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Team CRC Xti 1/12th Scale!!

Old 03-01-2016, 06:47 PM
  #1906  
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Originally Posted by DesertRat View Post
Anyone racing modified on carpet with SXT for tire sauce, what tires do you find work best? I've been running Ulti's but I just want to hear some other opinions.
BSR 2xBlue
BSR Green
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Old 03-01-2016, 07:44 PM
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I do like the BSR sets feel but it felt like the Double Blue front compound was semi-permanently sold out. I'll probably give them another shot at some point.
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Old 03-01-2016, 07:50 PM
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Originally Posted by DesertRat View Post
I do like the BSR sets feel but it felt like the Double Blue front compound was semi-permanently sold out. I'll probably give them another shot at some point.
Ulti X-Hard may actually be a better tire at times for the heavily worn TQ rug

BSR 2x Blue, same foam as Ulti Y-Hard
BSR Green, same foam as Ulti X-Soft

Wheels are different for sure though, in dia, and flex
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Old 03-01-2016, 08:05 PM
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Originally Posted by RedBullFiXX View Post
Ulti X-Hard may actually be a better tire at times for the heavily worn TQ rug

BSR 2x Blue, same foam as Ulti Y-Hard
BSR Green, same foam as Ulti X-Soft

Wheels are different for sure though, in dia, and flex
I did not know that the Y-hard was the same foam as the 2x blue. I will keep that in mind.

I was running X-hard and X-medium over the weekend and the car seemed to take about 10 laps to run the tires in and tack up, only after that did the car feel like it could really fly and hold power through high-speed sections. I thought I was over-saucing the tires and with a shorter soak the car felt great about 2 minutes in, then went weird, it may have been my imagination or some other part but the car wasn't accelerating out of corners like it should and tended to square-up the apex. Oh well, race and learn.
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Old 03-01-2016, 08:09 PM
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Originally Posted by DesertRat View Post
I did not know that the Y-hard was the same foam as the 2x blue. I will keep that in mind.

I was running X-hard and X-medium over the weekend and the car seemed to take about 10 laps to run the tires in and tack up, only after that did the car feel like it could really fly and hold power through high-speed sections. I thought I was over-saucing the tires and with a shorter soak the car felt great about 2 minutes in, then went weird, it may have been my imagination or some other part but the car wasn't accelerating out of corners like it should and tended to square-up the apex. Oh well, race and learn.
Normally soft rear have more forward grip, less side grip

I run that same combo for stock, super stock, and on the occasions that I run in mod
With the higher temps Sun, I was soaking for 15m, and wiping at least 1 heat ahead
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Old 03-01-2016, 09:05 PM
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I've tested X-Hard, X-Medium fronts with X-Medium and X-Soft rears.

I found X-Medium front and rear would really well. However, I found reducing the front soak time to less then 10 minutes and running width of 1/3 (wiped before the race) works best for me. Anything more and it's a handful to drive.

But, my track is medium low drip using TC2+. Results may vary.
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Old 03-19-2016, 10:12 AM
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CRC Alter Ego roller and servo listed:

http://www.rctech.net/forum/r-c-item...l#post14455215
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Old 03-26-2016, 02:35 AM
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Any issues with mounting the Futaba BLS671SV servo to the XTI-WC?

I had a headache installing my older Futaba servo last time..
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Old 03-26-2016, 02:37 AM
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Any issues with mounting the Futaba BLS671SV servo to the XTI-WC?

I had a headache installing my older Futaba servo last time..
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Old 03-26-2016, 06:24 PM
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Just looking for a base setup to start with the xti-wc for 13.5. Thanks.
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Old 03-27-2016, 09:11 AM
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For 13.5, not any different then 17.5. New carpet is profoundly different then old. So for old carpet, you can practically set the car up out of the box with just a couple of changes.

Front:
5* reactive block, 1 front, 2 back
2.5 mm carbon spacer under the block
-3/4* camber, -1/2* toe
.45 spring with .25mm droop
Tall ball studs on steering arms
3.5mm r/h

Rear:
bat fwd
red spring, 25wt (I often times have a tall ball stud at the rear)
-1.5 droop on blocks
20K tubes
.50 side springs touching
3.75 r/h

blu front 40.5/ gre rear 41.5
r/o 77-82mm depending on size of track

For new carpet, tires need to be smaller and CA front sidewalls. Less camber, less toe, less caster.
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Old 03-27-2016, 12:35 PM
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Thanks so much for the info.
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Old 03-28-2016, 12:15 PM
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Originally Posted by Michael_T View Post
Any issues with mounting the Futaba BLS671SV servo to the XTI-WC?

I had a headache installing my older Futaba servo last time..
Anyone??
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Old 03-30-2016, 08:19 AM
  #1919  
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Default Reactive caster blocks?

Hi Brian, since I won't see you on Saturday, I'll ask my question here. I finally setup the CRC Xti last night. Boy were some of those setting off! I saw you setup post from a few days ago and tried to follow it as a guide. I used you Slapmaster caster gauge on the 5 degree blocks, they were originally the 10 degree one. The gauge reads 9. Am I doing something wrong or is the gauge off. The gauge appears unopened, so new. Maybe the 5 on the block means something else. They are approximately the same reading for both sides. Is something bent on the car? Any advice would be appreciated.
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Old 03-30-2016, 01:39 PM
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Dominic? That you? Only a dentist would use that handle!

All my gauges are checked for 0* prior to packaging. If you ever question one, drop a 1/8" hinge pin or a fiberglass roll over antenna into the hole and eyeball the needle to the pin. They should be lined up evenly over each other. When checking caster, I like to be within 1*/side. If its over 2*, I fix it. I replace one of the CRC plastic caster shims for 3 thin 1/8" metal shims. Yeah, they're sloppy on the hinge pin, but it doesn't effect anything. I then fine tune caster to get both sides to read even. I personally like 4-5* on old carpet. Over 6, the car starts to caster jack itself in medium grip. I suspect the new carpet to be a lot less.

9* is catastrophic amount of caster. Your car will handle poorly. If you are using the aluminum caster blocks (the red ones), they twist on the arms and create more caster. Go back to the stock plastic caster blocks. 5* reactive blocks are the best to start with. I do not normally reach for a 10* block in stock as it makes the car over-react from center and can scrub speed. Plus, 10* are harder to drive smooth. I am actually using 0* on my 17.5 car with a 2.0 spacer, 5 degrees of caster (make your shims what ever it needs to be even on both sides), -1.25 camber and then I use 3/4 to 7/8 sauce.....turns really hard for 8 minutes! My 13.5 car has 5* blocks, -3/4 camber, but with blu tires it turns plenty hard at 1/2 sauce.

Good luck this weekend!

Brian
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