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HeliProz . Ron’s HeliProz South . MTA Hobbies

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e-Align T-REX 250-450-500-600 > Are you ready for this? 464gram T-Rex w/ 20 min fly times on a 1200mAH
 
 
rcmartyVeteran - Location: Penticton , B.C. CANADA - My Posts This: Topic  Forum

Some pics of my conversion.






More t-rex pics here

This is a CP 3600 i have for the moment. Waiting to get the cd rom togeather. Weight is 592g with canopy and 570 as pictured.

I have some ph 10's ready to go for the cd rom motor. How is the bec in the ph10 ?

Martin
02-10-2005 01:59 AM
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unklpunk
Senior Heliman
Location: alberta canada

My Posts This: Topic  Forum		wheel collars will work try 2 per side,.. you can move them in for more sensitivity. the t-rex weighs 568 w/canopy and 1570 apogee. Problem is runtime, 2025-4200 9t pinion, wood 305's and i get 6min 30 sec before the rotor speed starts to decay quickly,.. motor was 125 f and li-po was 120f, any idea why the runtime is so low? i have an apache 2500 charger, could it be that its not charging the batts fully?
Up
02-10-2005 03:26 AM
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Jarod
Veteran
Location: USA

My Posts This: Topic  Forum		looking good Martin, The BEC on the CC10 is the same as the CC25, 1.5amps.
02-10-2005 04:00 AM
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JonDoe
Heliman
Location: Aberdeen, Scotland

My Posts This: Topic  Forum		the PH10 micro has a 3A bec
02-10-2005 04:15 AM
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rcmarty
Veteran
Location: Penticton , B.C. CANADA

My Posts This: Topic  Forum		Thanks guys.

Jarrod ..

Did you see the thread on rcgroups about putting another regulator in parallel in the esc (was a ph25) . I'll post a link if i can find again.

Unklpunk

Your times seem low. I took the pics after coming back from a hover flight. As the pics show i got about 10-11 mins off the tp2100. Pack is charging now. I'll post mah when done. (triton)

Maby belt to tight ? I've heard there a big power robber. Mine is loose, not sure if it's too loose but check out the pic above. If i hold the lower gear and turn the tail i can get it to skip but it takes alot of effort. I'm going to tighten it up a touch as i think it may be wipping around.

I had +15% (jr radio) expo and it calmed things down a bit today. Had it at 30 but it was too high (like flying the piccolo in the wind). I need to experiment some more.

Martin
02-10-2005 04:26 AM
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Jarod
Veteran
Location: USA

My Posts This: Topic  Forum		Yea I did see that. I personally would just use a SBEC if it was really an issue. I cant get my 4 servos to pull more then 1.15 amps max. Thats even holding them a little to stall them. Without any binding they dont draw more then about .85 amps. I fly my lightened rex on a CC10 and have had no issues. I bought a medusa SBEC for the CC10 but havent needed it. The CC10 has worked flawlessly for me to date with all the electronics.
02-10-2005 04:34 AM
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Jarod
Veteran
Location: USA

My Posts This: Topic  Forum
Quote 
the PH10 micro has a 3A bec


Are you talking about a pheonix CC10? If so you need to read the specs again. Its rated at 1.5 amps.

Features of the Phoenix-10.:

• Extremely Low Resistance (.013 ohms)
• High rate (11 KHz) switching (PWM)
• Up to 10 amps continuous current with proper air flow, 15
amps surge
• Five to eight cells with four micro servos
• Up to ten cells with three micro servos
• Sixteen cells MAX (with BEC disabled)
• Dynamic braking ensures folding props fold promptly
• BEC (1.5A) provides power to receiver and servos -
eliminates separate receiver battery
• User Programmable Features:
• Low-voltage cutoff
• Over-current Protection
• Brake Type
• Throttle Range . fixed/self-adjusting/governor
• Timing Advance
• Cutoff Type
• Soft Start ramp up
• Runs motor in forward OR reverse
• Auto Motor Cutoff with Reset
• Safe .power on. arming program ensures motor will not
accidentally turn on
• Low torque .soft start. prevents damage to fragile
gearboxes
• Auto shut down when signal is lost or radio interference
becomes severe
02-10-2005 04:36 AM
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JonDoe
Heliman
Location: Aberdeen, Scotland

My Posts This: Topic  Forum		perhaps CC should update the instructions

http://www.rcgroups.com/forums/show...95&postcount=13
02-10-2005 04:52 AM
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Jarod
Veteran
Location: USA

My Posts This: Topic  Forum		Well thats not confusing at all.
02-10-2005 04:54 AM
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averen
Veteran
Location: Austin, TX

My Posts This: Topic  Forum
Quote 
perhaps CC should update the instructions


0o0o0o fight fight fight

O.k., j/k

how is everyone doing the DIY CCPM? What is everyone useing for the little "band"?

Jared
02-10-2005 04:56 AM
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rcmarty
Veteran
Location: Penticton , B.C. CANADA

My Posts This: Topic  Forum		Jarod ..

Your having no problems with the ph 10 bec ? 240 gyro ? Would be nice to not have to goto the SBEC.

We should build a Sbec unit that has a led low voltage buzzer/light combo.

You still using the tp2100's ?

Martin
02-10-2005 04:57 AM
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rcmarty
Veteran
Location: Penticton , B.C. CANADA

My Posts This: Topic  Forum		I used a brass strip (hobby store metal rack) 1/4" x 1/64th i believe.
Don't need anything to thick as the strength is in the curve and the 1/4"
The first one i made up i drilled wrong. Stilll have enought to make 3 more.

MArtin
02-10-2005 05:02 AM
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Jarod
Veteran
Location: USA

My Posts This: Topic  Forum		Im using the CSM gyro. I like it way better then the 240. But at the time I did those tests I was using a GY240. Yea the TP2100's give me an additional 100-150 rpms over the TP1320. The flight times on my 12 turn, 12 mag, double are13-14 mins with a 1320, the TP2100 delivers 18-19 min conistently. I dont know what to say when I hear some folks are getting only 9 min? Im no expert on BL motors, but I am sure about my flight times. I use the timer on my radio to keep track.
02-10-2005 05:06 AM
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averen
Veteran
Location: Austin, TX

My Posts This: Topic  Forum		Thanks! Guess I have plans for tomorrow night now I just need to find some ball links here in town that don't cost a fortune

Jared
02-10-2005 05:06 AM
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Jarod
Veteran
Location: USA

My Posts This: Topic  Forum		I emailed Castle and asked them if there PH10 manual is out of date. I have heard they have good customer service. Hopefully they reply to the email quickly. I will post the reply.
02-10-2005 05:10 AM
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rcmarty
Veteran
Location: Penticton , B.C. CANADA

My Posts This: Topic  Forum		unklpunk is using a himax 2025/4200 i'd guess (from shogun). After the rex is lightened and converted to ccpm as per your thread, i'd think the 2025 is too much motor but it still needs alot of power to run.

My guess. But i still believe there's something else robbing power and minutes. I got 10-11 mins with the cp 3600 today on the 2100.

I like the idea of 20 min flights so i'm going to stick with the 2100's
or is the weight loss of the 1200's boost the flight times again ?

If my magnets would come in so i can order them , then i wouldn't have to speculate . Patience i guess .. good heli saying

MArtin
02-10-2005 05:15 AM
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unklpunk
Senior Heliman
Location: alberta canada

My Posts This: Topic  Forum		t/r belt is not tight, very smooth when turning main rotors backwards, i would think that any drag on the motor would show up as heat, motor temps are cool, batt temps are cool. only thing i can think of is not fully charged batts,..

I reused the stock links for the ccpm, once sized they work well.

Up
02-10-2005 10:41 AM
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rotaryguy
Senior Heliman
Location: Jacksonville, Florida

My Posts This: Topic  Forum		hi del.
sweet build!!!!
I wish the GBX end bells were set screw style like that...
sent you another pm for the reduced shafts....
02-10-2005 02:03 PM
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chuckhager
Key Veteran
Location: Clovis, CA

My Posts This: Topic  Forum		Beautiful job Dongle.
02-10-2005 05:08 PM
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averen
Veteran
Location: Austin, TX

My Posts This: Topic  Forum		Dongle - where did you get that pinion gear? I didn't get anything with that many teeth for my T-Rex!

Thanks,
Jared
02-10-2005 06:36 PM
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24 pages [ <<    <     19      20     ( 21 )     22      23     NEXT    >> ]36965 viewsTOPIC CLOSED
Model Rectifier Corp . Scorpion Power System . RCHover

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e-Align T-REX 250-450-500-600 > Are you ready for this? 464gram T-Rex w/ 20 min fly times on a 1200mAH
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