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Old 01-13-2009, 03:12 PM   #1
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Default MyRCBox.com - Adam Drake talks Smartdiff

MyRCBox.com talked with adam Drake about the new SmartDiff. A very interesting interview.

Read full interview here -> http://www.myrcbox.com/manufacturers.../smartdiff.htm
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Old 01-13-2009, 03:18 PM   #2
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nice article!!
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Old 01-13-2009, 05:10 PM   #3
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Thanks, Drake has been really generous with his answers!
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Old 01-13-2009, 05:35 PM   #4
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That has the same principle operation as the STM slipper clutch in my Ducati. Very cool, tuning options are unlimited if you can vary the degree of the ramps.
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Old 01-13-2009, 06:44 PM   #5
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I'm sure those diffs will make a difference
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Old 01-14-2009, 07:11 AM   #6
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Will they fit an MBX6???
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Old 01-14-2009, 07:27 AM   #7
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Quote:
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Will they fit an MBX6???
No, but these guys will have one for the X6 soon I'm sure:

http://www.bbfmodels.com/Tactyl.htm

They just cost a ton more. I used to run them (when they were cheaper) & they worked great.
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Old 01-14-2009, 08:02 AM   #8
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I wonder how these diffs stack up against the X-ray active diff. The desighn seems similar. The X-ray diff deosn't have springs.

Its weird that both have been used, with good results, with just grease or oil in the diffs. It'll be interesting to see what the hot ticket is.

Seems most people with the X-ray diff use 2000wt silicone fluid.

Why do they recommend using it in the center first? I would think that would make the car real loose on exit? I've adjusting the fluid in my center diff just for how the car feels on power. I never thought that a loose center diff setting would help turn much. I thought the front would be the first place to try one?? What about 3 active diffs???

Any future car I get better have active diffs as an option. I'd like the front to feel like 2000 going in and 7000 going out!
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Old 01-14-2009, 08:43 AM   #9
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I would think in the centre on power it would make the car more 4WD, hence the sudden traction pulling away rather than all the power going to the end with least resistence (ie grip). Someone may correct me though, but i think i am on track...

I would love to try active on the front end particuly... i have a habit of thickening up the front to get the car pulling more, which you can get away with keeping a lot of off power steering on RC8 because of the crazy steering lock.
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Old 01-14-2009, 08:54 AM   #10
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Quote:
Originally Posted by Zerodefect View Post
I wonder how these diffs stack up against the X-ray active diff. The desighn seems similar. The X-ray diff deosn't have springs.

Its weird that both have been used, with good results, with just grease or oil in the diffs. It'll be interesting to see what the hot ticket is.

Seems most people with the X-ray diff use 2000wt silicone fluid.

Why do they recommend using it in the center first? I would think that would make the car real loose on exit? I've adjusting the fluid in my center diff just for how the car feels on power. I never thought that a loose center diff setting would help turn much. I thought the front would be the first place to try one?? What about 3 active diffs???

Any future car I get better have active diffs as an option. I'd like the front to feel like 2000 going in and 7000 going out!
I have the xray active diff. It definitely works. The off power steering is retarded (in a good way). The car turns on a dime as soon as you let off the throttle. This helps me quite a bit since I don't have brake bias being electric. You can really feel it pulling the car too when on power. I would say it will probably be well worth it if it is anything like the xray one.
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Old 01-14-2009, 10:36 AM   #11
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SWEET! Just the kind of info I was looking for in the "most agressive buggy thread."

I like alot of off power steering. But my RC8 likes 5/5/5 and 7/5/3 in its diffs. 5/7/3 worked ok but was kinda boring.

Probally getting an X-ray as my next car.

I'm really glad Losi came out with this diff, maybe AE will follow suit.

Oh, and who's copying who now?
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Old 01-14-2009, 10:42 AM   #12
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look closer and you will see although they look simular they are quite different. The ramp plates springs and the way they lock up and open are totaly different.
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Old 01-14-2009, 02:40 PM   #13
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Yup, thier different. I was just trying to stir it up a little.

I haven't seen one opened up in person yet. Does applying torque to the cross beams make them twist inside the carrier, then as they twist they ride up the ramp that pushes them together, then they hit the spidergears locking them up?

I think they are both are similar, but I bet the Losi diff is smoother thanks to the springs. I'm not sure what the Xray diff uses as a ramp. I know the ramp is on the bevel ring but I don't see what that slides on.

I hope these catch on.

Last edited by Zerodefect; 01-14-2009 at 02:55 PM. Reason: can't type well with diff fluid on my hands!
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Old 01-14-2009, 04:45 PM   #14
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Quote:
Originally Posted by Zerodefect View Post
Yup, thier different. I was just trying to stir it up a little.

I haven't seen one opened up in person yet. Does applying torque to the cross beams make them twist inside the carrier, then as they twist they ride up the ramp that pushes them together, then they hit the spidergears locking them up?

I think they are both are similar, but I bet the Losi diff is smoother thanks to the springs. I'm not sure what the Xray diff uses as a ramp. I know the ramp is on the bevel ring but I don't see what that slides on.

I hope these catch on.
The only thing I can tell is different is the Losi one has springs, otherwise they are practically identical in how they operate. Fioroni makes front, center, and rear but they are like $200 bucks a piece.

I am sure the Losi one works well. My car turns so sharp off power it is completely threw me off at first. I am talking near 180 degree turns on a dime. I actually had a problem turning into the pipes because it reacted so quickly vs the standard diff at first.
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Old 01-14-2009, 04:59 PM   #15
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The Smartdiff's street price is 90$
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