Losi Rock Rey - torque steer and cogging fixed!

Losi Rock Rey - torque steer and cogging fixed!
Here is a link to the 3100kv motor I used
www.ebay.com/it...

[@darrenjackson6207]

The best looking Rock Rey I've seen

[@krlaturn]

Here is a link to the 3100kv motor I used to fix the cogging. www.ebay.com/itm/High-Torque-3665-4Poles-3100KV-Brushless-Motor-for-RC-Car-Boat-off-Road-Car-/251974058645?hash=item3aaad30295:g:QPkAAOSwKrhVZSYc

[@EVERYDAYRC]

Great info for everyone Keith!! Always making it Bulletproof and you can tell you enjoy it brother!

[@krlaturn]

Thx for your support Chris! You are one of the good ones brother! A true friend!

[@Matts_ahclimbing]

When u put the thicker diff oil does that decrease. The speed Can u also explain y people want to lock a diff

[@scottbray5936]

glad to here it fixed those issues. I ran it with you that day and it was uncontrollable on 3s for sure. we will have to run it again to that super yeti you have and see which is king. great job bro.

[@krlaturn]

Mayhem RC Thx my brother. You will be surprised at the difference $100 of parts made with this rig!

[@killeroffroadhobbyz]

Thank you very much for this info very helpful

[@krlaturn]

KillerOffRoadHobbyz Glad to know it was helpful. Thanks for watching!

[@casparjenk1494]

pls do a video about how to install them

[@DoubleClutchProductions]

That is some crazy diff numbers there........Were you running a 2cell or 3cell with this rig?

[@krlaturn]

I ran 3s primarily with a low kv motor. Not sure why you’d think these are crazy diff numbers? This is a Rock Racer. Locking the diffs up as much as possible but allowing some give to save the drivetrain is the idea here. That way power will go to all four wheels when crawling over rocks rather than diffing out. But diff settings are a preference I suppose. This is a common setup for rock racing and monster trucks

[@Wanted1069]

Well... How has it survived the test of time???

[@garymcconnell1072]

Wondering could you help I have bought the kit version. And need motor and escape . Won't be crawling looking for speed and bashing

[@smiley37greg]

Ive had real good experiences with the two PowerHD servos that I own, plus they're affordable. I use a glitch buster to prevent brown outs because they have been known to be a little bit power hungry (like the name implies) The Rock Rey BND are now $249, I think I see one in my near future. Lol Cheers

[@krlaturn]

smiley37greg yes they are great for the money! I’ve also had great results with JX servos!

[@cwatson42785]

I had bought the bnd one on sale and I was clueless when it came to solid axle trucks at the time and I didn't like how it had so much torque steer and also how easy it would roll over so I sold it for what i paid for it. I still regret it and now they are discontinued. But I made up for it by trading for a super rock rey a couple weeks ago that I can't wait to run!

[@rjohn929]

Just want to point out that it is not the same as the Baja rey. The rear axle has added material around the third member and gussets to prevent flexing and help the bearing last longer. The front and rear differentials also use underdrive gearing to help prevent torque twist and reduce the strain on the housings.

[@krlaturn]

Russell Johnson Yes I did notice that, but I'm still hearing from people who have had bearing blowouts. Keep in mind this vehicle also has larger tires and a motor with higher torque than the Baja Rey. I'm glad Losi made the vehicle more durable but they should have at least upped the bearing size. 5x10 is super small for a ring and pinion..

[@rjohn929]

I understand. I have both. I didn't say it fixed the problem. Just saying that it's beefed up to help and not the same as you stated in the video.

[@rjohn929]

I also run a Metal Concepts 3rd member in my RR and an SSD third member in my BJ.

[@krlaturn]

Russell Johnson It's all good brother. I was referring to the bearings in the video

[@rjohn929]

Roger that. 👍

[@joestricklandsr705]

Very good info and update.

[@krlaturn]

Joe Strickland Sr Yes, no one is talking about the cogging or the torque steer 🤔. Rather than complain I just decided to show how to fix it👍🏼 Thx 4 watching bro!

[@nicholasstonham2757]

Great video guys

[@RCbashingtheKRATON]

thanks bro nice tips..i subbed ya

[@sarahly877]

Wanted to pick your brain. I have the Baja Rey which I know you use to have. My question is in regards to the torque steer. At full throttle I believe the front diffs out making it shoot left. Any suggestions on what diff weight to run in the center and front ? I have read on other forms to run 10k in the center and 5K in the front and I did so, and no changes. I also seen someone say 30k in the center and lite grease/open in the front, I am currently set up like that and no difference. I'm somewhat novice to RC and trying to figure out how to make it track straight at full throttle. Any suggestions would be appreciated. I mainly drive it on a small short course track we have out here but I also like to take it out on the street and do fast passes. Thanks in advance.

[@chrisfield1095]

hey man. just got a RR. my first RC. Out of the box the signal or something isn't working. i randomly lose control about 20 ft away and then i have to walk back towards the truck and it will at a random distance click back on and the truck will respond again. the distances are I consistent so I don't feel it is the primary reason. any idea what this could be? I'm an RC noob

[@bryantheisch5955]

They don’t have the Chinese 3665 3100kv in stock but they do have the 3660 3100kv, will this work the same in your opinion?

[@krlaturn]

Bryant Heisch most likely but I cannot confirm since I haven’t tried it

[@bryantheisch5955]

Ok, I’m going to try it out it’s $22 can’t beat that. I will run the 12 tooth pinion like you explained in other videos, unless you think I should try something different? You have done some nice updates on the rock reys!!

[@cristianfranco1301]

I've been thinking about getting the rock Rey but this video has convinced me forsure! Do you think you could list what you did with the steering?

[@krlaturn]

Cristian Franco This should be what you need. Hope this helps. m.ebay.com/itm/LOS331002-Losi-Baja-Rey-Aluminum-Bellcrank-Servo-Saver-Set-/401269972702?hash=item5d6d8ddede%3Ag%3AsFIAAOSwA3dYk11x&_trkparms=pageci%253Aa4332e7f-10d7-11e7-ae3d-74dbd180469f%257Cparentrq%253A0230c28315b0a7854edc93fcfff4fe22%257Ciid%253A6 m.ebay.com/itm/Losi-Aluminum-Servo-Arm-25T-Baja-Rey-LOS331007-/391687015260?hash=item5b325d8b5c%3Ag%3AU7YAAOSwLEtYiPgI&_trkparms=pageci%253Aa4332e7f-10d7-11e7-ae3d-74dbd180469f%257Cparentrq%253A0230c28315b0a7854edc93fcfff4fe22%257Ciid%253A19 m.ebay.com/itm/Power-HD-WP-23KG-Waterproof-4-8-6-0V-Super-Torque-Digital-Servo-Crawlers-/302257644438?hash=item465ff5a396%3Ag%3AdlUAAOSwzgBYzvfe&_trkparms=pageci%253Afb79192f-10d7-11e7-bb7a-74dbd1802662%257Cparentrq%253A0232fe7a15b0a2a4f862a5f5fff7e212%257Ciid%253A1

[@5.56matt4]

I've started with this servo and arm when the rack is off back order I will be installing it also, I can see the stock parts flex . Since there is not a subtrim setting in the Dx2e did you just use trim to set the steering straight and lose a little travel to the one side that the arm just didn't center up on the output shaft? I've tried the travel adjust settings and mine must already be at 150%, I'm just not getting full left but it is of course going past full lock on right. I haven't seen a programmer for this servo.

[@krlaturn]

Hobbies Sounds like you need to pull the servo horn back off and center it on the servo

[@wesleydean1358]

Do you have a link to the front links? Thanks

[@seans.youtube]

Great video! I have new RR RTR and definitely need to slow it down to make it more user-friendly. Would you still recommend the motor swap that you did on this build? I would like to use the original ESC to try to keep cost down.

[@krlaturn]

Sean Reina yes, the 3100kv is a great motor and dirt cheap! Way smoother than the stock

[@seans.youtube]

I went ahead and ordered that motor on eBay last night, wanted to get your opinion as to whether or not there are any other upgrades you would do while I was in there swapping the motor? I was thinking about throwing in a locker that I saw you use and also changing the gear to provide a little better crawling capability. Any suggestions?

[@krlaturn]

Sean Reina the motor is quick and easy to change our due to the access plate on the bottom. If you are running 2s the stock pinion is fine. But I’d recommend changing to the included smaller pinion gear if you are running 3s. As far as the center locker goes. It requires quite a bit of work to get into the center gearbox. But locking the center does help with rock crawling. It just depends on your plans of how you run it. If you want to go fast primarily I’d keep the center diff stock

[@seans.youtube]

Bulletproof RC , since my RR was originally a RTR, it didn’t come with any extra gear. So I’m thinking maybe a 10T like you used in your kit would probably be my best bet? Speed (or loss of) is not a concern. Better control on the rocks is my goal. Thanks for all your help!

[@krlaturn]

Sean Reina you needn’t worry about speed. The RR is way over geared out of the box! It’s still going to be fast on 3s with that motor and a 10t pinion

[@cannasgarden2481]

For the servo, do they make a different tooth size servo arm bc the teeth on the spektrum servo are much bigger than say a Savox servo

[@krlaturn]

Cannas Garden yes you will need a 25t servo horn for the Savox. Here is a link to the one you need. rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F273593121459

[@ChrisKnowlesTube]

Thanks for the video. I noticed you talk and show the Leopard 2200 kv motor which is now $99 on eBay, but your link is for a 3100 kv motor which is blue and $25. Which is the motor you recommend to fix the clogging please? Thank you

[@krlaturn]

Chris Knowles the blue $25 motor will fix the cogging. The leopard 2200kv actually didn’t fit because of the motor shaft being too long.

[@ChrisKnowlesTube]

Bulletproof RC Can I use the stock ESC that comes with the Rock Rey? Why did you change the pinion to the 14 from the 12, for more speed?

[@krlaturn]

Chris Knowles yep

[@robrob1596]

great video what brushless sensored ESU motor combo would you recommend? I would definitely use it for a lot of rock crawling and I would like have a drag brake. I enjoy this truck having lots of high-end torque close to 40mph, but I also want to eliminate cogging

[@krlaturn]

rob Check out my latest video! This system works great! kzbin.info/www/bejne/nHLZhKateK13j8k

[@robrob1596]

Awesome thank you. do you have any videos of you're Rock Rey with the sensored setup in action?

[@krlaturn]

rob Sorry but no. I drive solo so it's tough to drive and film. This setup really smooths it out! Trust me!

[@robrob1596]

how is stopped and changed from Factory? top end on 3s is about 45 miles an hour with a ton of torque Factory do you lose a lot of power with this setup at the top end? would Castle Creations with its Smart Sense and quiet sense be an even better option for about the same price?

[@robrob1596]

typo how has it changed between Factory Motor and sensored

[@vannonchiang666]

What servo horn did you use for the Power HD 23kg? How many tooth? Thanks

[@krlaturn]

Vannon Chiang 25t TLR 22 horn is a great fit for the powerhd 23kg

[@Salmonaxe223]

I just added a Hobbywing Xerun sensored 3600kv motor and ESC to my rock rey. I also put 1million weight diff fluid in the center diff. Setting the gear mesh is confusing. It really seemed that the best position was the stock one. Hard to check it with the paper shim, but it seems right. At the same time their is a lot of vibration. I'm wondering if that's because they use a really thick silicone lube on the gears and I switched it to a molybdenum grease. Any tips? Sound normal? It doesn't seem to sound bad with the wheels on the ground.

[@krlaturn]

Salmonaxe223 My later video I installed a 2500kv sensored setup. The vibration you hear with the wheels off the ground is the rear plastic drive shaft. At full droop the drive shaft is at an awkward angle and binds slightly. I eventually locked my center diff with the Vaterra locker and put 1million weight in the front diff to aid in crawling. The pinion mesh is easy once you notice the small numbers on the motor plate. The holes are marked with what position the motor should be at depending on the pinion gear size you choose.

[@Salmonaxe223]

Bulletproof RC I ended up adding an SSD axial wraith driveshaft (filed the ends to fit) because the stock one's pin was impossible to remove so I drilled it out. I still heard the sound with the driveshaft out. I noted the pinion numbers and stuck to the stock pinion. There are other holes in the upper right of the plate, so I thought that they might allow for fine adjustments, but it didn't seem to be consistent. (Only one position worked). I was just hoping that it wasn't going to shred itself. I never really tried to run it not under load, so the sound was alarming. Observed mesh was close to what I get when i normally setup other gear meshes. Did you lube the transmission gears with that really heavy weight silicon that comes stock?

[@krlaturn]

Salmonaxe223 I used grease front and rear. Left the center dry because I read dirt can get in and adhere to the grease causing more wear

[@Matts_ahclimbing]

When u put the thicker diff oil does that decrease. The speed Can u also explain y people want to lock a diff

[@krlaturn]

I’ll try to explain. A Rock Rey comes with a locked diff in the rear. “When you spin one rear wheel the other rear wheel spins the same direction”. The front of the rock Rey comes with an open diff. “When you spin one front wheel the other front wheel rotates the opposite direction”. The Rock Rey also has a open center diff. “If you rotate both rear tires, both front tires will rotate the opposite direction. An open center diff allows the front and rear tires to spin at different speeds. This allows power from the motor to shift to the wheels with low traction. An front open diff aids in turning by allowing both front tires to spin at different speeds. Locking a diff will make all wheels turn the same direction at the same speed no matter what. This will help if navigating rocks is your thing. Open diffs are for handling speed. Putting in different thickness oil inside the diff is a tuning option. Thicker diff oil goes inside the differential so it does not slow the car down. Hope this helps

[@krlaturn]

Take a look at the video in the link below. Thicker diff oil would go only on the spider and planetary gears. Only grease would go on the pinion and ring gears. kzbin.info/www/bejne/iYDKoJigrd95bsU

[@Matts_ahclimbing]

Thanks I will

[@kirkleaman6863]

I just orderd that motor on e bay it’s a good motor with the stock esc what size pinion should I use the stock one?

[@krlaturn]

You ordered the blue 3100kv. Correct?

[@krlaturn]

Kirk Leaman I used a 10t mod1 pinion in mine. It actually came with the Losi Rock Rey RTR as an option

[@raysutherland1546]

Hey @BulletproofRC, what bearings did you order? I looked and there's 3 different bearings to choose from, based on the thickness of the piece. Did you get the 3mm or 4mm thick ones? thanks

[@krlaturn]

Ray Sutherland I used Acer 5x10x4mm ceramic bearings MR105

[@raysutherland1546]

Thanks man. Also, which steering service horn should I get? I've been hearing of a lot of these stripping pretty easily, but there's 3 different ones listed on Losi's site, with 23, 24, & 25 teeth. Thanks again.

[@krlaturn]

Ray Sutherland That depends on the servo. If u are using the stock servo it is a 23t

[@raysutherland1546]

Hey man. Sorry to keep bugging you. Does that servo also have 23 teeth on the shaft or would I need to buy a different servo arm than the one I bought for the stock servo? Just for future reference. I can find a bunch of info on it, except that. lol Thanks

[@krlaturn]

Ray Sutherland Yes, a 23t TLR 22 servo arm works on the stock servo

[@vannonchiang666]

Is the motor GoolRC 3100kv?

[@krlaturn]

Vannon Chiang I believe so. Pretty sure I posted a link to purchase on eBay.

[@krlaturn]

Vannon Chiang m.ebay.com/itm/251974058645?_mwBanner=1

[@vannonchiang666]

Is it waterproof?

[@krlaturn]

Vannon Chiang Not sure. I really don't run in water. After damaged bearings and rusting hardware it isn't worth it for me. This is a $450 dollar rig and I try to take care of my investments. I may run it though a small stream but I don't get in water deeper than the axles.

[@vannonchiang666]

That makes good sense. I have an SCX10 which most likely will be my winter / snow trail truck.

[@Switching-Cars]

well not impressed at all with that rock rey rock racer, i bought my rock ray the 4 of april and did 3 run with it. firt the servo horn striped on it and got that repaired and went for a ride in my little yard today and now thr front drive shaft not turning, its 2wd now and the transmission is slipping bad. No hill in my little yard, no rock nothing crazy and this happens. worst truck i had in a long time...

[@ClumsyToast]

Did you just end up selling it as is? Or did you fix it up and keep running it?

[@nicholasstonham2757]

Can Americans say ALLY-MINIUM!!

[@krlaturn]

Nicholas Stonham Lol.. we could if we wanted too! But nah😉

[@nicholasstonham2757]

Bulletproof RC lol 😂

[@danthefuckinman1]

This might as well be in Chinese. I wish I could just pay someday to make my rigs sweet af.