Dynamic Review - Page 5

chris sherman · Apr 27, 2004, 10:29 PM

Andy Thanks for all the time you spent on your review. I used it very much in the building of my Dynamic. I also read it before I purchased the plane. I am about a year into the hobby and am going full tilt. There is so much to learn and guys like you really help guys like me. Hopfully I can return the deed. Thanks again Chris

chris sherman · Apr 27, 2004, 10:53 PM

Hey Bob, I have a bec in my speed control that runs everything from the one battery pack no rx battery pack needed. Do you know what your batts weight?. I'm sure I will get it sooner or later at least I know what I'll be thinking about tonight in bed.

rcjetpilot · Jun 23, 2004, 09:18 PM

Maiden the hotliner:

My setup:
Aveox 36/24/2 8*GP3300 on a 7-5 prop.

A very fast plane.... but with a few observations.

Take off on grass with the stock wheels are a no-go. way to small so anyone else thinking about this plane on grass I suggest you install way bigger wheels. The stock wheels are 1.75 inches and I would recommend atleat 3 inches... (very important)

here's why: when this plane stalls it has a hard snap, and when taking off from grass, its hard to get on step. It took a lot of rudder and some aileron to hold its course, that is ,until it got up enough speed. And wow, does this plane cook...

Landing: Folks this thing cooks and hates to slow down... The power off glide is very long and it doesn't bleed much airspeed. Took at least 6 passes before I could set her down. You need to watch the speed, if you stall, it tips over quickly. Go flaperon for sure.

I recommend two aileron servos mixed as flaperons. I'll try it out and report back.

If I had the money to buy another motor setup... I'd go high wind, light, and on a FAUP pack. My setup is 8GP's plus a heavy motor, a lighter setup would likely yield better slow flight performance.

The guys at the field could not believe this was an electric plane. I had no trouble hitting 70+ mph and is way over powered. My inflight thrust is likely to be 30oz and and flew at 1/3 throttle with no problem.

A very cool plane

Smoked the IC boys but good...

Onto the a big electric...
Bob.

Andy W · Jun 23, 2004, 09:48 PM

Mine takes off on grass just fine with the stock wheels. It picks up the tail with no input, and is off very quickly..

Although I agree that this model is very clean and does not slow easily, I wonder if you have brake enabled? With brake disabled and the prop freewheeling, I have no trouble getting this one down..

Flaperons would be a no-no - you'd end up stalling a wing.

I agree on the FAUP pack, however - snaps and other more aggressive activities are much more enjoyable with a lighter ship..

My speed is similar, and I would not say I am overpowered.. I've thought about overpowering it, however..

..a

rcjetpilot · Jun 23, 2004, 10:07 PM

Hi Andy,

Take off was very tough in 2 inch grass. I really think the bigger wheels would help as they would offer a longer take off run before lift off. On one take off, the speed was low and got very hairy. Took alot of pilot input to keep it in the air.

Lighter motor/pack setup is definitely the way to go, IMHO.

Brakes was on, still a very long glide before I could land. No doubt this plane wants to fly very fast

If only the "bonnie 20" had a easy access hatch for the battery

Bob

rcjetpilot · Sep 24, 2004, 11:01 PM

I've logged about 30+ flights on my dynamic hotliner.

Let me offer a few comments...

1. I'm using a Aveox 36/30/2 with a 9-6 APC electric prop, paired with an 8 pack of GP3300's. Duration is a solid 6 minutes at full bore with enough juice left over for 2 or 3 landing passes. Forget the LiPo,s balancing will be an issue. I found I needed to move the CG forward by 1 inch. You'll need the weight of GP's

2. Upgrade the tail wheel to this: http://www2.towerhobbies.com/cgi-bin...?&I=LXFV46&P=7 ($7.00) It was so easy to install, sand the underside tail of the fuslage a bit, glue the nylon brace, tape the steering spring on... way better then the orginal wire thingie..

3. If you ROG, flip the main gear around so the wheels are further foward of the CG. The plane likes to nose over and break props. With the gear reversed I've had great success. And no trouble with taking off at all, the tail comes up right away. Im fact, I'm airborne in about 70 feet.

4. Since no throws are suggested in the instructions, here's mine:
1/2 differential airleron.
3/8 elevator, neutral postion has the 3/16 drop from the center part of the stab.
5/8 rudder.

5. The power setup I'm using produces 33 oz inflight trust (static is obviously higher) with a estimated top end speed around 65 mph.

This is truly an awesome plane.. I'm very happy with it's performance.

Bob

Roger Felton · Apr 02, 2005, 01:24 PM

I finally broke down and bought a 4440 3S Tanic pack to replace the ageing 9 cell 1950 FAUP that I have been using in my Dynamic. All I can say is WOW ... More than twice the duration, 3oz lighter, and about 10% more watts. The boys at the glow field were suitably impressed.

RF

Andy W · Apr 02, 2005, 08:26 PM

Roger, what motor (and prop) do you have?
I have several LiPo's I could use.. haven't tried them, though..
..a

Roger Felton · Apr 03, 2005, 01:21 AM

Andy -

Jeti Phasor 15-4, Graupner Cam 8 x 6, CC35
About 330 watts on the whattmeter.
Mounted the pack on a piece of light ply so I could get it up in the nose for balance.

RF

Dr._Gernot · May 08, 2005, 03:27 PM

Hello,

I made more than 110 flights with my Dynamic. Here is my experience:

It all started with Speed 600 8.4 V, Aeronaut 8" x 5" folding prop, Kontronik SUN 3000 and 8 cells RC 4/5 SC. Works quite nice but very short flights between 3 and 4 minutes duration.

I moved to Hacker B40-9L, 4,4:1, Aeronaut 13" x 11" folding prop, Jeti Hacker Master 70 B and 8 x SANYO 3600 mAh NiMH. Works excellent, more than 6 minutes full throttle duration, however the NiMH cells overheated in summer and died after maybe 30 cycles.

Today I am still using the Hacker B40 but I replaced the NiMH battery pack by 8 x SANYO N3000CR NiCd packs. These very heavy packs have shorter duration of maybe 6 minutes, but they seem to be very reliable, even when it is hot. Flying in gusty wind is a great pleasure with these batteries. The overall weight is now about 56 oz.

I am using no landing gear. A bungee launch is necessary to avoid stalling during hand launch, which caused some crashes in the beginning. Thanks to the solid fuselage and wing of the Dynamic no big damage happened. The line is hinged in the front area around the middle of each wing to avoid trouble between the line and the prop.

It is my experince that it is better to make a controlled higher speed landing then a lower speed little control near stall landing. Especially if soft grass is avaliable for damping. Landing speed can be easily decreased using the elevator by pulling and returning to neutral several times.

Gernot

ShamelessMale · May 09, 2005, 10:09 PM

Does anyone have advice on the best way to open up the airvents. I know I am going to slaughter them with my dremel...

rcjetpilot · May 09, 2005, 10:19 PM

Quote:

Originally Posted by ShamelessMale

Does anyone have advice on the best way to open up the airvents. I know I am going to slaughter them with my dremel...

Go slow and use a pointed / tapper style grinding bit. That's how I did it

Be sure to mount the servos as high up in the fuselage as you can. You'll need the space below to slide in the receiver.

Your going to like this plane, its a ton of fun

Bob.

Dr._Gernot · May 28, 2005, 05:13 PM

Hello,

in addition to post #70 I would like to mention that I took off the 13"x11" folder prop and use now a 16"x10" Aeronaut folder with a standard centerpiece.

It gives less top speed, but a nice extra push (vertical climbouts and so on) even with the extremely heavy 8 x N3000CR packs.

Gernot

Volunteer · Apr 23, 2007, 10:34 AM

I just crashed my Dynamic and I am looking for another or a least another fuselage. Anybody out there have one for sale?

Volunteer · Jun 06, 2007, 10:32 AM

I found someone to fix the thing and got it back in the air this morning. You guys are right - it's fast and it takes a lot of room to land . No problems with stalls but it was a tad tail heavy and kinda wild. I'm running a Jeti 30/3 and 2 TP 2100's and the front of the packs are past the LB bolts.

Jun 23, 2004, 09:18 PM	#63
rcjetpilot Watts is life... Join Date: Sep 2003 Location: Monmouth Co, New Jersey, United States Posts: 2,353	Maiden the hotliner: My setup: Aveox 36/24/2 8GP3300 on a 7-5 prop. A very fast plane.... but with a few observations. Take off on grass with the stock wheels are a no-go. way to small so anyone else thinking about this plane on grass I suggest you install way bigger wheels. The stock wheels are 1.75 inches and I would recommend atleat 3 inches... (very important) here's why: when this plane stalls it has a hard snap, and when taking off from grass, its hard to get on step. It took a lot of rudder and some aileron to hold its course, that is ,until it got up enough speed. And wow, does this plane cook... Landing: Folks this thing cooks and hates to slow down... The power off glide is very long and it doesn't bleed much airspeed. Took at least 6 passes before I could set her down. You need to watch the speed, if you stall, it tips over quickly. Go flaperon for sure. I recommend two aileron servos mixed as flaperons. I'll try it out and report back. If I had the money to buy another motor setup... I'd go high wind, light, and on a FAUP pack. My setup is 8GP's plus a heavy motor, a lighter setup would likely yield better slow flight performance. The guys at the field could not believe this was an electric plane. I had no trouble hitting 70+ mph and is way over powered. My inflight thrust is likely to be 30oz and and flew at 1/3 throttle with no problem. A very cool plane Smoked the IC boys but good... Onto the a big electric... Bob. Last edited by rcjetpilot; Jun 23, 2004 at 09:20 PM.*

Sep 24, 2004, 11:01 PM	#66
rcjetpilot Watts is life... Join Date: Sep 2003 Location: Monmouth Co, New Jersey, United States Posts: 2,353	How about a better tailwheel... I've logged about 30+ flights on my dynamic hotliner. Let me offer a few comments... 1. I'm using a Aveox 36/30/2 with a 9-6 APC electric prop, paired with an 8 pack of GP3300's. Duration is a solid 6 minutes at full bore with enough juice left over for 2 or 3 landing passes. Forget the LiPo,s balancing will be an issue. I found I needed to move the CG forward by 1 inch. You'll need the weight of GP's 2. Upgrade the tail wheel to this: http://www2.towerhobbies.com/cgi-bin...?&I=LXFV46&P=7 ($7.00) It was so easy to install, sand the underside tail of the fuslage a bit, glue the nylon brace, tape the steering spring on... way better then the orginal wire thingie.. 3. If you ROG, flip the main gear around so the wheels are further foward of the CG. The plane likes to nose over and break props. With the gear reversed I've had great success. And no trouble with taking off at all, the tail comes up right away. Im fact, I'm airborne in about 70 feet. 4. Since no throws are suggested in the instructions, here's mine: 1/2 differential airleron. 3/8 elevator, neutral postion has the 3/16 drop from the center part of the stab. 5/8 rudder. 5. The power setup I'm using produces 33 oz inflight trust (static is obviously higher) with a estimated top end speed around 65 mph. This is truly an awesome plane.. I'm very happy with it's performance. Bob Attached Thumbnails 23.4 KB · Views: 277

Apr 02, 2005, 01:24 PM	#67
Roger Felton Registered User Join Date: Aug 2002 Location: Carson City, Nevada, United States Posts: 165	Tanic Power for the Dynamic I finally broke down and bought a 4440 3S Tanic pack to replace the ageing 9 cell 1950 FAUP that I have been using in my Dynamic. All I can say is WOW ... More than twice the duration, 3oz lighter, and about 10% more watts. The boys at the glow field were suitably impressed. RF

Apr 23, 2007, 10:34 AM	#74
Volunteer Registered User Join Date: Mar 2006 Location: Chattanooga, TN Posts: 242	Resurecting this old thread I just crashed my Dynamic and I am looking for another or a least another fuselage. Anybody out there have one for sale?

Apr 27, 2004, 10:29 PM	#61
chris sherman Registered User Join Date: Apr 2004 Posts: 5	Andy Thanks for all the time you spent on your review. I used it very much in the building of my Dynamic. I also read it before I purchased the plane. I am about a year into the hobby and am going full tilt. There is so much to learn and guys like you really help guys like me. Hopfully I can return the deed. Thanks again Chris

Apr 27, 2004, 10:53 PM	#62
chris sherman Registered User Join Date: Apr 2004 Posts: 5	Hey Bob, I have a bec in my speed control that runs everything from the one battery pack no rx battery pack needed. Do you know what your batts weight?. I'm sure I will get it sooner or later at least I know what I'll be thinking about tonight in bed.

Jun 23, 2004, 09:48 PM	#64
Andy W That sickening crunch.. Join Date: Jun 1999 Location: Marietta, GA Posts: 39,777	Mine takes off on grass just fine with the stock wheels. It picks up the tail with no input, and is off very quickly.. Although I agree that this model is very clean and does not slow easily, I wonder if you have brake enabled? With brake disabled and the prop freewheeling, I have no trouble getting this one down.. Flaperons would be a no-no - you'd end up stalling a wing. I agree on the FAUP pack, however - snaps and other more aggressive activities are much more enjoyable with a lighter ship.. My speed is similar, and I would not say I am overpowered.. I've thought about overpowering it, however.. ..a

Jun 23, 2004, 10:07 PM	#65
rcjetpilot Watts is life... Join Date: Sep 2003 Location: Monmouth Co, New Jersey, United States Posts: 2,353	Hi Andy, Take off was very tough in 2 inch grass. I really think the bigger wheels would help as they would offer a longer take off run before lift off. On one take off, the speed was low and got very hairy. Took alot of pilot input to keep it in the air. Lighter motor/pack setup is definitely the way to go, IMHO. Brakes was on, still a very long glide before I could land. No doubt this plane wants to fly very fast If only the "bonnie 20" had a easy access hatch for the battery Bob

Apr 02, 2005, 08:26 PM	#68
Andy W That sickening crunch.. Join Date: Jun 1999 Location: Marietta, GA Posts: 39,777	Roger, what motor (and prop) do you have? I have several LiPo's I could use.. haven't tried them, though.. ..a

Apr 03, 2005, 01:21 AM	#69
Roger Felton Registered User Join Date: Aug 2002 Location: Carson City, Nevada, United States Posts: 165	Andy - Jeti Phasor 15-4, Graupner Cam 8 x 6, CC35 About 330 watts on the whattmeter. Mounted the pack on a piece of light ply so I could get it up in the nose for balance. RF

May 08, 2005, 03:27 PM	#70
Dr._Gernot Registered User Join Date: May 2005 Location: Augsburg, Germany Posts: 133	Hello, I made more than 110 flights with my Dynamic. Here is my experience: It all started with Speed 600 8.4 V, Aeronaut 8" x 5" folding prop, Kontronik SUN 3000 and 8 cells RC 4/5 SC. Works quite nice but very short flights between 3 and 4 minutes duration. I moved to Hacker B40-9L, 4,4:1, Aeronaut 13" x 11" folding prop, Jeti Hacker Master 70 B and 8 x SANYO 3600 mAh NiMH. Works excellent, more than 6 minutes full throttle duration, however the NiMH cells overheated in summer and died after maybe 30 cycles. Today I am still using the Hacker B40 but I replaced the NiMH battery pack by 8 x SANYO N3000CR NiCd packs. These very heavy packs have shorter duration of maybe 6 minutes, but they seem to be very reliable, even when it is hot. Flying in gusty wind is a great pleasure with these batteries. The overall weight is now about 56 oz. I am using no landing gear. A bungee launch is necessary to avoid stalling during hand launch, which caused some crashes in the beginning. Thanks to the solid fuselage and wing of the Dynamic no big damage happened. The line is hinged in the front area around the middle of each wing to avoid trouble between the line and the prop. It is my experince that it is better to make a controlled higher speed landing then a lower speed little control near stall landing. Especially if soft grass is avaliable for damping. Landing speed can be easily decreased using the elevator by pulling and returning to neutral several times. Gernot

May 09, 2005, 10:09 PM	#71
ShamelessMale In need of a new name... Join Date: Dec 2002 Location: Clarkston, MI Posts: 428	Does anyone have advice on the best way to open up the airvents. I know I am going to slaughter them with my dremel...

May 28, 2005, 05:13 PM	#73
Dr._Gernot Registered User Join Date: May 2005 Location: Augsburg, Germany Posts: 133	Hello, in addition to post #70 I would like to mention that I took off the 13"x11" folder prop and use now a 16"x10" Aeronaut folder with a standard centerpiece. It gives less top speed, but a nice extra push (vertical climbouts and so on) even with the extremely heavy 8 x N3000CR packs. Gernot

Jun 06, 2007, 10:32 AM	#75
Volunteer Registered User Join Date: Mar 2006 Location: Chattanooga, TN Posts: 242	I found someone to fix the thing and got it back in the air this morning. You guys are right - it's fast and it takes a lot of room to land . No problems with stalls but it was a tad tail heavy and kinda wild. I'm running a Jeti 30/3 and 2 TP 2100's and the front of the packs are past the LB bolts.