Dear Jan,
Thanksyou for your mail.
It`s a nice project you built. We think our motor A20-8XL will be a good solution for your Fantrainer.
Is it possible to make the fan a little bit bigger? A diameter for propsize 7"x5" would be great.
Please see the list below. It is for 3 Lipo use.
Motor A20-8XL Regler Spin66 22° Timing Nr. Spannung [V] Strom [A] Leistung [W] Drehzahl [rpm]
APC 7x5E 1 6,16 10,86 66,90 9399
0,5 1 6,16 10,84 66,77 9399
1,0 1 6,15 10,83 66,60 9399
1,5 1 6,15 10,83 66,60 9388
2,0 1 6,15 10,83 66,60 9386
2,5 1 6,14 10,82 66,43 9385
3,0 1 6,14 10,81 66,37 9384
3,5 1 6,14 10,81 66,37 9383
4,0 1 6,14 10,81 66,37 9381
4,5 1 6,14 10,80 66,31 9380
0,0 2 7,35 15,24 112,01 11172
0,5 2 7,35 15,23 111,94 11172
1,0 2 7,35 15,19 111,65 11172
1,5 2 7,35 15,14 111,28 11138
2,5 2 7,34 15,13 111,05 11122
3,0 2 7,34 15,13 111,05 11120
3,5 2 7,34 15,13 111,05 11117
4,0 2 7,34 15,14 111,13 11114
1,5 3 8,50 19,04 161,84 12590
2,0 3 8,50 19,04 161,84 12585
2,5 3 8,50 19,03 161,76 12582
4,0 3 8,50 19,03 161,76 12569
4,5 3 8,50 19,04 161,84 12569
0,0 4 9,67 24,86 240,40 14246
0,5 4 9,66 24,86 240,15 14246
1,0 4 9,66 24,86 240,15 14231
1,5 4 9,66 24,88 240,34 14223
2,0 4 9,65 24,88 240,09 14217
2,5 4 9,65 24,88 240,09 14212
3,0 4 9,65 24,89 240,19 14207
3,5 4 9,65 24,90 240,29 14201
0,0 5 10,76 30,29 325,92 15352
0,5 5 10,76 30,24 325,38 15352
1,0 5 10,76 30,19 324,84 15375
1,5 5 10,76 30,17 324,63 15376
2,0 5 10,76 30,16 324,52 15374
2,5 5 10,75 30,16 324,22 15371
4,5 5 10,75 30,16 324,22 15358
0,5 6 11,95 34,63 413,83 16703
1,0 6 11,95 34,63 413,83 16682
2,0 6 11,94 34,63 413,48 16658
2,5 6 11,94 34,63 413,48 16647
3,0 6 11,93 34,65 413,37 16636
3,5 6 11,93 34,65 413,37 16617
4,0 6 11,93 34,73 414,33 16606
4,5 6 11,93 34,73 414,33 16597
5,0 6 11,93 34,73 414,33 16589
If you can not mount this propsize you can take a prop 5,5x4,3 or max. 6x4 by 4S Lipo use. The current should not be more than 30A for this motor.
I think for your model the bigger propsize of 7x5 would be the better solution because the Fantrainer is not a Speed model.