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Tamiya F104 Pro!

Old 12-08-2010, 01:46 PM
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Originally Posted by MantisWorx View Post
you have to use ride wheels with ride tires, i made the same mistake!
**Shakes fist**
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Old 12-08-2010, 02:05 PM
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Originally Posted by MantisWorx View Post
.....on the mantisworx front i can set my static castor to where i get enough turn in and then shim the front so maybe i can get more high speed steering. in theory it should work but i dont know if i can get enough shim under the front to make it effective.
I think you will discover that dynamically increasing caster throughout compression in a pancar will not provide the results you are looking for.

Originally Posted by Arahawak View Post
....so in layman terms, shim the rear for technical tracks and shim the front for high speed flowing track?
Shim the rear ballstud (on the F104) for more steering in both high and low speed corners. How much dynamically-decreasing-caster you choose to use is what dictates the behavior your pancar displays between high and low speed corners. However, since we're only dealing with a little tiny bit of shimming with these F104s, it's not worth nit picking, just shim the rear ballstud and move on. In comparison, most AE-style pancar front suspension have 5' and 10' choice of angle (which would be about an inch of shims under the rear ballstud on an F104!) If you have a local oval track nearby, talk with those racers about why they run dynamic caster on one side of the car but not the other.
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Old 12-08-2010, 03:15 PM
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thats interesting thanx but i do have a question (flame suit on!) how is shimming the rear going to give you both high and low speed steering over not shimming? once again, not trying to start an argument. as a matter of fact just PM me please!
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Old 12-08-2010, 03:54 PM
  #3979  
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At the highest speed parts of the corner, entry and exit, the suspension is compressed the least so it retains much if not all of it's static caster giving it more high speed steering. When you hit the slow part of the corner, apex, the suspension compresses decreasing the caster on that side of the car which increases the steering at low speeds. Shimming the rear ball increases the change in caster giving you more mid corner steering. This allows you to run more caster to start with than you would have otherwise...thus increases both high and low speed steering.
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Old 12-08-2010, 04:06 PM
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^^^give that man a ceeeeggaaarrr-
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Old 12-08-2010, 04:32 PM
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Originally Posted by MantisWorx View Post
i agree with both of you????? i was just clarifying it for those who dont understand(arahawk). i did try it and it does work! there is no argument here at all GEEESH!
Haaa.. hey guys.. dun blame him .. blame me!!
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Old 12-08-2010, 04:36 PM
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Originally Posted by InspGadgt View Post
At the highest speed parts of the corner, entry and exit, the suspension is compressed the least so it retains much if not all of it's static caster giving it more high speed steering. When you hit the slow part of the corner, apex, the suspension compresses decreasing the caster on that side of the car which increases the steering at low speeds. Shimming the rear ball increases the change in caster giving you more mid corner steering. This allows you to run more caster to start with than you would have otherwise...thus increases both high and low speed steering.
Originally Posted by Greg Sharpe View Post
I think you will discover that dynamically increasing caster throughout compression in a pancar will not provide the results you are looking for.



Shim the rear ballstud (on the F104) for more steering in both high and low speed corners. How much dynamically-decreasing-caster you choose to use is what dictates the behavior your pancar displays between high and low speed corners. However, since we're only dealing with a little tiny bit of shimming with these F104s, it's not worth nit picking, just shim the rear ballstud and move on. In comparison, most AE-style pancar front suspension have 5' and 10' choice of angle (which would be about an inch of shims under the rear ballstud on an F104!) If you have a local oval track nearby, talk with those racers about why they run dynamic caster on one side of the car but not the other.
Never thought of that, now i get the full picture! Thanks
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Old 12-08-2010, 05:23 PM
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Greg is right on point there...pan cars have 0, 5, and 10 degree arm mounts to change the reactiveness of the caster while shimming the rear pivot on the F104 will only produces 1 or 2 degrees of upper arm angle. So the affect will not be nearly as pronounced as it typically is on a pan car.
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Old 12-08-2010, 05:31 PM
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It makes a difference, but then again I run on a rug where any change is apparent.
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Old 12-08-2010, 09:55 PM
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hi all,

I got a f104 from a friend, and put my brushless setup in it. runs 5700kv, and 2s lipo. its was a quick setup for the touring car i had it in, but its living happily in the f1 now.

took the car out for its first run, but cant get the power down. i know the setup is too powerful, but any tips on what i can do to get all the power down and not wheelspin. couldnt even get it to 3/4 throttle without it spinning.

Running the tamiya rubber tyres, planning to go foams. got the frp t-bar and standard f104 pro shock.

On a side note...dont mount a camera phone on the rear wing. although the footage may be ace, the rollovers arent so entertaining.

and as ive discovered:
-F104 pro can take a beating
-Sony Ericsson C902 is bloody strong and survived about a dozen rollovers.
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Old 12-09-2010, 12:01 AM
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hey guys
got a couple of noob questions

does anyone have any info/review god or bad about these?
http://cgi.ebay.com/ws/eBayISAPI.dll...ht_2826wt_1139

i read on here that inverting steering servo helps reduce bumpsteer,is this true? if so can anyone recommend a steering servo that has the wires coming out of the back rather than the top?

the yeah racing t bars,are these any good? does the different thickness's have different flex?

noob says thanks in advance
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Old 12-09-2010, 12:17 AM
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Originally Posted by total3d View Post
hi all,
On a side note...dont mount a camera phone on the rear wing. although the footage may be ace, the rollovers arent so entertaining.

and as ive discovered:
-F104 pro can take a beating
-Sony Ericsson C902 is bloody strong and survived about a dozen rollovers.
And where is the video?! You "have to" give evidence ;-)
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Old 12-09-2010, 12:42 AM
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Originally Posted by kneedeeppow View Post
hey guys
got a couple of noob questions

does anyone have any info/review god or bad about these?
http://cgi.ebay.com/ws/eBayISAPI.dll...ht_2826wt_1139
I have one of these on my F109...it is a pretty nice setup in that the front lower suspension arms stay bolted on when you change camber. The only down sides are I need to take the front wing off to change camber and I had to dremel part of the lower nose cone part of the wing to get the piece to fit.
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Old 12-09-2010, 05:21 AM
  #3989  
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Originally Posted by kneedeeppow View Post
hey guys
got a couple of noob questions

does anyone have any info/review god or bad about these?
http://cgi.ebay.com/ws/eBayISAPI.dll...ht_2826wt_1139

i read on here that inverting steering servo helps reduce bumpsteer,is this true? if so can anyone recommend a steering servo that has the wires coming out of the back rather than the top?

the yeah racing t bars,are these any good? does the different thickness's have different flex?

noob says thanks in advance

I have one on my 104 right now and had some issue at first but it's ok now.

First issue was the aluminum screws bound in the aluminum threads and snapped both screws off. after drilling the screws, AND the threads out, buying new screws and lock nuts I'm more than happy with it
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Old 12-09-2010, 08:27 AM
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Originally Posted by abailey21 View Post
I have one on my 104 right now and had some issue at first but it's ok now.

First issue was the aluminum screws bound in the aluminum threads and snapped both screws off. after drilling the screws, AND the threads out, buying new screws and lock nuts I'm more than happy with it
The plates bend after hard impact, you can bend them back but the fatigue causes them to bend easily. I'd go with the Yeah Racing front camber blocks.
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