Hi Guys - I found in Stunt News that Paul walker had a new motor
in his All American Eagle. It was listed as Plett Orbit 25-H . I thought
that it was probably a 25-14 but would like some info about this motor.
does anyone know for sure what motor Paul was using and was the battery
a 5 Cell or 4 Cell ?
 
Sincerely, Walt Brownell
 

During some thread about heavy electric setups (I think over on SSW), I looked up PW's setup in our setup sticky above and was really surprised to see how heavy his (original) Orbit motor was. I did wonder if such a big motor was necessary for his plane, but since I don't fly planes that large, I wasn't sure.

Hi Dennis - I do not know for sure but I would assume the two mounting bolts
were used. My first electric stunt model used a mega inrunner and it used a
two bolt mounting pattern. It weighed about 8 oz and turned a 12 x8 prop.
 
Sincerely, Walt

Hi Walt,

I'm glad to hear your "2 bolt" system worked out OK, it gives me the confidence to bolt my motor up with 1/2 the normal # of bolts. BTW: was your 2 bolt mounting front or rear?

I'm getting close to testing mine.  My Orbit 30-12 (with the FAN) is front mounted in my CAP-21 with 2 bolts. I'm not worried much about it because it is pushing against the mount and the bolts are not under any strain, I think 1 bolt would hold it.    But my Plett Orbit 25-12 is going to be rear mounted with just 2 bolts that the motor is trying "pull" out of it's rear end! The distributor said he would reverse the shaft for me so I can rear mount. I should receive the 25 soon, I will be interested to see how they can rear mount it with the FAN on, or maybe they take it off, I'm not sure, ..... we will find out soon. I will post the results here with photos. 

Hi Larry,

Sorry, I'm embarrassed to say that I forgot to get photos of Paul's motor. My friend Igor (LA) has photos and I will get them to post here. I can't believe that I looked at his motor and I can't remember which way it was mounted. This is partly due to his neat, but tight installation and partly because my memory brain cells are getting tired.    My best guess is it was front mounted. Bob&Dean, and Dennis have some very neat, light, and solid methods for front mounting so I would think that Paul would do the same.

BTW: If you think Paul's flights are beautiful, you should see his fantastic planes up close! His plane is so well engineered and perfectly finished that it makes me want to park my new plane at the opposite end of the flight line! 

PS: We missed you at the GS contest. We had fantastic WX, great organization (thanks Jimbo), outstanding planes, and nice friends to fly with. It does not get much better! :-)  .... Eric and I had a great time. We look forward to seeing you next year.

Regards, 

Rudy - My 2 bolt system was forward mounted. I think if you have a fan
on a Plett motor you must forward mount it.
 
Walt

Hi Walt,

Your right, it looks like the fan must go if the rear mounting is used. Here is the part of their web site showing just that. (I missed this part of their site before I ordered the rear mount version).

                          http://www.icare-rc.com/plettenberg_orbit_accessories.htm

My guess is that in my scale semi radial cowl, no spinner setup, the Orbit 25-12 should still run cool enough without the fan. If not I can always install my ECL "swamp cooler" idea to keep the temps down! 

Regards,

Sorry to take so long to respond.

I use the 25-14.  Prop is a 13.5 * 7 pitch.

The motor is a rear mount.  I do use the fan with this motor.

Batteries are TP 5S2P 4000.   I use up to 3200 on a flight. The colder the day, the more the drain on the battery. A really hot day at a little altitude will drop this to ~2500. Quite a variation.

Paul Walker

Paul, do you know how that Plett Orbit compares size-wise with AXI? (coummtator dia &  length)

Hi Dennis,

Not Paul, but this link may help.    http://www.icare-rc.com/plettenberg_orbit25.htm   (SEE BOTTOM INFO.)

IMHO: The Orbit 25 is actually small for a motor that has the power of a .50 to .75 glow (on 5S). It is about the same size as my Hacker 40.  Below are some dimensions for comparison:

ORBIT 25-12   DIA  2"         L  2 1/8"  WT  8.8 OZ. (Plus about .2 oz for FAN)

AXI 2826/10   DIA  1 3/8"    L  2 1/4"  WT  6.4 OZ.

AXI 4120/14   DIA  2"         L   2 3/8    WT  11.28 OZ.

Here is the Plettenberg web site (From Germany in English). They have all the info you need, and more! 

      http://www.plettenberg-motoren.com/UK/index.htm

Paul,

The difference in battery drawdown in significant (looks like about 20%). When you say cooler day, at about what temperature is this and what is the range were it is relatively flat?  On the cooler days do you have a way to warm the batteries (I use an steel ammo box with separators to store and transport my batteries and in the sun it can get quite warm) or do you reduce the battery cooling air flow in any way?

Best,           DennisT