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Losi mini B 1/16th 2wd buggy

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Losi mini B 1/16th 2wd buggy

Old 01-25-2022, 05:39 PM
  #301  
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Thanks for the additional option. Nice to know I have more than one choice!
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Old 01-26-2022, 02:17 PM
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Originally Posted by lowspark View Post
TDK EcoPower 827 servo is digital and use's the 21t spline alum servo horn. It works great... and only $15.
Correction>>> the losi alum servo horn is 20t and so is the EcoPower servo
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Old 01-27-2022, 05:18 PM
  #303  
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I decided to order a package from eBay. It's a Savox metal gear micro servo, with 3D printed mounts, and a 3D printed servo arm. It seemed like a great deal at $36. I'llf follow up when it arrives and I get to install it.
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Old 01-29-2022, 07:40 PM
  #304  
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I bought the same kit. The savox servo lasted one race. Pretty bummed. No hard hits either.
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Old 01-30-2022, 03:04 PM
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That's disappointing, and also surprising. I have read really good things about Savox servos.
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Old 02-04-2022, 09:18 PM
  #306  
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I searched online and couldn't find a setup sheet for the Mini B, even just one to edit. So, for those of us that race and would like it, I created one that is editable. See PDF file below.
Attached Files
File Type: pdf
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Old 02-06-2022, 06:18 PM
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Originally Posted by 3D-Seth View Post
I searched online and couldn't find a setup sheet for the Mini B, even just one to edit. So, for those of us that race and would like it, I created one that is editable. See PDF file below.
Thanks, this is great!
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Old 02-08-2022, 11:22 PM
  #308  
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I decided to upload all the parts I designed for this chassis on Thingiverse. Hope it helps someone.

https://www.thingiverse.com/thing:5239098/files
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Old 02-10-2022, 01:35 PM
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I've been away from the hobby for a few months but have big hopes of jumping back in come spring. I see Losi has released the Mini-B Pro. Back in post #175 I suggested Losi release this car in kit form minus electronics but with every upgrade they make and then add a ball diff. The Pro edition isn't everything I hoped for but it's close enough and I plan to get one. Kudos to Losi giving us more options in this class of cars
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Old 02-23-2022, 04:00 PM
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Originally Posted by Raguvian View Post
I decided to upload all the parts I designed for this chassis on Thingiverse. Hope it helps someone.

https://www.thingiverse.com/thing:5239098/files
I like the truggy look, nice work.
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Old 02-26-2022, 10:09 AM
  #311  
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Default Gear Mesh

I finally had time to sit down and build up my mini-b roller. I ended up putting in the EcoPower servo and using the Losi aluminum servo horn that came with the kit. The case of the EcoPower servo is identical (size and shape) to the Losi servo in the RTR version so it was a perfect fit in the roller. Once I get to the track (small, tight, carpet off-road for 1/10 scale) I'll report back on durability.

I have a problem with the gear mesh between the pinion and the spur gear. I disassembled the gear box and cleaned out the factory black grease. I lubricated the bearings with Krytech dry lube. Then I put a very small amount of 300k silicon diff oil (Kyosho) in the spider gears. I reassembled the gearbox with no issues. However, when I installed the Dynamite brushless motor/ESC I hit a snag. The instructions say to use the top center and bottom center holes for bolting the motor to the motor plate, but I couldn't get those to line up. I had to use the top right and bottom left holes. The pinion/spur fit is tighter than I'd like, but there seems to be just the tiniest bit of play between the pinion and spur, so it doesn't seem bound. However, there is zero coast. It's like I have 100% drag break set. I plan to go through the ESC settings to confirm it isn't a setting (but the factory settings should be fine). I realize 300k is a VERY thick diff oil (I used it in my Slash), but given it is an open diff I wanted to use something that would provide resistance and not immediately leak out.

My question, has anyone else had trouble using the recommended mounting holes for the motor? Any tips? Did I just make a simple mistake like not rotating the motor to the correct position before trying to bolt it in? Second, has anyone else experienced binding? Is it likely that pinion/spur gear fit? Or maybe the 300k silicon oil in the diff is just too much for a vehicle of this scale. Any input is welcome! Thanks in advance.
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Old 02-28-2022, 08:49 AM
  #312  
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#1- diffs on the Mini-B are not designed to use silicone oil... they are not sealed and the oil will leak out... Use a grease that you like instead. I use a red (sticky) grease on mine. But any grease will work and yes, some of this will eventually leak out.

#2- mounting holes. I drilled out my mounting holes with a 3mm bit which then allowed for a but of play between the spur and pinion. Next upgrade, you can get a new motor plate that is slotted to allow for multiple fits.
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Old 04-07-2022, 10:20 AM
  #313  
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AMAIN has the pro roller for sale - $60 off!......could not pass it up so ordered one myself.....
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Old 04-08-2022, 01:44 AM
  #314  
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Originally Posted by sacmiata View Post
AMAIN has the pro roller for sale - $60 off!......could not pass it up so ordered one myself.....
Thanks for the heads up! I just ordered one too. Amain, Horizon, and Tower are all running the promotion.
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Old 04-10-2022, 07:45 PM
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I finally got to test out my mini-B at the track last Sunday. Small, technical, carpet track. Built for 1/10th scale with some long jumps. It was a challenge with the mini-B (compared to my 1/10th TLR 22 3.0), but it could handle it. I was using the mini pin rears and wedge fronts. I did once have the servo sort of freeze up after a crash, but a little tap and it cleared whatever jammed it. I didn't do any tuning with springs and oil yet. I think that would help with jumping and making it easier to steer through tight switchbacks.
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