34LikesSchumacher Mi5
05-28-2013, 11:50 AM
#361
Tech Adept
I just finished doing all the math around running a shorty pack and the ESC on the right side of the car last night, and the math just doesn't pan out. (at least with the weight of my electronics) I figured I would have to add ~60 grams of weight to make minimum weight running a shorty. And while that does give you the opportunity to get to dead minimum weight, and at the appropriate corners, I would much rather have 2500 more mah, and be 40 grams over.
(100 gram difference between full and shorty. 60 under with shorty, 40 over with full)
It has always been my school of thought to do your best to reach weight using higher mah, than stick-on-weights. The voltage drop advantage of using a higher mah better will be beneficial in the later minutes of a race, in a spec class. YMMV
-CPT
(100 gram difference between full and shorty. 60 under with shorty, 40 over with full)
It has always been my school of thought to do your best to reach weight using higher mah, than stick-on-weights. The voltage drop advantage of using a higher mah better will be beneficial in the later minutes of a race, in a spec class. YMMV
-CPT
And u can weight up the corners better
I started with 5000 25c lipo's (bk in 2009) and was just as fast as the
Boys using 5400 40-50c , so battery size isn't everything and these are
4600 80c so I am only loosing 400 and I only pull 1300-1600 out of my lipo's
an 2700 if I ran 13.5t boosted so they are fine for 17.5-13.5t if ur running mod motors then I would run full fat lipo's
I would like to add I was running 6000 70c lipo's before and found these are just as good but 100g lighter so I have lowered my lap times by taking weight away
Car corners better
05-28-2013, 12:35 PM
#362
I got the internal ratio incorrect. I had suggested a 66t 48dp spur for 17.5 blinky but a 70T would be better.
Every car has a min/max total tooth count. For the Mi5 the Min in 48dp that is 100 total teeth or 66 spur + 34 pinion = 100. That gives you a 3.49 final drive ( (66/34) x 1.8 = 3.49 ) which is too tall for small tracks.
You want to be in the 4.0 to 3.6 range for a small track in 17.5 Blinky. That is a 70T spur with 43-48t pinions.
Every car has a min/max total tooth count. For the Mi5 the Min in 48dp that is 100 total teeth or 66 spur + 34 pinion = 100. That gives you a 3.49 final drive ( (66/34) x 1.8 = 3.49 ) which is too tall for small tracks.
You want to be in the 4.0 to 3.6 range for a small track in 17.5 Blinky. That is a 70T spur with 43-48t pinions.
05-28-2013, 12:52 PM
#363
Tech Adept
I got the internal ratio incorrect. I had suggested a 66t 48dp spur for 17.5 blinky but a 70T would be better.
Every car has a min/max total tooth count. For the Mi5 the Min in 48dp that is 100 total teeth or 66 spur + 34 pinion = 100. That gives you a 3.49 final drive ( (66/34) x 1.8 = 3.49 ) which is too tall for small tracks.
You want to be in the 4.0 to 3.6 range for a small track in 17.5 Blinky. That is a 70T spur with 43-48t pinions.
Every car has a min/max total tooth count. For the Mi5 the Min in 48dp that is 100 total teeth or 66 spur + 34 pinion = 100. That gives you a 3.49 final drive ( (66/34) x 1.8 = 3.49 ) which is too tall for small tracks.
You want to be in the 4.0 to 3.6 range for a small track in 17.5 Blinky. That is a 70T spur with 43-48t pinions.
05-28-2013, 01:05 PM
#365
I got the internal ratio incorrect. I had suggested a 66t 48dp spur for 17.5 blinky but a 70T would be better.
Every car has a min/max total tooth count. For the Mi5 the Min in 48dp that is 100 total teeth or 66 spur + 34 pinion = 100. That gives you a 3.49 final drive ( (66/34) x 1.8 = 3.49 ) which is too tall for small tracks.
You want to be in the 4.0 to 3.6 range for a small track in 17.5 Blinky. That is a 70T spur with 43-48t pinions.
Every car has a min/max total tooth count. For the Mi5 the Min in 48dp that is 100 total teeth or 66 spur + 34 pinion = 100. That gives you a 3.49 final drive ( (66/34) x 1.8 = 3.49 ) which is too tall for small tracks.
You want to be in the 4.0 to 3.6 range for a small track in 17.5 Blinky. That is a 70T spur with 43-48t pinions.
I can't wait to start building My kit should be arriving sometime today
05-28-2013, 02:47 PM
#366
Tech Adept
05-28-2013, 03:35 PM
#367
Tech Initiate
That looks good ...whats your procedure ...just sanding and painting....what type of paint?
That looks striking Scott but what's with the purple wheel hexes. Surly they should be black or in your case white.
It looks like something out of Tron, the movie... does it glow in the dark?
05-28-2013, 04:50 PM
#368
Just a little tidbit of information
For those who are running 17.5's or 13.5's on shorter tracks. If you want to achieve maximum rip out down the straights, infield and corners, adjust your FDR as discussed by Adrian M, and also adjust your radio settings with a more positive curve band. If you haven't done this already, you will see a huge difference in motor performance. Trust me 
.
I really wish I could get my hands on one of these chassis'.
. I really wish I could get my hands on one of these chassis'.
05-28-2013, 05:00 PM
#369
For those who are running 17.5's or 13.5's on shorter tracks. If you want to achieve maximum rip out down the straights, infield and corners, adjust your FDR as discussed by Adrian M, and also adjust your radio settings with a more positive curve band. If you haven't done this already, you will see a huge difference in motor performance. Trust me .
I really wish I could get my hands on one of these chassis'.
. I really wish I could get my hands on one of these chassis'.
05-28-2013, 09:09 PM
#373
Tech Regular
3 groove camber link plates front and rear
2 degree camber front and rear
Shock oil 35wt front 25wt rear
Gear diff 100wt shock oil
Double jointed front drive shafts
Sorex 32 control tyres
Mazda speed 6 shell
Stafford is a low grip track that does wear tyres quickly, hope that gives you a few things to try.
05-28-2013, 09:17 PM
#374
Tech Addict
As per build in the manual with the following changes....
3 groove camber link plates front and rear
2 degree camber front and rear
Shock oil 35wt front 25wt rear
Gear diff 100wt shock oil
Double jointed front drive shafts
Sorex 32 control tyres
Mazda speed 6 shell
Stafford is a low grip track that does wear tyres quickly, hope that gives you a few things to try.
3 groove camber link plates front and rear
2 degree camber front and rear
Shock oil 35wt front 25wt rear
Gear diff 100wt shock oil
Double jointed front drive shafts
Sorex 32 control tyres
Mazda speed 6 shell
Stafford is a low grip track that does wear tyres quickly, hope that gives you a few things to try.
05-28-2013, 10:10 PM
#375
Any T4 owners also have the mi5?