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Old 11-07-2009, 10:08 AM   #286
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Got to run the F109 for the first time today, outdoors on a very cold dirty track.
had problems with the car wandering in a straight line, tried some steering setting on the TX but it made no difference, so I tried a thicker oil in the side damper which made things even worse, so I removed the side damper just to try and it went in a straight line no problem.
Next came a problem with the corners as it appeared that the rear was lifting, so I placed 2x 5g weights on the lower rear pod below the axle line and that kept the rear firmer, so much so that I now have understeer in the corners.
Having now sorted the car with the kit foams (no treatment or additive) I set about running it with some old (about 12yrs) Tamiya Type A Rubbers, and once i got a few laps together to get heat in to them the car was surprisingly stable, if anything with a little too much understeer.
Motor is an unused Kyosho G20 Sealed Can motor as supplied with Kyosho RTR kits running on 31/93 gearing for a 155ft main straight.
Boy was it fun to drive
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Old 11-07-2009, 11:21 AM   #287
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get better servo saver - i use kimborough 1/12 scale one and it helped a lot keeping the car going straight
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Old 11-07-2009, 11:38 AM   #288
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get better servo saver - i use kimborough 1/12 scale one and it helped a lot keeping the car going straight
already fitted, with futaba 9550
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Old 11-07-2009, 12:49 PM   #289
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servo saver not servo
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Old 11-07-2009, 01:16 PM   #290
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servo saver not servo
DOH!!! I am thick
Kimborough make servo's
Futaba make servo savers
Should I use paper instead?

I think after over 17 years of racing, and 6 Kyosho World Cup British Championship wins behind me I should know what I am on about
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Old 11-07-2009, 05:33 PM   #291
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Originally Posted by wallot View Post
get better servo saver - i use kimborough 1/12 scale one and it helped a lot keeping the car going straight
I am running a futaba 9550 with a kimborough mid size servo saver and that seem to work a lot better than the stock one. I am running on carpet silver can.

Last edited by rack; 11-10-2009 at 09:46 AM. Reason: update
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Old 11-07-2009, 10:19 PM   #292
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Why don't use Tamiya high torque with F104 HT servo saver?
I guess they are the best kind for F1.
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Old 11-08-2009, 03:57 AM   #293
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Had a first race with my F1-09 on foam tires. No traction compound allowed. Was not bad but others were faster. Did try ZEN 30shore rear tires with F1-09 fronts and wow -2.5s per lap (15.5 second laps)

Great race with almost 60 minutes of race time. Finished 2nd.
great result!!!... you were using the stock setup or you made some changes apart from the tires?
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Old 11-08-2009, 04:06 AM   #294
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So u were using rubbers or foam? I m trying foam. Putting 55 oil in my side damper.

Hv not tested the car yet

Quote:
Originally Posted by NiMo View Post
Got to run the F109 for the first time today, outdoors on a very cold dirty track.
had problems with the car wandering in a straight line, tried some steering setting on the TX but it made no difference, so I tried a thicker oil in the side damper which made things even worse, so I removed the side damper just to try and it went in a straight line no problem.
Next came a problem with the corners as it appeared that the rear was lifting, so I placed 2x 5g weights on the lower rear pod below the axle line and that kept the rear firmer, so much so that I now have understeer in the corners.
Having now sorted the car with the kit foams (no treatment or additive) I set about running it with some old (about 12yrs) Tamiya Type A Rubbers, and once i got a few laps together to get heat in to them the car was surprisingly stable, if anything with a little too much understeer.
Motor is an unused Kyosho G20 Sealed Can motor as supplied with Kyosho RTR kits running on 31/93 gearing for a 155ft main straight.
Boy was it fun to drive
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Old 11-10-2009, 06:17 AM   #295
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tried the f109 with 55 wt side damper, rear still sliding. Tried 20gram weight on the rear was better.

will try 30 grams, on thur. Does anyone put weight on f109?
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Old 11-10-2009, 06:41 AM   #296
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tried the f109 with 55 wt side damper, rear still sliding. Tried 20gram weight on the rear was better.

will try 30 grams, on thur. Does anyone put weight on f109?
i only got in a short test before trying to race it (on a greasy track)
I got as far as 10g below the axle, and was thinking of more.
I am wondering if the rear wing has something to do with the rear end problems on F1 cars, cos most F1 cars have a similar problem, yet 200mm pan cars do not suffer from the problem.

Still looking at ways to put Pro10 wheels on the rear, as then I can run the Corally Silverstars which seemed to work on the pan cars that ran.
(pan cars that did not run them also had rear grip issues)
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Old 11-10-2009, 07:00 AM   #297
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Then how about in rolling damper, if optional springs didn't come yet, will not able to using another oil?
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Old 11-10-2009, 07:18 AM   #298
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not had time to test with rolling damper.
All I know is that with kit oil the rear walked, with heavier oil it was a nightmare, so i removed it and it was almost ok.
I also trid 2mm spacers on the side springs, but this made it swap ends to easily coming in to corners.
Someone suggested braking for the corners, but I never brake for corners with the GT car so want to get this F1 car to be the same.
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Old 11-10-2009, 07:33 AM   #299
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I dunno how u guys drive it, I still spun out
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Old 11-10-2009, 08:02 AM   #300
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Quote:
Originally Posted by NiMo View Post
not had time to test with rolling damper.
All I know is that with kit oil the rear walked, with heavier oil it was a nightmare, so i removed it and it was almost ok.
I also trid 2mm spacers on the side springs, but this made it swap ends to easily coming in to corners.
Someone suggested braking for the corners, but I never brake for corners with the GT car so want to get this F1 car to be the same.
In fact i am just worried what else of shock oil could replace the kit 1 if it finished, in fact it is so few and little.
How about 10W shock oil?
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