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Old 03-04-2014, 08:10 PM   #2581
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I have noticed that there are a few around that prefer to use the car ahead as an extra brake/rolling wall. The breakages will settle down as you get used to the car and as you get used to avoiding the drivers that have their brakes set to 0%. We did miss you on Friday night (literally and figuratively) I have a new body on my car now as well. It has a few small scuff marks on it as I am getting used to running a car with aero control. Seems to be missing something though. Might be just a bright pink/orange technocolor scuff on the front/roof. LOL
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Old 03-11-2014, 07:03 PM   #2582
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I assembled the R1 the day it arrived, but had to wait a couple of weeks for the last of the electronics to arrive due to Hobbyking being slow. However, the last of the parts arrived today, so I wired it up. This is my first car, so I likely didn't route the wiring as good as most, but it is good enough for now (I hope).

I did make one really stupid mistake though....I dropped the soldering iron on the spur gear and melted it. Doh! I have a spare spur, but it is a 104t. The one that I melted was a 96t. With the 46t pinion, my FDR will be 4.3 instead of 4....not too big of a deal since I'm going to be super slow anyways.

Attached is a pic of my attempt at wiring.

I'm thinking of shortening the servo leads and covering them in some mesh sometime in the future. I'd like to use 14awg wire for the esc-motor wires as well, and maybe make them a bit longer so that I can better maneuver the motor to swap pinions.
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Old 03-11-2014, 07:13 PM   #2583
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Looks great DBM.
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Old 03-11-2014, 08:52 PM   #2584
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DBM: I think your servo horn is in the wrong alignment/position. Look in the manual, you want it to be 90* to the angle of the turnbuckle that goes to the bellcranks.
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Old 03-11-2014, 11:31 PM   #2585
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Thanks, Steve. How is the racing scene in Ottawa? I have family in Ottawa, so I'm down that way once in a while.

metalnut, thanks for the tip. I fixed it.


I swapped in the non-melted 104t spur and finally put some batteries in the cheap Turnigy 3XS Tx and powered up the car. Throttle response is very smooth...I was surprised at how slowly it could drive off. This is my first time using a sensored brushless motor. I have ~60 brushless motors for robots and RC airplanes, but they are all sensorless outrunners which inherently have a slight bit of cogging off of the start.

I did run into a problem with the cheap radio system though (surprise surprise). There was a bunch of glitching a cutting out, which I noticed coincided with the green LED in the Rx flashing red once in a while. It eventually turned solid red and stayed red, and at that point was completely unresponsive to inputs from the Tx. I connected a 2S lipo directly to the Rx thinking that it might have been getting insufficient power from the esc, but that solved nothing. I ended up wiggling the antenna wire, and the Rx lit up green again. Pulling on the antenna wire in a certain direction seemed to fix it, which makes me think that there is a cold solder joint where the antenna wire is soldered to the PCB. I'll re-flow the connection tomorrow and see if that fixes the issue. There might also be a break inside of the antenna wire.

This cheap Turnigy radio system was meant to be very temporary, only having to last until the one that I want becomes available in May).
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Old 03-12-2014, 03:54 AM   #2586
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good to see another SpecR powered by a Trackstar. How many turns are you running?
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Old 03-12-2014, 04:54 AM   #2587
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Quote:
Originally Posted by DBM View Post
Thanks, Steve. How is the racing scene in Ottawa? I have family in Ottawa, so I'm down that way once in a while.
Ottawa has a bunch of very fast guys in the club, and several went to Japan for the TCS series the last few years. We have a great indoor facility at the Rockliffe Airport hosted by Sutton Aviation in their aircraft hangar.

We have a club forum at www.rcottawa.com if you're interested. I use the same account name there as I do here.
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Old 03-12-2014, 07:37 AM   #2588
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Quote:
Originally Posted by DBM View Post
I assembled the R1 the day it arrived, but had to wait a couple of weeks for the last of the electronics to arrive due to Hobbyking being slow. However, the last of the parts arrived today, so I wired it up. This is my first car, so I likely didn't route the wiring as good as most, but it is good enough for now (I hope).

I did make one really stupid mistake though....I dropped the soldering iron on the spur gear and melted it. Doh! I have a spare spur, but it is a 104t. The one that I melted was a 96t. With the 46t pinion, my FDR will be 4.3 instead of 4....not too big of a deal since I'm going to be super slow anyways.

Attached is a pic of my attempt at wiring.

I'm thinking of shortening the servo leads and covering them in some mesh sometime in the future. I'd like to use 14awg wire for the esc-motor wires as well, and maybe make them a bit longer so that I can better maneuver the motor to swap pinions.
car looks good - love all the matching red

is that the trackstar 951 (or something like that) servo?? If so, how do you like it?
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Old 03-12-2014, 07:40 AM   #2589
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Mrjudd, the motor is a 17.5t for our stock tc class. I also bought a 21.5 for our vta class.

Steve, that is very cool that you guys have such an awesome facility. The Saskatoon guys run in a tiny downtown basement....7 second laps.

I also have siblings who live in Victoria. Sounds like there is also a decent rc scene out there. Neat to know that I can pack my car and bring it with me whenever I travel to visit family. A lot easier than trailering my real race car across the country. :P
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Old 03-12-2014, 07:46 AM   #2590
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Quote:
Originally Posted by k_bojar View Post
car looks good - love all the matching red

is that the trackstar 951 (or something like that) servo?? If so, how do you like it?
Yup, it is a trakstar 951. (Edit: it is actually a 915....sorry. )Since this is my first car, and I have nothing else to compare to, I can't really offer much of an opinion about the servo. It seems to be a tad slow, though. I'm going to buy a savox servo in the future and can offer a better opinion after using both.

I'm very new to the hobby (I've only done ~20 laps in an old club car), so maybe the slow servo will be ok for me for now.

Last edited by DBM; 03-12-2014 at 12:18 PM.
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Old 03-12-2014, 04:06 PM   #2591
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Quote:
Originally Posted by DBM View Post
I assembled the R1 the day it arrived, but had to wait a couple of weeks for the last of the electronics to arrive due to Hobbyking being slow. However, the last of the parts arrived today, so I wired it up. This is my first car, so I likely didn't route the wiring as good as most, but it is good enough for now (I hope).

I did make one really stupid mistake though....I dropped the soldering iron on the spur gear and melted it. Doh! I have a spare spur, but it is a 104t. The one that I melted was a 96t. With the 46t pinion, my FDR will be 4.3 instead of 4....not too big of a deal since I'm going to be super slow anyways.

Attached is a pic of my attempt at wiring.

I'm thinking of shortening the servo leads and covering them in some mesh sometime in the future. I'd like to use 14awg wire for the esc-motor wires as well, and maybe make them a bit longer so that I can better maneuver the motor to swap pinions.
Nice one! I love the TrackStar stuff.. It's amazing what it can do for the money!
That's the TrackStar TS-915 Digital 1/10 Touring Car/Buggy Steering Servo 45g / 10.1kg / 0.08sec right? I also wonder how that servo is. I've got a : ACE RC, DS1015 which is Transmit time (sec /60) @4.8V (@6V): 0.138 (0.108) Seems yours is not that slow tho.
Let us know how the servo works out for you please
Anyway good looking Spec-R R1!
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Old 03-12-2014, 05:18 PM   #2592
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The TrackStar TS-915 does look good. I'll keep it in mind if I need something in the future, being slimline!

I originally bought a Blue Bird BMS-621DMG+HS from Hobbyking for my S1, but struggled to get everything to fit in between it and the motor. Would have been ok if not for my futaba receiver being quite big. Luckily I had a Savox 1251MG in my M05 Mini, which is now in the S1. The BMS-621DMG+HS has been excellent in my M05, every bit as good as the Savox IMO, highly recommend it (it's like $17!). I run the TrackStar 21.5 with the Hobbyking X-Car 60A ESC. Excellent budget gear! Keen to see the TrackStar motors get ROAR approval. Seems as though they have passed tech inspection but just waiting for them to meet the supply requirements.
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Old 03-12-2014, 05:37 PM   #2593
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I use this servo in my VTA car and will be getting more for my other cars as well. It's fast, precise, centers well, and seems pretty durable so far. and the price isn't bad either!!
http://www.rcmart.com/power-ds1206tg...Path=1099_1025
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Old 03-12-2014, 09:32 PM   #2594
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Had my R1 out for its maiden voyage tonight. The Turnigy power system worked great.....lots of power/speed! Brakes were adequate. I'm using the 120A turbo esc (version 1). My driving leaves a lot to be desired though. :P A veteran driver drove my car and recommended I get a different servo. The 915 isn't very smooth, and doesn't center perfectly. It seems slower than its specs dictate. I'm curious if it is the kimbrough servo saver that might be causing the centering issues though. I should have thrown a solid servo horn on it to see if things improved.
Even with my radio's steering limits set to 120% right, 80% left, the servo still had more throw to the left, and not enough steering lock in general. I'm not sure if it is the fault of the radio, or the servo. I'll install a different servo and compare.
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Old 03-13-2014, 04:13 AM   #2595
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Quote:
Originally Posted by DBM View Post
The 915 isn't very smooth, and doesn't center perfectly. It seems slower than its specs dictate. I'm curious if it is the kimbrough servo saver that might be causing the centering issues though. I should have thrown a solid servo horn on it to see if things improved.
Even with my radio's steering limits set to 120% right, 80% left, the servo still had more throw to the left, and not enough steering lock in general. I'm not sure if it is the fault of the radio, or the servo. I'll install a different servo and compare.
I have a Savox servo in mine and had the same problem with the Kimbrough. I tried the solid one and first wack snapped it. I went with Tamiya's servo saver and been great since.

Tamiya or Xray servo saver would probably be a noticeable improvement.
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