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Old 08-26-2014, 03:11 PM   #4336
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Ive been running 10/50/5 on medium grip and it's a great balance. I see your run @ LHR... you going to the Futaba Challenge?
Yes I'll be there
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Old 08-26-2014, 03:13 PM   #4337
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Anyone figured out the HB equivalent springs for the Kyosho xgear springs Tessman is using on his setup sheets? Not really interested in buying $21/pair Kyosho spings.
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Old 08-26-2014, 03:22 PM   #4338
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Anyone figured out the HB equivalent springs for the Kyosho xgear springs Tessman is using on his setup sheets? Not really interested in buying $21/pair Kyosho spings.
You can get the associated equivalents... Blue fronts and white rears only 5 bucks a set
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Old 08-26-2014, 05:03 PM   #4339
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Found what I was looking for. Forgot about the petitrc big bore spring chart. Kyosho xgear white rear springs are listed as a measured rate of 37.51 gf/mm, which is very slightly softer than HB gold rear springs at 37.80. Kyosho xgear front red springs listed at 63.05 and yellow fronts listed at 64.30. The closest HB springs are gold and red, at 61.80 and 64.80 respectively. I can see why Tessman used Kyosho springs on the front. That's a big gap in HB spring rate coverage. Why can't manufacturers make springs in nice 0.1 lb/in or 10.5 gf/mm increments?
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Old 08-26-2014, 06:08 PM   #4340
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Everybody ok on spur gears now?
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Old 08-26-2014, 07:12 PM   #4341
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Just ordered 2 from tower and have 2 more on order at local hobby shop
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Old 08-26-2014, 07:13 PM   #4342
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Found what I was looking for. Forgot about the petitrc big bore spring chart. Kyosho xgear white rear springs are listed as a measured rate of 37.51 gf/mm, which is very slightly softer than HB gold rear springs at 37.80. Kyosho xgear front red springs listed at 63.05 and yellow fronts listed at 64.30. The closest HB springs are gold and red, at 61.80 and 64.80 respectively. I can see why Tessman used Kyosho springs on the front. That's a big gap in HB spring rate coverage. Why can't manufacturers make springs in nice 0.1 lb/in or 10.5 gf/mm increments?
I got yellow and red for the front and red and gold for the rear. The first page has the post from Torrence that has the springs rates.
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Old 08-26-2014, 10:03 PM   #4343
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Everybody ok on spur gears now?
Yup.. Too bad they don't last very long. Spur no. 3 stripped today at OC/RC accelerating down the straight. This cars gotta go away now.
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Old 08-26-2014, 10:50 PM   #4344
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How are you guys eating spurs so easily? My motor loosned up while running sunday. Sounded kinda funny so i brought it back to the pit.... Saw quite few teeth chewed up, so i tightened the motor back down reset the meah and threw the car back out there! Lol whats goin on fellas!btw i have two extras just wasnt about to change it then/now. Lol didnt even clean the teeth up with a blade!
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Old 08-26-2014, 11:03 PM   #4345
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Yup.. Too bad they don't last very long. Spur no. 3 stripped today at OC/RC accelerating down the straight. This cars gotta go away now.
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How are you guys eating spurs so easily? My motor loosned up while running sunday. Sounded kinda funny so i brought it back to the pit.... Saw quite few teeth chewed up, so i tightened the motor back down reset the meah and threw the car back out there! Lol whats goin on fellas!btw i have two extras just wasnt about to change it then/now. Lol didnt even clean the teeth up with a blade!
I agree with racer x 1. I think most of the spur issues are not caused by the spur gears being bad or weak.

I ran an entire race weekend with a spur that was halfway chewed up. I chewed it up on the first pack with the car, most likely because I had forgot to tighten down the motor mount I reset mesh, used some loctite and re-tightened down the motor mount and the spur never got any worse.

Here is a pic of the spur that I ran 8 rounds of racing and 3 practice packs on. Hell, its still on the car and will stay on it until I kill it completely.




The track was a very high bite, sugar track. I am also not easy on the throttle at all.
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Old 08-26-2014, 11:38 PM   #4346
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Still on original spur here with 5.5 motor on high grip astro tracks in the uk.
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Old 08-27-2014, 01:11 AM   #4347
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Still the original spur and pinion
Been running this car from April on hardpacked dirt, and lately on astro with 300K in centerdiff.

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Old 08-27-2014, 02:00 AM   #4348
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My spur is still perfect also.

jpcopeland1, I mean no offense at all when I say this, but if you've killed 3 spur gears already, it's very likely that you're doing something wrong.

Do you race with any other D413 drivers that you could compare your car with to see if you can figure out what's different ?
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Old 08-27-2014, 03:57 AM   #4349
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Same here guys. Still on the same spur from May
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Old 08-27-2014, 04:27 AM   #4350
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Last Sunday a buddy of mine stripped his spur. he told me that it was the motor coming loose from its mount. He forgot to really tighten the 2 screws.

Maybe peeps that are stripping spurs, they should check that. it could have something to do with it.
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