Re: Axial 1/18 Yeti (and Yeti Score)
 

Sorry to hear about the issues with some units. I received mine and have had no issues to date. Maybe the air here in Canada's north is different and things aren't causing problems with electrics (kidding). [emoji1] finger on the trigger however for mamba system in case things go wrong. So far so good!!http://uploads.tapatalk-cdn.com/2016...49e9b1ef9c.jpg


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Re: Axial 1/18 Yeti (and Yeti Score)
 

Im sure nobody will be buying it, since you know, its not for sale anymore.... but yeah, if sensored was an option people would be buying it because its better.

Re: Axial 1/18 Yeti (and Yeti Score)
 

The real question is, why don't we have a sub forum yet?

Re: Axial 1/18 Yeti (and Yeti Score)
 

Got the 1711mg installed:

http://img.photobucket.com/albums/v2...pslney90ox.jpg

Fits REALLY well in there.
Good strong servo that doesn't cost alot:

Pololu - $12
Aloft Hobbies - $7.30

Double the torque of the stock servo (49oz-in @ 6v). Also the 23 spline servo saver that comes in the kit works, but I didn't want a servo saver for my build.

You don't have to spend a lot to get better stuff installed...
By the way, I tried this on the stock RX/ESC and it didn't like it. I have a feeling there is something weird about using other servos on the 2-in-1 unit that comes with these.

Re: Axial 1/18 Yeti (and Yeti Score)
 

Very nice! What pinion? Everything fit without issue? I might be doing this sooner than later...unexpectedly... :roll:

Re: Axial 1/18 Yeti (and Yeti Score)
 

Just using the stock pinion for now, everything fit fine

Re: Axial 1/18 Yeti (and Yeti Score)
 

Well, I think it's been established that the electronics side of things is looking a bit rough, but what's everyone's opinions on the chassis side of things???? I doubt I'll have mine before the new year so anything to torture me less is good (so tell me that chassis is good!) Anyone locked the rear diff yet? I'm also thinking I might go ahead and purchase a Mamba Micro system before it arrives, just to save down time

Re: Axial 1/18 Yeti (and Yeti Score)
 

Sweet! Just got everything ordered. :mrgreen:
I wonder which plastic driveline component will let go first... Haha

Re: Axial 1/18 Yeti (and Yeti Score)
 

I love the chassis. Easy to work on and seems to perform great. Suspension is set up pretty good out of the box for my terrain. It does traction roll pretty easily with the relatively sticky tires and the battery mounted so high but it's a lot of fun. I suspect it'll be my favorite RC once I get the electronics sorted out.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I was looking at some inexpensive electronics upgrades for this:

Servo - Power HD 1711mg - $12
ESC - Hobbywing Quicrun 1625 (Waterproof) - $20
Radio - FlySky FS-GT2E (with receiver) - $25
Deans Connector pair - $3 (to upgrade stock battery and HW ESC Connectors, allows easy upgrade in the future to LiPo.)

So, $60 to swap to better electronics (less if you already have a radio. Also, you might be able to find a set of used electronics for cheap as well.)

If you want a little more power, there are other 380 brushed motors out there, like the Traxxas Titan 380, Xtreme 380X heli motor, etc. Most of the 380 Brushed motors are fairly inexpensive as well.

You could also swap the motor for a brushless system:

ESC - Hobbywing Quicrun 16BL30 with 2435 motor - $55

This would be $95 total including the radio and servo above.

Of course there are other options, but I think that this would be a decent, inexpensive step up from the stock electronics.

Yes, it sucks that you would have to immediately pay for electronics, but it doesn't have to be expensive. If my son was old enough to play with RC cars, this brushed set up above would be what I would get for him.

It would just be nice to have the option to not pay for the stock electronics and just get the above stuff.


As far as the vehicle is concerned, it is pretty awesome. It traction rolls really easy, but the heaviest part of it (the battery) sits almost completely above the height of the tires. If we could mount that closer to center and lower down, that would help a lot with that. (JC Auto Design might look into an alternative battery mount)



Also... When do we get a sub-forum for these?

Re: Axial 1/18 Yeti (and Yeti Score)
 

X2 for me to this thread is really funny and interesting...:lmao:

Re: Axial 1/18 Yeti (and Yeti Score)
 

Ya hold on, let me buy a few more of these to keep the electronics and sell the roller.

Re: Axial 1/18 Yeti (and Yeti Score)
 

Honestly, I don't know who would sell theirs at a loss. It is still new enough to return to Axial if you are unhappy with it. No one wants the electronics from these, so it is in no one's interest to buy one to sell cheaper.

Re: Axial 1/18 Yeti (and Yeti Score)
 

For kicks I hooked up the stock servo to my new esc fed power from the Mamba micro x and low and behold it no longer has centering problems. Now, I didn't go as far as to put it back in and take it for a drive but literally before it wouldn't even center not hooked up to the bell crank.

Re: Axial 1/18 Yeti (and Yeti Score)
 

It's too bad the electronics are what you guys are encountering. This vehicle has 427 replies and 26,500 views in just a few short weeks. That to me says it was sorely wanted and just wish the electronics were at least worthy of a few battery packs cause that is usually when we upgrade anyhow. If they make a Bomber Kit I will definitely get one but not a RTR in either flavor.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I stated that Axial should pull the electronics and keep them to hash out as replacements for all the previously sold RTR unit's warranty claims. Then sell the rollers to those of us that only want/need a roller. Granted they'd take a loss but which is less loss: taking returns/warranty claims for entire units or replacing the electronics. Maybe they need to start a 'Scratch and Dent' sale section to recoup some losses.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I know that is what you were talking about, but there have been a few people on here offering to buy these from other forum members without electronics at a discounted price.

I doubt Axial will do what you were talking about though, because at that point, they could just re-package it as an ARTR, rather than selling it as an Open Box unit missing parts.

Axial 1/18 Yeti (and Yeti Score)
 

Others may not want to sell them off at a loss. But Christmas is near, money may be tight, and kids want toys that work. PMs have been sent by multiple members. Not everyone is a fanboy and will make it work. Several bought the gimmick and realized it's a RTR POS.

True, I doubt Axial would ever do anything like that. That's what one would do at a grass roots level, not corporate. They'd need new packaging to put them in and that takes time. We want them now. They can't really use the RTR box for it.

Re: Axial 1/18 Yeti (and Yeti Score)
 

X2, an RTR should run well right out of the box and not require any upgrades. The electronics will probably not be awesome, but they should fully operate as intended for a year or more. I prefer kits, but have bought several RTRs due to lack of time and that is how they were only available.

Great advice, thanks for the pics to check motor fitment! Brushless non-sensored will be fine for bashing and racing around. I would keep the kv around 4000, as somebody said 380BL is good motor so that it doesn't overheat and die. Yes, gotta watch motor can length, that Traxxas mini brushless is almost too long.

Mamba Micro X esc/motor combo with 0808-4100KV MOTOR would prolly be good in these. Run the HK 380 BL motor or Traxxas Mini BL if you want a little more.

Mamba Micro X Extreme 1:18 Scale Combo with 0808-4100Kv Motor

Good recomendation on replacement electronics for good price...I'd run those! :)

Good recomendation on replacement electronics for good price...I'd run those! :)

Yes, hop-ups should not be required right away, where's the kit or ARTR? :) Love these little 1/18th, Axial just needs to perfect the electronics and/or sell ARTR or kit! 8) :)

Re: Axial 1/18 Yeti (and Yeti Score)
 

FWIW I just put the HS-65MG in and ran a pack through it with no issues. Steering is pretty good now. They're still big, soft tires for a tiny servo but it's controllable and a lot of fun now. I beat it pretty hard and couldn't break anything so there's a positive lol.

Re: Axial 1/18 Yeti (and Yeti Score)
 

Just out of curiosity. Has Axial made any sort of comment about the poor quality of these new Jr. RTR's electronics? It just seems that these vehicles have a far higher failure rate than any other RTR I've seen released. There are typically a few bad eggs in a batch but this seems pretty far reaching.

Re: Axial 1/18 Yeti (and Yeti Score)
 

Just to clarify for those looking for a new motor on these.
The stock 380 Motor is Ø28mm x 40mm can Length.

If you are looking for motors to fit this, look for Ø28mm sized motors.

For a brushed motor, this is going to typically be labeled as 380, but keep in mind some motors are actually more like 380 XL, like the Traxxas Titan 380, which is 28mm in Diameter, but longer than 40mm long. You may see something listed as 400 size, or 370XL, or something similar. Look at the motor dimensions. They will give you diameter and can length. If they are similar to the stock motor, it will probably work.

For a brushless motor, they typically list the dimension as the size of the motor. For example, a 2850 motor is 28x50 or 28mm diameter x 50mm length.
The Traxxas motor posted a few posts back (VXL 380) is a 2848 size - Ø28mm x 48mm long.
Most 1/18 scale brushless set-ups I've seen are smaller can diameters, like 2040 or so typically. These should still work, but they won't be able to produce as much power as the larger 28mm diameter motors.

One other thing to consider is number of turns or KV (covered in other threads, but will touch on here)

A brushed motor will be listed with number of turns - The stock motor is 40 turns. This is the number of times the wire is coiled around the each stator arm inside the motor.
The higher the number, the slower the speed, but higher torque (good for crawling).
The lower the number, the higher the speed, but lower torque (good for go-fast racing).
Most ESCs will have a limit on the minimum # of turns that you can use, so check that with the ESC you will use. The stock ESC doesn't list that (that I could find) so I would stick with something around the same number of turns as the stock, otherwise, you will need a new ESC.

A brushless motor will be listed as kv. This means for every volt of electricity, you multiply the kv number to get the RPM.

So, a 4500 kv motor on 2S lipo power is going to max out at 37,800 RPM (at 8.4V) and typically run at around 35,000 RPM (at 7.4V). The same motor on 3S lipo would be almost 50,000 RPM max.
A high KV motor will be faster, but have less torque. Vice Versa for a low kv motor.
The ESC may have a limit on the max RPM or max KV that it supports, so check that when you are shopping.

Axial 1/18 Yeti (and Yeti Score)
 

Right on. I've got a 2838 3600kV I'm going to try. I've got multiple pinions to try out, too.

Not mentioned is the way this motor is mounted. Depending on the pinion size, it can allow the motor to rotate further to the outside allow a longer can.

Re: Axial 1/18 Yeti (and Yeti Score)
 

got this Traxxas servo on order and two lipo 2s 35 coming , any idea if that servo will fit ..I'm take a gamble since truck not here yet ....It's waterproof and cheep and figured if it works well in a Revo mini why not in the yeti .
http://uploads.tapatalk-cdn.com/2016...d6acb96034.jpg

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Re: Axial 1/18 Yeti (and Yeti Score)
 

Comparing the dimensions to what I just put it mine it'll be a little deeper and wider. It looks like it'll fit but it'll be closer to the center shaft and a bit wider. It's cheap, 41oz/in, and waterproof. Looks good.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I have that servo and briefly dropped in the spot. The wire comes out the back of the servo which immediately turned me off to using it in this application cause of the center shaft

Re: Axial 1/18 Yeti (and Yeti Score)
 

I just put a cheap mg90 in and it fit like a glove. Pulled the motor and attempted to put a 2838 brushless and it doesn't work that well. The motor mount is an issue. The holes had to be drilled out to accept an m3 bolt. Then the little 10 tooth pinion is for a smaller shaft and counter sinks into the mount itself. The smallest 3.125 I've got is a 15 tooth and it ain't fitting. The area where the set screw goes counter sinks into the motor plate. Other than needing the tapered head 10mm m3 bolts and not having a pinion that would fit in the hole, it would've worked.

Stock configuration. Someone needs to address this and take my money.
http://uploads.tapatalk-cdn.com/2016...e94d727bde.jpg

So I dug out this old Losi combo. It's a 24mm can and I had doubts about the power.
http://uploads.tapatalk-cdn.com/2016...930d2f7cd7.jpg

This smaller motor has the proper size shaft for this 10 tooth pinion. While buttoning the chassis back up I stripped two bolts already. I just so happen to have several bags of these m2.5 bolts and some the proper lengths. They don't have the button heads, though.


I will say this. I am surprised at the amount of power put out by this little 24mm motor. It cogs like damnit being unsensored and 4500kV. But in my garage will do standing backflips when it catches.

I'll be looking for a motor in the 2000-2500kV range or figuring out how to make the larger 28mm motors work.

Axial 1/18 Yeti (and Yeti Score)
 

Someone handy with a lathe that can turn out something like this? Or a 3D printed one may hold up in his scale.

http://uploads.tapatalk-cdn.com/2016...c18215f9fe.jpg

http://uploads.tapatalk-cdn.com/2016...e715059eaf.jpg

Re: Axial 1/18 Yeti (and Yeti Score)
 

I assume we will see a metal motor plate soon enough. I would like to see a 2 piece upper stay to make adjusting the pinion mesh a bit easier. I look forward to seeing Hot Racing do their thing with these little tikes.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I have that motor in a mini 8 and it hauls, it's a lot heavier too. I was hoping to put my spare motor in the Jr. Thanks for the pics

Re: Axial 1/18 Yeti (and Yeti Score)
 

I don't know how much smaller a pinion is made for this shaft, but I will be looking today. I also noted the spur setup was odd. There's no slipper and the plastic shafts are flexy and I'll assUme are that way to take some of the shock loads out of the drivetrain. The spur has a bearing on one side and nothing on the other. It's also held on with a pin. Once some slack is worn into the immediate area it'll fail.

Axial left several areas for improvement: motor mount, spur gear area, bulky and unnecessarily heavy battery mount, and there seems to be some binding in the steering on mine.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I had binding in my steering too. It was the very tight fitting ball cups. I used a sharp hobby knife to trim some of the inner lip that causes these things to be almost impossibly hard to snap on. I had to do the same thing to my shock links and trim off excess mold material on my A-arms. Honestly these things got released in rough shape. My shocks even get stiff after a few minutes of inactivity, just like my stock scx10 shocks did. You have to give them a quick compression before you drive to wake them up.

Re: Axial 1/18 Yeti (and Yeti Score)
 

My look over last night wasn't too thorough. After things settle down holiday wise I'll go back through it and shave some of the steering components until its smooth. The 4500kV motor is a bit much and I'll order that brushed ESC linked a page or so back. I've got the bigger version of that one on my scx10 and it's nice. It does like to roll a lot and after 2-3 walks of shame I grow tired of it.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I've got a 9t, haven't seen any 8s.

Re: Axial 1/18 Yeti (and Yeti Score)
 

I wouldn't think they'd get much smaller. Maybe some of the Dromida guys can pitch in.

I've made a few laps up and down my driveway and it makes giggles at speed, but stays upside down maybe 30% the time or at least rolling.

I don't think it can handle a 28xx BL motor. I've decided to go back brushed until the aftermarket catches up.

Re: Axial 1/18 Yeti (and Yeti Score)
 

Well, like the rest, my electronics crapped out the second after i put a lipo in it. I never even hit the throttle. The second i touched the steering it went down unresponsive.

I have a mamba micro x/ 4100kv, but thought I'd see how the stock motor would do on 3s.

Luckily i had everything i needed in a drawer to make this thing awesome.
Rc4wd 1.55 racelines- i won at ecsc this year
Hs-5245mg- left over from a dig setup i removed
Titanium turnbuckles- from an rc18t turned rc18r
Ae-5- from my bomber (now sold)
380 size heat sink- someone gave to me. Slotted for cooling vent.
Spektrum sr3100 rx- i always have a couple extra rx, just in case.

I had to make a little bracket to mount the servo. I hate cutting up a new chassis. The bracket was pretty simple to make. Im using a stock wraith servo mount on the other side.

I just accidentally deleted all 55 photos of the progress. So here are some crappy ones after everything was already installed.

Heat sink, because i had it and they never hurt. You can kind of see the slots i put in to open up the vent hole in the motor.
http://i288.photobucket.com/albums/l...psezpwfnoa.jpg

Turnbuckles, the toe in up front was excessive. I plan on ordering a complete titanium turnbuckle set for the rc18t. That should be enough to titanium adjustable the rest of the links.
http://i288.photobucket.com/albums/l...ps2fbjexjm.jpg

The servo, i had some great pics of the bracket i made, but...dammit. I can pull it back apart and take some better pics if anyone wants to see them.
Stock wraith mount on the left side (edit: with spacers), all the way back in the slotted hole, and my bracket to offset the front mounting hole about an 1/8"
http://i288.photobucket.com/albums/l...psizr2pp0f.jpg

Ae-5, already had the stock bullets, so no soldering required. Servo taped to the top of the servo. Rx servo taped to the side of the esc heat sink.
http://i288.photobucket.com/albums/l...pszhe9i67o.jpg

Wheels, i toaster ovened the stock wheels and tires. Be careful though. 10min. At 300° started to melt the wheels, but was just enough time to separate the tires.
http://i288.photobucket.com/albums/l...pseldrqqrk.jpg
http://i288.photobucket.com/albums/l...pspqxmaq6q.jpg

Had to put in a m3 cone washer between the wheels and the hex to keep the wheels off the knuckles. The wheel hex is a little deeper than the front hex. The wider hex in the rear had no issues.
http://i288.photobucket.com/albums/l...ps64h2rlsp.jpg

I've ran two 1300mah 3s packs through it so far with no issues. Motor and speed control barely brake 100°.

With 61oz. @ 4.8v the steering is excellent. 3s power brings this thing alive with stock gearing and no heat issues. This thing is an absolute blast to drive now.

Re: Axial 1/18 Yeti (and Yeti Score)
 

Surprisingly this plastic drivetrain is up to the task of brushless lipo power.

Re: Axial 1/18 Yeti (and Yeti Score)
 

Got my replacement ESC in. Took advantage of an Amain coupon and free shipping so it only ran me $35. Overkill for sure but it's small and waterproof, switchable 3amp BEC for 6v or 7.4v, good for 2s or 3s, and many other programmable features with the included card. I've wanted to try one of these new Hobbywing 1080 ESCs for a while and this was the perfect application for me. I have everything I need now to get her running except for a servo horn. I'll hit up the LHS as soon as these holidays blow over and get this thing in the dirt where it belongs instead of on my bedroom dresser.

Axial 1/18 Yeti (and Yeti Score)
 

That ESC is a little big.

They have a smaller one that is 3s capable but doesn't have the programmability. It's the one I was thinking of ordering. I have one like yours on my scx10 and it is great so far.


http://www.hobbywing.com/goods.php?i...5635.0.0.0.0.0

Re: Axial 1/18 Yeti (and Yeti Score)
 

Might have to order me one of those once the Christmas break has blown past