How to Add Underdrive in Redcat Ascent Crawler
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- Опубліковано 30 лип 2024
- Installing underdrive/overdrive in a crawler is a great way to improve the steering radius and help the truck climb up and over obstacles.
Great news! Redcat provides the ability to get either 10% or 20% underdrive on the rear axle straight out of the box! In this video, I show you how to easily swap the gears to change this ratio in the Redcat Ascent crawler.
Interested in getting one? You can get it straight from Redcat here: www.redcatracing.com/?ref=faS...
Or you can get it from AMain Hobbies here: bit.ly/3PZEPwY
Need thread locker? This is what I use: amzn.to/3QpnzTy
Video timeline:
0:00 Underdrive
0:35 Benefits
1:09 Removal
2:22 Shortcut
2:53 Gearing Options
3:36 Assembly
5:21 Results
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I think you showed us how to do it the hard way! I'm not complaining because now we know it's easier to do it with the gearbox still in the truck! Great video either way so thanks 😉kia kaha
Yes! I think there is an easier way for sure!
He explained that in the video 2:30
Great video, you always get right to the point and I like that. Thanks!
Glad it was helpful! Thanks for the kind words!
Nicely done, i may just have to get one of these!! Did not know it came with underdrive gears
It does! Right in the box.
I would be really curious what mods you would do to it.
This truck has so many things to like... including knowing that you dont need to spend $30 to get overdrive/underdrive out of the box.
Amen!!!
i got a fusion se 1200v put in mine and put it on my radiolink rc8x that will be the next thing i tackle but i saw ur comment about the metal gears redcat offers so il prolly just wait to get those before i UD it thanks for this video when i do get mine ill be ref back to it 😁😎
Great! I bet that Fusion does great in it!
no grease on the gears and yes that was the hard way it was made so we can pull the rear driveshaft the 2 tranny bolts and gotta pull a rear link to allow room for the rear shaft to come off which if ya trim it down a bit that fixes that issue they deff thought this truck out ive known about if for a while now i know someone that was doing some testing on them
Yes! Great they made it easy for us!
Thanks for posting this, while I'm sure I could have done the math, I chose not to! Shared on my channel. Cheers!
Glad it was helpful!
Great video
Thanks!
Great troy,keep on and I'll know what to do before i get one,lol
That is exactly the goal!
Thanks for the how-to. I'm looking at getting my first crawler, and this is it. Do you mind sharing what brand of "power tool" you are using here or have recommendations for my first tool set? Thanks again
Yes! This is a great choice as a first crawler.
Here is a tool guide:
ua-cam.com/video/LCayvJUXI7g/v-deo.html
Nice 👍.
Thanks 👍
Being a redcat fan boy I definitely want one of these but maybe with a Chevy or ford body on it vs the fordatsun body that’s on these
Looks to be pretty easy to swap bodies!
Fordatsun, Fordyota, and Fordyce😂😂😂
Have a question about a different axle setup Troy I wanna use a trx4 front axle for a rear steer setup and have been trying to figure out if running that axle as a rear axle will need a different gearing inside it so that the wheel speed in the right direction and wanna find that out before I go and buy a axle and servo mount and servo and then it not work
Do you know or heard of anything that mite help me out
The biggest issue should just be rotation direction. Speed can be changed with various gearing.
I would recommend looking at the exploded diagrams for both axles. This will allow you to see teeth count, so you can calculate the gear ratio.
Also, the diagrams will allow you to determine the axle spin direction and if the center diff can be turned around to change rotation direction.
I tried to just take off the rear driveshaft and take off the rear of the case but the rear driveshaft doesn't have enough room to take it off of the shaft. So, you'll have to at least take off the rear driveshaft and unscrew the trans from the skid. You could probably leave the other driveshafts on, but they'll probably fall off anyways lol.
I put in the 20 percent underdrive and also got the treal overdrive ring and pinion. I wonder how much total overdrive that is.
That should be a LOT of difference.
If you do the tape test like I showed here, you should be able to estimate the % total overdrive rather easily.
I noticed you didn’t add any grease to the transmission gears. Is there a reason for that?
With all of my testing over the years, I have found that RC typically doesn't need such grease.
When I rebuild heavy metal gears under a lot of strain and wear - like in my 1:1 Chevrolet Chevelle.
With RCs, even with my X-maxx, we are just not talking about the kinds of forces in 1:1.
Not only did it appear to not have any Loctite but it also looked like it didn't have any grease. did you have to add any?
There really is no need for grease on plastic gears. Can actually be detrimental if it holds dirt.
Do you recommend you put grease in the gears before driving
I typically do not, or only put a very small amount.
At the RC scale, I believe grease would mostly be there to reduce rust - not really needed for wear.
How do you get the driveshaft off when stuck. Screw is out. Trying to put in underdrive. Back driveshaft stuck.
I pried it off.
I need to get a larger battery for my ascent. I have been using some batteries i have for a hosim h16p. they sort of work, but not really. What do you suggest for mostly trail driving
I was able to mount this 3000mah on the side rail: amzn.to/46Od7e3
how long does it last? it looks like a good deal.
@user-rm1qe5tv8g Honestly never ran it until dead.
We did 1.5hrs the other day on a 2200mah...
Thanks Troy
What is the difference between overdrive and underdrive
Overdrive = spinning the tires faster than original.
Underdrive = spinning the tires slower than original.
For crawling, we want to spin the front tires faster than the rear - and can do that with multiple combinations of overdrive or underdrive.
Are you concerned at all about those gears being plastic? How about if you were to put a different motor in it, like a fusion pro 2300kv?
The gears are really wide, and the teeth are big. Can they be stripped...maybe. I doubt I ever will.
I see in the manual that they do have a set of metal gears if folks need them.
@@RoadsideRC Awesome, first hearing that. Thanks!
I've been running mine with a Crawlmaster V2 and a Revolver 540 on 4S for about 6 months now for testing purposes and they still look new. I'm not easy on them, so I'd be pretty impressed if someone managed to actually strip them.
@@ShaneMikula awesome thanks for input
Iv had nothing but issues and redcat customer service wont even try make the issues right ,ill never buy another redcat ever ,junk
What issued have you had?
seems a much needed upgrade mate
*😎have a cool weekend🤓Au👍like👀fully watched🦘*
Yes, thanks!