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Old 03-12-2014, 02:00 PM   #1516
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If anyone is looking for a T4 2014, PM me, I have one with ECSs, carbon arm stiffeners, and Front diff I am looking to sell.
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Old 03-12-2014, 08:10 PM   #1517
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Default mounting an LCTR body: F R positioning question

Hi all,

Am I right in assuming that the front wheels should be in the centre of the front wheel cutouts in the Protoform LCTR body? I run my '14 on medium traction asphalt modified, medium speed kind of layout.

Also, any tips for the wing setup? Forward position, back, cut down??

Thank you
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Old 03-13-2014, 03:15 AM   #1518
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Quote:
Originally Posted by Fly'n Fish View Post
Hi all,

Am I right in assuming that the front wheels should be in the centre of the front wheel cutouts in the Protoform LCTR body? I run my '14 on medium traction asphalt modified, medium speed kind of layout.

Also, any tips for the wing setup? Forward position, back, cut down??

Thank you
There's a recent post with picture answer from Alex in the Xray forum.

My position is with the wheel to the back of the cutout (more forward mounted body) I tried center mount but think it lacks steering. However both works depending on grip level etc.
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Old 03-13-2014, 03:43 AM   #1519
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This post http://forum.teamxray.com/viewtopic....33d19d1d16dc96

The first picture is mine, shown from the center line of the wheel opening. It is the same as Alex has posted below just a different view. (74.5mm from windshield line)
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Old 03-13-2014, 03:44 AM   #1520
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Quote:
Originally Posted by Fly'n Fish View Post
Hi all,

Am I right in assuming that the front wheels should be in the centre of the front wheel cutouts in the Protoform LCTR body? I run my '14 on medium traction asphalt modified, medium speed kind of layout.

Also, any tips for the wing setup? Forward position, back, cut down??

Thank you
Alex Hagberg posted this on the Xray forum;

This is how I measure it. The center of the body post to the bottom edge of the front windscreen. I usually mount my body quite a bit forward for more steering overall. I use these measurements:

LTC-R: 74.5mm
SP6: 71
GX: 74.5

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Old 03-13-2014, 03:45 AM   #1521
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Quote:
Originally Posted by Clegg View Post
If anyone is looking for a T4 2014, PM me, I have one with ECSs, carbon arm stiffeners, and Front diff I am looking to sell.
Out of interest, what car have you changed to?
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Old 03-13-2014, 09:19 AM   #1522
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Quote:
Originally Posted by Skiddins View Post
Alex Hagberg posted this on the Xray forum;
Quote:
This is how I measure it. The center of the body post to the bottom edge of the front windscreen. I usually mount my body quite a bit forward for more steering overall. I use these measurements:

LTC-R: 74.5mm
SP6: 71
GX: 74.5
Well, that's interesting. My typical mount is about 4 to 4.5mm back from that, closer to body flush with RSD bumper, I should try this. Can anyone speak to the difference it makes and where (i.e. low speed, sweepers, etc...)? I suspect mostly in the higher speed sections.
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Old 03-13-2014, 10:37 AM   #1523
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Originally Posted by chasingthepack View Post
itll be interesting to see how that affects the handlng,whats the weight of it?
It's 3.8 gram. Haven't got the chance to try it at the track so i can't tell how it feels.
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Old 03-13-2014, 11:38 AM   #1524
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Originally Posted by erchn View Post
Well, that's interesting. My typical mount is about 4 to 4.5mm back from that, closer to body flush with RSD bumper, I should try this. Can anyone speak to the difference it makes and where (i.e. low speed, sweepers, etc...)? I suspect mostly in the higher speed sections.
My take on it is the fact that by moving the body forward, you are essentially making the rear overhang of the car shorter (and the wing come forward as well). This should allow for the car to rotate much quicker in the middle to the exit of the corner. In contrast, the longer front should make the car have a smidge more turn-in, but it will have a harder time coming back to center due to the increased inertia of the body.

In a perfect world, I guess if I were designing a body, I would make a shorter front overhang with more downforce and a shorter rear overhang for more rotation. This would allow for quicker rotation (from less overhang in the rear) and quicker direction change from a shorter front end.
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Old 03-13-2014, 01:20 PM   #1525
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I would suspect, that mounting the Body more to the front changes the Downforce distribution between front and back towards less rear df and more front df. In rc words: more steering. Especially in high speed turns.
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Old 03-13-2014, 04:17 PM   #1526
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Originally Posted by Skiddins View Post
Out of interest, what car have you changed to?
Clegg has photos off the xray for sale and what I assume to be the replacement awesomatix on his website....
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Old 03-13-2014, 04:27 PM   #1527
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Quote:
Originally Posted by Skiddins View Post
Alex Hagberg posted this on the Xray forum;

This is how I measure it. The center of the body post to the bottom edge of the front windscreen. I usually mount my body quite a bit forward for more steering overall. I use these measurements:

LTC-R: 74.5mm
SP6: 71
GX: 74.5

Thanks skiddins. Alex Hagberg, I guess he knows what he is on about so I will go with that
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Old 03-13-2014, 04:56 PM   #1528
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Does anyone have the exact spacings for the body posts handy. If Alex Hagberg has given us the front overhang then just need to get the body post spacing to finish the job perfectly. I could measure them but it won't be as neat as having the exact spec, precise kind of work. Also I am wondering how accurate my body reamer is, I mean if you ream from a spot is it exactly centre of should I make a cross hair to make exactly sure. I know I can put a bit of pressure on a side to get it to run that way....

Thanks
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Old 03-13-2014, 05:09 PM   #1529
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Does anyone know where I can get a good explanation of the new roll centers on the '14? The old setup book only still covers a pretty old model.
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Old 03-13-2014, 06:08 PM   #1530
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Quote:
Originally Posted by Fly'n Fish View Post
Does anyone have the exact spacings for the body posts handy. If Alex Hagberg has given us the front overhang then just need to get the body post spacing to finish the job perfectly. I could measure them but it won't be as neat as having the exact spec, precise kind of work. Also I am wondering how accurate my body reamer is, I mean if you ream from a spot is it exactly centre of should I make a cross hair to make exactly sure. I know I can put a bit of pressure on a side to get it to run that way....

Thanks
How many cutting blades does your reamer have? I have a single blade dynamite that doesn't stay centered well, and I have a TRF one with two blades that seems to center nicely.

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