|
01.02.2008, 02:02 AM
Yes, it was Sike that gave me the idea of the direct to diff outrunner setup that ended up in the redcat chassis I had laying around (during the time of the temp forum) I saw his outrunner setup on ebay, and then posted about here, before I joined (I lurked around for 6 months or so). It seemed to be a different approach, so I gave it a try. Nice to see that we have a few people, sike, metalman, others, that have tried the direct to diff outrunner with success. Sike is trying an axi outrunner in a more conventional way in a new emaxx, and making use of the tranny and slipper. It should be very interesting to see how the combo of an outrunner with a slipper and 2 speed tranny will compete with an inrunner setup.
It appears that the general method for improving brushless performance has been higher voltage coupled with slower turning motors that produce more torque than rpm, and then gearing to achieve the desired speed. We are just taking that one step further with the outrunner and its higher torque level.
I still run plenty of inrunner setups, and am trying out 8s+ lipo with lower kv inrunners. Seems like the cheaper, lower kv motors on higher voltage work better, possibly the higher voltage helps to mask their desigh flaws? However my quest for the "perfect $100 brushless motor" (wishful thinking?!)has lead me to outrunners. They are not as flexible in terms of rpm, but when geared and powered correctly, they seem to be as capable as an inrunner.
I have tried the so called hybrid outrunner (align 600 series) and do think that these will be viable alternatives for powering larger (1/8) vehicles. They spin faster than a traditional outrunner, but still produce more torque than a comparable outrunner. Only issue is their relatively slow spool up. Std outrunners (especially in direct to diff applications) mask the slower spool time by virtue of lower gearing.
I personally think that the varied experimentation with different motor types will benifit us all, as not every motor will work in every application. It is always good to have variety!
|