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RE: Larger Revolver - 9/27/2012 12:13 AM   
Luchnia


 

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quote:

ORIGINAL: ahicks

Here's an option I've been checking out for my next one:

http://www.troybuiltmodels.com/items/HD-1501MG.html

Doubt you'll beat that kind of power in this price range, and they have a decent reputation from what I can tell.


I have used PowerHD for a while now (close to two years now). I have heard that you have to use caution at which ones you use. My favorites are the 7150s, 9150s, 9001s, and the 8709TGs. The 7150s and the 9150s are tough as nails. I do have a couple 1501MGs but don't remember what I used them for. I think on throttles. Oh, and I have a few other PowerHDs.

I have seen the Dymond brand in the magazine but I don't have any experience with those. I also run Hitec and have for some time. The thing is the PowerHDs actually have done as good or better of a job than Hitecs for far less money. I have heard horror stories about them but I have yet to have any problems at all. The price for good Hitec servo will about buy you two of the better PowerHDs.

I hope I haven't started a servo war here! People are sensitive about their favorite brand of servos.

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RE: Larger Revolver - 9/27/2012 12:53 AM   
wjcalhoun


 

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I think most of us are pretty objective on engines, servos, radios, etc. Key factors are performance, reliabilty, and costs.

I like Futaba and Hitec because they have met my expectations, and have not failed when used in properly engineered applications. I had some Power HD DS120M servos which were really awful - 3/5 failed within 10 flights on an R70 - but I have heard better things about the models you mentioned. I am using Savox servos in another 50cc plane with great results. My failures with the Power HD brand have made me suspicious of the entire line, perhaps an unreasonable extrapolation, but that is just me. Those servos are analog also, rather than digital. Others see it differently, but i have gone exclusively to digitals for precision and holding; aside from cost, i have not heard a compelling argument for an advantage of an analog servo.

I just lost a 50cc AW airframe today due to a loose servo arm screw held in place by silicone, rather than blue loctite on one of the elevator halves. I check every linkage before flying each day. It was tight before i took off today. It backed out during one flight. Needless to say, that is ONE MORE LESSON i have learned. No silicone on servo screws for me, ONLY BLUE LOCTITE. That was not a servo failure, but a linkage failure, but a servo failure would have had the same result. Fortunately, she went down in a field, not into a friend's truck, or into a friend!

As I look at the amounts I have invested in larger planes - $1500-$2500 a copy - I personally see servos as a minor, not unimportant, but minor part of the costs. If i save $40/servo, it is only $200 over the plane. Reliability counts for a lot for me as it is a matter of safety.



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RE: Larger Revolver - 9/27/2012 1:20 AM   
microdon2


 

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Status: offline 		wjc - sorry to hear about your plane. But a good lesson for all of us.

On these Power HD servos, the thing is I'm on a very tight RC budget - (I buy used planes and engines, when the deal looks good). I don't need digital or ultra=high speed. The reviews I've just read online are mixed - some glowing, some not. Some have issues with centering. I'm probably going to order some and try them out.

Question - have you ever had \ heard of a crash due to servo failure? (I'm thinking most planes can still fly with one aileron, one elevator, or no rudder).

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RE: Larger Revolver - 9/27/2012 1:23 AM   
proteus_X3


 

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From: Elizabeth, NJ, USA
Status: offline 		Hi fellow Revolver fans,

 

I just maiden my Revolver Monday and all I can say is WOW! Now I'm a true believer,my Revolver does anything I ask it to do,spins ,knife edges Stall turns Ect. ,the plane makes me look like I know what I'm doing. And when it was time to land she floats right in for a nice soft touchdown. I love this airplane! I few this plane almost non-stop from 12:00 pm until 4:00 pm I had her on the ground just long enough too refuel and check all servo and control surfaces after each flight. In four hours I had 8/ 12 min flights,I would have tried for a few more but my 3000mah A123 Life pack was down to 31% so I called it a great good day. Here a few quick photo and specs

 

  1. Engine DLE-20 with Jtec radiowave muffler propeller Xoar 17x6
  2. Eliminated ignition battery to save weight added Aero-tech Ultra-IBEC http://www.tech-aero.net/ultra-ibec
  3. Control surface servo's Hitec HS-645MG duel Aileron/Elevator and single Rudder
  4. Throttle servo Futaba S3152 with carbon fiber linkage. build new thottle servo tray. throttle respones is excellent with this set-up.
  5. Bp Hobbies 3000mah 6.6 vdc A123 life battery powers all servo's and DLE-20 ignition.
  6. All control links replaced and 440 rods used with Dubro heavy duty control horns and Dubro safety lock Kwick links
  7. 8oz Fourtitude R/C fuel tank
  8. Heavy duty Miracle switch with fuel dot.
  9. CG is set dead nuts on Great planes recommended CG of 140mm/5.5" this probity because of where I mounted my elevator servo's and battery,I would say the CG is neutral

 

I have some photo's of my build I would like too share,if there is no objects... I willn't bore you with the standard modification that can be found the thread 233 pages just a different perspective of some of them,enjoy. Cheers; Rich

 



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RE: Larger Revolver - 9/27/2012 1:27 AM   
wjcalhoun


 

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Status: offline 		Nicely done Rich; pretty build.

Enjoy your R70. Sounds to me like you have equipped her very nicely. The only thing you might try, as you gain experience with her, is to prop her a bit faster with 15x10. BUT... enjoy your bird.

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RE: Larger Revolver - 9/27/2012 1:30 AM   
proteus_X3


 

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Here's a few of my build  pictures first few are of standard mods like Robart 1/8 hinges installed in tail feathers,control rods and linkages and landing gear mod.the rest are of servo installation and wiring boring stuff. Cheers Rich

 



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RE: Larger Revolver - 9/27/2012 1:31 AM   
microdon2


 

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Status: offline 		Proteus - congrats! And welcome to the Revolver club. I see you went the "no spinner" route - first time I've seen that on the Rev 70. And you're getting a 12 min flight on an 8oz tank? Very cool. And one battery - you build light! Pls post build pics.

btw - I see you're in Elizabeth, NJ. Do you ever fly at RCRCC in Clarkstown in Rockland? I'm usually there one day a weekend.

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RE: Larger Revolver - 9/27/2012 1:37 AM   
proteus_X3


 

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Status: offline 		Oops i'm embarrassed I forgot to show land gear mod actually I forgot to take a photo of the brace I installed behind the plywood block. Anyway here they are now with engine instalation. Rich

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RE: Larger Revolver - 9/27/2012 1:45 AM   
proteus_X3


 

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Status: offline 		wjcalhoun,

Thanks sir,yes I already considered putting a 15x6 prop on but right now I love how it flies now Wahoo

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RE: Larger Revolver - 9/27/2012 2:03 AM   
wjcalhoun


 

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Status: offline 		Guys
Pulled the trigger on the R90 tonight. No ship date yet. Still had not decided on her engine (ZDZ90 vs DLE111) but did hear from GP on the cowl size today. It is 9 1/4 wide at the FW, so a DLE 111 with width of over 10", not including plug tips, spark plug wires, etc, simply will not fit. As several have noted, it is a fair bit of weight to put on that airframe as well. The ZDZ is a single cylinder!

I'll have to decide if a DLE55RA or a ZDZ90 will pull her around. Maybe the mintor 75 will come back!
Anyone have an idea about other 75-90cc twins that might fit?

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RE: Larger Revolver - 9/27/2012 2:04 AM   
proteus_X3


 

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Microdon2,

Hey we pretty close to one another,I fly out of North Branch flying field and Atom's RC both field are located in Summerset New Jersey about 25 miles from my house. The DLE sips fuel if I use good throttle management, after 12 min I have aout 1/4" of fuel left in the tank. I actually didn't install the spinner and the pilot figure too same more weight I got a little carried-away with epoxy and fibber glass beefing the firewall and landing gear up.. total weight of aircraft is 9.8lbs Rich

 



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RE: Larger Revolver - 9/27/2012 2:07 AM   
ahicks


 

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Status: offline 		proteus-
I used that same landing gear mod on mine because I just abuse the hell out of my gear seeing how slow I can get it to touch down. Regarding the CG, some of the more adventurous here have moved it back 1/2" from suggested with very good results. No bad habits...
Mine took a little extra downthrust to eliminate a tendency to climb or descend depending on the amount of power I had on it. (20cc RCG APC 17x6)
About the only other thing I've done is to set the rudder up to use all the available travel for improved knife edge. Manual's suggested travel left it pretty wimpy for my flying style.

Mine has surprised me, now that it's sorted out reasonably well. It's flying qualities have taken me by complete surprise! Used to think I was pretty good at predicting them...

-Al

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RE: Larger Revolver - 9/27/2012 2:15 AM   
Sbach342Guy


 

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Status: offline 		Rotomotor 70cc?

http://www.troybuiltmodels.com/items/ROTO70V2.html

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RE: Larger Revolver - 9/27/2012 2:19 AM   
proteus_X3


 

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Status: offline 		wjachoun,
Congrats on your new purchase,I"m just a little  envious of you  but again I have plenty of kits and ARF's to keep me busy and out of  divorce court!
 My vote goes to the DLE-55RA I have the Dle-35RA that's going in a GP Gaint ugly stik. Cheers:Rich 

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RE: Larger Revolver - 9/27/2012 2:25 AM   
wjcalhoun


 

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Status: offline 		Sbach
Thanks
Saw that - but at $750 + another $120 for mufflers, it is a bit steep! CF DLE55RA for $420.


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RE: Larger Revolver - 9/27/2012 2:27 AM   
Luchnia


 

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Status: offline 		I heard some bad things about the DS120Ms as well. I got a 50cc plane with DS120Ms and I removed them all and replaced them with much more trusted servos. I just did not feel confident that they would hold up for the long haul. I might put them on a beater or something but not on a plane I have anything much invested in.

The 7150, 9150, and 8309TG are digital servos. The 9001s are analog. I am like you I prefer the digitals over the analogs hands down. BTW, what model Savox are you using?

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RE: Larger Revolver - 9/27/2012 2:28 AM   
ahicks


 

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Status: offline 		Back on to the servos. Digital vs. analog is a decision you have to make. Personally, I don't think there will ever be a day when I can tell the difference between them the way I fly. I'm just a sport pilot that likes to hack into some 3D by accident on occasion? And most will not disagree the digitals can be power hogs when compared to an analog of similar capacity.

BUT, if you insist on digital, I've been flying these servo's in 2 gassers. Both sets are in their second plane (one crashed, one just pissed me off), are at the end of their 3rd season now, and I have no regrets regarding them. They've worked flawlessly - but again my demands may be different than others. I'm good if they keep air under my plane when I tell them to pretty much. As you'll see below, I'm into inexpensive (OK, CHEAP!) servos. These have had some comments regarding centering as well, but neither of my sets has left me wondering. I don't notice myself reaching for trim buttons much past the maiden flights?

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=2

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RE: Larger Revolver - 9/27/2012 2:28 AM   
Sbach342Guy


 

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quote:

ORIGINAL: wjcalhoun

Sbach
Thanks
Saw that - but at $750 + another $120 for mufflers, it is a bit steep! CF DLE55RA for $420.




No doubt. The DLE-55 (or RA) would be my personal choice as well. I think a 55 will pull this plane around quite nicely.

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RE: Larger Revolver - 9/27/2012 2:30 AM   
Luchnia


 

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Status: offline 		Great info and we agree on the Rev 70. I hope the 50cc model will fly like the Rev 70 and even better!

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RE: Larger Revolver - 9/27/2012 2:30 AM   
wjcalhoun


 

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Status: offline 		Luchnia:
I have 1265TG in my 50cc PHP Extra 260. Very quick very strong, and so far reliable as gravity.

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RE: Larger Revolver - 9/27/2012 2:31 AM   
proteus_X3


 

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Status: offline 		ahicks,
I got the idea from you on one of your early post on this thread, I used some large tongue compressors and fromed an "I" beem between the landing gear block and the aft former.I than formed a .40" thick sheet metal front "L" bracket and installed 1" 440 screws with expoy too the firewall and expoxyed the  landing gear into place. I used U-40 expoxy rod bond and quick bond, once you used U-40 epoxy  you will never use anything else   http://www.u-40.com/rodbond.html 
Cheers:Rich

< Message edited by proteus_X3 -- 9/27/2012 4:53 AM >

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RE: Larger Revolver - 9/27/2012 2:33 AM   
Luchnia


 

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quote:

ORIGINAL: ahicks

Back on to the servos. Digital vs. analog is a decision you have to make. Personally, I don't think there will ever be a day when I can tell the difference between them the way I fly. I'm just a sport pilot that likes to hack into some 3D by accident on occasion? And most will not disagree the digitals can be power hogs when compared to an analog of similar capacity.

BUT, if you insist on digital, I've been flying these servo's in 2 gassers. Both sets are in their second plane (one crashed, one just pissed me off), are at the end of their 3rd season now, and I have no regrets regarding them. They've worked flawlessly - but again my demands may be different than others. I'm good if they keep air under my plane when I tell them to pretty much. As you'll see below, I'm into inexpensive (OK, CHEAP!) servos. These have had some comments regarding centering as well, but neither of my sets has left me wondering. I don't notice myself reaching for trim buttons much past the maiden flights?

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=2


Amazingly cheap for a digital of the power range! One would struggle to complain after 3 years for such low costs

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RE: Larger Revolver - 9/27/2012 2:40 AM   
wjcalhoun


 

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I agree that most of us, including me, probably cannot tell by flying an analog from a digital. WRT power consumption, I fly LiFe batteries with generous capacity, so I have become less concerned about power draw; most of my planes draw 250-400mAh per 15 min flight, which is admittedly a lot, but when i am carrying 4200-6400 mAh it is not so much of a concern. Were i flying NiMH, digital draw would be a bigger deal of course.

I like to know that my plane is more capable than I am as a pilot, hence strong crisp servos. I like to know that my rifles can shoot more accurately than my eyes will allow, hence endless hours at the reloading bench, etc...



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RE: Larger Revolver - 9/27/2012 2:40 AM   
Giant Flyer


 

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From: Ossian, IN, USA
Status: offline 		Proteus which jtec muffler did you use in your install??????
That is exactly the setup I am going to use also but they offer two size cans for the pitts style muffler.
one is 1.25 the other is 1.50 just curious because that is all i need to start the install.
Great job by the way!!!!!!!!!!!!!!!!!
Standing tall and proud!!!!!!

Giant 

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RE: Larger Revolver - 9/27/2012 2:59 AM   
lopflyers


 

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quote:

ORIGINAL: wjcalhoun

Guys
Pulled the trigger on the R90 tonight. No ship date yet. Still had not decided on her engine (ZDZ90 vs DLE111) but did hear from GP on the cowl size today. It is 9 1/4 wide at the FW, so a DLE 111 with width of over 10", not including plug tips, spark plug wires, etc, simply will not fit. As several have noted, it is a fair bit of weight to put on that airframe as well. The ZDZ is a single cylinder!

I'll have to decide if a DLE55RA or a ZDZ90 will pull her around. Maybe the mintor 75 will come back!
Anyone have an idea about other 75-90cc twins that might fit?



Im envious, Im still not sure if I have enough space in my hangar or truck for this big bird. My largest is a 73" Sbach with a DLE 30cc. And to fit her in the bed of my RAM she needs to go diagonal.

My vote is for DLE55RA, not too heavy but powerful enough.

Congrats WJ

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