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Old 12-29-2013, 01:46 PM   #931
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Why do people insist on setting up their car with, and running with, "flex"?
If your chassis is flexing surely you are taking something away from your shocks, springs and tyres? It can't be making those components work to their full potential?
Good question that bothers me too. Full size race cars live and die by their rigidity. I think what you give up on un-dampened flexing/springing you gain on controlability. TC is scale in name only, almost nothing scales from full size (the wheelbase does). The simple fact is that flex works!
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Old 12-29-2013, 04:44 PM   #932
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Yea our crummy 1/10scale shocks r nothing like the full size brothers...
hell think of it we r running the 1/10 cars at 40mph easy in scale terms they would be going 400mph..
we r able to double and sometimes tripple our full scale comparisons. So with that said we have to be doing something right .
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Old 12-29-2013, 04:45 PM   #933
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DP.
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Last edited by jlfx car audio; 12-29-2013 at 05:20 PM.
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Old 12-29-2013, 10:16 PM   #934
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Quote:
Originally Posted by RSCosworth View Post
Why do people insist on setting up their car with, and running with, "flex"?
If your chassis is flexing surely you are taking something away from your shocks, springs and tyres? It can't be making those components work to their full potential?
Running more flex in the cars not only helps make traction to our cars.

We dont run same type of rubber content on our cars like real cars.

The biggest difference in flex chassis opposed to a stiff chassis setup is if your setup if off a little or a lot with with a flex chassis it still is very drivable.
With a stiff chassis, bad setups are definately magnified!

my opinion..
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Old 12-30-2013, 01:34 AM   #935
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I've been running the top deck post without the layshaft screws (top deck shimmed up 1mm) for the past month and the car has great forward traction. But I feel my car is lazy on direction changes. Anyone else that shares this thought? And what have you done to fix this? Or is everybody running the car with the layshaft screws in the car?
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Old 12-30-2013, 02:28 AM   #936
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The center topdeck mount should make the car react faster to direction change.
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Old 12-30-2013, 05:56 AM   #937
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Originally Posted by morgoth View Post
I've been running the top deck post without the layshaft screws (top deck shimmed up 1mm) for the past month and the car has great forward traction. But I feel my car is lazy on direction changes. Anyone else that shares this thought? And what have you done to fix this? Or is everybody running the car with the layshaft screws in the car?
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The center topdeck mount should make the car react faster to direction change.
While it did seem to react more and gave more rounded steering mid corner, as the grip came up I didn't like it as it became more difficult to drive.
This was on a medium sized carpet track, but with 180 type corners, not longer 'flowing' corners.

Certainly something to try at your track, but I think most of the time I'll probably be tuning using the layshaft screws.

When I used it I didn't have the topdeck spaced up at all.
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Old 12-30-2013, 11:10 AM   #938
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Juraj Hudy needs a special project...
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Old 12-30-2013, 12:26 PM   #939
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Originally Posted by syndr0me View Post
Juraj Hudy needs a special project...
Uh oh. What are you thinking, Syn?

On the subject of the top deck/layshaft screws: I ran without all four this past weekend at Horsham with a few small tweaks to my regular setup. As was discussed previously in the thread it gives the car a wider tuning window: sort of like an oversized tennis racket with a larger sweet spot. I very much liked it with the crazy traction we had at the track. The car was excellent all day long and along with Fairtrace smashed the track record in qualifying this past weekend.

Also ran the lower suspension arm plates (F&R). I like them as well. The car feels more direct and aggressive, but not in a 'loose' sort of way. I guess 'more direct' is the easiest way to describe how they feel to me.

Have yet to try the top deck post. I'm siding with Skiddins' perception on my prediction, but will try it out in practice on Saturday.

Last edited by Jon Williams; 12-30-2013 at 06:53 PM.
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Old 12-30-2013, 12:40 PM   #940
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Quote:
Originally Posted by RCFREAK View Post
Running more flex in the cars not only helps make traction to our cars.

We dont run same type of rubber content on our cars like real cars.

The biggest difference in flex chassis opposed to a stiff chassis setup is if your setup if off a little or a lot with with a flex chassis it still is very drivable.
With a stiff chassis, bad setups are definately magnified!

my opinion..
^^This. My understanding is that there is quite a lot of flex in less sophisticated full scale race scars (think karts, lower-end stock car applications). Even in the top level race cars there is *some* chassis flex. While not ideal it's a pragmatic approach to tuning when you don't have a team of engineers to perfect your setups.

Again, after some reading on the topic it appears racers use this to broaden the tuning sweet spot. Similar concept to ours.

Last edited by Jon Williams; 12-30-2013 at 01:08 PM.
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Old 12-30-2013, 12:59 PM   #941
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Uh oh. What are you thinking, Syn?
I was thinking maybe a conversion kit for the T4'14 that gives it 4 wheel steering.
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Old 12-30-2013, 01:08 PM   #942
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Like the Awesomatix dynamic toe-in/toe-out?
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Old 12-30-2013, 03:07 PM   #943
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I finished building my car and held it up to test the motor. that works fine but I noticed when i turn the wheels at full speed, i start to get chatter. Is that common or did i build something wrong?
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Old 12-30-2013, 03:23 PM   #944
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I finished building my car and held it up to test the motor. that works fine but I noticed when i turn the wheels at full speed, i start to get chatter. Is that common or did i build something wrong?
You must not have front ECS driveshafts?
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Old 12-30-2013, 03:35 PM   #945
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You must not have front ECS driveshafts?
Nope, stock build. I didn't know they were still necessary since the change from T3 to T4. Is that what you're running with the diff up front?
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