Which brushless setup for the Twister - RC Groups
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Jul 08, 2001, 01:45 AM
Triad of Fun
WilliamSettle's Avatar

Which brushless setup for the Twister

I've got a Twister coming and was thinking of installing a Kontronics 400-22 or 400-28 motor in it. I think Sal has the Drive 150 or Fan Drive for $189 which seems to be good price.

I not so much interested in the extra speed but more interested in efficiency and longer flights, something in the 10+ minute time frame.

Any suggestions as to which motor is the best fit for the Twister or is there another combo that I ought to look at?

Also, any input as to which batteries to use? I was thinking of the Sanyo 1100AE's or 1600 NiMH?

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Jul 08, 2001, 07:58 AM
Registered User
Andy W's Avatar
The 1600NiMH will work well, but let me say that the Twister is a great performer when lightly loaded. I usually fly mine on 8x1600mAh RS NiMH packs, but on 8x600AE it's much more agile (but I only get 2 minutes a full throttle with the 020 7T and 4.7x4.7).

Keep it light, but use the NiMH packs for long (8-10 minutes) of slightly toned-down fun..
Jul 08, 2001, 08:42 AM
EDF Head
Haldor's Avatar
Since duration is your primary goal then you should look at something lighter than a FUN400 motor.

If I were to do the same I'd consider the Astro010 motor and small NiHM cells (700mAh AAA) which will give you s400 performance and pretty good duration.

The next step up would be the 7T Astro020 on 7-8cells.

Like Andy said the Twister should be kept light and the Kontronik 400 motor is a bit big for this application and do not fit your intention.

If you were after a really fast setup in a slightly larger airframe you should then condsider the Kontronik FUN400-28, CAM5x5 on 8*800AR or CP1300's. My 400-28 will do 200W with 8x800AR's and I have some zapped CP1300's to try too which should be even hotter...
Jul 08, 2001, 12:17 PM
Triad of Fun
WilliamSettle's Avatar
Andy, I guess I should just order enough cells to make several different packs. My fleet is growing FAST and I'm going to need a variety of cells for different planes and flying styles. I think I'll order some KR-600AE's, KR-1100AAU (Same size and weight as 800's) and some 1600 NiMH, all Sanyos. I've got some Sanyo 720mAh's so this should give me several options to play with.

Haldor, I've got a 010 and controller for my Piccolo so I might try it once it gets here.

I probably should have mentioned that Andy told me about his 020 setup in a couple of e-mails and I'm seriously considering it, so thanks for giving me the heads up on the Kontronics. I went back and compared the it's weight to the 020 and it's twice as heavy if not more. :<

I do like the speed though and am thinking that I should be be able to get the same performance if not better than the S400 with a brushless motor and lighter batteries due to it's better efficiency.
Jul 08, 2001, 12:48 PM
Registered User
Two days ago I flew my Twister for 15 minutes and 12 seconds with a 7.2 Speed 400 motor and a 7 cell pack of 600AE's. It was flying just a little over "fall out of the sky" speed, but I was amazed at how long it could stay up on that flight pack. I get 5 full minutes when flying at 3/4 to full throttle. Maybe the longer duration is because I am using the 7.2v motor, while most guys use the 6V. I have considered a motor upgrade, but I really dodn't need more speed or longer duration. How can I be happy with $5 motor??

Jul 08, 2001, 02:22 PM
Registered User

By the way, you don't happen to know Joe Putnam from Cedar Rapids do you. He works for a local wireless radio company there.

Joe Putnam and I both work for Intermec!

My recommendation is to just try the 7.2 400, then decide what you want. Since the motor mounts are universal, I imagine it would be an easy swap.

Jul 08, 2001, 03:02 PM
Triad of Fun
WilliamSettle's Avatar
It's a small world isn't it. Tell Joe and Linda hi for me. I haven't talked with him since we meet in Colorado to ride bikes years ago.
Jul 08, 2001, 04:03 PM
Registered User
Originally posted by WilliamSettle:
It's a small world isn't it. Tell Joe and Linda hi for me. I haven't talked with him since we meet in Colorado to ride bikes years ago.

Will do. The company Joe P. worked for back then was Norand. Intermec bought Norand in Jan. of 97. Where is home for you?
Jul 08, 2001, 05:43 PM
Triad of Fun
WilliamSettle's Avatar
Little Rock. I worked for Dillard's as a system's engineer with Joe and Linda on several occasions way back. We built a wireless inventory system for all of our stores. Ah, the good ole days when money was no object!

We used Symbol for our DC's and Norand/Intermec for the stores. I heard they are using Intermec equipment everywhere now.

You probably also know Scott Medford. I understand he is back with Intermec. I also heard that Hammer sold out and retired. Lots of moving going on in the tech market.
Jul 08, 2001, 05:48 PM
Triad of Fun
WilliamSettle's Avatar
Joe, do you know the difference between 800AR's and 800AE's? I'm ordering some batteries tomorrow and can't find any AR's anywhere.

I was going to order some 600AE's, 1100AE's and 1600 NiMH tomorrow so I will have a variety to try with the Twister. I'm just not sure if the AE's are the same as the AR's.
Jul 09, 2001, 01:07 AM
Triad of Fun
WilliamSettle's Avatar
Joe, thanks for the input. I too will run the 7.2V S400 for a while and might wind up being very happy with it. Maybe 10+ minutes of speed will make me a nervous wreak. Your right in that you can't hardly beat the $5 motor for fun.

By the way, you don't happen to know Joe Putnam from Cedar Rapids do you. He works for a local wireless radio company there.

I just got a note from Robert Cavazos of Cavazos Sailplane Design and he said:

The Twister flies very well on a 7.2 V motor. Flight times are usually in the
7 minute range. This is a very long run time in most cases. The 6 V motor
will get about 4 minutes.
The Standard Composite Twister can handle a Brushless motor. It's just very
close to the edge. The Astro .020 7Turn motor is very light and would be
safer than the more powerful Kontronics. With a little shifting of the radio
gear inside the fuse you can put 7 or 8 1100AAU cells. 7 would be better. We
have found this cell to work very well compared to other high capacity cells.
Jul 10, 2001, 12:54 PM
Registered User
I'm flying my Twister with a Max48 (Permax 480) on 10x600AE, APC 5.5x4.5, and the performance is unbelievable for an inexpensive ferrite motor. If I don't fly full bore the entire flight, I can easily get 5+ minutes. I also fly it on 8x600AEs when I want to "slow" things down a bit. I can't see myself going brushless on this airframe when this combo works so well.
Jul 10, 2001, 06:33 PM
Triad of Fun
WilliamSettle's Avatar
Eric, I'm definitely going to try a brushed setup to start. Appreciate the input on the 480. It looks like I've got a lot of inexpensive options to try out. I just can't hardly wait for it to get here.
Jul 11, 2001, 01:29 AM
Balsa Builder
Paul Susbauer's Avatar
I believe that the AE's are for lower current draw, and after about 12-14 amps they start to drop off on their performance where as the AR's are for high current use.
Jul 11, 2001, 10:39 AM
Moths do not fly inverted
LJH's Avatar
I have about 50 or so flights on my Twister by now and I fly it on a P480 and APC 4.75X4.75 prop. I do not have it firewalled all the time and I get 5 mins ot of a 8 cell 600AE pack. On my RS 1600's I get 8-9 mins but I am deffinatly useing more throttle to make up for the lower performance. I have to say that those times are plenty for me at one time. The plane seems quite fast to me and you definatly have to keep on top of it. 10 cells on this motor and the plane is totally cool. I don't know if a brushless motor is really needed except for a very few pilots who are more sick in the head