Xray T4 2016
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#241

Great night tonight shaking it down. Only adjusted the front top shock position inward and ran the box set up. Oh yeah and ran 3000 in the diff and 450 Kyosho oil in the shocks.
Love the car and can't wait to get back out. Being a long time Tamiya person I was a little leary, nothing to be worried about, car was great. Thanks for all the help here.
Love the car and can't wait to get back out. Being a long time Tamiya person I was a little leary, nothing to be worried about, car was great. Thanks for all the help here.
#242
Tech Fanatic
iTrader: (35)

Had a good time taking the car out for its first race day yesterday. My particular first time racing at this track. Ended up taking home TQ and win out of 6 total guys. Car was solid for the most part. Only a couple little nuances I'd like to correct in the setup, but overall very happy with it. A few notes:
Ran the PF Dodge Dart in the initial shakedown a week ago and in practice yesterday before the first qualifier. Finished painting an LTCR last week, which is what I generally use, but hadn't tried the Dodge Dart yet. Ran the LTCR in the first qualifier and will definitely continue to run it. Slightly smoother feeling overall...Dart felt darty (pun intended) and "on edge" a lot of the time. LTCR smoothed this out a lot.
Made a few minor changes from the kit setup. Camber, shock locations, shock oil and other minor odds and ends....setup sheet attached for reference. Edit: File too large to upload. (Thanks RCT) Check here: https://app.box.com/s/g2znbah20s018986v5d446s0mjc4dmmw
I believe the track took video of the main...I'll post it up if they post it. Results sheet is attached. The track doesn't use MyLaps transponders, only the I-Lap system, so I had to use a rental for the time being.
Geared 42/104 (64P) and motor temps were in the 130s. Pulled most others ever so slightly on the straights but most of the time gained was in the infield which is fairly technical. I am running a Yeah Racing fan on the motor. Can probably go up another tooth or two, but we will see when I get some more time on the track.
Loosened rear belt 1 notch. Perfect tension for 13.5 here. Don't believe looser will work...
Things that I'd like to correct with the setup:
Still has slight "edginess" feel to it. Have to be gentle on the steering and the car is quick. Too rough on the steering and you'll get a lot of skid, but doesn't really spin out until you try and correct for it. Additional rear camber over front camber seemed to help here, but starting to hurt mid-corner steering, so didn't want to go further. Also reduced amount of traction compound on front to 3/4 instead of full fronts. Still has slight mid corner push. Additional front camber helped, but will probably play with roll centers and link lengths next time out. Also want to get some 4mm shims for the front axle/hex play...
SUPER pleased with the car, can't wait to get back out next weekend!
Seth
Ran the PF Dodge Dart in the initial shakedown a week ago and in practice yesterday before the first qualifier. Finished painting an LTCR last week, which is what I generally use, but hadn't tried the Dodge Dart yet. Ran the LTCR in the first qualifier and will definitely continue to run it. Slightly smoother feeling overall...Dart felt darty (pun intended) and "on edge" a lot of the time. LTCR smoothed this out a lot.
Made a few minor changes from the kit setup. Camber, shock locations, shock oil and other minor odds and ends....setup sheet attached for reference. Edit: File too large to upload. (Thanks RCT) Check here: https://app.box.com/s/g2znbah20s018986v5d446s0mjc4dmmw
I believe the track took video of the main...I'll post it up if they post it. Results sheet is attached. The track doesn't use MyLaps transponders, only the I-Lap system, so I had to use a rental for the time being.

Geared 42/104 (64P) and motor temps were in the 130s. Pulled most others ever so slightly on the straights but most of the time gained was in the infield which is fairly technical. I am running a Yeah Racing fan on the motor. Can probably go up another tooth or two, but we will see when I get some more time on the track.
Loosened rear belt 1 notch. Perfect tension for 13.5 here. Don't believe looser will work...
Things that I'd like to correct with the setup:
Still has slight "edginess" feel to it. Have to be gentle on the steering and the car is quick. Too rough on the steering and you'll get a lot of skid, but doesn't really spin out until you try and correct for it. Additional rear camber over front camber seemed to help here, but starting to hurt mid-corner steering, so didn't want to go further. Also reduced amount of traction compound on front to 3/4 instead of full fronts. Still has slight mid corner push. Additional front camber helped, but will probably play with roll centers and link lengths next time out. Also want to get some 4mm shims for the front axle/hex play...
SUPER pleased with the car, can't wait to get back out next weekend!
Seth
Last edited by 3D-Seth; 11-08-2015 at 06:40 PM.
#243

coming from offroad, not knowing much about bodies, and such.. the last 5 or so months of racing.. i have done some testing..
my go to body is the LTCR.. like Seth said.. the dart is ok, but the LTCR seems to just be that bit better.. to me.. the Dart seems better as the traction goes up.. when its green, or slick, the dart loses the rear, or oversteers. with it getting colder, and going indoors i think the dart may come into its own. But sofar.. this is my list
1. LTCR
2. Speed6, or Dodge Dart, close between here
3. Mazda GX
my go to body is the LTCR.. like Seth said.. the dart is ok, but the LTCR seems to just be that bit better.. to me.. the Dart seems better as the traction goes up.. when its green, or slick, the dart loses the rear, or oversteers. with it getting colder, and going indoors i think the dart may come into its own. But sofar.. this is my list
1. LTCR
2. Speed6, or Dodge Dart, close between here
3. Mazda GX
#244

I just bought the Xray for speedruns. Do you guys have any tips on which motor and ESC combos to use for that?
#245
Tech Rookie

I'm building a T4 2016 and was wondering if the rear outdrives supplied with the kit would work ok with an 8.5?
#246
#248
Tech Rookie

I ordered a set of spring steel outdrives for the front is that one of the first upgrades you recommend?
#249

That seems to vary by user preference. I run the stock plastic outdrives with no issues to report. A very hard hit might break one but that's really not a big issue to bother replacing them IMO.
#250
Tech Adept

If you are running modified I would go with the steel outdrives as these are much stronger. For stock where you need to take the most out of your motor I would stick with composite outdrives, thus keeping the drivetrain as light as possible.
#251
Tech Rookie

I'm working on my build and I'm wondering if I can use the aluminum servo saver arms with the graphite steering plate?
#253
#254
#255

The spring steel outdrives are one of the upgrades I install while building a new kit, doesn't matter if running a boosted 4.5 or a 17.5. Much more solid and reliable than composite or even aluminum. I've seen composite shatter, and aluminum bend.
The only time I might use composite over the spring steel is if I was running 13.5 or slower at a track that didn't have solid boards. Most tracks in the U.S., especially carpet tracks, aren't setup that way though.
The only time I might use composite over the spring steel is if I was running 13.5 or slower at a track that didn't have solid boards. Most tracks in the U.S., especially carpet tracks, aren't setup that way though.