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R/C Tech Forums Thread Wiki: TLR 22 3.0 Race Kit Thread!
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Cub86 posted the question: Hi. I'm struggling to understand the lay down situation. I run on high bite damp smooth clay and think the conversation would help on my surface but from what I'm reading I need to buy the lay down kit tlr338004. And the dirt gear case tlr332063. But do I really need both from what I've read the dirt case is 1-2mm higher anyway and u don't use the +3mm hubs or the front pivot hrc or Hrc mod. So is the dirt lay down kit tlr332063 is all that's needed to get me a lay down set up that's suited for clay With the components and car I already have. And if I only get the dirt case is there any problems that will need to be addressed IE.. bone plunge . I do know I'll need 1mm spacers on the waterfall to clear the battery. Thanks guys really trying to get my head around this.

Franks response:
Laydown Conversion will work great by itself. You run the aluminum +3mm hubs, the diff is +3.5mm, and you run the HRC front setup. Just follow a setup sheet from tlracing.com (Frank Root).

Dirt Tranny has the diff at the same height as the standard tranny case, and works with the standard plastic hubs. Both are +/- 0mm from stock. When you run this, no need to run the HRC front mod either.

I've found the stock laydown conversion parts to work great for most tracks. The dirt tranny is a great tuning option, but definitely not 'required'.

K.King
Something I made, pretty basic. Just to give people an idea.

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Old 01-06-2016, 07:27 AM   #1426
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Ok thanks for that info Casper. Just so I'm clear, you took out 2 of the 4 smaller gears inside the diff?
Correct
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Old 01-06-2016, 12:54 PM   #1427
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I have been running a gear diff. I am currently at 2 gear and 20K (take out one set of the spider gears to increase oil volume).

Seems to work pretty well. Need to do some back to back testing but this seems to work pretty well for me so far.
I run the same but on carpet 20k makes the car push, so I run 3k.
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Old 01-06-2016, 03:54 PM   #1428
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As long as you keep both wheels on the ground all the time that would be fine but that is a really loose diff. Not saying it is wrong but supersized to hear you like it that light with a 2 gear setup.

With a 4 gear setup I would be in the 7K range.
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Old 01-06-2016, 04:15 PM   #1429
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Just to confirm, for installing a Spektrum 6240 servo, do I use a 2mm and .5mm shim plates or just the 2mm plates? I'm getting the servo this week and I just want to make sure I have the proper shims in place.
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Old 01-06-2016, 04:18 PM   #1430
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Just to confirm, for installing a Spektrum 6240 servo, do I use a 2mm and .5mm shim plates or just the 2mm plates? I'm getting the servo this week and I just want to make sure I have the proper shims in place.
I used the 2mm and the .5mm. You just want to make sure the drag link is perpendicular to the chassis.
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Old 01-06-2016, 07:25 PM   #1431
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Originally Posted by Jack Bonhomme View Post
Just to confirm, for installing a Spektrum 6240 servo, do I use a 2mm and .5mm shim plates or just the 2mm plates? I'm getting the servo this week and I just want to make sure I have the proper shims in place.
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I used the 2mm and the .5mm. You just want to make sure the drag link is perpendicular to the chassis.
Matt has it right.

Frank posted the image below either on Facebook or in the thread, not sure exactly where but here it is for your reference.


I included it in the article I wrote which can be found by clicking here. Hopefully someone will get at least one thing out of it.
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Old 01-07-2016, 07:25 AM   #1432
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For the guys running the Losi gear diff, I hear they can leak. Are you guys running different O-rings?
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Old 01-07-2016, 07:39 AM   #1433
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Does the shimming of the servo have an affect on handling or is it just for spacing sake alone. We both use the 6260 servo and my son used the 2+.5 and I only used the 2 (he had his built before me and I seen the spacing, that is why I opted to omit the .5 spacer on mine). With the .5 shim on his installed, it puts the servo arm (we use the aluminum TLR one) almost to close to the rack as where mine looks to have just the right amount of spacing from the arm to the rack but he was helping me with my setup and driving my car and he said that for some reason, my cars steering was way super sensitive but both our cars are exactly the same, equipment and setup wise but he said that his wasn't near as sensitive. We looked over both cars and the only difference we could see was the servo spacers being different? Could this cause the over sensitivity? I can't hardly imagine that it would as I have never really seen servo spacing utilized as a tuning option.
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Old 01-07-2016, 07:57 AM   #1434
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Does the shimming of the servo have an affect on handling or is it just for spacing sake alone. We both use the 6260 servo and my son used the 2+.5 and I only used the 2 (he had his built before me and I seen the spacing, that is why I opted to omit the .5 spacer on mine). With the .5 shim on his installed, it puts the servo arm (we use the aluminum TLR one) almost to close to the rack as where mine looks to have just the right amount of spacing from the arm to the rack but he was helping me with my setup and driving my car and he said that for some reason, my cars steering was way super sensitive but both our cars are exactly the same, equipment and setup wise but he said that his wasn't near as sensitive. We looked over both cars and the only difference we could see was the servo spacers being different? Could this cause the over sensitivity? I can't hardly imagine that it would as I have never really seen servo spacing utilized as a tuning option.
The link should be perpendicular to the chassis. Omitting that .5mm shim will not have a drastic impact in setup. Could just be different drivers feel different things. Did you try his or are you going off his feel? While setup otherwise may be exactly the same I doubt tires and driving style are exactly the same.
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Old 01-07-2016, 09:13 AM   #1435
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My understanding is the single purpose of the spacers is to orient the various available servos in a way that prevents any steering parts from interfering with each other in the small available space. The small available variance (ie. works with 2mm or 2.5mm without interference) should not effect handling at all.
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Old 01-07-2016, 09:39 AM   #1436
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I ran the car last night with the 20 kick spacer. It had more steering and seemed to keep the back end locked in a bit better under heavy breaking.
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Old 01-07-2016, 09:47 AM   #1437
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Originally Posted by onadcr74 View Post
Does the shimming of the servo have an affect on handling or is it just for spacing sake alone. We both use the 6260 servo and my son used the 2+.5 and I only used the 2 (he had his built before me and I seen the spacing, that is why I opted to omit the .5 spacer on mine). With the .5 shim on his installed, it puts the servo arm (we use the aluminum TLR one) almost to close to the rack as where mine looks to have just the right amount of spacing from the arm to the rack but he was helping me with my setup and driving my car and he said that for some reason, my cars steering was way super sensitive but both our cars are exactly the same, equipment and setup wise but he said that his wasn't near as sensitive. We looked over both cars and the only difference we could see was the servo spacers being different? Could this cause the over sensitivity? I can't hardly imagine that it would as I have never really seen servo spacing utilized as a tuning option.
It is just for clearance, no setup tuning.
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Old 01-07-2016, 09:59 AM   #1438
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I ran the car last night with the 20 kick spacer. It had more steering and seemed to keep the back end locked in a bit better under heavy breaking.
Interesting. Did you change caster to accommodate the kick-angle change?
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Old 01-07-2016, 10:16 AM   #1439
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Nope, but I did change lots of other things. Down to 1 degree of AS, changed front shocks to inner holes on both the tower and arm and rear shocks to the outer hole on both the tower and the arm. Also running the long VLA position.
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Old 01-07-2016, 12:51 PM   #1440
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For the guys running the Losi gear diff, I hear they can leak. Are you guys running different O-rings?
I just put mine in the other night and I put the Kyosho P5 O-rings in per recommendation from others around here. Haven't broken it open to see how it fared yet.
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