TRANSMISSION FIX!! Kyosho USA 1 Nitro
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- Опубліковано 28 сер 2024
- In this video I go over how to fix the common shifting problems with the Kyosho USA 1 Nitro monster truck 3 speed transmission. I show you how to remove, disassemble, clean, lubricate, re install and adjust the shift points on the transmission.
Thanks so much man! Mine is on the way and this is the first thing I'll be doing.
Excellent video. Very thorough.
I've seen some bad reviews regarding the trans in particular. Which put me off a bit. After watching this (a couple of times now) I feel pretty confident to buy one and do this fix from the get go. Been wanting one since I saw the first version in the early 90s.
I've seen some vids w metal-gear conversions but I'm not sure. Anyway. Great stuff! Cheers from Sweden!
Edit: on my truck there was a copper bushing towards the sprocket, so no spacers were needed there. I used a 0.40 mm shim on the rear. Worked great. Also had to re-adjust the gear-mesh a bit since it was quite off from the factory. So far so good. 👍🏻
Thank you very much! Go into the purchase with confidence. They are great trucks!
@@m1pistonhead Yes indeed! Actually I have a couple of clips of it on my channel now.
I’ve heard about the 3 speed issues but this video gave me the confidence to go ahead and put one of these bad boys on backorder anyway 👍🏻
Excellent! Glad I could help. You will really enjoy the truck!
Thanks bud I been wanting to purchase this truck for a while but with all the transmission issues I’ve been on hold, thanks to this excellent video it gave me the confidence to go buy it today! Thanks again
Thanks Moises! I'm glad this gave you the confidence to go buy one. You will love the truck!
Ben, I too want to know the size of the washers. I have a nitro USA-1 still in the box new never ran yet as I have seen several videos of transmission problems with this unit, your video has given me the how to fix a problem should one occurs. Please share location and size of washers or shims. Great video very detailed.
Next time I have the transmission out I will measure the thickness of the washers. Although, I believe it will probably differ from truck to truck
what its the diameter of the washers ? id like to do this mod myself@@m1pistonhead
Excellent video Ben! Extra washers makes a difference. My truck now runs better than New. Thnxz!
Thanks! Glad to hear your truck is working better now with this fix!
So much helpful to see and a very good idea to see your video .I feel pretty confident too to buy one and do this fix once I have it in my hand .
Glad to hear you enjoyed the video. You will love the truck!
I think I will buy 2 one to just keep on a shelf and one to bash hahaha . I love the look
excellent video Ben!, definitely the most comprehensive video on this truck in terms on it's known transmission issues
I cant thank you enough for responding to my comment in the last video, and then going out of your way to make such an in depth video with all the tips and pointers
you're the first one to point out the importance of removing the protective coating on the transmission from the factory using a solvent such as acetone as well as using anti seize as the lubricant most other videos recommend white lithium which i suspect is "sticky" as you described and a poor choice in this case as it will attract dust and dirt, also the tips on shiftpoint adjustment were a great bonus!
thanks again Ben, looking forward to your future RC videos
happy holidays!!
Thanks for the complimentary and encouraging words! This is what drives me to put out more content. Glad you enjoyed it!
Awesome vid thanks for the help!!!
Hello 👋 Ben my name is Scott, I’m following you now so please be kind and teach this old man a few tricks on these here trucks ok 👍🏻. Lol I bought the Revo nitro but it is not what I want. I want something that’s not difficult to keep running and they can’t be upgraded with lights and all like this one.
Hello Scott! I plan to make many more videos on r/c stuff so stay tuned!
Hi Ben, thnx for this great video and step by step instructions! I just bought this great truck, didn't drive it yet and I was kind of surprised about this issue. You don't expect such major issues on a new model. However looking at the exploded view in my manual I see the 6x13x1 shim at the rear support is already installed. Did Kyosho watch your video and solved the problem you think? This shim was not there in your model initially right? In that case maybe I don't have to do anything? Thanks for your reply! Regards, Mark (the Netherlands)
Thanks! I too was surprised at the issue, especially considering this isn't a new transmission. You would think Kyosho would have sorted it by now.. This fix works great tho!
Excellent Video 👍
@m1pistonhead appreciate your videos on this truck! Any idea why I can’t hit the throttle on mine? If I go any more than maybe half throttle, it acts like it’s in neutral w/ super high RPM and no forward movement. I’d think it’s a shift issue, but per your video it sounds like 1st gear is always engaged? I just finished the break in so I can’t imagine I broke anything. Thanks again!
Thanks Ben for the great content. I just ordered one and excited for this truck. Have you installed the 4 wheel steering yet and the LEDs for the lights? Thanks
Thanks Alex! I have not installed the 4ws yet.. not sure if I will or not. Light kit for sure tho!
I just purchased one yesterday. Will receive it sometime this upcoming week and plan to try your fix. Havent finished video yet, but after all this time, can you still confirm that these washers you added fully solve the issues?
Do you remember exact sizes of washers/spacers you used?
When you put the bearings back on the shaft how do they need to be set can’t get this same truck to work won’t go into second or third ?
You should make a video to show it well it runs and how it shifts
Check out my Part 2 video of the Break In series. There is footage of the truck running and shifting.
nah man I had the same issue with the standard battery pack, upon pulling the servo apart the wires had been separated inside the servo
No vids of the run afterwards??? 😢
Hey... I really want the MT... but I've already read a lot about the problems with the transmission... so is the problem that the transmission has too much play between the bridge... and is that solved with the washers? And why do you grease the clutches inside?
Thanks For the vid👍🏻… greetings
It's a great truck and lots of fun, I highly recommend getting one! If you follow these instructions on how to fix the transmission and also my other videos on how to properly break in the engine, you shouldn't have any troubles.
How is your transmission holding up? On my USA-1 the inside of my gear-3 stripped. So, I just replaced every part of the 3-speed with Kyosho replacement parts, but I might switch to the steel-gears available on Ebay.
Mine is holding up very well although I did order spare gears to keep on hand because I know stripping is a long term problem.
@@m1pistonhead I had to switch to the steel gears. Once I switched to the steel gears, all the problems disappeared. The stock gears kept wearing out on the inside.
@@OrcaBoat3 i can't find the gears. GTB supposedly has some gears, but I can't find it for the usa-1
Great content Ben, just purchased a USA-1. How do I know if I must perform this fix? If so where can I purchase the spacers/washer what sizes? Thanks
Thanks! The washer size is 6x13x1. If you own one of these transmissions it needs the fix.
Great video! Do you know the size of the 1 way bearing?
Thanks! I'm not sure of the exact size. The Kyosho part # is KYOIG107
When I start my mad force and am about to drive away so when you press the throttle it does not want to roll forward and the engine sounds strained, when you release the throttle and accelerate again it slams and then it can run. Does anyone here know what it could be? there is nothing wrong with the clutch I have checked, and the car rolls perfectly as long as you do not start it
do you know what the problem is?
Possibly the one way bearing in the transmission
How often would you perform this maintenance?
It depends how much you drive and in what conditions. If you drive in dirt or snow or mud a lot then I would do it every 10 tanks or so. Or...when it starts sticking shifts again.
❤🎉😮😊ไฟไฟแอดพ์สาว
Those spacers look thick on the front, something you can get from home depot or they are hobby specific ?
These can be sourced from Ace Hardware. Not necessarily hobby specific.
Will 3 in 1 oil or white lithium grease work just as well ?
@@philipsalamone8541 Personally I wouldn't use either of those. Both will tend to attract dirt and will wear away quickly. I chose to use anti seize because it will stay in place a long time without attracting dirt.
@@m1pistonhead ever try dry lubes? I use dry lube on my dirtbike chains and wearing parts exposed to sand and grit. Seems to work.
@@tikkabrno Yes I use lithium dry lube in a lot of applications but I find the anti seize to work best in these transmissions.
Are these specific sized washers or just random?
I had these laying around in my huge selection of washers so I don't know the specific size. I will say the washers on each end of the transmission will probably differ from truck to truck. However, the thin washer between the transmission and rear post needs to be very thin and have the same inner diameter as the trans shaft. With the end washers the main goal is to eliminate any end play between the shaft and posts while aligning the gears to the clutch.
Just took mine apart..inner 3rd gear is all scored up after about a quart
You should probably replace the third gear in that case. The poor factory set adjustment and sticky shift mechanism likely caused that so early.
Shift cams suck. They are never presicision machined. Kyosho shafts are soft junk. With the right materials and machining this can work so much better. And get some support on the nose of the clutch bell gears!!!!
@Chad Anderson I just bought off ebay metal gear set, new shaft and new shift cams. Gonna do it right and see what happens
@@philipsalamone8541 would you mind replying with what you bought and from where? I haven't bought this truck yet, but would do your fix day one 👌
I dont see part 2 of this
There is not a part 2 to this video
Benzla
Seems like they are designed to fall apart so people buy a tonne of spare parts 😕
The spares are cheap so I don't think Kyosho is focused on that. I would say just not the best assembly line. Once they are maintained properly they work very well.
Piece of junk. Reminds me of the sandmaster Mt that I once had. Even 10th scale nitro cars have metal clutch/gear transmissions. Kyosho really screwed everyone with this turd. They used the cheapest parts and materials on this one. Trans gears aren't supposed to be wear items. I bet it gets discontinued soon.
This 3 speed is from around 2000 it’s nothing new as is the chassis, it’s a mad force, transmission is no problem, I guess this is to just make a vid, you just wasting your time 😂