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JThiessen
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08.06.2009, 01:31 PM

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Originally Posted by lincpimp View Post
I run 30k in the diffs, but I also run heavier tires and wheels, .......Tire selection makes the biggest difference.
I've got some fairly heavy ones on it right now also - bead locks with some mulchers (not 40 series).

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Originally Posted by nitrostarter View Post
Thats they advantage of the 3 diff setup. I was able to do this with both my buggy and truggy and able to spit out faster track times.

The truggy was fun but not for me. I enjoyed racing my buggy MUCH more than the truggy for some reason. They just seemed a whole lot quicker all around and more durable.
Dude - I dont think I've been able to recall anything you've typed since you changed your avitar......


Losi 8T 1.0, Savage Flux - XL style, LST XXL, Muggy, 3.3 E-Revo Conversion and sitting outside 425hp, 831 Tq Dodge Ram Turbo Diesel. It SMOKES
   
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nitrostarter
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08.06.2009, 02:03 PM

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Originally Posted by JThiessen View Post
Dude - I dont think I've been able to recall anything you've typed since you changed your avitar......

You guys should check out Dafni's avatar. Very nice as well.


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  (#18)
Bondonutz
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08.06.2009, 03:25 PM

In my Basher LightningStadiumPro2 I'm running 30K/F, 100K/C, 50K/R so far very happy. No unloading and great steering and better climbing.


I retired from RC, now life is all about guns and long range shooting.
   
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Heavy diff oil bad for motor?
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Jesse M
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Heavy diff oil bad for motor? - 08.06.2009, 04:20 PM

I always thought that running thicker oil in the center diff and the fr/rr diffs puts more strain on the motor resulting in higher temps all around. I also thought that putting something like 120k in the CD would transfer more power to the rear wheels resulting in more wheelies, the opposite of what Brian said "taming the wheelies."

I'm running a Losi 8T with the 2200 combo and am looking for the best setup. I strickly drive on asphalt. I currently have 10/30/5 and it is accellerates very fast. Talking to engineers at Castle and others, they told me not to go much higher than 30k in the center diff due to the added strain on the motor. They also told me to go a little heavier in the rear if I am strickly bashing on asphalt-to help the rear end break loose a bit in
corners (more fun).

I have some 120k laying around, but don't want to compromise the life of the motor. I'm running 40 series road rage tires, so maximum transfer to the rear wheels is ideal.

Any help on fr/ctr/rr diff oil thickness for street bashing is appreciated?
   
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Gee
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08.06.2009, 04:25 PM

I felt that same way back when I converted my truggy. It just didn't have it for me. I was only running 4s 1515 1y at the timer. I guess I was expecting something more from the truggy vs the G3R which was the only other comparison I had for it. Well that and the way it ran with the Axial .28 on it was pretty impressive. It was fast but it wasn't quick enough I guess. I unconverted it back for now and plan on trying it again someday. I am interested in how this turns out for you Jeff.
   
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JThiessen
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08.06.2009, 05:22 PM

Quote:
Originally Posted by Jesse M View Post
I always thought that running thicker oil in the center diff and the fr/rr diffs puts more strain on the motor resulting in higher temps all around. I also thought that putting something like 120k in the CD would transfer more power to the rear wheels resulting in more wheelies, the opposite of what Brian said "taming the wheelies."
Um - the way I read Brians comments were that the higher weights would put you closer to wheelies, not less likely.

Quote:
Originally Posted by Gee View Post
I felt that same way back when I converted my truggy. It just didn't have it for me. I was only running 4s 1515 1y at the timer. I guess I was expecting something more from the truggy vs the G3R which was the only other comparison I had for it. Well that and the way it ran with the Axial .28 on it was pretty impressive. It was fast but it wasn't quick enough I guess. I unconverted it back for now and plan on trying it again someday. I am interested in how this turns out for you Jeff.
I'm fairly certain that I'll get it tuned - I have faith in oil!!!


Losi 8T 1.0, Savage Flux - XL style, LST XXL, Muggy, 3.3 E-Revo Conversion and sitting outside 425hp, 831 Tq Dodge Ram Turbo Diesel. It SMOKES
   
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Bondonutz
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08.06.2009, 05:28 PM

The thick in the center distributes the power to F&R more evenly, hardley any diff unloading in the front unless I run 5s and Really hammer on it.


I retired from RC, now life is all about guns and long range shooting.
   
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Dafni
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08.07.2009, 02:15 AM

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Originally Posted by nitrostarter View Post
You guys should check out Dafni's avatar. Very nice as well.
I salute you, right back at you


RC/DC - Brushless Conversions since 2000 !
>>>>>>>>> www.rc-dc.ch <<<<<<<<<<
   
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JThiessen
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08.07.2009, 08:43 AM

I just forgot something.....cant remember what.....


Losi 8T 1.0, Savage Flux - XL style, LST XXL, Muggy, 3.3 E-Revo Conversion and sitting outside 425hp, 831 Tq Dodge Ram Turbo Diesel. It SMOKES
   
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nitrostarter
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08.07.2009, 10:23 AM

What do you mean Mr. Thiessen?


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Finnster
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08.07.2009, 12:55 PM

What is your FDR? If you don't load the motor up enough, sometimes it feels a bit sluggish. You may want to try going up some teeth, load the motor, pull more amps and power out of the motor. My trug is geared ~12-13:1, where as I tended to have the revo geared at 15-16:1.
   
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Finnster
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08.07.2009, 12:59 PM

IDK the diff ratio for the 8t's, but I did assume a worst case 4.11 ratio, and you are in a good range. Perhaps it is more psychological then...
   
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lincpimp
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08.07.2009, 01:23 PM

I love how chics making out is ok, but an animated gif of kermie humping a stuffed bunny is a no-no....

Not that I am complaining about the chics making out, that is always welcome in my book!

As for heavy cd fluid, it will put down the power better to all 4 tires, and prevent alot of front tire wear from excessive unloading. Plus if the front tires are unloading too much, you will have heat issues with the motor. I had a half full cd with 50k in it in my muggy, and with the hacker c50 11xl temps were too high for my liking (beating 140 after a few mins) I check the cd as I could see the front tires were blowing up, even at full speed, and found it half full. I topped it off with 100k, and the motor temps came down, plus the tire ballooning was alot less. Yes, it would wheely from a standstill, but what do you expect from a 4hp setup in a 12lb truck with lots of traction? I did not notice any differnce in turning circle or steering with the thicker fluid, as it will still let the ft and rr diffs spin at different speeds off power. The heavier truggy size wheels and tires do have quite a bit of momentum, so they can overcome the heavier fluid in the CD just fine.

Keep in mind this is with a muggy, and not a truggy, but I do run regular MT badlands (taped and balanced) so tire weight should be similar. And this is mixed bashing on the street and in the grass. A slicker surface would allow more tire slip, and you could drop the CD fluid weight for better steering/turning. My mixture in the muggy CD also does well with the 1521 1y on 6s, geared 15/49.
   
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JThiessen
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08.07.2009, 03:16 PM

Quote:
Originally Posted by Finnster View Post
What is your FDR? If you don't load the motor up enough, sometimes it feels a bit sluggish. You may want to try going up some teeth, load the motor, pull more amps and power out of the motor. My trug is geared ~12-13:1, where as I tended to have the revo geared at 15-16:1.
Quote:
Originally Posted by Finnster View Post
IDK the diff ratio for the 8t's, but I did assume a worst case 4.11 ratio, and you are in a good range. Perhaps it is more psychological then...
Its 12.6:1. I've got that 48T supr that I can throw on it - other than that, I need to order some more of those long shanks.


Losi 8T 1.0, Savage Flux - XL style, LST XXL, Muggy, 3.3 E-Revo Conversion and sitting outside 425hp, 831 Tq Dodge Ram Turbo Diesel. It SMOKES
   
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Old
  (#30)
Brian
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08.07.2009, 06:47 PM

I think a losi smart diff would help as far as locking the CD on acceleration (aleast i think thats right)


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