Hagar69

80 mph does not neccesarily have to cost a fortune.
I'm quite sure that mine does more than 80 mph. I have been flying BP-21 on 4S LIPO, but current setup is much more powerful.

I have:
Stock Stryker with everything: USD 169,-
Replaced fuse: USD 19,-
PowerZone board to make stock RX power a standard ESC, USD 29,-
2409-12T Motor 220 Watts++ USD 15,-
TowerPro 30A ESC USD 25,-
7x7.5 propeller USD 3,-
2100 mAh 10C LIPO, USD 34,-
New elevons and vertical fins made of balsa an covered with Oracover, USD 5,-

Total cost: Less than USD 300,-
Well, you need a LIPO charger as well, but that could be covered on a different budget

And for this price you also get unlimited verticals, just keep in mind that a 10C LIPO is not quite enough, needs throttle management (very hard to do due to need for speed). That's why a 20C LIPO is on the way to my mailbox.......

Hagar

wo23dodge

where did you find these at for those prices in USD? I found that motor at one place for $52 shipped,far cry from $15.

maiden-crash

Ok...
so it sounds like I'll be broke in about...
A few minutes after getting the plane[sm=tired.gif]

Which Im getting in.... 2days!!!

Hagar69

Motor and ESC can be found here:
[link=http://www.aero-nuts.com/product_info.php?cPath=37_77&products_id=198]Aero Nuts[/link]

Hagar

saabguyspg

Oh my word!!!! so I am the new guy here... I was awaiting word on some parts I had sent back to Midland Model centre here in the UK..... now I liked these guys before this but they not only replaced my parts but went FAAAAAAAAAAAAAAAAR beyond that. To say that these guys stand behind what they sell and are ready to make you a happy customer is an understatement. Anyway I won't go into details so that people don't expect this from them all the time (they would go broke) but lets just say that gestures like this make people customers for life.

Now.... I will order the stryker body replacement in the next week or two (mmmm I wonder who I will order that from ha ha)..... I I will be kitted out for action from world war two and the F27!!!!

See ya guys!
Ps does anyone fly in the woolwich area of London? We go to woolwich common once or more per week.

critterhunter

This has been covered countless times but for the newbies wanting to go darkside cheap here is what most of us are using...

BP21+BP30 speed control (around $50 from Balsa Products, cheaper from others but with a lower amp speed control), 7x6 APC Slow Flyer Prop ($3), Two HS81 servos ( $15 per. Or the HS81MG metal gear ones if you really want a bullet proof servo), Any good FULL RANGE RX (Don't skimp on this....A brushless Stryker can quickly get out of range. I prefer the JR Sport line...$45), A radio with dual rates and v-tail (delta wing) ability (JR Sport600sx computer radio comes with a RX you can use for $159), Lipo Batteries...10C, 2000ma, 3 cell ($25 to $45, or pay more if you prefer "brand" names. Check out Common Sense RC or Dymond Motorsports for cheap but good batteries), Celectra 1 to 3 cell lipo charger (Or any you prefer...A basic unit will cost about $35 to $45), Stryker Body ($20), stock motor mount ($4), Fins ($4), 3 piece hatch set ($7), 27B flaps ($7, comes with hinges), two carbon rods for nose to tail and wing tip to tip ($5 per), Extreme strapping tape ($8), Clear tape ($4), A few magnets to hold the hatch/nose on ($4). And, the feeling you'll get when you fly this thing...PRICELESS!

maxamus

hi guys

quick question


set up stryker

mega 16/15/4
hyperion titan 30 amp esc
6x4 apc prop

looking at some li-po battries what should i be looking for with this set up rate wise min and max discharge ect
my view is about a 2100/2200 mah 11.1v 10c to 20 c rate should i be looking in this range or am i gonna fry my esc and motor like bacon if someone could give me a range from the lowest to the max within the safe range for my set up i'd be v.greatful


thanks in advance.....................MAXAMUS

and remember god invented epp for the stryker brushless

chippedprop

Hey all
It's been a while I have posted. I have been busy. I have joined the local RC club Spartanburg Sky Knights ( Cadetman will like the name). I'm still flying the mod. BL Styker. I will be flying and be representing you guys at the Foam Fly In at the Sky Knights field this Sat. I'm taking 3 planes- the BL Stryker--the Brushed Styker trainer--and my lastest a mod. Hobbyzone Firebird. I ripped out the stock 27 mhz stuff and replaced with reg. 72 fm gear i already on hand 2-electrifly 5 ch esc and rec. combo --2 hitec-55's-- changed the v tail to a T tail so I can play around with a rudder--upgraded to 9 cell batt. This plane came with a 480 motor and I dropped in a water broken in 480 Stryker motor.
I can putt or do loops with it. I think I will try a bp-21 BL on it. So far it's a lot of fun.
I did go to the Joe Nall fly in and saw so really cool stuff. The best part was on Thursday after the AMA meeting. Alot of foames came out and flying insued. Oh did I mention that supper was beer and dogs. The flying was really interesting as darkness closed in. One guy had a homemade VTOL. We named it Fedx as it was an x with 4 hs-55's --BL motor etc. He could hover around thru the crowd and catch the plane in his hand. It was a laugh a minute. The quote of the night was," nothing like getting liquored up and flying foamies". Cadet and Glacier you were missed !!!!
Chippedprop

Glacier Girl

My Feedback: (4)

maxamus,
A10c pack would be the bare minimum. 20c would be much better. Other then that your are good to go.





Chipped,
I got stuck on the Amtrack power outage. Was going to run back up from Gainsville, Florida after delivering a car. Ended up riding the train for 24 1/2 hours one way. [:@]
You know there is not a lot to do on a train when there is no power.

sjchmura

Can someone explain the main differences between a "slowflyer" APC 7x6 and the regular APCe 7x6 prop?? My local shop only has 8x6 Slowflyers - that may be fast with my BP 21

Also a few threads back people were talking about a cheap alternative with MORE power then BP-21 - which engine is that?

fiver

2409-12T has more juice...I ordered mine last week from aero-nuts and am anxiously awaiting it's arrival.

wo23dodge

Thank you,I didn't come up with them on my google search.

One more question,on that page it shows a special offer,3 towerpro SG90 micro servos for $20,I've seen mention of getting other servos? $20 sounds cheap to me,should I go ahead and get them for back up?

Gandalfg77

Hey all,

Looking at doing a cheap plane, the bp21 seems to be the way to keep prices down. I have found a few similar motors here in Oz on Ebay, can someone have a look and let me know if these are the same or similar.

http://cgi.ebay.com.au/Outrunner-Bru...QQcmdZViewItem

http://cgi.ebay.com.au/2410-Outrunne...QQcmdZViewItem

Regards

Paul.

Hagar69

wo23dodge,
I have a couple of the SG90 servos, but have not tried them yet. The spec looks good with quite high torque. I also got replacement gears for them just in case, was very cheap.
Servos look OK and seems to be well made.


Gandalfg77.
The first motor you are linking to is a lower RPM motor, (kV1250) than BP-21 and 2409-12T. It gives good thrust, but not so much speed. I would rather get the BP-21 (2408-21) or the 2410-12T. The other one could be same motor as the first one. Website says kV=2410, sounds a bit high for a max 15A motor. Do not know if these numbers can be thrusted.

I think you are better off getting the combo from Aero-Nuts. Either 2408-21 or 2409-12 + 30Amp ESC, 3 props and connectors are available for USD 45 and that includes free shipping. I have ordered several times from him, and have been very happy with the services. Usaually the package arrives after about a week, that is not bad from Hong-Kong to Norway.

Hagar

Hagar69

Maxamus,
You can never get too much power in a battery-pack. Higher mAh numbers and higher C-ratings are allways better.

You have to start looking at the motor and prop you will be using as they will determine how much current can be drawn at any given voltage. Then you have to decide on the maximum voltage (number of LIPO cells). Let's just assume 3S LIPO here as it is the most common setup.

If you motor is capable of pulling 30 Amps, then you should select a prop that will not make the motor draw more than 30 amps at 11.1 Volts.

Now your ESC should be capable of handling at least 30 amps, preferrably a little more as it is not good to operate electronics at its maximum stated specs.
Using a bigger ESC is never a problem, it will just add more weight. But if you throw in a 20Amp ESC it will be fryed.

Battery pack: In our example we expect to be drawing up to 30 Amps, this means that the battery must be capable of delivering this. A 10C 2100 mAh battery can deliver only 21 Amps continously, so it would most likely get toasted after some sustained WOT flying. A 15C 2200 mAh pack can deliver 33 amps continously (15*2200/1000).
I just ordered a 20C 1700 mAh pack for my 2409-12T powered Stryker, it can deliver 34Amps continously. But since it is only 1700 mAh it will be drained quicker than a higher mAh rated pack.

However it is never a good idea to select a battery pack that just matches the requirement, it is better to use only 80% of the rated current as this will make your packs last much longer. So if you actullay plan on pullin 30 amps or more from the setup you should go for a 20C 2100 or 2200 mAh pack.

Hope this was clarifying.

Hagar

Gandalfg77

Hagar,

Thanks for the reply, have you used both motors? I am currently running a himax 2000kv which gives me very nice vertical, how do these 2 compare to that?

Regards

Paul.

Hagar69

Gandalfg77,
I have used both motors, they are both good. But very different. The 2408-21 (BP-21) with 7x6 is quite fast, does not draw too much current (around 15 Amps). Vertical performance is not great, but OK. The 2409-12T really rocks. Insane speed and vertical performance with 7x7 prop, probably draws around 25-30 amps on a 3S LIPO.
Both setups also works very well with a 9 cell NIMH, however the 9 cell pack is a bit heavy for the BP-21, but it is really good to have that weight when flying in strong winds.

With this setup I can do unlimited verticals and roll like crazy while going straight up

Do not know your HiMax but would imagine that it gives a little higher speed and less vertical performance than the 2409-12T. Which prop do you run on the HiMax?

Hagar

Gandalfg77

Hagar,

I run a 6x4 apc. Thanks for all the info, I think I will get one of the 2409-12T, sounds great.

Regards

Paul.

Hagar69

Paul,
Actually I think you will see both speed and thrust improvements wiht the 2409-12T.

Some simple math gives:
Himax kv2000 should give 20000 rpm at 10 Volts, with 6x4 prop you have 4 inches of forward movement on each rev. This gives a speed of 122 km/h
2409-12T kv 1570 should give 15700 rpms at 10 volts, 7x7 prop means 7 inches of travel per rev. Speed is now 167 km/h

Of course I'm over-simplifying, we need to consider drag an propeller efficiency etc. But still we can clearly see that the 2409-12T is capable of very high speeds. And it takes my 580 gram (with 3S LIPO) Stryker straight up. I can go up and almost loose it out of sight in only a few seconds

I have a lot of fun soaring with it now, just bring it up high and cut the throttle. Then glide down. Loops and rolls can be done just by diving a little to pick up speed. Great thing about glding like this is that I can now get longer flying time out of a pack even if the current draw has doubled.

Hagar

Glacier Girl

My Feedback: (4)

Well I see ParkZone is finally getting on board with the new C model.
It will be available as a plug and play version.
Comes painted, brushless motor, 3 wire servos(hurray), and esc. Just add your Rx/Tx, and 3s2100 lipo.
All for $159.00, available in August.

maxamus

THANKS HAGAR !!


what sort of props will give the best flight proformance with regards to speed ect

am gonna use this

Tornado 2220mAh Li-Poly

11.1v 3S1P

10-12C Constant 15C

mega 16/15/4
hyperion titan 30 amp esc
and at the moment a 6x4 apc

any thoughts on this will be thankfuly recived.........



its not only actors that use great props !!!!!

maxamus

ok so ive just made an order for an overlander li-po bat

Poly-PRO 2100 3S 11.1volt, high discharge (20C) XXHD Gold

now what can i expect from this bad boy ???


set up

mega 16/15/4
30 amp hyperion esc
6x4 apc



its gonna be like christmas when this baby arives

sjchmura

2409-12T ... Which prop...


Should you go with a slowflyer or regular prop? Which brand (APC, APC slowflyer, or GWS).

8x6 or 7x7. i would think the 8x6 will draw fewer amps but be a bit slower.

Hagar69

Maxamus,
20C was a good choice, now you will have the amps to safely run your setup. You could even try a 5x5 or 5x5.5 for some extra speed, but less thrust.

sjchmura,
I would not reccomend slow flyer props for these motors, the RPM is so high that the prop looses its efficiency.
I have tried GWS 7x6 slow flier, not very good. Then tried GWS HD 8060, very nice thrust and good speed. Now I'm running a GWS HD9075 that I have cut down to 7x7.5. This is my favorite for now, best speed and plenty of thrust. I do not have a wattmeter, but I do not think the 7x7.5 draws much more than the 8x6. Likely around 25 amps on 3S LIPO.

I would really like to try an APC 7x7 as well as 7x6 if I could find them.

Hagar

maiden-crash

Hey guys,
I just bought the stryker home now. I put the battery in and switched ton low rates. Does anyone think the elevator is not sensitive enough?