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Old 09-16-2013, 11:16 AM   #1441
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Hey guys
I had a successful weekend with my F1, came in second, could had won, but my car flipped trying to pass a back marker!

I noticed something this weekend now that i got my car running well, with the Ride R1 rear wheels and 571 in the front, the car was lifting the inner rear wheels in a turn. I went to the hard rear side springs - up from the kit stock, and medium front tamiya springs, up from the Tamiya softs, and i didn't see a change.

I noticed with the Pits 571 & 575, the rear of the car would tend to want to spin around in a turn under braking or accelerating a little. I tried to shift the balance around, added weight in the rear, and then in the front, it helpped, but not by much.

Any ideas? tips? Really considering the exotek F104v2 Flex Chassis Set 2.5mm set with the F1 Adjustable Arm Set For F104, but at that price, i could get the Yokomo F1 and have 2 cars...
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Old 09-16-2013, 01:24 PM   #1442
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I have 45g under rear axle and no extra weight in the front.
Is your throttle curve on exponential? And weaken the braking also. When the traction is not so high I give up accel and brake for more control.
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Old 09-16-2013, 01:49 PM   #1443
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Yeah, i have the Trottle curved really soft, and my brakes are at 35%, with ABS, it's fine in a straight line, it's really when i'm into the turn.

I started reading this
http://www.thercracer.com/2013/09/ta...ew-part-3.html

The car has the same basic suspension, i wonder how much applies, as he basically had the same issue as me "he car had decided it wanted to spin whenever I lifted off the throttle completely for a tight corner."
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Last edited by Cadman1981; 09-16-2013 at 02:24 PM.
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Old 09-16-2013, 03:02 PM   #1444
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Do you have adjust the tweak of your chassis with the lateral springs ? it's a crucial setup when you car doesn't go straight under braking or accellerating.
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Old 09-16-2013, 05:56 PM   #1445
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I made sure to check the tweak between runs all the time, the rear pod was straight and aligned with the chassis, and the side spings were also just barely touching the pod
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Old 09-16-2013, 07:04 PM   #1446
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shorthen your center shock so that the rear of the pod only dips 1mm below the chassis plate on blocks. Adding weight under the rear axle along with using the heavy stock axle will also help.
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Old 09-17-2013, 10:27 AM   #1447
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Hey guys, i am not sure if this was already posted
http://rcf1blog.blogspot.ca/2013/07/...sion-sp-1.html

What does moving the links at an angle do to make it "feel more planted"?



Note, i know that is not a F104V2
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Old 09-17-2013, 12:55 PM   #1448
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From looking at the photo, my physical analysis is that ...
It has to do with leverage = distance from the center of mass.
the closely spaced attachment on the main chassis cannot prevent the rear pod from moving as effectively as in the case where the attachments are farther apart from each other on the main chassis.

If a friend of yours was holding a wheel end of the wheel barrow and you were holding the handle bars and tried twisting against each other, you would have a big advantage.

Therefore, the main chassis won't have as much command over the rear pod. It will have to let it be. And the rear pod will have more traction.



By the same principle, if the pitch shock attachment on the rear pod is raised, the rear of the car will be calmer.

Last edited by edhchoe; 09-17-2013 at 01:06 PM.
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Old 09-18-2013, 07:37 PM   #1449
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There is room on the F104v2 to move the rear links out, and put the spring ontop of the ball, like the TRF101, and exotek frame

i'm going to drill my rear stock pod and test it out
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Old 09-18-2013, 08:27 PM   #1450
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If you put the springs on top of the links the springs will be compressed/pre-loaded a lot. I think you will have to move the middle deck up using spacers or something.
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Old 09-18-2013, 08:48 PM   #1451
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Of course, 4-5mm i think, i would have to measure to be sure. Like this

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Old 09-19-2013, 08:59 AM   #1452
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What are you guys using for lipos? Im just getting into F1 and picked up a sweet used F104v2 will an Exotech setup and D3. I was checking out the Revtech Double Duce shorty. Could I get some recommendations. Price is not a consideration just performance and quality. Thanks.
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Old 09-19-2013, 09:27 AM   #1453
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Quote:
Originally Posted by Bhodi11 View Post
What are you guys using for lipos? Im just getting into F1 and picked up a sweet used F104v2 will an Exotech setup and D3. I was checking out the Revtech Double Duce shorty. Could I get some recommendations. Price is not a consideration just performance and quality. Thanks.
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Old 09-23-2013, 01:27 PM   #1454
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Does any one make Carbon lower front arms for the F104?

I know that TECH racing make a top carbon arm, similar to the TRF101, i've only see some CAD drawings, no idea if anyone sells it though
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Old 09-23-2013, 01:58 PM   #1455
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Tech Racing make a matching lower arm, part number is FCP020


It has been available for some time, but like most Tech Racing parts you will have to get it from Japan. I would suggest contacting Banzai Hobby to see if they can order it for you.
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