-
Welcome to RCCrawler Forums.
It looks like you're enjoying RCCrawler's Forums but haven't created an account yet. Why not take a minute to register for your own free account now? As a member you get free access to all of our forums and posts plus the ability to post your own messages, communicate directly with other members, and much more. Register now!
Already a member? Login at the top of this page to stop seeing this message.
Have tech questions? Will answer.
- Thread starter JohnRobHolmes
- Start date
MasteroFlego
Rock Crawler
magic_yeti
RCC Addict
3000watt [emoji44] which Drivetrain will survive this....
Send by my Pixel 2 XL with Tapatalk
Send by my Pixel 2 XL with Tapatalk
The Puller Pro has higher torque density per length of active motor. This either nets a smaller, lighter motor (stubby) or a more powerful motor in the same 540 size package (Puller 540). The TrailMaster is also a great choice for most rigs, and more affordable too. But people tend to overlook it and go for 4 poles because most two poles aren't very good for crawling. Turns out it isn't the two pole that is poor for it, it was just every other companies attempt at 2 pole crawling motors that was poor.
Whoops, quoted the wrong one. I zip tie or velcro my ESCs down.
I'm in process of making a line of 1/8th scale motors right now. They are being tuned primarily for off road racing needs first. Low speed control, tractable acceleration, high efficiency. It will be quite a few months before we get to production however, we need to really wring them out on the track first.
MasteroFlego
Rock Crawler
Same, the Kraton is in my future, just need to wait for the right moment [emoji41]
MasteroFlego
Rock Crawler
I found a guy in an Arrma group on Facebook who sells them at a discount, pm me if you're interested.
Sent from my Nexus 5 using Tapatalk
svt923
I wanna be Dave
So I have run a Puller Pro 3500kv on 4S in a Wraith and aside from being completely overpowered, a mix of trail driving, crawling, and some high speed hijix barely got it warm. Now I want to put one in a Yeti TT and run 4S (because I have an extra one) which will spend much more time at full throttle than in a Wraith. Does extended running at that speed cause any ill effects to the motor if temps are kept in check? The Yeti TT with it's (comparatively) small and light tires should be much less taxing than the U4 rigs running 3500 PPs on 4S, right?
I wholeheartedly endorse these motors; more information is not needed. My Tekno MT410 could use some Holmes power.
I'll PM my address so the testing unit can be sent. "thumbsup"
I wholeheartedly endorse these motors; more information is not needed. My Tekno MT410 could use some Holmes power.
I'll PM my address so the testing unit can be sent. "thumbsup"
Just keep motor temps in check and you will be fine! 180f is a safe max temp coming off a run. Your yeti won't be nearly the load that most u4 racers put on the motors.
My new Mamba Monster X uses 6.5mm bullet motor connectors, and most everything these days uses 4mm.
So, would it be OK (for crawler use) to make a set of short connectors that are 4mm female on one end and 6.5mm male on the other to allow connecting a sensored motor that has 4mm bullet ESC leads installed?
Also, it currently has a servo pigtail soldered partway down the battery leads to allow a 12v (Holmes SHV500) servo to be directly powered by the 3S LiPo battery pack of the vehicle. I have to switch the battery connector from Deans to XT60, and I was wanting to re-do the servo pigtail connection so that it connects at the XT60 connector, rather than at the mid-point of the wire as it is now.
So, would it be safe to shorten the battery leads when I re-do this wiring & connector?
Also - if I order the BWD Motor Saver from the Holmes Hobbies site, would it mount on a Revolver Outrunner?
So, would it be OK (for crawler use) to make a set of short connectors that are 4mm female on one end and 6.5mm male on the other to allow connecting a sensored motor that has 4mm bullet ESC leads installed?
Also, it currently has a servo pigtail soldered partway down the battery leads to allow a 12v (Holmes SHV500) servo to be directly powered by the 3S LiPo battery pack of the vehicle. I have to switch the battery connector from Deans to XT60, and I was wanting to re-do the servo pigtail connection so that it connects at the XT60 connector, rather than at the mid-point of the wire as it is now.
So, would it be safe to shorten the battery leads when I re-do this wiring & connector?
Also - if I order the BWD Motor Saver from the Holmes Hobbies site, would it mount on a Revolver Outrunner?
As far as the JST leads & XT60 conversion goes, I found Gear Head RC makes an in-line adapter for either Deans or XT60 battery connectors, ordered a couple - can be used for winches, servos, BEC.
Gear Head RC JST In-Line Power Adapter - XT60
Gear Head RC JST In-Line Power Adapter - Deans
I found some 4mm to 6mm adapters, on eBay - all require waiting a month and a half for shipping.
I'll make my own...
Gear Head RC JST In-Line Power Adapter - XT60
Gear Head RC JST In-Line Power Adapter - Deans
I found some 4mm to 6mm adapters, on eBay - all require waiting a month and a half for shipping.
I'll make my own...
I have a voltage ratings question, With electronics rated at 7.4v should I always interpret that as 8.4v?
Or are some things too sensitive to swing that extra volt?
Or are some things too sensitive to swing that extra volt?
mikemcE
I wanna be Dave
7.4 is 7.4 ............ smoke knows no high voltage
Hang up and Drive
Hang up and Drive
thanks for the reply, This is mostly to do with servos BTW
I just got a D series HiTec servo that listed specs for 4v-7.4v but elsewhere it listed the range as 4v-8.4v, so I know this item is fine but I have other servos that dont list the range, they just list their specs at 2 different voltages and I assume the higher voltage used here would be its limit. Is that correct?
Some items seem impossible to find voltage ranges for.
mikemcE
I wanna be Dave
Maybe, some mfgrs specs are accurate , others get lost in translation . I generally avoid overpowering as I’ve cooked my share of servos, looking for that extra..........
Hang up and Drive
Hang up and Drive
MasteroFlego
Rock Crawler
When a servo says it's rated for 7.4v, does that mean I can run it directly off a 2S lipo? As I understand it, 2S lipos have a nominal voltage of 7.4v, but when fully charged they have an actual voltage of around 8.4v.
Sent from my Nexus 5 using Tapatalk
Sent from my Nexus 5 using Tapatalk
That was part of my question, but I didn't really explain that part of it. Thanks for adding that.
Another thing I've been curious about is the metal sleeves that sometimes come on sealed cans, are they just there to put a label on or do they serve a purpose?
I'd say free advertizing and maybe cooling?Another thing I've been curious about is the metal sleeves that sometimes come on sealed cans, are they just there to put a label on or do they serve a purpose?
Sent from my Nexus 6 using Tapatalk
Ninomaniac
Rock Crawler
^this
