kross1975

Has anyone upgraded the motor on a PZ 109G yet? I have an Eflite power 25 that I'm not using, and was thinking about buying the airframe-only version and trying it out. I used the 25 on my PZ T28, and it was fast as hell.

11Hotel

Hey Kross, let me know if you tried that 25 in your 109 yet. Also, are you going to the RC Air Auction at Surprise Airpark this weekend?

kross1975

Yes, I flew it for the first time today.  at 50% throttle, it's one of the fastest planes I've flown. at full throttle, it was scary.  The eflite power 25 mounts perfectly on the optional aluminum motor mount for the stock 15, no modification required.  I had to modify the battery compartment slightly to fit the 3200 mah battery, but it was easy, almost as if they knew people would be making this upgrade.

11Hotel

Pics are a good thing! It's been awhile since I upgraded a motor, but putting a 25 into my 109 would definitely be worth it!

kross1975

You can see the gap between the nose cone and fuse with the power 25 mounted, as well as the battery compartment with a 4000mAh 30C battery

Doug47

My Feedback: (24)

Hey Kross:
Do you mean that the Power 25 just bolts right up to tthe stock motor mount ?
That sounds like a very attractive option, you sure sound happy with it.
I've got a Power 15 and am thinking of installing it, and from what I understand if a mount wil work on the 25 it'l work on the 15.
I'd appreciate any additional feedback on that if you have the time. Thanks, Doug

kross1975

Yes, the Power 25 mounted on the stock mount without any modification, although I think the gap between the spinner and the cowl is bigger than with the stock setup. I also use the PZX aluminum mount, not the plastic one.

johnpcunningham

Power 25
This is a very good motor and easy upgrade to the stock motor. It does bolt up directly to the original motor mount and the prop nut adapter slides on the 5mm shaft as well. Once assembled, the spinner sits out ~1mm more from the cowl after assembly. Hardly noticable.
Pros - easy switch
Cons - motor costs about $85

Turnigy 35-48 (900kv)
This motor performs as well as the Power 25 if not better. It does require a little more work to get it installed. The Turnigy will mount up to 2 of the original motor mount holes. Using the original motor screws, install the Turnigy motor mount on top of the oriignal motor mount (acting like a spacer) and put it all together. Install the motor to the fuse. The motor shaft will be facing toward the fuse and you will use the prop shaft that comes with the motor and install it on the other end. This is the threadded part that attaches with the supplied allen head bolts

Using a hacksaw, cut off ~2mm off of the prop nut and thread it on the motor. The cut is on the threadded end that attaches to the threaded prop shaft. Put on the prop and thread on the PZ prop nut with no spacer. The prop nut will go right up against the plastic 3 blade prop. Attach the spinner and you are good to go.
Pros - cost, motor is ~$25
Cons - little more work to get it all together

Both motors are great upgrades. I have 2 ME109s, one with Power25 and one with the Turnigy 35-48. Weigh out the pros and cons and use either one that works for you. the CG is generally unaffected with either upgrade.

JC

FREEBIRD

What amp esc are you using with the .25?


Thanks

johnpcunningham

I've run both the stock E-flight 30 amp as well as the Turnigy Plush 40 amp and Plush 30 amp. All three work fine with no problem for dogfighting and full throttle flying around. I would probably go with the 40 amp or slightly higher if I wre doing 3D aerobatics, which generally puts more stain on the ESC.

FREEBIRD

Thanks, I put the .25 in mine as well, way more quality piece than the stock motor. Are you using 3S batts?, that stock e-flight esc started pulsating at about 25 amps, but I managed to get to 320 watts of power out of it

FREEBIRD

Setting Up the Power 25?

Mine is all connected and I am using TP 2250 25C 3S batts that are around 12.40 volts off the charger. When I run the motor up it starts to pulsate at 3/4 and full throttle. I have the brake set for off and fairly sure the LVC is for 3 cells. Is there an easier way of decoding the beeps on the esc?


Thanks

johnpcunningham

I mostly run 3S Rhino LiPO 2250mha on all of the PZ warbirds. If you are running sotck ESC, you may have the throttle set incorreclty and you will need to reprogram it. You can have it auto detect or un in 2 ranges from 1.0 - 1.8ms or 1.1ms - 2.0ms range. I do not care for the autodetect and I would suggest the 1.1-2ms range. Try that first and if tht does not work, set the timing higher on the ESC so it is more advanced - like in a car - advance the timing at higher RPMs. If still no luck, try a different battery.

JC

waterman1

My Feedback: (3)

I flew my Parksone BF-109 for the 1st time today (12/7) with the stock motor. Have several problems/complaints with the airlpane. First, it seemed underpowered. Seems like the 25 motor maybe the solution? Second, at full throttle, there was an odd sound from the motor. Almost like an airflow noise or some odd friction sound which seems to have affected the speed. Maybe the spinner backlpate is not square? Third, at takeoff, the plane banked heavily to the left. Maybe not enough right thrust in the motor?

Any thoughts/comments would be appreciated.

Rick

waterman1

My Feedback: (3)

Another problem/question re. my 1st flight of the BF-109. Upon taxi and take as well as landing, the plane would want to nose over. It didn't fly nose heavy though. Maybe the solution is to bend the landing gear wire forward?

Rick

waterman1

My Feedback: (3)

Another problem/question re. my 1st flight of the BF-109. Upon taxi and take as well as landing, the plane would want to nose over. It didn't fly nose heavy though. Maybe the solution is to bend the landing gear wire forward?

Rick

FREEBIRD

I actually removed the gear and bent them out at a wider angle, perhaps 5 deg. more and it helped. Practice ground handling with the plane, I blast the throttle with up elevator and it seems to pin the rear end to the ground, it's tricky to get used of, but after a few flights you get the hang of it. You also need to fly the plane all the way to the ground similar to other taildragger warbirds on landing and keep some throttle and up elevator when taxing back.[8D]

kross1975

I have no idea if my setup is the best or recommended, but I use the eflite power 25 with an eflite 60 amp ESC and a 4000mAh 25 or 30C battery.  I only know that it is really fast, I have no idea if the power combination is efficient.  I don't use gear, and it flies out of my hand during launch, doesn't lurch to the left.  Belly landing hasn't been a problem, other than the wear and tear that comes with belly landing.

lbarnes

Like johnpcunningham, I modified my T-28 with the Turnigy motors. My pick was the 35-42/1100Kv. This motor is only 1mm shorter than the stock motor and the modification was a breeze. Since I had a issue with my firewall on the T-28 I added a 1/8" ply spacer between the motor mount and the firewall. This gave me the added length to clear the cowl.

This motor is also offered in a 900Kv version which might have been a better pick for me. I replaced the stock ESC with a 40A since my testing showed that a 10 x 7 APC was giving me 59 oz of thrust (stock was 33 oz) and drawing 36A for a wattage of 420w.

I suggest a 11.1 3s, 2280 Li Po, 30C for this motor, My 20C batteries would only product 288w with the above setup.

I think the 35-42 /900Kv would use less power than my 1100Kv with about the same results.

I just got the T-28 ready to fly and wham,,, along comes the snow and shutting me down for the winter.....[&o]



Good luck to you all in the green areas...

Larry

kross1975

I have the week off from work, so decided to mount the flaps and install some retracts. Successful flight and ;anding today, flaps make landing sooo much easier. Pictures soon.

kyleandtavion

My Feedback: (64)

Awesome I was just going to post the same thing. I have a Bf109 with a e flite park 25 I run the stock speed control and 4s 30c lipo it is wicked fast 100-110 mph. I have unlimited vertical. I am a 3d flyer at heart mostly giant scale 100cc and bigger fill my hangar so naturally I have been able to hover my messerschmidt lol. I run a two blade prop and aluminum spinner hub. I also installed flaps to help avoid scale nose over landings. I just picked up the Habu and this plane will dust it lol. I am working on improving the habu.

Merry Christmas to all!

Kyle

kyleandtavion

My Feedback: (64)

I read some of the the other post and some of the issues I had were the reason for the upgrade. Takeoffs were sketchy since I fly on a bumpy grass field the plane would do one thing or the other nose over before I got enough ground speed to take off or lift off the ground too early and stall out and almost roll over. This upgrade the takeoffs on my field are still sketchy but safer when the plane leaves the ground I can blip the throttle and avoid the stall. I have to take of in about 6 feet or less to avoid nose over. I am sure it would be easier to take off from pavement.

glazier808

My Feedback: (1)

I only use my landing gear on hard surfaces, and hand launch in the grass. It's seemed to solved alot of problems for me.

Casey

kross1975

I also hand launch, only use the retractable gear for landing.

johnpcunningham

The trick to takeoffs and landings on the BF-109 is putting the ailerons in SPOILERON mode. This means both of the ailerons are "up" when you take off and land. To do this, you can not use the Y-splitter for the ailerons. each servo must have its own connection to the RX. For the Spektrum stuff, this is typically "AIEL" and "AUX1" on the RX. Program your radio and use the toggle switch to go from normal mode to spoileron mode.

Initially I had difficulty with the takeoffs and landings. I had to take off very fast and land very fast. Using flaperon (both ailerons down) actually made it worse and cause tip stalls. With both of them up, it works great and the plane actually floats on take off and landings.

For those that may not know, you can still turn the plane in spoileron mode because the ailerons still move in the direction required. They are just not centered to the wing in this mode.

Hope this helps,

JC