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Old 08-23-2016, 10:37 AM   -   Wikipost
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'.

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

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Old 12-29-2016, 07:51 AM   #4021
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Frank, can I convert my stand up car to the spec racer for the trans. Will the outdrives fit the standard gear case or do I need a new case? Will the stock diff gear work?
The SR diff is a direct swap for the standard ball diff. Both it and the original 22 3.0 use the same transmission case. I have one in my laydown car and it fit just fine without any extra effort.

The gear and other hardware is the same between both diffs

Remember also the SR diff requires the SR driveshafts. You cannot run one without the other.
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Old 12-29-2016, 11:38 AM   #4022
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Frank,

Is there a current "go-to/baseline" (besides kit) setup for us stone-agers still running the 3-gear standup? I'm running on medium-bite dirt. The last standup setup I see from you is from last January, Reedy race.

Thanks.
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Old 12-29-2016, 12:51 PM   #4023
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Lots of setups posted here:

http://site.petitrc.com/setup/losi/S...ntyTwo3.0.html
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Old 12-29-2016, 02:06 PM   #4024
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Last edited by Medicinal Coma; 12-29-2016 at 08:13 PM.
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Old 12-29-2016, 06:23 PM   #4025
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Frank,

Is there a current "go-to/baseline" (besides kit) setup for us stone-agers still running the 3-gear standup? I'm running on medium-bite dirt. The last standup setup I see from you is from last January, Reedy race.

Thanks.

http://site.petitrc.com/setup/losi/s..._SDRC20160728/
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Old 12-30-2016, 04:26 PM   #4026
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Default Dirt Laydown Gearing

What gearing to start with a 13.5T motor? The larger idler gear makes me think I need to go lower on the pinion then the standup 3 gear recommendations.
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Old 12-30-2016, 07:26 PM   #4027
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What gearing to start with a 13.5T motor? The larger idler gear makes me think I need to go lower on the pinion then the standup 3 gear recommendations.
The final drive ratio is the same. The idler gear falls out of the calculations, so it doesn't matter if it's the bigger laydown or smaller standup idler.
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Old 12-30-2016, 08:21 PM   #4028
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What gearing to start with a 13.5T motor? The larger idler gear makes me think I need to go lower on the pinion then the standup 3 gear recommendations.
Good question.

I'm running a 13.5 Tekin redline Gen3 using the stock spur 78T/27T pinion. I feel like the motor should have more. Granted I am still in the break in process. I've had two practice days and one race night, but that was using a 26T pinion.

I know staying under 180* after ~6 min race is on the high end, especially if you have a 10 min main.

I just did a search but it wielded a thread from 2011. Any advice is appreciated.

Thanks,
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Old 12-30-2016, 08:52 PM   #4029
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Good question.

I'm running a 13.5 Tekin redline Gen3 using the stock spur 78T/27T pinion. I feel like the motor should have more. Granted I am still in the break in process. I've had two practice days and one race night, but that was using a 26T pinion.

I know staying under 180* after ~6 min race is on the high end, especially if you have a 10 min main.

I just did a search but it wielded a thread from 2011. Any advice is appreciated.

Thanks,
I am going to try a 78/24. The manual calls for a 70/25 with the stand up tranny with the smaller 27 tooth idler. I think with the larger 45 tooth idler the 24 pinion will get the gearing right. If not I can buy more pinions. Yeah!
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Old 12-31-2016, 02:39 AM   #4030
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I am going to try a 78/24. The manual calls for a 70/25 with the stand up tranny with the smaller 27 tooth idler. I think with the larger 45 tooth idler the 24 pinion will get the gearing right. If not I can buy more pinions. Yeah!
Again, the idler gear is irrelevant. It does not change the final drive ratio.
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Old 12-31-2016, 07:26 AM   #4031
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Again, the idler gear is irrelevant. It does not change the final drive ratio.
You are correct - thank you.

https://www.google.com/amp/m.wikihow.com/Determine-Gear-Ratio%3Famp%3D1?client=safari
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Old 12-31-2016, 02:39 PM   #4032
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Originally Posted by larsif View Post
I am going to try a 78/24. The manual calls for a 70/25 with the stand up tranny with the smaller 27 tooth idler. I think with the larger 45 tooth idler the 24 pinion will get the gearing right. If not I can buy more pinions. Yeah!
Thanks for the link.

Doing the math I'm running 78/27 = 2.88888
The manual calls for a 70/25 = 2.8

Seems that those gear pairings are equivalent?

FDR came to 7.02 if my math is correct?
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Old 12-31-2016, 08:44 PM   #4033
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Default 2 questions

One I know it's been talked about in here before. But I can't find it. What sway bar kits can be used on the 3.0 carpet edition ? And second can the the carpet tranny be put on spec racer kit with out drastic mods ? Thanks in advance.
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Old 01-01-2017, 05:14 PM   #4034
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One I know it's been talked about in here before. But I can't find it. What sway bar kits can be used on the 3.0 carpet edition ? And second can the the carpet tranny be put on spec racer kit with out drastic mods ? Thanks in advance.
I think folks are using the front sway bars from the SCT, but are making custom bars for the rear:

https://www.facebook.com/photo.php?f...9528386&type=1

One of the nicer home brews I've seen on the rear:
https://www.facebook.com/photo.php?f...9528386&type=1
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Old 01-02-2017, 11:47 AM   #4035
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Originally Posted by BK24 View Post
Frank,

Is there a current "go-to/baseline" (besides kit) setup for us stone-agers still running the 3-gear standup? I'm running on medium-bite dirt. The last standup setup I see from you is from last January, Reedy race.

Thanks.
If I started running stand up, I'd still try that Reedy Race setup to start.

Quote:
Originally Posted by dbracn View Post
Frank, can I convert my stand up car to the spec racer for the trans. Will the outdrives fit the standard gear case or do I need a new case? Will the stock diff gear work?
Yes, you can drop in the SR diff and driveshaft setup. You can also add the motor plate with gear cover too, as long as you are running the DDS.
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