RC4WD 1/5 scale "Killer Krawler"
#1
Moderator
Thread Starter
RC4WD 1/5 scale "Killer Krawler"
http://rc4wdstore.com/product_info.php?products_id=893
Nice looking
Different axles than the scale Yota ones too, so we still may see a large size scale trail truck chassis from them.
Nice looking
Different axles than the scale Yota ones too, so we still may see a large size scale trail truck chassis from them.
#4
Senior Member
Join Date: Jul 2005
Location: Torchy the Fiery Fast RC Turtl
Posts: 10,544
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale "Killer Krawler"
ORIGINAL: scarletboa
lol, it's brushed electric and powered by 540-sized motors[sm=lol.gif]
lol, it's brushed electric and powered by 540-sized motors[sm=lol.gif]
#7
My Feedback: (4)
Join Date: Sep 2003
Location: Temecula, CA
Posts: 5,692
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale "Killer Krawler"
That is pretty dang sweet... Wow. It is a piece of art. Those motors have their work cutout for them though, don't they? Even with gear reduction, that is a lot of weight. There are 1/10 scale motors powering a 1/5 scale truck. I am not certain you could get MM motors in there based on the proximity of the 540 motors to the links in those pictures.
#8
Senior Member
Join Date: Dec 2007
Location: , CA
Posts: 227
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale "Killer Krawler"
I don't know about that thing, at a glance it looks pretty cool, but the axles look like 1/10 axles with just larger output hubs at the end of the tubes, its using standard 540 size motors to turn tires that probably weigh in at 2 lbs each, and the speed controller appears to be for 540 size motors as well.
I understand that the electronics will be up to the end user, but I just don't think this was thought out very well, just rushed to market.
You would need axles that can take a bigger motor like a NEU or a Feigao (or even the new Losi 1/8 brushless) , a speed controller like the new Mamba Monster, and the appropriate gear reduction to handle one of these motors.
I can pretty much guarantee that this is gonna burn up any speed controller you use short of the big ones, and even then you will be cooking motors off without the proper gear reduction for the bigger motors.
Also, looks like they standard size servos in there, I wonder if it has the room to fit a larger 1/5 scale servo?? Standard size ones in a crawling application with those tiny gears trying to turn those massive tires in a crawling app will get destroyed regardless of what they(servo gears) are made out of.
Kudo's to RC4WD for starting in on a project like this, I think it has a lot of potential, but as I said, I think they should have taken their time and thought this project through a little bit more.
I understand that the electronics will be up to the end user, but I just don't think this was thought out very well, just rushed to market.
You would need axles that can take a bigger motor like a NEU or a Feigao (or even the new Losi 1/8 brushless) , a speed controller like the new Mamba Monster, and the appropriate gear reduction to handle one of these motors.
I can pretty much guarantee that this is gonna burn up any speed controller you use short of the big ones, and even then you will be cooking motors off without the proper gear reduction for the bigger motors.
Also, looks like they standard size servos in there, I wonder if it has the room to fit a larger 1/5 scale servo?? Standard size ones in a crawling application with those tiny gears trying to turn those massive tires in a crawling app will get destroyed regardless of what they(servo gears) are made out of.
Kudo's to RC4WD for starting in on a project like this, I think it has a lot of potential, but as I said, I think they should have taken their time and thought this project through a little bit more.
#10
Senior Member
Join Date: Jan 2004
Location: Monticello , IN
Posts: 379
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale "Killer Krawler"
I would have to see one in action to truely judge, but it looks very cool. I agree with DS on " Kudo's to RC4WD for starting in on a project like this, I think it has a lot of potential ".
#11
Moderator
Thread Starter
RE: RC4WD 1/5 scale "Killer Krawler"
but the axles look like 1/10 axles with just larger output hubs at the end of the tubes
Still, I don't think $799 is THAT expensive for a good alloy large scale crawler, so it leaves room for buying some fancy electronics.
#12
Junior Member
Join Date: Jul 2002
Location: Vienna,
WV
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale "Killer Krawler"
ORIGINAL: DarkSoul Racing
I don't know about that thing, at a glance it looks pretty cool, but the axles look like 1/10 axles with just larger output hubs at the end of the tubes, its using standard 540 size motors to turn tires that probably weigh in at 2 lbs each, and the speed controller appears to be for 540 size motors as well.
I understand that the electronics will be up to the end user, but I just don't think this was thought out very well, just rushed to market.
You would need axles that can take a bigger motor like a NEU or a Feigao (or even the new Losi 1/8 brushless) , a speed controller like the new Mamba Monster, and the appropriate gear reduction to handle one of these motors.
I can pretty much guarantee that this is gonna burn up any speed controller you use short of the big ones, and even then you will be cooking motors off without the proper gear reduction for the bigger motors.
Also, looks like they standard size servos in there, I wonder if it has the room to fit a larger 1/5 scale servo?? Standard size ones in a crawling application with those tiny gears trying to turn those massive tires in a crawling app will get destroyed regardless of what they(servo gears) are made out of.
Kudo's to RC4WD for starting in on a project like this, I think it has a lot of potential, but as I said, I think they should have taken their time and thought this project through a little bit more.
I don't know about that thing, at a glance it looks pretty cool, but the axles look like 1/10 axles with just larger output hubs at the end of the tubes, its using standard 540 size motors to turn tires that probably weigh in at 2 lbs each, and the speed controller appears to be for 540 size motors as well.
I understand that the electronics will be up to the end user, but I just don't think this was thought out very well, just rushed to market.
You would need axles that can take a bigger motor like a NEU or a Feigao (or even the new Losi 1/8 brushless) , a speed controller like the new Mamba Monster, and the appropriate gear reduction to handle one of these motors.
I can pretty much guarantee that this is gonna burn up any speed controller you use short of the big ones, and even then you will be cooking motors off without the proper gear reduction for the bigger motors.
Also, looks like they standard size servos in there, I wonder if it has the room to fit a larger 1/5 scale servo?? Standard size ones in a crawling application with those tiny gears trying to turn those massive tires in a crawling app will get destroyed regardless of what they(servo gears) are made out of.
Kudo's to RC4WD for starting in on a project like this, I think it has a lot of potential, but as I said, I think they should have taken their time and thought this project through a little bit more.
#13
Senior Member
Join Date: Nov 2006
Location: Buford,
GA
Posts: 339
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale
ORIGINAL: SAVAGEJIM
True, but I wonder if it i possible to mount 4x 540 cans on it with some mods? Brushless and geared down, that thing has got to be able to just about crawl over anything.
ORIGINAL: scarletboa
lol, it's brushed electric and powered by 540-sized motors[sm=lol.gif]
lol, it's brushed electric and powered by 540-sized motors[sm=lol.gif]
Don't need 4 motors.
you tube vids show it moving normaly with 2 motors, sort of like a ClodBuster.
Harry
#15
Moderator
Thread Starter
RE: RC4WD 1/5 scale
I've been toying with the idea since it came out, though I doubt I will at least for the time being. I'm not really as into crawling as I thought I was.
#16
Senior Member
Join Date: Nov 2006
Location: Buford,
GA
Posts: 339
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale
I just ordered mine. "version 2"
(Wa-Hoo)
in polished silver with the optional 24 mm hubs/ 7.9" tires/ real beadlock mag wheels.
Then Iordered 2 Futaba s9157 servo's with 425 ounces of torque for front and rear steering.
Tower Hobbies had them in stock.
Still undecieded about a body,
Thinking about a Jeep from HPI.
Possibly bright orange paint.
Any suggestions out there?
Harry
P.S. "Rushed to market"?
I don't think so............................Ha,Ha,Ha.
(Wa-Hoo)
in polished silver with the optional 24 mm hubs/ 7.9" tires/ real beadlock mag wheels.
Then Iordered 2 Futaba s9157 servo's with 425 ounces of torque for front and rear steering.
Tower Hobbies had them in stock.
Still undecieded about a body,
Thinking about a Jeep from HPI.
Possibly bright orange paint.
Any suggestions out there?
Harry
P.S. "Rushed to market"?
I don't think so............................Ha,Ha,Ha.
#18
Senior Member
Join Date: Mar 2005
Location: Kingston UK, but living in Athens, GREECE
Posts: 18,082
Likes: 0
Received 3 Likes
on
3 Posts
RE: RC4WD 1/5 scale
Top speed? lol, I jest, I jest. It does lok very cool. I'd be tempted, but if Ibought it, I know I'd just be buying it to 'have' it. I'm not really into crawling.
#19
Senior Member
Join Date: Nov 2006
Location: Buford,
GA
Posts: 339
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale
I don't know what motors/esc's quite yet.
thinking about Novak brushless GoatCrawlers and a Novak electronic Dig unit.
I have heard their rpm is a little too low for this model...may have to go with the HV 21.5 instead...
I really could use some advise.....
but for starters I have some brushed 12,500 rpm motors and a Super Rooster esc that I have left-over from another truck.
I see how these motors perform and then play with assorted pinions and various cell counts, then decide what motors I feel I need.
Harry
thinking about Novak brushless GoatCrawlers and a Novak electronic Dig unit.
I have heard their rpm is a little too low for this model...may have to go with the HV 21.5 instead...
I really could use some advise.....
but for starters I have some brushed 12,500 rpm motors and a Super Rooster esc that I have left-over from another truck.
I see how these motors perform and then play with assorted pinions and various cell counts, then decide what motors I feel I need.
Harry
#20
Senior Member
Join Date: Nov 2006
Location: Buford,
GA
Posts: 339
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale
Just a little update here.
I have decided on 80t brushed motors and 9 cell Nimh cells to get started, later it will be painless to convert to 3s Lipo power.
allso tires will be 8.26" Rock Crushers.
The rims are really nice with red beadlocks, all CNC machined out of billet Aluminum, WOW.....
I calculated top speed @ 6.2 mph.
will have to actually check it with my GPS on board to see if I am close with my estimate.
I am still waiting on the tires to arrive, so I am still wiring up the motors & painting the Jeep body for now.
Harry
I have decided on 80t brushed motors and 9 cell Nimh cells to get started, later it will be painless to convert to 3s Lipo power.
allso tires will be 8.26" Rock Crushers.
The rims are really nice with red beadlocks, all CNC machined out of billet Aluminum, WOW.....
I calculated top speed @ 6.2 mph.
will have to actually check it with my GPS on board to see if I am close with my estimate.
I am still waiting on the tires to arrive, so I am still wiring up the motors & painting the Jeep body for now.
Harry
#22
Senior Member
Join Date: Mar 2005
Location: Kingston UK, but living in Athens, GREECE
Posts: 18,082
Likes: 0
Received 3 Likes
on
3 Posts
RE: RC4WD 1/5 scale
I'm looking forward to video of this. Sheo, when I saw a new post from you, I was half expecting you to be posting pics of a box arriving on your doorstep!
#24
Senior Member
Join Date: Nov 2006
Location: Buford,
GA
Posts: 339
Likes: 0
Received 0 Likes
on
0 Posts
RE: RC4WD 1/5 scale
Just an update, The 21.5 Novak motors and 2s Goat Crawler ESC's work GREAT.
This think will crawl up "open back" stairs.
Most crawlers cannot perform this stunt.( need really tall tires to avoid going under the stair step due to the open back design.[8D]
Harry
This think will crawl up "open back" stairs.
Most crawlers cannot perform this stunt.( need really tall tires to avoid going under the stair step due to the open back design.[8D]
Harry