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-   -   Axial 1/18 Yeti (and Yeti Score) (http://www.rccrawler.com/forum/axial-yeti/574516-axial-1-18-yeti-yeti-score.html)

84yoda 01-06-2017 07:03 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Just FYI for anyone wanting to run smaller losi micro pinions (mmx combo), LOSB1260 is 9T-12T pinions.

svt923 01-06-2017 07:09 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
In case anyone was wondering, the Tactic TX300 radio (from any other Axial RTR) will bind straight to the stock electronics. It feels like a high end radio after using the awful stock one for about 5 minutes.

Of course, most people will be tossing more of the stock electronics than just the radio. :mrgreen:

colbynobo 01-06-2017 08:08 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by svt923 (Post 5645921)
In case anyone was wondering, the Tactic TX300 radio (from any other Axial RTR) will bind straight to the stock electronics. It feels like a high end radio after using the awful stock one for about 5 minutes.
That's really good to know. The battery for my Score Jr. is sitting underneath my desk, charging right now. When it's done, I'll pop the AA batteries into the stock transmitter and take it for its first run. I have a stock RTR radio left over from my Bomber that'll be a good match for my subsequent runs. Thanks for giving this tip.

racinfast002 01-06-2017 08:57 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Everyone! Stop what your doing and immediately slap a new esc that is 3s capable in it and go bash. Holy crap this was a brilliant idea! So freaking fun on 3s

Lavaheadache 01-07-2017 06:57 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by racinfast002 (Post 5645983)
Everyone! Stop what your doing and immediately slap a new esc that is 3s capable in it and go bash. Holy crap this was a brilliant idea! So freaking fun on 3s
We already did, what took you so long?

racinfast002 01-07-2017 08:41 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by Lavaheadache (Post 5646118)
We already did, what took you so long?
Just got it 2 days ago hahaha. It's a blast on 3s. Worried about burning that little motor up, but will see how long it last.

Lavaheadache 01-07-2017 03:23 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Just broke a rear axle shaft and there seems to be nowhere to get one. I'm not pissed it broke just bummed I can't use the truck till I find a replacement. Watch out for high grip surfaces and extreme brushless power =)

chicostaxxs007 01-07-2017 06:37 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
so whats the best servo for this yeti jr something that'll drop right in?thanks

colbynobo 01-07-2017 08:03 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by chicostaxxs007 (Post 5646455)
so whats the best servo for this yeti jr something that'll drop right in?thanks
Apparently the answer is something with the dimensions of 22.8X12.0X25.4, but with more than Torque(@6.0V oz-in): 30.6. When I purchased a Yeti Jr. Trophy last night at my local hobby shop, these are the specifications of the best micro server they had available - a Savox 253. It does a marginally better job than the stock servo at centering the wheels. I'm going to need something more powerful.

I learned today that both the stock servo and the Savox 253 do not like the cold. When I ran the Yeti Jr. last night when it was -4 with the stock servo it stopped moving the wheels. I assumed it was bad, installed the Savox and had the same result. Today, I removed the stock receiver/ESC, installed a different receiver and a Dynamite WP 60A and experienced the same thing when it was 22 degrees. Both servos acted fine (except for not centering) when I ran the truck inside my office building. I have not encountered this with any of my vehicles with full-sized servos. I guess the Yeti Jr. questions my sanity.

svt923 01-07-2017 08:35 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by colbynobo (Post 5646496)
I learned today that both the stock servo and the Savox 253 do not like the cold. When I ran the Yeti Jr. last night when it was -4 with the stock servo it stopped moving the wheels. I assumed it was bad, installed the Savox and had the same result. Today, I removed the stock receiver/ESC, installed a different receiver and a Dynamite WP 60A and experienced the same thing when it was 22 degrees. Both servos acted fine (except for not centering) when I ran the truck inside my office building. I have not encountered this with any of my vehicles with full-sized servos. I guess the Yeti Jr. questions my sanity.
Did you reuse the stock servo saver?

The spring in the servo saver is incredibly weak and is as much to blame for the mushy steering as the weak servo. Any extra steering torque would just be wasted by the servo saver.

84yoda 01-07-2017 09:16 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Picked up a hitec 225mg (67oz at 6v). Standard 24t spline and 2.6mm servo screw. Also picked up losi mrc servo posts.

Exiwolfman 01-07-2017 09:58 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by chicostaxxs007 (Post 5646455)
so whats the best servo for this yeti jr something that'll drop right in?thanks
Not a drop in but I'm running a full size servo .

Sent from my XT1575 using Tapatalk

colbynobo 01-08-2017 12:48 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by svt923 (Post 5646510)
Did you reuse the stock servo saver?

The spring in the servo saver is incredibly weak and is as much to blame for the mushy steering as the weak servo. Any extra steering torque would just be wasted by the servo saver.
Does this mean that I should remove the servo saver and in the interest of gaining better/more consistent steering just accept the risk of destroying more servos?

Is it possible that the cold air is causing something else in the steering to contract or bind and overwhelming the small amount of torque generating by the servo?

svt923 01-08-2017 11:27 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by colbynobo (Post 5646580)
Does this mean that I should remove the servo saver and in the interest of gaining better/more consistent steering just accept the risk of destroying more servos?
Yes, absolutely.

Between the plastic tierods, steering rack, and steering link, there is more than enough flex in the steering system to absorb crashes. The ball cups will also pop off in a big enough crash to prevent too much strain on the servo. I have no worries of ruining a quality metal gear servo in this truck (or any of my trucks for that matter) by not running a servo saver.

redeyechris 01-08-2017 11:45 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
I was thinking of using a standard servo horn on Hitec 5085. Is it possible?

Lavaheadache 01-08-2017 12:03 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
anyone have rear axles they can help a brother out with?

chicostaxxs007 01-08-2017 05:05 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by MaxxPain (Post 5615554)
I got the HS-85MG installed tonight with a Dynamite servo arm. Also has the larger holes so the ball joint dropped right in. Wow, the truck turns great now. I decided to cut off the motor plugs and soldered them direct to the motor. I'm not sure if I missed it in the thread, but to get the HS-85mg installed with the stock ESC case, I had to use a cut off wheel/Dremel off the servo ear from the ESC case to get it to fit as the servo is wider. No problem. The ear I cut off I still used to mount the servo.

http://www.rccrawler.com/forum/membe...s412-63316.jpg
MaxxPain is the HS-85MG 24 t or 25? thanks

84yoda 01-08-2017 06:59 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Hitec is 24T.

chicostaxxs007 01-08-2017 07:17 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
just ordered quickrun 1625 brushed esc $23,flysky transmitter, reciever n power HD 1711 servo. if it works out i'll have to order 2 more of everything. i should've stayed in the 1/10 scale

Jrardon 01-08-2017 07:26 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by colbynobo (Post 5646496)
Apparently the answer is something with the dimensions of 22.8X12.0X25.4, but with more than Torque(@6.0V oz-in): 30.6. When I purchased a Yeti Jr. Trophy last night at my local hobby shop, these are the specifications of the best micro server they had available - a Savox 253. It does a marginally better job than the stock servo at centering the wheels. I'm going to need something more powerful.



I learned today that both the stock servo and the Savox 253 do not like the cold. When I ran the Yeti Jr. last night when it was -4 with the stock servo it stopped moving the wheels. I assumed it was bad, installed the Savox and had the same result. Today, I removed the stock receiver/ESC, installed a different receiver and a Dynamite WP 60A and experienced the same thing when it was 22 degrees. Both servos acted fine (except for not centering) when I ran the truck inside my office building. I have not encountered this with any of my vehicles with full-sized servos. I guess the Yeti Jr. questions my sanity.


Ive found that the steering linkages are tight and add to the drag. Next time you remove the servo linkage swing your steering and note how tight it is. Add subzero temps and that plastic would be even tighter. I've spun the ball ends with a ball and some graphite to try to loosen the steering. Helped a bit.


Sent from my iPad using Tapatalk

colbynobo 01-09-2017 12:53 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by Jrardon (Post 5646985)
Ive found that the steering linkages are tight and add to the drag. Next time you remove the servo linkage swing your steering and note how tight it is. Add subzero temps and that plastic would be even tighter. I've spun the ball ends with a ball and some graphite to try to loosen the steering. Helped a bit.
Okay, I've got a Hitec HS-5085 and aluminum spline on the way. The specs say twice the torque of my current servo. I'll try to fit the Savox 253 into my Latrax Rally so it doesn't go to waste.

I've been setting up little courses using random things found in the office as obstacles and I must say this thing is a blast to drive. I just need to get the steering more consistent and dial in the front shocks. Anyone with a Trophy Truck care to share what they're running for shock oil?

Chris_K 01-09-2017 04:02 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Well I discovered that you can modify scx10 shafts to fit the rear. Just have to cut to length and drill the hole for the pin. No more broken axle shafts.
http://uploads.tapatalk-cdn.com/2017...3161ec70d3.jpg

Sent from my SAMSUNG-SM-G890A using Tapatalk

hillbillyHILL 01-09-2017 06:07 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Yeti score 5300kv Castle brushless 26mph 12t pinion

Chris_K 01-09-2017 06:38 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by hillbillyHILL (Post 5647442)
Yeti score 5300kv Castle brushless 26mph 12t pinion
2s?

Sent from my SAMSUNG-SM-G890A using Tapatalk

Poprivet 01-09-2017 06:43 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by Chris_K (Post 5647378)
Well I discovered that you can modify scx10 shafts to fit the rear. Just have to cut to length and drill the hole for the pin. No more broken axle shafts.
http://uploads.tapatalk-cdn.com/2017...3161ec70d3.jpg

Sent from my SAMSUNG-SM-G890A using Tapatalk
Any slop in the diff side? Did you have any trouble drilling out for the pin?

Poprivet 01-09-2017 07:18 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
I got my tie rods sorted out with some Associated Factory Team parts.
Titanium turnbuckles (fits RC18T) ------------- #21055
Blue aluminum ball studs (fits all RC18's) -- #21241 (x2)
Long ballcups (fits RC18T2) ----------------------- #21387

It's not the budget friendly version at around $50 total, but i have no fear of failure for sure.
http://i288.photobucket.com/albums/l...psabw6fawv.jpg
http://i288.photobucket.com/albums/l...ps3y6unyik.jpg

Chris_K 01-09-2017 07:18 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by Poprivet (Post 5647454)
Any slop in the diff side? Did you have any trouble drilling out for the pin?
No the pin is a tight fit once the outer coller on the side gears. No trouble drilling them but you can't do it by hand. Just mill a small flat, peck it with the center drill and then drill it with a 5/64" or #47 bit. I still need to find some permanent bearings to use, right now I just have some small traxxas bearings pressed in the stock ones. Forgot to measure the thickness so if anybody knows what it is I'd like to know.

Sent from my SAMSUNG-SM-G890A using Tapatalk

im2tall 01-09-2017 07:27 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Got mine a couple of hours ago,and read all the complaints about electronics not working! I said it more than likely won't happen to me! Well I was wrong:oops:it showed up about 3hrs ago,and already has a 7200kv:lmao:!
http://i1127.photobucket.com/albums/...pstnah8oat.jpg
http://i1127.photobucket.com/albums/...psilm2sw3h.jpg
http://i1127.photobucket.com/albums/...ps6exab46b.jpg

colbynobo 01-09-2017 08:36 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by im2tall (Post 5647480)
Got mine a couple of hours ago,and read all the complaints about electronics not working! I said it more than likely won't happen to me! Well I was wrong:oops:it showed up about 3hrs ago,and already has a 7200kv:lmao:!
I like how we all think we're going to be the exception. I thought the same thing right up until the point the servo stopped moving. I take it that even with servo upgrades people still find that it's not wide enough to allow an ESC mounted on top to clear the driveshaft?

monkeyracer 01-09-2017 08:38 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
My stock electronics probably still work. I took them out after the first battery, but they worked at that point. Seems a lot didn't even make it that far.

hillbillyHILL 01-09-2017 09:38 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by Chris_K (Post 5647448)
2s?

Sent from my SAMSUNG-SM-G890A using Tapatalk
Yah 2s..didn't even get warm might up the pinion but damn it's hard to drive. Way top heavy and does 15 cart wheels if it hooks.

Lavaheadache 01-09-2017 09:49 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by Chris_K (Post 5647378)
Well I discovered that you can modify scx10 shafts to fit the rear. Just have to cut to length and drill the hole for the pin. No more broken axle shafts.


Sent from my SAMSUNG-SM-G890A using Tapatalk


That's awesome man!!!! might have to go this route.

SCREAMER 01-10-2017 10:33 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Chris K, nice job on the rear shafts. It's just my personal opinion but I would wait until we have a stronger locker or diff solution for the rear axle before doing this mod though. Having these steel shafts in the rear which are undoubtedly the strongest part of the entire truck now will guarantee that rear differential will shred itself to pieces in no time. Once the entire rear axle is beefed up that puts the "fuse" point on the rear plastic dogbone driveshaft and that would be a cheap and simple fix requiring no tools and you could keep a couple spares on hand.

SCREAMER 01-10-2017 10:49 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
2 Attachment(s)
Thanks again to the guys that posted up info on these Team Associated Ti turnbuckles. For $23 shipped, I love this mod. Plenty of much needed adjustability, less slop in the steering, much higher strength, and only 1 gram of added weight total compared to the 4 plastic pushrods replaced. They also look fantastic compared to the stockers. Little things like this make the car look not so budget.

colbynobo 01-10-2017 10:55 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by monkeyracer (Post 5647517)
My stock electronics probably still work. I took them out after the first battery, but they worked at that point. Seems a lot didn't even make it that far.
Monkeyracer, since you also live in Colorado/Crawlerado and thus have to deal with the exact same weather, I'm curious as to whether you've also experienced cold-related steering issues with your original and upgraded electronics? I started off running a pack last night in my garage and the steering was fine, then I ran out into the driveway where it was 40 degrees and raining - after a few minutes the steering started to get stiff again. I then went down into my basement where everything returned to normal. The other difference here is that the basement floor is polished concrete so there's not a lot of traction and load on the tires when they're turning.

Brake Weight 01-10-2017 11:15 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
I ordered a 24mm 3000kV sensorless motor from China/Singapore/Hong King to try out. With a low kV motor the pinion options are more usable instead of just hauling ass, warp speed, and sumbeach look at that go.

Chris_K 01-10-2017 11:23 AM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by SCREAMER (Post 5647745)
Chris K, nice job on the rear shafts. It's just my personal opinion but I would wait until we have a stronger locker or diff solution for the rear axle before doing this mod though. Having these steel shafts in the rear which are undoubtedly the strongest part of the entire truck now will guarantee that rear differential will shred itself to pieces in no time. Once the entire rear axle is beefed up that puts the "fuse" point on the rear plastic dogbone driveshaft and that would be a cheap and simple fix requiring no tools and you could keep a couple spares on hand.
The diff should be plenty strong in stock form, I'm more worried about the center driveshaft next since it's the only plastic shaft left in mine. The replacement shafts from axial are $28 and I only have time plus 20 bucks for these.

I ran it some today and didn't have any problem. Biggest problem I have now is ballooning the tires and flipping.

Sent from my SAMSUNG-SM-G890A using Tapatalk

DenisLM 01-10-2017 01:07 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
It's about time to have the Yeti 1/18 forum/folder. it's getting hard to search for older posts here...

84yoda 01-10-2017 02:07 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
I see why castle suggested 13-16t pinions. I picked up the 9-12t pinions hoping I could use the 10t and only the 12t pinion will work. Pinions fit so tight on the castle motor shaft too, its ridiculous. Not a fan of the TINY screw on these losi pinions either.

Lavaheadache 01-10-2017 05:18 PM
Re: Axial 1/18 Yeti (and Yeti Score)
 
Quote:
Originally Posted by 84yoda (Post 5647848)
I see why castle suggested 13-16t pinions. I picked up the 9-12t pinions hoping I could use the 10t and only the 12t pinion will work. Pinions fit so tight on the castle motor shaft too, its ridiculous. Not a fan of the TINY screw on these losi pinions either.
.

I'm using the 10t without issue. What seems to be your trouble? Like you, I'm also not a fan of the set screw. Unnecessarily small.


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