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I do agree with Travis, my E-Slayer is considered a conversion since I used an existing platform of E-Revo to convert it to a CORR type truck. This one is totally new and I just wish Travis will consider mass production :whistle: so a new standard will be set for CORR truck (RC) or maybe some manufacturer buys this design and give it a go on the market...just my 2 cents....BTW, I like Shawn's truck too :yes:
Travis, wheres the video?? :yipi: just kidding I know school and work is keeping you busy...hope to see vids soon :party: |
It's gonna be over a week before this truck can do anything major on film... The rest of this week is pretty busy for me, then next week is finals. At least I'm done by 10am on Thursday (11th)! Then I can head over to the track at about 3pm when it opens.
Quick update: Got the body painted up, and have found some weak-er things with the lower links causing screws to bend (albeit not high strength steel). So I will have to ditch the nice-looking aluminum rod ends on the lower links and go to plastic to allow the links to flex more, and will have to work on the spacing between the links where they are triangulated. Thinner weight oil (35) in the rear shocks definitely helps, but GS shocks SUCK. No wonder they were Red Tag... So that means this truck is getting some Ofna Super shocks up front that WON'T leak. That will make the handling a lot more predictable. A rear sway bar is in the very near future as well. On-power steering will benefit greatly from it. |
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Now where is the Video?? :whistle: or better yet when are you going to the track next :neutral: I'll bring my slash :wink: |
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Sorry I missed that!..
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Wow... :surprised: :yipi:
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After some parking lot/street testing I have found the KMS 2826-06 to be quite inadequate, even with an Axi fan mounted to the back. Under normal usage the motor would run about 170 deg. F and cog quite a lot. In the last (and final, for this motor) outing I noticed the truck seemed to be slowing down, and I knew the batteries were far from cutting off. It was almost like the motor was going "soft".
Maybe 15sec. later the motor decided enough was enough and put out quite a nice puff of white smoke. I continued to provoke it, and it rewarded me with some more smoke and even a light show from inside the motor! This was quite a sight and I felt compelled to continue feeding it so my co-workers would get a chance to witness this spectacular sight. As you can imagine, that motor is done for. That is the last time I will purchase a KMS motor for an application where some performance is desired (this same size/wind of motor works terrifically in my crawler). This has led me down an somewhat interesting path - the path of motor choices. I was contemplating a typical inrunner (Medusa 36-50-xxxx) and a spur/pinion gear reduction with slipper clutch, and making the mounts to go with that, but was unable to come up with an adequate design which would allow minimum driveshaft angles (vertically and horizontally) as well as a more centered motor position. Then I came back to the original plan of direct-drive-to-diff with an outrunner and set out to find a similar sized motor to the KMS 2826 but with more power and a reasonable price tag. The Scorpion motors seem like an excellent option: http://www.innov8tivedesigns.com/pro...products_id=83 http://www.innov8tivedesigns.com/pro...roducts_id=391 If only their HK3026 came in a kv in the low 700s, then it would be perfect. That 3032 is not only longer than the 2826 I was using, but also larger in diameter. I think it should run much cooler due to the size and better quality. If you guys think this is a good option, or can point out something else, I would like to hear about it. Whew, long post! Anybody who has read this far deserves a cookie! |
holy dirt! there has been alot of development on this little baby! IM LOVING IT!
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Glad you guys like it!
I did order the Scorpion 3032-12 yesterday, should be here soon. Lately I've been reading up on building/winding motors (what sikeston ended up doing for his direct-drive-to-diff Revo conversion). I will probably end up either rewinding the motor that is on its way, or get a kit version of the same motor and wind that. By having my own winds I can pack more copper onto the stator than the factory does, which in most cases means a better/cooler performing motor. For now I have 2 Hobby City HXT DIY outrunner kits (12pole stators just like the Scorpion 30 series) and I will wind them DLRK (14 magnetic poles), but not sure if wye or delta will be chosen (I can choose after each slot has been wound). |
hmm looking at the pictures i have ONE recommendation... if im allowed:lol:
The lower links at the chassis looks like its gonna take BUNCHS of force. I think the lateral stresses on that will transfer to the Chassis plates and ultimately fatigue the plates. I think even a ziptie to hold it straight would help! just a thought |
You're right, the forces at the chassis from the lower link are huge. The lower links do carry the majority of the load from the rear axle.
I will be honest and admit that this design I came up with for mount the lower links is far from the best option. Basically the ends of the two lower links have a long set screw running through them and the two threaded posts on the sides of the links are tightened against each other to put tension in the screw. The screw in the pictures actually bent, and since then I have removed most of the spacing between the link ends so that there is more support. Also, the aluminum link ends shown in the pics were replaced with some Jato rod ends. This will provide more flex in the lower links, which is good (especially since the links are steel and won't flex much at all). As for fatigue on the chassis plates, TBH I think this is a non-issue. One of my concerns from the get-go was the potential for poor integration between chassis components - this sort of project has not been attempted by many, and thus there isn't much information on what works and what doesn't. So for this reason (among many) I chose polycarbonate to be the chassis material. As I'm sure you are aware it is highly flexible depending on the thickness, and in this case the vertical chassis plates provide adequate flex to nearly eliminate fatigue. But I do need to work on better lower link mounting... ideas are much appreciated :yes:. |
Something nice came in the mail yesterday!
http://img.photobucket.com/albums/v1...k/IMG_7979.jpg http://img.photobucket.com/albums/v1...k/IMG_7983.jpg http://img.photobucket.com/albums/v1...k/IMG_7988.jpg http://img.photobucket.com/albums/v1...k/IMG_7990.jpg http://img.photobucket.com/albums/v1...k/IMG_7993.jpg And here is the carnage from the KMS: http://img.photobucket.com/albums/v1...k/IMG_7995.jpg http://img.photobucket.com/albums/v1...k/IMG_8000.jpg http://img.photobucket.com/albums/v1...k/IMG_8001.jpg And some comparisons: http://img.photobucket.com/albums/v1...k/IMG_8006.jpg http://img.photobucket.com/albums/v1...k/IMG_8014.jpg On that last picture, note the large silver ring at the "business" end of the Scorpion motor. That's a ball bearing! It sits inside the spinning part of the motor and provides extra support. |
Fubar...
New motor looks very beasty, should give that truck plenty of grunt. |
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