spindle or at least the last one I had did.

You may also want some of the Black CA for all the screws/balls that go into plastic. Do not over tighten them and the plastic parts last until destroyed in a crash.

Have fun!! :thumbup:

Caleb Phillips

04-12-2008, 11:55 PM

You will need a set of C clip pliers as the Stratus has a clipped in spindle or at least the last one I had did.

Post number 5 ;)

You may also want some of the Black CA for all the screws/balls that go into plastic. Do not over tighten them and the plastic parts last until destroyed in a crash.

Have fun!! :thumbup:

This is a very good tip as a bunch of people don't know this or forget it.

CatchmyCorsair

04-13-2008, 12:09 AM

I'm going out tomorrow to gather the tools. I don't have proper allen or nut drivers, so it won't be a cheap adventure. :shock:

Anyone know who carries triflow locally? I thought I read bike shops carry it. Or will a generic multipurpose oil work on the clutch?

And I have to say, the manual is amazing! What do you guys use to lock the crank? I see there's a $15 tool. What else can I use?

Also, manual mentions a one way valve for the YS engine. Is it a YS part?

Caleb, I have plenty of time to build. I'm on Co-op and nights get boring.
Again, thanks for the help everyone!

Caleb Phillips

04-13-2008, 12:23 AM

I know you can get triflow through MA and heliproz as well. You may also want to consider getting a fan puller. This will make dial indicating much easier if you have to redo it.

If you don't want to get the crank lock, you might can get away with jamming a tooth brush into the carb inlet and locking the crank that way but then you run the risk of getting debris in the engine. The best solution is going to be the crank lock though.

Make sure you get a good set of hex drivers like the century ones.
http://www.centuryheli.com/products/productdetail.htm?currentid=456&prtnm=CN2017

Quick question though, have you thought about 8717's? I've just put a set in my Stratus and they rock! They can also be had for $99.99 a piece.

WillJames

04-13-2008, 12:23 AM

Ron's HeliProz South has Tri-Flo.

Get the fan puller, good thought Caleb. It makes it so you don't tweak your fan when you take it off the crank. Sometimes when you dial indicate it you have to remove the fan and start over. It is very important to get the fan as close as possible to keep vibs down to a minimum.

CatchmyCorsair

04-13-2008, 12:29 AM

Quick question though, have you thought about 8717's? I've just put a set in my Stratus and they rock! They can also be had for $99.99 a piece.

I have, and still might go that route. I'll be buying the kit/engine first then slowly gathering electronics.

I'm 95% sure on the YS, a few shops seem to carry parts.

stmpngrnd

04-13-2008, 12:58 AM

take off the head and place a coil of fuel tubing on top of the cylinder...put the head back on...there you have a cheap and damage free cam lock. Just remember to take the fuel tubing out !

CatchmyCorsair

04-13-2008, 06:36 PM

What starter adapter (if not included) do I need as well as what extension? I want a one-way in it, right?

And do you recommend a remote glow plug igniter that taps the Rx battery, or an external glow igniter?

Caleb Phillips

04-13-2008, 06:54 PM

CatchmyCorsair

04-13-2008, 07:04 PM

Go for the proflex. This is the best option especially since you're not running other nitro helis and since the Stratus was designed to use this wand. This does have a one way in it by the way.
http://www.ronlund.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=heli&Product_Code=MA4684&Category_Code=1STARTER_EXTENSIONS

For whatever reason, I've never gotten a glow extension to last more than 10 or so flights before breaking. I recommend an external igniter. I know a good number of the MA guys are using the radio south driver although I do use a much cheaper alternative.
http://www.ronlund.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=heli&Product_Code=RAD3200&Category_Code=

Holy crap man! I need things to be CHEAP! :)

I thought I could get an extension for $15!

I need the cheaper igniter alternative, how about those brackets that mount the igniter plug (not the glow plug) on the side behind the canopy?

I think I'd rather have a more common adapter if I need to use someone's starter.
Is it blasphemy to use the Align 2in1? Or are they crap?

WillJames

04-13-2008, 07:15 PM

Do a 6m hex adapter. You can start your heli with anyone at the fields starter. Proflex is MA only and unless you fly with a lot of MA pilots (doubtful) you will be doing yourself a disservice to go with the MA only option.

jmho

Caleb Phillips

04-13-2008, 07:27 PM

Holy crap man! I need things to be CHEAP! :)

I thought I could get an extension for $15!

I need the cheaper igniter alternative, how about those brackets that mount the igniter plug (not the glow plug) on the side behind the canopy?

I think I'd rather have a more common adapter if I need to use someone's starter.
Is it blasphemy to use the Align 2in1? Or are they crap?

I know Bobby uses a switch glow and it appears to work. Go ahead and try the Align one since it is cheap. By the way, the Radio South Driver is a glow igniter, not an extension. With the Stratus, you're going to need either a standard igniter like this:
http://www.rcplanet.com/Glow_Plug_Ignitor_s/869.htm

with an extension like this (which will not last long by the way):
http://www.ronlund.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=heli&Product_Code=ACETTR3803&Category_Code=Remote_Adapters

or the radio south glow igniter I posted already
or a switch glo (or something similar).

DavidH

04-13-2008, 09:35 PM

If you want to go the least expensive route for a glow plug igniter.
Get a D Cell Akaline battery. Connect you a wire to each end with an alligator style clip on it. Hook one clip to tip of glow plug, other clip grounded on engine. Will work as good as anything else.

You can get this to hold the battery. Then all you need is to solder a wire and alligator clip on each wire coming out of the holder.
http://www.radioshack.com/product/index.jsp?productId=2062249&cp=&sr=1&origkw=battery+holder&kw=battery+holder&parentPage=search

Carry a spare D battery in your flight box. Just swap it out when needed.

Put a hex adapter on the clutch start shaft. Then you can get a hex start shaft for your starter. The majority of nitro helis use hex starter systems

David

Whole setup like about will be maybe $3 for the glow plug igniter