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Old 07-14-2011, 04:04 PM   #1
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Default Robinson Racing set screw

What size allen tool is it? I tried 1.5mm and I felt like I stripped it as it popped and didn't tighten down on my new Castle 26mm properly. I repositioned it, making sure to tighten down on the flat section of the shaft and it might be ok, but I'd rather be sure to tighten it properly. I gotta feeling it's not a metric size as 2mm is too big. Tower Hobbies couldn't tell me and they didn't answer at RR.
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Old 07-14-2011, 05:02 PM   #2
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it is 1.5mm. I just went to the lhs and bought a robinson pinion. I picked up a driver for it and the shop worker let me open them to make sure it fit. get a 1.5mm allen driver with a ball end. makes it easier not to strip anything.
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Old 07-14-2011, 07:20 PM   #3
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What size allen tool is it? I tried 1.5mm and I felt like I stripped it as it popped and didn't tighten down on my new Castle 26mm properly. I repositioned it, making sure to tighten down on the flat section of the shaft and it might be ok, but I'd rather be sure to tighten it properly. I gotta feeling it's not a metric size as 2mm is too big. Tower Hobbies couldn't tell me and they didn't answer at RR.
if you have a 1/10 size pinion, it is 1/16th"
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Old 07-15-2011, 05:20 AM   #4
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It's a .6 pinion to fit my 1/18th scale 26mm Castle motor. They call it a 5-40 set screw.
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Old 07-15-2011, 08:46 AM   #5
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It's a .6 pinion to fit my 1/18th scale 26mm Castle motor. They call it a 5-40 set screw.
Yeah, you will need a 1/16" wrench for that setscrew
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Old 07-15-2011, 10:21 AM   #6
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Thanks, someone from RR emailed me too.
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