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Old 09-02-2009, 04:13 AM   #736
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I was looking @ the results of the F1 series in Japan and the winner of the race and the constructors cup was the Tech Racing F125. It has a similar battery layout to the 104 but mounts the electronics on the wider lower chassis plate which leads me to think that the layout has potential. The 104 has some abilities that we need to exploit (turn exit on power stability) and some weaknesses that need to be overcome (off power steering, twitchiness). What the 103 didn't have was this forum to fast track it's competitiveness. Anyway, the 104 just looks so much better with it's sculpted sidepods especially with the upper winglets removed
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Old 09-02-2009, 06:33 AM   #737
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There is definitely potential in the F104. If we were able to run the F103 tyre combo, it would be a massive help.

I don't have a F103 but I reckon it is probably some 15-20mm wider and the rear tyres alone would be 8-10mm wider... LINK
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Old 09-02-2009, 07:22 AM   #738
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Originally Posted by veecee View Post
There is definitely potential in the F104. If we were able to run the F103 tyre combo, it would be a massive help.

I don't have a F103 but I reckon it is probably some 15-20mm wider and the rear tyres alone would be 8-10mm wider... LINK


i completely agree... some one needs to manufacture rubber tyres for the 104
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Old 09-02-2009, 09:07 AM   #739
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Originally Posted by veecee View Post
There is definitely potential in the F104. If we were able to run the F103 tyre combo, it would be a massive help.

I don't have a F103 but I reckon it is probably some 15-20mm wider and the rear tyres alone would be 8-10mm wider... LINK
I've tried 103 rear tires.. they improve stability alot. The only problem is you have run quite a large diameter on the rear to suit the front.
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Old 09-02-2009, 10:00 PM   #740
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Ive been using F103 tyres and rims on my 104, I started with Zen 25s on the back which made a huge difference to the handling, hardly spins. I was running kit foams on the front which gave a few problems with turn in. so i turned the dual rates back up and that made a huge difference, easily keeps up if not leaves the F103s behind through the infield. As a trial i put Zen 38s on the front, bit too much grip in the front now so has been spinning alot. Im still new to this F1 buzz so as far as t-bar and shock settings are concerned im not sure where to start, I might try 40s on the front to see what that does.

I had to put a spacer in between the arms to get the pin to clear the F103s smaller front rim and run 850 bearings so they will fit the F104s uprights. Check out the angle of the top arm when you put the spacer in
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Old 09-02-2009, 10:34 PM   #741
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Ive been using F103 tyres and rims on my 104,

I had to put a spacer in between the arms to get the pin to clear the F103s smaller front rim and run 850 bearings so they will fit the F104s uprights. Check out the angle of the top arm when you put the spacer in
Got pictures to show? Not understanding....
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Old 09-02-2009, 11:29 PM   #742
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I've tried 103 rear tires.. they improve stability alot. The only problem is you have run quite a large diameter on the rear to suit the front.
That's promising. Does using F103 rears make the rear end wider than the front end?

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Ive been using F103 tyres and rims on my 104..... I had to put a spacer in between the arms to get the pin to clear the F103s smaller front rim and run 850 bearings so they will fit the F104s uprights. Check out the angle of the top arm when you put the spacer in
Yeh pics would be great!
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Old 09-03-2009, 12:22 AM   #743
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That's promising. Does using F103 rears make the rear end wider than the front end?
Yes it does. The rear track width is definately wider than the front since i am still running the 104's front wheels.

If junn is able to provide pictures, i might want to try the 103 fronts also on the 104 since i still have tires. Dun want to waste them
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Old 09-03-2009, 01:05 AM   #744
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Hey guys

i have taken some photos and will upload them soon, stay tuned
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Old 09-03-2009, 01:18 AM   #745
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Tamiya F104 Pro!-03092009379.jpg

Tamiya F104 Pro!-03092009381.jpg

Tamiya F104 Pro!-03092009382.jpg

Tamiya F104 Pro!-03092009383.jpg

Here they are.........
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Old 09-03-2009, 01:21 AM   #746
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Thanks for the pics junn! Do you mind doing one more - from above showing the whole car. Just want to see the widths of front vs rear. Thanks!
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Old 09-03-2009, 01:23 AM   #747
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IF you add the spacer you'll probably have to put a softer spring on as it preloads the existing spring so youll end up with a hard setup on the front

Dont overtighten the wheel nuts as the 850s wont like it. Its way more stable with the F103 rear wheels

My next tuning option is to try the TRG rubbers as thats what everyone uses in our club, apparently theyre the tyres to use, I can keep up with an F103 running TRGs with Zen 25s on my F104

Dont give up on this car boys, keep up the good work.Sooner or later we'll run rings around the F103 and F109
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Old 09-03-2009, 01:26 AM   #748
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From the topTamiya F104 Pro!-03092009384.jpg
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Old 09-03-2009, 01:37 AM   #749
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Looks like about a 2mm spacer that you've added?

Good to know that we can now fit fron F103 wheels

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Old 09-03-2009, 02:03 AM   #750
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Nah its a 1mm spacer.

Well i was stoked but thought that surely someone would have figured this out by now, thats why i hadnt posted it, ive been running my car like this for about 4 weeks now.

I almost bought F103 uprights

I definately need to learn how to adjust the rear end though, theres so much adjustment between the FRP plate and the shock, and the slip in the diff

You guys have any luck with diffusers? what about those 3racing FRP t-bars?
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