Share your 17.5 blinky setup
#31
can i ask for some gearing help?
now:
losi xxx-sct
tekin rs blinky
reedy sonic 17.5
stock timing 20 degrees
78/23
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track
i think i need to go to a smaller spur gear. my motor was toasty after a 10 min run. i was getting killed on the straight by a tekin 17.5. what fdr should i aim for and why?
now:
losi xxx-sct
tekin rs blinky
reedy sonic 17.5
stock timing 20 degrees
78/23
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track
i think i need to go to a smaller spur gear. my motor was toasty after a 10 min run. i was getting killed on the straight by a tekin 17.5. what fdr should i aim for and why?
#32
Tech Initiate
SC10
Tekin RS ESC, Sensored-only mode
Tekin Redline 17.5
14deg can timing
25/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Good top-end but mediocre punch-accel
145-155F after 8 min A main
Arrma Fury
Castle MMP w/BEC
Orion 17.5
Stock timing
24/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Great accel, very torquey feeling, good top-end
140-145F after 8 min A main
Tekin RS ESC, Sensored-only mode
Tekin Redline 17.5
14deg can timing
25/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Good top-end but mediocre punch-accel
145-155F after 8 min A main
Arrma Fury
Castle MMP w/BEC
Orion 17.5
Stock timing
24/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Great accel, very torquey feeling, good top-end
140-145F after 8 min A main
#33
Tech Elite
iTrader: (54)
can i ask for some gearing help?
now:
losi xxx-sct
tekin rs blinky
reedy sonic 17.5
stock timing 20 degrees
78/23
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track
i think i need to go to a smaller spur gear. my motor was toasty after a 10 min run. i was getting killed on the straight by a tekin 17.5. what fdr should i aim for and why?
now:
losi xxx-sct
tekin rs blinky
reedy sonic 17.5
stock timing 20 degrees
78/23
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track
i think i need to go to a smaller spur gear. my motor was toasty after a 10 min run. i was getting killed on the straight by a tekin 17.5. what fdr should i aim for and why?
http://www.gearing.rcgearhead.com/Gearing/Browse If you put in the XXX-SCT at this link with say a Novak Ballistic 17.5 motor it will also tell you very near 7 for FDR....interestingly if you put in the Tekin Redline 17.5 it will say 8.34 FDR. I have no clue how that thing picks the FDR.
#34
Tech Initiate
can i ask for some gearing help?
now:
losi xxx-sct
tekin rs blinky
reedy sonic 17.5
stock timing 20 degrees
78/23
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track
i think i need to go to a smaller spur gear. my motor was toasty after a 10 min run. i was getting killed on the straight by a tekin 17.5. what fdr should i aim for and why?
now:
losi xxx-sct
tekin rs blinky
reedy sonic 17.5
stock timing 20 degrees
78/23
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track
i think i need to go to a smaller spur gear. my motor was toasty after a 10 min run. i was getting killed on the straight by a tekin 17.5. what fdr should i aim for and why?
And going down on your spur will drop the gear ratio, putting more load on the motor. This would increase your temps.
#35
SC10
Tekin RS ESC, Sensored-only mode
Tekin Redline 17.5
14deg can timing
25/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Good top-end but mediocre punch-accel
145-155F after 8 min A main
Arrma Fury
Castle MMP w/BEC
Orion 17.5
Stock timing
24/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Great accel, very torquey feeling, good top-end
140-145F after 8 min A main
Tekin RS ESC, Sensored-only mode
Tekin Redline 17.5
14deg can timing
25/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Good top-end but mediocre punch-accel
145-155F after 8 min A main
Arrma Fury
Castle MMP w/BEC
Orion 17.5
Stock timing
24/75 gear ratio
CRC 65C 5600 mAh 2S LiPo
Great accel, very torquey feeling, good top-end
140-145F after 8 min A main
#36
Tech Initiate
try a 23t pinion and see if u like the torque and if u can live with the drop off of top end well at the same time you can advance the timing on the can accordingly, if it is too much of a drop try a 24t well at the same time do the same with the timing advance on the can again until the truck is performing according to the track layout. i use to tune the motor and gearing to temp but now i just do it to how it perform to the layout. if my truck is coming off the track kool (120-140) but is maxed out top end just almost at the end of straight and the bottom end is good enough to make the jumps all the way until the end of the race then there is really no need to gear up just for what, a few more feet of the straight and then have to swing a lil wider to make the jumps ...........naw i like good bottom end on a sc and enough top to stay with anybody not neccesarily pass em in the straight. if im geared like this i can beat em in the infield cause i can cut turns shorter and dnt need near as much run start on jumps to make em and im a lot faster out of corners man. i drive fairly aggressive
I will try advancing the timing some more as you suggest.
#37
Tech Champion
iTrader: (32)
I've tried a higher ratio (smaller pinion) on the tekin redline 17.5 but then it gets really doggy on the straightaway. compared to my orion 17.5 the tekin is just way slower all around. one problem with these darn brushless motors is that they last too long so I don't have a reason to buy another one!! haha.
I will try advancing the timing some more as you suggest.
I will try advancing the timing some more as you suggest.
#38
Tech Initiate
How old is the rotor in your Tekin? If you've over heated it a few times it will be down on bottom end but great on the top end. I fresh new rotor might solve your issue. If the rotor is fairly new then you havent found the sweet spot between motor and gearing. I'll See what the guys here are gearing their SC's and get back to you.
#40
Tech Initiate
thx dude!!
#41
Tech Champion
iTrader: (32)
Different size rotors are tuning options. Take your rotor out and measure it with a set of calipers. 12.3 is more of an rpm rotor and 12.5 would be a little less rpm but more bottom end punch. If you bought the motor new only a few months ago it should have a 12.5mm rotor in it. Once you verify the rotor we can try to get to the bottom of your issue.
#42
How hot was the motor after the race? I ran a similar fdr on my sonic when i was running it blinky but with 45 degrees on the can. It came off at 160 after a 10 minute main which is still good and safe. That was also in mid 90 degree weather. And I was racing against boosted tekins and yes they were faster in the strait but not enough to pass me. That's on about a hundred foot strait.
our track is indoor clay with a nice long hundred foot plus straight. i think it's 105ft. it gets to be at least 80 in the building during the day lately.
with the gearing i have now it can keep up on the straight, but i wont be passing anyone. it also jumps pretty good and if i line up i can clear most of the jumps.
I have the same truck and it was suggested by Casper to go 26/76 for 17.5 blinky. FDR around .
http://www.gearing.rcgearhead.com/Gearing/Browse If you put in the XXX-SCT at this link with say a Novak Ballistic 17.5 motor it will also tell you very near 7 for FDR....interestingly if you put in the Tekin Redline 17.5 it will say 8.34 FDR. I have no clue how that thing picks the FDR.
http://www.gearing.rcgearhead.com/Gearing/Browse If you put in the XXX-SCT at this link with say a Novak Ballistic 17.5 motor it will also tell you very near 7 for FDR....interestingly if you put in the Tekin Redline 17.5 it will say 8.34 FDR. I have no clue how that thing picks the FDR.
---
what determines the fdr? the way the motor is made and the transmission ratio on your rc? im thinking thats it...
#43
Tech Fanatic
iTrader: (5)
Vehicle: Team Associated B4.1 Factory Team
Motor: Trinity/Epic Duo2
Motor Timing: 8
Gear: 31/69
FDR: 5.78
Track size: Medium/Large (~100' straight)
This setup is really good down the straight, but lacks the low end power that the Schuur Speed 17.5 has. The car is worn and the motor is old, but it is still within .4 seconds of my best lap with the X Factory X-6 Squared.
Vehicle: X Factory X-6 Squared (Associated transmission)
Motor: Schuur Speed 17.5
Motor Timing: 30
Gear: 33/72
FDR: 5.67
Track size: Medium/Large (~100' straight)
I don't want to change anything with this setup. If it weren't for other mechanical issues with my buggy I would have been solidly in the top half of the A main (after starting almost last in the B main). 3 stripped wheels and a broken CVD dog bone forced me to my backup car (B4.1 FT) for the A main, and then I broke that 2 minutes in. Bad night of RC even though my X was crazy good.
Vehicle: X Factory SCX-60CF (Associated transmission)
Motor: Tekin RS 17.5
Motor Timing: 12
Gear: 27/75
FDR: 7.22
Track size: Medium/Large (~100' straight)
With the Tekin motor I cannot gear it as high as I need to because of temperatures. At 27/75 I'm temping at ~140F, but at 28/75 or 27/72 I'm near 170F. This week I'll be trying out a new rotor (12.5mm stock legal high torque) which should give me more power with less timing, and with any luck it will be cool enough to add some gear. I'm getting killed on the straight but am making it all up in the infield (good enough for a podium finish my first run with a stock short course, anyway).
#44
soooo after a few expensive lessons in gearing, i am here now:
losi xxx-sct - went from ball diff to gear diff
tekin rs blinky
tekin redline 17.5 w/ 12.5mm ht rotor
no can timing
76/28
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track, long 90' - 100' straight
we just ran jbrl rd 6.
after 6 min run, motor is luke warm. esc is cold. i am thinking i can go up a pinion or two....or maybe add some timing. any suggestions anyone? should i gear up or add timing? she's a little slow on the straight, but the motor runs a lot nicer than the sonic.
losi xxx-sct - went from ball diff to gear diff
tekin rs blinky
tekin redline 17.5 w/ 12.5mm ht rotor
no can timing
76/28
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track, long 90' - 100' straight
we just ran jbrl rd 6.
after 6 min run, motor is luke warm. esc is cold. i am thinking i can go up a pinion or two....or maybe add some timing. any suggestions anyone? should i gear up or add timing? she's a little slow on the straight, but the motor runs a lot nicer than the sonic.
#45
Tech Fanatic
iTrader: (5)
soooo after a few expensive lessons in gearing, i am here now:
losi xxx-sct - went from ball diff to gear diff
tekin rs blinky
tekin redline 17.5 w/ 12.5mm ht rotor
no can timing
76/28
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track, long 90' - 100' straight
we just ran jbrl rd 6.
after 6 min run, motor is luke warm. esc is cold. i am thinking i can go up a pinion or two....or maybe add some timing. any suggestions anyone? should i gear up or add timing? she's a little slow on the straight, but the motor runs a lot nicer than the sonic.
losi xxx-sct - went from ball diff to gear diff
tekin rs blinky
tekin redline 17.5 w/ 12.5mm ht rotor
no can timing
76/28
thunder power g6 pro race 5300 65c 2s
sdrc raceway: med to high bite indoor off road clay track, long 90' - 100' straight
we just ran jbrl rd 6.
after 6 min run, motor is luke warm. esc is cold. i am thinking i can go up a pinion or two....or maybe add some timing. any suggestions anyone? should i gear up or add timing? she's a little slow on the straight, but the motor runs a lot nicer than the sonic.