FoamCrusher

I make all the different packs fit in my Unicorn by using foam spacers. The battery bay is cut so the lightest pack balances the furthest forward and all of the others have their own spacers to get the CG correct.

The only pack that really fits in the Stryker without digging out too much foam is the Thunder Power narrow 12C max 2100 mAh 3S1P packs. All of the others require more or less surgery to fit, or require you leave off the middle or aft hatch cover.

The weights, all with female Dean's connectors, are as follows:

3S1P Thunder Power narrow 2100 mAh = 5.1 oz (you can put them as 3S2P in some planes, but not the Stryker) These are pushed hard by the APC 6 x 4 so stay off WOT.

10 cell packs of KAN 1050's = 8.1 oz Good packs, but a little weak at WOT at this voltage - They come out HOT.

3S1P Kokam SHD 20C 2100 mAh packs = 9.0 oz Hard to hurt but very $$$$$. I bought mine used but NIP for the same as the TP cells. I would not pay what Kokam is asking.

3S1P TrueRC 4000 mAh 5C packs. = 9.5 oz. Old technology but when they are this big they have lots of current ability and are cheap. Great duration for lazy flights.

10-cell packs of CBP-1400's (now replaced with 1650 at the same weight) 9.6 oz. The Unicorn pack for the Mega 16/15/4 and 6x4 prop. Not bad and are not too $$$ either.

12-cell packs of GP-1100's. = 10.4 oz. Modestly $$$ for their size, but man can they push the electrons. You cannot hurt these cells and they charge quicker than lipos.



Pick your voltage, duration and of course price.

FoamCrusher

DepronHog

I want to upgrade my PZ F27 stryker. Here's what the local hobbyshop recommends...
What do You guys think of This??

Motor Himax C2812-1200
Batteri ETEC 1250mAh 11.1V
Mottaker Schulze Alfa 435 4-channels
Regulator Phoenix 25A

alternatively,

Himax 2815-2000
Tp2100mAh 11.1V battery pack

Should I go for it?

DepronHog

Pyrock

DepronHog,

Obviously, your LHS sells Himax. If you do some research, you will find that the most reliable and most well balanced setup is as follows:

Mega 16/14/4
CC Pheonix 25 or 35
TP 3S 2100 mAh Lipo pack
HS 81 servos

I, and many others have tried a Mega 16/25/4, CC 35, TP 4S 2100 mAh w/ BEC Disabled. IMO, it was heavier than I liked and it hurt me at 5000+ elevation so I went back to the above system....much lighter although the bigger Mega setup is damn fast.

In the end, it's your call but I'm SURE you will be happy with the above setup...Good luck

FoamCrusher

Amen to that, but I would suggest the HS-56 as an alternative servo. The 81's are a little large and a bit heavy too. Even the common HS-55's will work, but the HS-56's have the much stronger Karbonite gears for those less the perfect landings. See www.servocity.com Of course, the HS-81MG (metal gears) are the way to go if you are really rough on the landings, but they are much more expensive.

FoamCrusher

DepronHog

Pyrock,
Thanks. What propeller would be the best choice for your setup.? I guess the limiting factor here would be the batteries (if you go for the Phoenix35) - which I guess would be 15-20 Amps...??

By the way, I have spent 1 1/2 years in Reno (student at UNR)....Lots of nice fields around for your Stryker...or what!! Here inTromsø, Norway
[link=http://www.lonelyplanet.com/mapshells/europe/norway/norway.htm]Map Here..[/link]

we still have a little snow left, but have been out "stryking" already....

DepronHog

DepronHog

Pyrock/FoamCrusher,

Would that be a Mega 16/15/4 instread og 16/14/4 - which I can't find.. typo?

DepronHog

Pyrock

Depron,

Yes, that would be a Mega 16/15/4. The only bad thing about Reno is the altitude but I dont know any better so I guess it's all relative.

Oh, and FoamCrusher is right, the if I can change one thing, I would go with the HS55's or HS56's. The HS81's are a bit overkill for this application unless you were doing 100+ dives in which case, the HS56's should still do ok. I did it mainly for the fit...the HS81's were nice and snug and didn't require any glue, just cram it in there and it will stay put.

tusk91

Here is my Brushless Stryker set up.

"Align" 400L motor
"Align" 25 amp ESC
Apogee 11.1V 2170 mAh 3 Cell Battery
5.7 X 3 Prop

She's fast but, with the smaller Prop the engine stays cool enough so I don't even need a heat sink. The paint scheme is modeled after a ProJeti I saw when online.

DepronHog

Nice paintjob..

Seems to me that 6X3 and 6X3,5 propellers are common for some of the custom Strykers out there..
Have also seen a setup with 16/15/4 and 6X5,5 prop..
On the Mega motor site they recommend 6X4 aor 6,5 X4 propellers for small and fast models, up to 800 grams...
Maybe I'll just buy propellers in the range 6X3...5,5 ore something like that.....
DepronHog

fmtc

has anyone here used a multiplex 6d,cc35 and 4s kokam 15c cells.and if so what prop would you recomend?

Glacier Girl

My Feedback: (4)

Latest "sleeper" version, THUMPER. To those who don't come from a racing backround, a sleeper is a stock bodied vehicle with a BIG HAMMER under the hood, so to say.
Thumper's specs, Mega 16/25/4, CC35, Ultimate UBEC, Futaba 4 ch Rx with case removed,
APC 8X6, PolyQuest 4S3100, Hitec 81MG servos. All out weight 26.45 oz, thrust is 51.14 Oz.
Even managed to squeeze Mega in stock mount. To keep total stock look, I cut and built a hinged 1 piece front hatch. This bird does not need a launch, just hold up and hit the go stick.
Out of sight in the blink of an eye. Time to go hunting! LOL

Smooth Spanky

Plane looks great, Glacier Girl. I've heard other people mention a "UBEC"....will you humor a newb and explain what it is and why it is needed????

Thanks.

drwadley

Does anyone know how the ALIGN 2500KV brushless motor compares with the Mega 16/15/4? It's about half the cost and I'm on a tight budget, but have had enough with the stock setup. I've been running mine with 10 cell Nimh and have finally blown the motor. Looking to upgrade.

Glacier Girl

My Feedback: (4)

richieklop,
A UBEC is used when the load is too much for the built in BEC (battery eliminator circuit), in the ESC(electronic speed control). Too much load can come from running too many servos, or in my case too many volts. It takes the place of the built in unit, and it can handle the higher voltages.

drwadley,
The Align is great step up past the stock motor. I know money's tight, but plan for the future when you buy equipment. Don't forget, you'll have to buy all new electrics to run brushless. Come over to the DARK SIDE. The Stryker forum is for newbies and the elders. The Mega is for when you want to go all out, speed/thrust wise.

tusk91

Well there are a few brushless strykers now where I fly and the fastest setup so far is the Align 2500KV setup. It was my first introduction to brushless motors in fact. I saved by buying the Align motor and speed controller combo, less than $90. I don't think you will be complaining about speed at all with an Align motor. The Align speed controller is a great buy as well because it has some really nice features i.e. it'll beep when you cut your radio off, you use this in case you loose your aircraft and need to find it in the woods or tall grass. See the pics of my checkered Stryker with the align setup a few post back.

My setup:

"Align" 400L motor
"Align" 25 amp ESC
Apogee 11.1V 2170 mAh 3 Cell Battery
5.7 X 3 Prop

bhouckzz

My Feedback: (1)

i put together my brushless stryker today and took it for a fly, it flys ok but still a little slow.
Iam running the following setup..

BP12 outrunner 8x4 prop 18A esc.
Hitec rx/tx 380 mg's
11.1 1000 mah battery

I think i need a lttle more rpm, the plane flys good with lots of pull, but still pretty slow i think.
Any prop suggestions for the above setup ?

Glacier Girl

My Feedback: (4)

bhoukzz,
Check with Cadetman on the Stryker forum in the parkflyer's section. He's running the Bp21. And has prop pretty well figured out. Also a 3 cell 1000 mah may be running out of capacity on that set up .

priscalex.

nice!

jattamasso

just have setup a Stryker with a SF brushless outrunner motor. the motor is made in taiwan so perspectives not very high. right now i am wayting for a 11.1V 2200mAh lipo. i have a Multiplex sensorless controller 27Amps[>:] i was running great the stock stryker, until read this forum... just bought an Optic 6 too...[img][/img] wat do you think about my specs??
SF outrunner brushless motor 6 pole 3000rpm/V Multiplex BL27 ESC 11.1/2200 lipo batt.

woodduck-RCU

I have almost the same setup as Pyrock but with a couple of minor exceptions.

1. I expoxied .057 x .177 flat carbon fiber to the trailing edges which stiffens the wing, adds less than .5 oz and make a world of
difference in a full speed dive, no loss of control. http://www.allerc.com/product_info.p...oducts_id=1444

2. Futaba S3102 servos , same size as HS 81 but with 64 oz of torque at 6.0 volts!

I have tried several motors, Multiplex 480 6d, Align 400L , Mega 16/15/3 and S, RCER Warp 4 ,but am sticking with the Mega 16/15/4.

The Mega 16/15/4 has great speed and flight time.

Wood Duck

SaulOhio

I'm a newbie here with the Stryker. Just bought a bare fuse and some parts. I'm planning on starting with a regular 480 motor I got from another plane (which I put a brushless into), but eventually I want to go brushless with it, maybe an outrunner.

My question is, what kind of tape do you use to hinge the elevons with? Is duct tape or clear packing tape good enough, or do I have to get something special from the hobby shop?

Glacier Girl

My Feedback: (4)

Regular old clear packing tape works well. When you step up the speed you might want to consider adding hinges instead.

SaulOhio

I decided to go with the plastic hinges. The packing tape came off too easily, taking the paint job with it. Now its done, except for the canopy and battery hatch covers and the motor mount, which are arriving in the mail in 2-3 business days. The local shop didn't have those parts.

SaulOhio

I just had my maiden flight yesterday, and it flew very nicely. I'm fairly eager to get a brushless into this bird.

Had anyone put a ducted fan into one of these? I have one coming in the mail, which I intended for something else, but changed my mind on that. How would it work on the F27?

Glacier Girl

My Feedback: (4)

There have been a few on the other site E-zone that attempted this. One that was putting out over 1000 watts of power. As of yet, I've not seen a successful version. But there's always hope.
Please forgive me if you already know this, but a fan unit has to spool up to give you power. That lag between stick movement and bird response could be a killer, vs the nearly instantanious response you get from a prop driven one.

Nice bird you built, check out my gallery for mine.