Hi,
This is my first post on your forum. But i am reading it since quite some time as i converted my 12 year old Crono S6 1:8 buggy 6 months ago. Perhaps i can share some insights on this type of motor as i am using a Kontronik fun 600/25 (2500rpm/v) with a kontronik jazz 80 controller.
This is a pic of my setup using 2 2s4p Konion 1100
I would compare this motor to a lehner 1930. 2 poles, dimensions: 36 x 59 mm (1.42in x 2.32in), Weight: 270 g (0.6lb), Output shaft 5mm. As already stated the rotor consists of segmented magnets and the overall feeling is that you have a quality motor in your hands.
Kontronik sells a custom heat sink which fits perfectly around the motor can. You can see it installed on my motor on the pic as well. Mine lies flat on the chassis so there is some heat transfer to the chassis plate.
The fun 600 motors have an open front/end bell which may concern some of you. So if you want to you may install some kind of protection comparable to the NEU motors one. Since i've driven another motor with open end bell in another offroad car and never had an issue with it i didn't even bother to protect this one. I think it has a good impact on motor temperature when the holes are not covered. But it sure depends on the position of the motor in your chassis.
I'm using 12 GP3700 NiMh cells or 4s4p Konion 1100 (from a Bosch 36V power tool battery). Gearing is 12/52 which translates to a top speed of around 37mph. As i'm using an eagletree datalogger i can provide you with some detailed informations.
Graph using my Konion 4s4p setup driving on concrete up and down: (accelerating, top speed, breaking, turn, accelerating and so on)
As you can see my peak performance on this run was around 1000 Watts. When driving on a forest road which is similar to a small race track i usually see peaks of 1200 Watts using my GP3700. At the end of my runs (after 6 to 12 minutes depending on the batteries i use) my max motor temperature is around 70°C (158°F). Outside temperature here is around 30°C (86°F). Average Watts: 350W. Average Amp draw: 25-27Amps. My mah draw varies between 350-450mah per minute. The buggy wheighs around 4Kg (8.82 pounds) as my batteries are wheighing between 740g-826g (1.63-1.82lb).
From my point of view i can recommend this motor for buggy use. I think in any application where you can fit a lehner 1930 a fun 600 motor would also do the trick. Benefit: fun 600 sells at 150 Euro whereas a lehner 1930 sells at around 200 Euro. And the kontronik motors are usually shipped in less then a week.
When you use a Kontronik Jazz 80 controller (integrated switching BEC up to 18 cells, so no Ubec needed, cont Amps 80, burst amps 100, up to 18 cells, Car, boat, flight, heli mode) with a fun 600/25 you have a perfect match since both are built by Kontronik. This means no cogging at all even if you hit full throttle from a standstill.
Before i used the fun 600/25 i used an 8 pole Graupner 600M (2600rpm/V) and although Kontronik told me the Jazz 80 do not match with this type of motor (RPM issue since i got around 36000-42000rpm with an 8 pole motor which gets beyond the jazz 80s RPM limit of 150000rpm for a 2 pole motor) i could drive the Graupner Motor and also saw peaks of around 1000 Watts. But you have to fit a heat sink on the controller (otherwise it will thermal) which really is no big deal then it's perfectly suited to be used as a car controller.
Bottomline: the fun 600 and jazz 80 is a good combo for 1:8 application.
And for you guys wondering how the car looks with body ... there you go:
But the last few weeks i converted the car back to its original buggy look.
Greets from Austria,
Othello