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Old 02-28-2007, 10:55 AM   #946
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Got an issue with my F103GT! It seem the front arms has play in it. Ie, if you put the car in front of you with the rear tires against your chest and grasp the front wheels with both hands; you can steer the arms assembly like you ride a bicycle! I checked the 2 tabs that sit into the holes in the chassis and there is a good amount of room there (like .5mm per side which translate to a LOT at the wheels end). Does anyone else got this slop? Whats the easiest way to remove it?
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Old 02-28-2007, 11:08 AM   #947
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That sloppy steering is ideal if you race outdoors on an slightly bumpy track, in makes the cars less nervous over the bumps
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Old 02-28-2007, 12:34 PM   #948
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Quote:
Originally Posted by NiMo
That sloppy steering is ideal if you race outdoors on an slightly bumpy track, in makes the cars less nervous over the bumps
No, it's not sloppy steering. and I don't think sloppy suspension is good for anything ever. Soft suspension and sloppy suspension are different things too. The whole front suspension mechanism (lower and upper arms, knuckles and everything) pivots like a bicycle handlebar!... So if I set the car straight; once it hits something; the car gets tweaked and wants to steer either left or right and won't drive straight...
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Old 02-28-2007, 12:46 PM   #949
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install the front suspension nice and straight and then flip the car over and fill the gaps with something that will bite into the fiberglass. Do not use CA. I used a medium threadlock and it seems to be holding up well.

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Old 02-28-2007, 01:45 PM   #950
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Quote:
Originally Posted by mtveten
install the front suspension nice and straight and then flip the car over and fill the gaps with something that will bite into the fiberglass. Do not use CA. I used a medium threadlock and it seems to be holding up well.

Mark
Now that sounds like what I'm looking for! I originally thought of epoxy or JB weld but I don't think I can remove it easily with those mediums. I got blue threadlock.. I suppose I will have to do it by thin layers? Does it dry hard enough to withstand the stresses of crash well?
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Old 02-28-2007, 01:50 PM   #951
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It hasn't shifted from impact since I filled it last week. What I did was install the front end and thenl iberally applied AE blue threadlock filling all gaps and wiped off the excess.
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Old 02-28-2007, 03:43 PM   #952
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Quote:
Originally Posted by mtveten
It hasn't shifted from impact since I filled it last week. What I did was install the front end and thenl iberally applied AE blue threadlock filling all gaps and wiped off the excess.
Awesome!.. I'll give it a try and see how it goes.. thanks!
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Old 02-28-2007, 07:07 PM   #953
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I am no expert, but if you plan on running the TCS @ Trackside, you MUST use Tamiya front springs, not fuel tubing and NO additional spring spacers. At least those were the rules for the F103 TCS class. You can always check with Tamiya directly via e-mail.

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Old 02-28-2007, 07:47 PM   #954
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Old 02-28-2007, 09:01 PM   #955
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Guys....thanks for the F103GT carpet info....that really helps, I just have to write it down and figure it out at Trackside...
414....thanks for the reminder, totally forgot there are something called "RULES" on TCS race....I thought they are all open modify class....LOL
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Old 02-28-2007, 11:03 PM   #956
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Hi Howard, good luck at this weekends TCS race! I won't be able to make it. I'm going to try and go to the one in Memphis. Does anyone know if the Memphis race is on carpet or asphalt?
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Old 02-28-2007, 11:16 PM   #957
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Memphis TCS is ran on an outdoor asphalt parking lot.., fairly smooth, and usually sprayed with a traction compound.
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Old 03-01-2007, 09:03 AM   #958
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F103GT diff question............after finish building the car, the diff feels smooth, but without running the car for any race/practice, I don't know how long does the diff smoothness will last
You guys mentioned using the extra pressure spacer (3 total instead of 2)...I will do that once I have the extra pressure spacer....however, since this car is similar to 12th scale.............does adding the thrust bearing like the slapmaster one will improve the performance of the diff....?

Also, from the Tamiya part list....I saw these 2 items where previously used on F103 diff...but exactly where are they applying those thrust bearing? And why not on F103GT...?

Item 50388



Item 53136



Thanks...
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Old 03-06-2007, 06:26 PM   #959
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Quote:
Originally Posted by 414MPH
I am no expert, but if you plan on running the TCS @ Trackside, you MUST use Tamiya front springs, not fuel tubing and NO additional spring spacers. At least those were the rules for the F103 TCS class. You can always check with Tamiya directly via e-mail.

MPH
So from the quote above it sounds like the only way to stiffen up the front is to buy the tamyia hop up tuned spring set and use the stiff springs, and the plastic spacers from the kit. Would it be TCS legal to use a taller metal tamiya spacer, or more than 2 of the 5mm metal tamiya spacers?
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Old 03-06-2007, 06:31 PM   #960
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Quote:
Originally Posted by shaggys40oz
So from the quote above it sounds like the only way to stiffen up the front is to buy the tamyia hop up tuned spring set and use the stiff springs, and the plastic spacers from the kit. Would it be TCS legal to use a taller metal tamiya spacer, or more than 2 of the 5mm metal tamiya spacers?
and why do you want to stiffen up the front?
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