my xray xb8 ec conversion

[sebsta]

I just wanted to show you my xray conversion i finished recently:







car: xray xb8 ec
conversion: rc-monster motor mount
custom battery tray
motor medusa 3660 - 1600
esc: MMM (chopped)
battery: 5000 zippy 4s 25c
gearing: 8,63 : 1
weight: 7lb 15oz (d*mn, do i love metric)

I didnt go with the monster tray because I wanted the battery to stay clear off the mudguards. Gladly the xray has just enough center diff offset to achieve that. Even 5s zippies should fit. The tray was machined from delrin. After my bad expierience with the hobbywing 80 a esc I switched for a MMM. But I have to say that the case is a joke. The first wrong landing from a jump the thing popped open. Plus the top cage kept collecting small stones. So I chopped the top off and sealed it with shoe goo. With this mild setup I should be ok without the fan. The motor only revs around 24 k rpm but with the gearing its fast enough for me (and the track I intend to run on). First I had a 3660-2000 (geared for around the same speed) but it felt too hot with more power than I needed. So I switched for the lower kv motor. I didnt have a chance to do real temp and runtime tests yet but I hope it will be ok.



I wanted to thank everybody at this forum for being such a great help.
Any suggestions and comments are welcome.

-sebsta-

[Dafni]

Nice buggy! I like the "old" xrays.

I think you should tie your motor wires down. If you keep them like that they will eventually crack at the motor. And watch for that spur on your lipo! Those buggies flex and twist in all impossible ways when you race them...

cheers

daf

[sebsta]

Thanks, Dafni!
I think the batteries are going to be ok. The motor mount should prevent them from being eaten by the spur. Didnt have a problem there yet. And the cables.... I dont know. Seen it done this way on pictures many times. I think flex is better so tey can move around and dont put strain on the motot or esc.

Originally Posted by sebsta

Thanks, Dafni!
I think the batteries are going to be ok. The motor mount should prevent them from being eaten by the spur. Didnt have a problem there yet. And the cables.... I dont know. Seen it done this way on pictures many times. I think flex is better so tey can move around and dont put strain on the motot or esc.

I also have an Xray EC that I would like to convert. But I love this battery tray you made. Was curious if you would make another one?