Here's another question I get asked very often so I thought I'd answer it right here on the blog...
Question: What's the best throttle servo for my Rampage?
Answer: The stock HX-15CS is a decent metal gear servo but I like the Hitec HS-645MG myself. Unfortunately, I don't sell them here at RampageShop.com but they are available pretty cheap on Amazon
By the way, if you found this helpful, please use one of the links in this post when you order your servo on Amazon and I'll receive a small commission.
Thanks for your support, I really appreciate it.
So, you've carefully reviewed Step One (Initial Start Procedure) and still can't get your Rampage to fire. The next step to troubleshooting is to check to see if your engine is flooded.
Engine flooding is a common problem with all large scale engines and is easily done. These motors run on air/fuel vapour and any pooled fuel in the cylinder as a result of over pulling, excessive throttle use during start up procedure, choke left on during starting etc, will inevitably result is a flooded motor.
The more the cord is pulled without it firing, the more fuel is being loaded into the lower end and the more likely it is that your engine is flooded.
How to "de-flood" your engine:
Holding the throttle at WOT during pull-starting may also bring the engine back to life, after all surplus fuel has been emptied and allowed to evaporate using steps 2 - 4 above.
Alternative de-flooding method by the engine masters at OBR:
Still no start?
Follow steps 1 - 5 again. This time, turn the H and L needles clockwise to fully close. Then pull start until you hear the engine momentarily start (pop). Then set the needles back to stock settings (1 1/4 out on the low, 1 1/2 out on the high) and pull the starter handle again. Following the choke procedure in the Initial Start Procedure may also help but use it with caution to avoid re-flooding the engine again - Listen carefully for that 'pop', un-choke and pull start again.
A badly flooded engine can be a real pain to start – be persistent with the de-flooding procedure.
Proceed to step 3 - Loose Bolts
Part three in the no-start troubleshooting guide is to check for loose bolts. Before proceeding with part three, be sure to review:
Because these engines are relatively sensitive to air/fuel mixture, a loose screw or bolt that allows air into (or out of) your engine could be the result of a no-start. Check that all bolts are tight including:
Loose bolts can easily result in too much air entering the fuel/air mix resulting in a lean seize so don't forget this simple yet very important step.
Still no start? Proceed to step four: Air Filter
Arjay emailed me a few days ago wondering if he could mount DuneRunner / TT wheels on his Rampage XT.
I've always been a fan of these wheels since I go my first Rampage TT back in 2008 so thought it'd look cool if a slapped a set on my Chimera EP Pro.
As you can see from the pictures, these wheels do fit on the Chimera but the wheel nuts will only thread about half way on so you'll want to use some threadloc to make sure they do not fall off
For the XT and XB, you have to swap out your front and rear axles as well as the hubs to the Chimera units, then you'll be able to install the wheels. Here's a quick parts list:
1 x 07427 Wheel Mount Set (4)
1 x 07409 Rear Axles (2)
1 x 07428 Universal Drive Joint (2)
I'm often asked the difference between the Rampage MT and the Rampage XT. I've been wanting to make a video for some time now but Redcat Racing has beat me to it (and done a better job of it than I would have) so I thought I'd share it with you. Skip ahead to the 3:00 minute mark to start seeing 1/5 scale:
Oneil Brother's Racing recently posted this video on their YouTube channel and it is one of the best I've seen in a long time.
Check this video out to learn:
When you are ready to upgrade the engine in your Rampage, be sure to support the awesome folks over at OBR
If you are thinking about taking the leap to 1/5 scale gas R/C, the latest in a series of videos by Redcat Racing introduces you to some of the basics of large scale. I'll post more of this series as they become available.
This video also shows just how large a Dune Runner 1/5 scale is when compared to a 1/10 Nitro Volcano trucks.
Horizon Hobby posted this YouTube video on how to start and break-in their Losi 5ive-T but the info on this video also applies to your Redcat Rampage.
Unboxing and Set-up - Losi 5ive-T
Break-In and Preparation - Losi 5ive-T
After Run Maintenance - Losi 5ive-T
Check out these other tuning and trouble shooting videos and blog posts for more tuning tips for your Redcat Rampage:
I just stumbled across these YouTube videos by poopdogsays on "Large Scale RC Carb Tuning" These are among the best videos I've found on tuning a Redcat Rampage or any other large scale RC...thanks to poopdogsays for creating these great videos.
Large Scale Carb Tuning Part 1
Large Scale Carb Tuning Part 2
How to Check for Spark in Your Large Scale RC
Be sure to check out poopdogsays' YouTube Channel for more great RC vids.
I've had a few people ask me how to install the 710006 Aluminum Rear Hubs on their Rampage X series. These aluminum rear hubs only have one upper "tab" instead of the two tabs that the stock plastic ones have so some guys have wondered if this is a mistake. My guess is that the factory decided that one upper mounting point is sufficient for the aluminum part and to this point, I haven't heard of anyone having any problems with them.
Hope it helps.
Special thanks goes out to Mark Bigelow for providing the picture...
Wondering how to correctly calculate a 25:1 fuel oil mixture for your Rampage? Check out these Apps I just found on the iTunes App Store (damn, why didn't I think of creating these apps!)
Pre-Mix Gas Oil Ratio App. Cost $0.99 at the App Store
Gas Oil Mixture Ratio. Cost $0.99 at the App Store
Premix Calculator FREE at the App Store
If you are not an iPhone / Mac person, you can also check out this free calculator for your computer.
If you are filling a 5 US Gallon gas can with fuel, you can simply add 25.6 ounces or 3 1/4 cups of oil to the can to get a 25:1 mix ratio...don't use your wife's fancy measuring cups from the kitchen though!
If you have any tips or advice on mixing fuel for the Redcat Rampage or other 1/5 scale RC's, please leave a comment below and let everyone know about it.
Hope it helps.
Hey guys I've been wanting to create a video series on starting and tuning your Redcat Rampage but haven't had the time so thought I'd post these videos for you. The first one is from HPI, the 2nd is FG. I think they are both quite good.
If you know of other good tuning, starting etc. vids, feel free to email me the link and I'll post them here as well.
Redcat recently made a change to the diameter on the X Series Rampage (XB, XBE, XT, XSC) axles and I've been getting a lot of emails asking for more info.
Hopefully this helps clarify the change for you.
Hey guys. I've been getting a lot of tech questions lately from guys about their Rampage. I'm here to help and really like answering your questions but just want to remind everyone that we have a great forum with guys from all over the world that have tonnes of experience with 1/5 scale and can likely answer your questions faster and better than I can.
Check out the forum if you haven't already done so....be sure to mention that Rob at RampageShop.com sent you : )
Just a quick video on how to remove the stock air filter from any of the Rampage models
I received the following question from John today (thanks John)
"I'm waiting for my XBE to come and I see some people have problems with the steering servo, what can be done if this happens on a new unit(warranty)? Thanks for your time in advance"
Here was my response to John:
"Redcat does have a really good warranty program and I'm sure they'll take care of you if your servo does pack it in. Here's a link to some more info on their warranty: http://www.rampageshop.com/warranty-information.html
Honestly though, I wouldn't waste my time replacing the servo with another stock unit, even if they do give you one for free (assuming yours does die). Save yourself the hassle and grab an Hitec 805bb or 5755. I run the 5755 myself and it's great.
Scroll to the bottom of this page for a 5755: http://www.rampageshop.com/redcat-rampage-parts-electronics--accessories.html
FYI, John did not order his XBE from me but that's okay, I'm here to help if I can.
What do you guys think? Did I give John the correct advice?
I've been asked a few times now about the extra parts included in the box with the Rampage XB and XB-E. Well, Ron Carlisle was kind enough to send me some pictures of what they are...shock tower braces.
Check out these pictures of how Ron installed them on his XB and trimmed the body so it would still fit.
Here are the braces installed on Ron's XB, note how he trimmed the body.
Looks good Ron, thanks for the pictures!
The Rampage XT, XB, XSC comes stock with a plastic gear plate with relatively small bearings. These bearings tend to wear fairly quickly and if left too long, will cause gear failure.
The best fix for this is to install the Aluminum Gear Plate for the Rampage MT, TT as it uses larger diameter bearings that are less prone to premature wear and failure.
I now have a complete kit including the gear plate and bearings listed in the "X" Series Hop-Ups section. Check it out here.
I received an email from Justin a couple of days ago and it sounds like he has big plans for modding an XBE!
Can you guys add your two cents to Justin's questions by clicking on "Add Comment" below...I know some of you guys will have some good advice for Justin as well.
Question: "How long do the batteries last in this thing? i see it takes two 3s, but i want to run at least two 4s, probably two 6s if it can handle that. maybe more if possible. i currently run a 6s on my short course with a castle monster 2200 and a a mamba monster esc (i fried a mamba pro already). i see on your web site you said the servo may not last long, what is the best servo you can get? is the castle 1/5 scale motor and esc better than the stock red cat? i want this thing to be rediculous!
Run Time: I've never official timed my runs but I usually get somewhere around 15 minutes or so
4s, 6s: Nope. 3s only on the stock ESC
Best Servo: Any brand name large scale servo will work. I really like my Hitec HS 5755MG
The stock steering servo on Redcat Rampages are hit and miss. My XBE servo lasted around 15 minutes while my TT servo never died.
Here's a quick vid on how to install a Hitec 5755 into your X series Rampage
I received an email from Alejandro today asking what hop-ups I'd recommend and thought I'd share my answer with all of you.
I'm not including any items that I don't stock in the shop such as the 7075rc parts that we all know are required...just the items that I sell.
As for Hop-Ups from my store, I'd start with a Hitec HS-5755MG steering servo if you haven't already replaced yours. The stock steering servo may never give you a problem but for peace of mind, I'd replace it anyway. There's nothing worse than gearing up for a day of bashing or racing only to have it cut short by a failed servo.
After that, I've been really happy with the upgraded shock towers (710004, 71005), front and rear chassis braces (077002, 077003) and the Front Upper Top Plate (710003)
I would not recommend the following:
Aluminum Upper Suspension arms. If you change your upper arms from plastic to aluminum, the turnbuckles will break. If you really want to change your upper arms to aluminum, you should also change the turnbuckles to titanium.
Steering Bellcrank. Okay, the only reason I'm saying this is that we've had a couple of experiences with poor fit and finish on this part. You may get one that is perfect or you may not...it's a crap shoot and the stock piece works as well as the aluminum so why take the risk?
077004 Upper Chassis Plate. This piece looks good, is lighter than the stock one but is not strong enough to stand up to heaving bashing. If you run on-road or simply don't bash your XBE as hard as I do, this piece may work for you.
Aluminum lower suspension arms are available but I haven't added them to the site yet. Personally, I wouldn't recommend any aluminum suspension pieces unless you primarily run on the road.
What are your thoughts? Let us know by clicking "Add Comment" below
Finally got a chance to shoot a quick video for you guys. The bumper looks great, comes with nice mounting hardware and so far has been very durable. Definately check these out if you want to save yourself some damaged parts
Here's a link: http://t-bone-racing.net/RedCat-Rampage-XB-e-Monster-front-and-rear-skid-set-47058-BM5JD05-p653.html