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Tamiya F104 Pro!

Old 07-02-2011, 08:16 PM
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Had a run last night and played with the tamiya tires.

conditions were low grip, cold night, and the only change to the car between rounds was the rears. Ran tamiya hards up front. I run Tekin 21.5. with boost etc. 8 min races

first up tried tamiya soft rears with the shimizu inserts that come with the shimizu rears. FXII for 15 minutes. Best Lap 25.351, Avg 26.205, Car felt very stable, and easy to get onto power. 19 Laps total 8m17. I had used these tires for 3 races earlier, so had some wear.

next race tried tamiya soft with foam insert. Treated with FXII 15 minutes. Best Lap 25.830 Avg 25.830. Car felt fine, I did feel that I couldn't hold on the throtle as early. 18 laps in total 8m.05.

Final race of night went back to first race setup and car felt even better, but I forgot to but in transponder, but I was able to finish within 1/2 sec or corally for another 19 laps.

I would recommend for low traction cold to give the Tamiya Soft rear's with the shimizu inserts a go if looking for rear traction.
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Old 07-02-2011, 08:40 PM
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Does anyone know if the F104x1 is out in Japan yet?
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Old 07-02-2011, 08:54 PM
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Originally Posted by evostyle View Post
Does anyone know if the F104x1 is out in Japan yet?
i thought i heard/read mid-to late-july
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Old 07-03-2011, 03:25 AM
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could someone out there help me out. i experience really bad understeer. i have tamiya option front and rear wheels,silver front spring with a silvercan. i drive on low grip ashpelt surface with no aditives as i cant really get them. is there any setup tips i could try?
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Old 07-03-2011, 09:33 AM
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Originally Posted by freakyfreakyflo View Post
could someone out there help me out. i experience really bad understeer. i have tamiya option front and rear wheels,silver front spring with a silvercan. i drive on low grip ashpelt surface with no aditives as i cant really get them. is there any setup tips i could try?
Option front tires are hard compound, the kit fronts are medium and will increase grip.
The Option rears are soft and will give the most rear traction as far as Tamiya tires go. The kit rears are also medium compound.
For more steering you can go to the kit medium fronts with the soft option rears or keep the hard fronts and go to the medium kit rears but will probably lose too much rear traction.
For additive that should be easy to get, try cleaning the tires each run with Simple Green. Works especially well on the Tamiya F104 rubber.
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Old 07-03-2011, 06:21 PM
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finally got around to testing the rc4less foam 104 tires! the Tamiya fronts wear waaay too fast.
Mantisworx independent rear suspension chassis
RC4 soft rears,super hard fronts
17.5/3s
track was rained on this morning so it was very loose but i still had plenty of grip!
http://www.youtube.com/watch?v=dP-k0IEE-gw

tires are great, after 3 full packs very little wear, normally i wear out a set of fronts every other pack at least to the point where i can barely use them.
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Old 07-03-2011, 06:39 PM
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so anyone tell me what are good rubber tires for carpet with the 104?
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Old 07-04-2011, 12:24 AM
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Originally Posted by MantisWorx View Post
17.5/3s
track was rained on this morning so it was very loose but i still had plenty of grip!
http://www.youtube.com/watch?v=dP-k0IEE-gw
3S??? Must have only been using 15% throttle

My F104 with 17.5 2S boosted is a bit of a rocket...
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Old 07-04-2011, 12:30 AM
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Default kimbrough spur gear

can anyone please tell me what size diff balls are need when running the tamiya spur gear adapter w/a kimbrough spur gear

hope to hear from someone!!!

thanks!
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Old 07-04-2011, 01:08 AM
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Originally Posted by F N CUDA View Post
Option front tires are hard compound, the kit fronts are medium and will increase grip.
The Option rears are soft and will give the most rear traction as far as Tamiya tires go. The kit rears are also medium compound.
For more steering you can go to the kit medium fronts with the soft option rears or keep the hard fronts and go to the medium kit rears but will probably lose too much rear traction.
For additive that should be easy to get, try cleaning the tires each run with Simple Green. Works especially well on the Tamiya F104 rubber.
many thanks. i was going to try the shimizu r3s on the front with the option rear.did not realise the kit fronts were medium.i will try them to
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Old 07-04-2011, 02:27 AM
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Originally Posted by ghoppa View Post
can anyone please tell me what size diff balls are need when running the tamiya spur gear adapter w/a kimbrough spur gear

hope to hear from someone!!!

thanks!
1/8th inch
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Old 07-04-2011, 07:30 AM
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Originally Posted by PDR View Post
3S??? Must have only been using 15% throttle

My F104 with 17.5 2S boosted is a bit of a rocket...
the track is huge, its full throttle and is quicker than a 17.5boosted setup. i normally run 17.5 boosted and needed more power for this track. that straight is 230' long! what your looking at is about 61mph, your not going to be able to do that with a 2s 17.5 boosted setup and if you did you would have no bottom end for the infield. do your own math:
http://scriptasylum.com/rc_speed/top_speed.html
KV reference: http://teamtekin.com/blmotors.html

2500kv
3.25 gear ratio
2.4"dia tires
11.1v (actually 12.2 on a full charge)

even if you were able to get 25k rpms, with timing (which you are not) that still only puts you at 55 mph max with a use able gear ratio.

on this track 1/8 scale gas cars exceed 75mph!
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Old 07-04-2011, 08:58 AM
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Originally Posted by MantisWorx View Post
finally got around to testing the rc4less foam 104 tires! the Tamiya fronts wear waaay too fast.
Mantisworx independent rear suspension chassis
RC4 soft rears,super hard fronts
17.5/3s
track was rained on this morning so it was very loose but i still had plenty of grip!
http://www.youtube.com/watch?v=dP-k0IEE-gw

tires are great, after 3 full packs very little wear, normally i wear out a set of fronts every other pack at least to the point where i can barely use them.
that thing looks evil man. Wheel spin out the corners, so sideways i thought it may have rear steering. Is that your chasis or f104?
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Old 07-04-2011, 09:13 AM
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Originally Posted by evostyle View Post
Does anyone know if the F104x1 is out in Japan yet?
Big chain stores should be getting it next week. Ill try to post pics as soon as I get it in my hands.
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Old 07-04-2011, 09:52 AM
  #5565  
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Originally Posted by Vicko View Post
so anyone tell me what are good rubber tires for carpet with the 104?
You should try the Shimitzu tires. The R3 soft rear's and F3 medium fronts work well on carpet........ good luck.
http://www.tqrcracing.com/shop/produ...d=f104&pg_no=1

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