safe to run a 1717 on 4S in a truggy? pics included

[nuz69]

Under hard racing condition (europeean track), my 1520/1Y 6S geared for 39mph (13/46) in my mbx5t truggy last 12 minutes with 6S 2950mAh 35C hyperion. I don't want to use bigger batteries because I want the lighter possible truggy.
IMO the 1717 is useless and too heavy for a truggy (80-100 grams more than the 1520). The best truggy choice is (for me) the 1520/1Y. I even run a 1520 in my buggy on 4S, a little heavy (60 gramms more than the 1515) but very efficient.

Here is a video of it running on 4S last weekend during a practice session. I forgot to time this run. Then later when I was prepared to time my 6S run, I crashed on broke the right rear a-arm on the second lap.

http://www.youtube.com/watch?v=y4CV2k60svE

When I placed my order, I did it very spontaneously in response to the big motor sale. I know now that I should have gotten the 1520 motor instead, but I was trying to get the lowest kv rating I could.

I need to get some quality Hyperion 3S batteries to be certain and do a timed run. For now, I'll have to use the Zippy packs I do have to test. I don't mind a heavy truck, as long as I can make it handle and last the distance.

ben