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Old 06-09-2014, 08:10 PM   #391
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ok sorry.. i should have searched before i typed.. internal ratio is 2.0
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Old 06-09-2014, 08:12 PM   #392
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Quote:
Originally Posted by moparSRT View Post
yes, just trim it around the screw holes ... I just used some body scissors.



internal ratio on XI Sport is 2:1
so
88 / 48 X 2 = 3.66 FDR
thanks for the fast reply!!
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Old 06-10-2014, 06:43 PM   #393
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Originally Posted by ttsquirrel View Post
What is a nice inexpensive servo?
I have tried this one. Cheap and very responsive.

rcmart . com / feetech-profile-digital-metal-gear-servo-touring-carboat-p-35551 . html?cPath=1099_1025

See the car with this servo.
youtube . com / watch?v=59Q-jJgIRos

ps : sorry..I was not allowed to post url...
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Old 06-13-2014, 12:52 PM   #394
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I had started a thread about a xi vs a tc4 awhile ago. Both cars are somewhat close in price but the tc4 is a much older car. Majority of people said xi would be better that tc4. When I mentioned what I wanted to buy to the local people here where I race, everyone said dont buy either of those cars. Get xray, tamiya or associated tc6. They all said I would not be able to be competitive with the xi unless I spent tons to hop it up so just find a used car of said brands. Well even a used name brand car is 2-3 times as expensive as new xi. Not having the patience to save more money nor wanting to spend more money, I did purchase the xi. I purchased aluminum bulkheads and steering assembly also. I sure like building a new car. I hope my skills improve with the xi. As long as I can keep up, I'll be fine . I know ill never be able to beat most of these good drivers here but that because my driving skills arent the best. Cant wait to get the car finished and on the track.
TTS
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Old 06-14-2014, 03:57 PM   #395
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Default servo problem

Hey guys. I am new to the hobby, but am quite mechanically inclined. I bought this chassis and built it around two weeks ago. I also installed a savox 1251 servo as the local hobby shop guy said it was faster than the low profile savox I was going to buy. I essentially had to slightly modify the rear mounting hole and the servo is mounted further back than its supposed to be. Basically this has made the left/right steering ratio different, and I have lost some of the right steering capacity. Anyone else have this problem? I am probably going to see if they will just exchange it for the original one I was going to purchase. I appreciate any feedback.
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Old 06-14-2014, 04:34 PM   #396
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U need to offset the arm around 3mm, download the ultimate manual, they didn't print it on the sport manual.
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Old 06-15-2014, 06:00 AM   #397
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Default ultimate - xi

Quote:
Originally Posted by moparSRT View Post
U need to offset the arm around 3mm, download the ultimate manual, they didn't print it on the sport manual.
Is the Ultimate just a fully loaded(with hopups) XI?
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Old 06-15-2014, 08:32 AM   #398
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yes and no, most of the parts are interchangable exept for the chassis and bulkheads.
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Old 06-15-2014, 11:39 AM   #399
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Anyone tried and felt any difference between the old SAK-U101 front arms and the new graphite SAK-U318 front arms?

On the webshop, they say:
"Improved agility during high speed and mid corner. All team drivers reported overall improvements to their Sakura Ultimates with the new suspension components even when running the exact same setup."

I just had the first runs with my Ultimate yesterday on a local asphalt track with the factory setup.

At the first run the rear end of the car was loosing traction very easily so I removed 4 screws from the end of the top deck (2 screws left there) hoping to get some more chassis flex and also changed the top rear shock positions a little more inwards.

That helped a lot, the car felt a lot more stable, but there is a long high speed U shaped turn (starting with a straight and ends with a straight, so basically full speed throughout the turn) and the car suffered from understeer.

I did move the top front shocks inward as well (1 hole from the most inner position), that helped slightly, but it's was far from perfect.

How are you doing guys with the XIs and Ultimates on high speed turns? What's the trick?
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Old 06-16-2014, 12:24 PM   #400
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some things I would try:
- wider front / narrow rear
- roll center >> shorter and lower inner mount on rear camber link
- move arms forward moving weight more back
- softer rear spring/oil
- thicker front sway bar
- less rear droop
- more camber in rear but not more then 2*

I would not try to add more flex by removing screws ... thats just a bigger band-aid for a bad setup.
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Old 06-18-2014, 10:32 PM   #401
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ok can someone explain page 17 of the manual? apparently you are supposed to put the shocks a certain way but i cant figure out how the shocks are different and what the hell the asterisk box means. the bottom ball cap is the same for all four shocks so how can you tell what is supposed to be front and rear... im lost help
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Old 06-18-2014, 10:33 PM   #402
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also my phone no longer will bring up the rctech forum,, i get the message that my phone is not supported...WTF!!
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Old 06-19-2014, 06:18 AM   #403
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it refers to the correct side of the ball cup, not the front or rear shock.

one side of the ball cup is molded just a little bit different so its easier to snap on the ball stud
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Old 06-19-2014, 06:42 AM   #404
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Quote:
Originally Posted by moparSRT View Post
some things I would try:
- wider front / narrow rear
- roll center >> shorter and lower inner mount on rear camber link
- move arms forward moving weight more back
- softer rear spring/oil
- thicker front sway bar
- less rear droop
- more camber in rear but not more then 2*

I would not try to add more flex by removing screws ... thats just a bigger band-aid for a bad setup.
Thanks, I will try those.
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Old 06-19-2014, 09:24 AM   #405
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Quote:
Originally Posted by moparSRT View Post
it refers to the correct side of the ball cup, not the front or rear shock.

one side of the ball cup is molded just a little bit different so its easier to snap on the ball stud
ok thanks. i will inspect the ball cups more closely and try to figure it out

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