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RE: Savage X SS Brushless Conversion Build-Discussion - 12/21/2008 5:24 PM   
tklemin


 

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Status: offline 		Ok here goes the rundown of what I bought. This used to be a Savage X SS. I bought HPI XL chassis, motor plate and drive shafts. HPI XL dogbones, extended axles and diff outdrives. Integy aluminum, ballbearing bellcrank. Kershaw Designs motor mount. Mamaba Monster Max. Associated XP digital coreless ball bearing servo's. Two E-fuel Hobbies 3S lipo batteries in series 6S power. Pure-tech products velcro straps to hold batts. Dubro rod ends with an Ofna slider kit to take some slack out of the brake. Cen Genesis wheels/tires with Dynamite 23mm hex adapters. Progressive springs. I cut down the original purple motor plate and added it in behind the XL plate to give me a nice flat area to fit the batteries. The esc mount I bent up with some .50 aluminum and drilled it to fit where the roll bar used to be. I'm using velcro and a big zip tie to hold it on right now, but Traxxas has a really cool hold down on their Revo that I'm thinking about using when its released. Proline F650 body. The KD motor plate had to be drilled and ground down a bit on one side to fit right. I'm still running the 6 volt hump pack to power the steering and braking and an Ofna failsafe. Maybe it'll give me a little more run time. I removed the red wire out of MMM BEC J-connector. I'm using a Futaba 3pm radio and Futaba 153 reciever. Throttle is controlled by the second channel as you know, but I slaved the brake on the third channel to the master 2nd channel then turned off the throttle side of the 3rd channel so it doesnt move when I hit the throttle. Thats the PMX settings on your radio if this is confusing. I then programmed my braking trim to a thumb button on my radio. I'll probably use the BEC wire to run a heatsink fan. I would have used Traxxas connectors all around, but the batteries already had deans on them and it was just easier. I'm not sure how fast it will go. Any body running a similar combo could give me some good estimate guesses. I'm running the 2-speed tranny right now with a 47t spur and 13t pinion, with 7.5" tires that grow to about 9" or 10". I'm thinking I'll need a smaller pinion, but I'm holding off untill HPI releases their new tranny and KD also has a one-speed tranny that I know nothing about. I just bought some of the new body pin straps for the HPI Baja 5T to hold down the body. The esc mount isnt to hard to make if you have a nice bender and radius blocks. It took me about 5 tries to get the width just right to go around the TVP'S. I also used the RPM center skid plate thats a little to short, but RPM doesn't have one for an XL yet. I might extend it myself with a piece of aluminum.


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< Message edited by tklemin -- 12/21/2008 5:26 PM >

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/21/2008 5:47 PM   
tklemin


 

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Status: offline 		Here are some more pics for ya.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/21/2008 6:32 PM   
dhyde79


 

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Status: offline 		love the OSXesque flecked purple X on black reminds me of my mac.....mebbe that's what I need to do, make a show body with a lil mac logo, and a beat it to death basher body and put the windows logo on it.....

"oh? yeah, that's my body that's like a mac, it never crashes, the other though, it crashes all the time, like windows"

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/21/2008 7:37 PM   
Metallover



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quote:

ORIGINAL: dhyde79

love the OSXesque flecked purple X on black reminds me of my mac.....mebbe that's what I need to do, make a show body with a lil mac logo, and a beat it to death basher body and put the windows logo on it.....

"oh? yeah, that's my body that's like a mac, it never crashes, the other though, it crashes all the time, like windows"

I've crashed an Imac before........ I've also crashed my windows every week for the past few months.

Granted, the Imac was less then a year old and had over 10 programs running including itunes, firefox w/lots of tabs, three picture things, and I was burning a DVD. I am on a crappy dell on windows and it froze with opera w/~8 tabs, Internet explorer (1 window), and itunes.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/21/2008 11:27 PM   
dhyde79


 

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Status: offline 		oh I've killed one before, but not without doing it intentionally

I gotta say though, that box setup is nice and sharp....now if only we could figure out how to make it safe to play in the snow with these MMM's cause they're a bit too pricey to risk ruining......

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/21/2008 11:45 PM   
Metallover



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Status: offline 		You could put it in a waterproof radio box. If you stay with 4s it'd probably stay cool enough. It would be tough sealing where the wires come out though..... The MM is supposed to be waterproof so I'd guess the monster is somewhat water resistant at least.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 1:31 AM   
tklemin


 

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Status: offline 		I've thought about using some of the covers around the esc from outerwears and spraying them with some waterproofing spray. That would at least make them more resistant. Any good thoughts on how to keep the balance taps clean on lipo's when runnng in dirt and water.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 1:46 AM   
Metallover



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Status: offline 		You could put a balloon/water balloon or just plastic around the end and use a small zip tie or electrical tape to secure it. If it's long enough you could even stick it in the radio box with your esc. You'll want to cover up at least the ends of the lipo so water doesn't get in. If you cover up too much, they could get too hot though. Some people say motors are OK but I would wrap it in plastic or something.

The radio is probably the most important to cover up. I was driving my recoil in the street and when I went through a little puddle the car took off and slammed into a curb at like 45 mph. You can use a balloon to cover that. It will be similar to covering the end of the lipo balance tab...

The servo's need waterproofing too. There are lots of methods, but I'd use the plastic dip method or something similar.

Other then that it should be ok, just dry it off when you get done or else it'll rust a little.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 2:11 AM   
dhyde79


 

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Status: offline 		actually, I've found on the savvy, it's not so bad for the servos and such, a little electric tape will keep the top of the throttle servo safe, and a little electric tape on the bottom keeps the steering servo safe enough, make sure the side plug's not open and keep your radio in the box and your radio's safe (my savvy was 18" underwater before it was converted to electric) and it drove out (quickly thankfully) the ESC's the only thing I'm really worried about.....I'm running NiMH packs still so the batteries are fairly safe too.....

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 2:39 AM   
Metallover



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Status: offline 		I would spray WD-40 on everything that could rust before you run it. Someone on RCM said that works pretty well.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 3:26 AM   
tklemin


 

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Status: offline 		well I'm not trying to waterproof it for submarine play. I only need it to be somewhat water resistant. I'm not to worried about the servo's or anything in the radio box, It stays pretty dry for just running thru puddles and snow. I just need to keep the esc from getting water in thru the fan area and protecting the lipos. I'm going to see if an outerwears bag will fit around the esc and maybe the batts. Always make sure and blow off your truck with shop air after play and WD40 is a good after run protectant used sparingly. I painted the axles to stop some rusting.

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< Message edited by tklemin -- 12/22/2008 3:29 AM >

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 6:14 AM   
dhyde79


 

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Status: offline 		I agree, I'm not trying to submerge mine (the only time mine's been underwater was because it tumbled about 100 yards down a steep-ish hill and landed on its wheels facing up the hill again in the pond at the bottom of the hill....) I just want it to be safe to play if I hit a puddle or if I go blasting around in the snow....I know the motor's safe, but that ESC is my worry, those things are too expensive to risk hurting....lol


oh, and what on earth kind of paint did you use to get those almost ghostly purple flames? that's sweet.

< Message edited by dhyde79 -- 12/22/2008 6:15 AM >

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 2:03 PM   
naynay12


 

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Status: offline 		Hi guys i have read the whole thread an am also thinking of doing this conversion.I would use the fiego 8xl,proably 2 7.2V packs, would this esc be ok?It seems to come with a fan and bec?
Product ID: etti-esc-race-150-BEC
Etti Brushless Navy Race 150 with BEC Details

ETTI Race 150 Brushless ESC with Battery Eliminator Circuit (BEC).
24 volt( 2-5 lipo / 6-16 NiMH)
150 amp constant Electronic Speed Control(ESC) by ETTI.
This is a water resitant esc with water cooling for Fast Electric rc boaters.

Also where do you guys get the connectors to conect all the wires,and learnwhich wire cnnects to what?Thanks.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/22/2008 4:19 PM   
tklemin


 

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Status: offline 		I used Tamiya spray can purple/green PS-46 backed with black and translucent silver PS-36 backed with black for body. I guess its a new paint from Tamiya, because I never noticed it untill lately. I put around 10 coats of it on. Its very translucent and doesn't come alive untill its backed with black. It's a color change paint that looks purple straight on and green at angles.
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXHAU8&P=7
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXFFV5&P=7

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< Message edited by tklemin -- 12/22/2008 4:23 PM >

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/23/2008 2:55 PM   
naynay12


 

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Status: offline 		If the esc i mensioned somehow wont work, with a maber monster esc,and fiego 8xl, will the motor need a fan?

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/23/2008 5:35 PM   
dhyde79


 

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Status: offline 		naynay, the wires are usually pretty straight forward, as far as whether your ESC would work, it's up to you, personally I'd stick with ones that're made to be ground based, the ones made to have active water cooling tend not to have an easy way to cool them for ground based usage unless you're planning on putting a water reservoir, pump, and all of that on the truck to keep the ESC cooled. I'd say the Mamba Monster Max is a perfectly acceptable choice....


As far as the MMM and how to make it safe to play where there's snow and such, according to the support e-mail I got from castle "The ESC is coated in silicone conformal coating...it's as weatherproof as it's going to get. Putting it in a sealed box max cause the ESC to overheat as it's not circulating fresh, colder air...only re-circulating hot air. The ESC can take running in the snow...use your body and mount it low so less gets inside. When finished, blast any snow or water off the vehicle with compressed air. If you don't have compressed air get as much snow out of it as possible, and turn the truck upside down to "drip dry". Make sure all the electronics are dry before running it again. " so I wouldn't necessarily worry about running it in the snow....I'm going to try building a cover to go over it from styrene but, I'm not too worried after that message.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/24/2008 4:30 AM   
naynay12


 

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Status: offline 		Ok thanks,and would i need a fan for fiegao 8xl?
This may be a stupid question,though is a 10.8V nimh 9 cell packs,only slightly less power then a 3s pack?They are almost the same voltage,though does a lipo 3s have something else that offers even more power?
Thes batteries are the best for the price i can find,they will work fine right?
http://cgi.ebay.com.au/2-RC-7-2V-3600mAh-10C-NiMH-1-7-2V-12V-Charger-NEW_W0QQitemZ270317894175QQihZ017QQcategoryZ19167QQtcZphotoQQcmdZViewItemQQ_trksidZp1742.m153.l1262

< Message edited by naynay12 -- 12/24/2008 5:01 AM >

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/24/2008 6:31 AM   
Metallover



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quote:

ORIGINAL: naynay12

Ok thanks,and would i need a fan for fiegao 8xl?
This may be a stupid question,though is a 10.8V nimh 9 cell packs,only slightly less power then a 3s pack?They are almost the same voltage,though does a lipo 3s have something else that offers even more power?
Thes batteries are the best for the price i can find,they will work fine right?
http://cgi.ebay.com.au/2-RC-7-2V-3600mAh-10C-NiMH-1-7-2V-12V-Charger-NEW_W0QQitemZ270317894175QQihZ017QQcategoryZ19167QQtcZphotoQQcmdZViewItemQQ_trksidZp1742.m153.l1262

With a NIMH pack the voltage will drop substantially under load and die off towards the end of the run. i.e. 9.6v pack going down to 9.0v under full throttle. Lipo's don't do that as much. They may drop from 11.1 to 11.0, but it is barely noticed. They also stay strong until they are about dead, then you can tell.

I would not get those batteries. Look on a actual hobby website and get some IB, elite, SMC, or Ener-G cells. Look at http://www.boomboombatteries.com/. They have the quality of batteries you need, but the prices are a little high. I'd save up get a lipo if I were you. You will be happier in the end.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/24/2008 7:56 AM   
fasterrcs


 

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quote:

ORIGINAL: naynay12

Ok thanks,and would i need a fan for fiegao 8xl?




i was worried about heat problems when i first setup my savage with the 8xl on 3 cell lipo 6000 and a mamba max ecs i already had. but after running it every day now for weeks i find the setup never gets hot at all neither the batt motor or esc had never gotten over 120 . after a hard bashing till the battery dumps it still just warm to the touch. as a matter of fact the esc got way-way hotter when i had it in my tc4 with the 5700 on the same 3 cells lipo.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/24/2008 8:03 AM   
Metallover



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quote:

ORIGINAL: fasterrcs


quote:

ORIGINAL: naynay12

Ok thanks,and would i need a fan for fiegao 8xl?




i was worried about heat problems when i first setup my savage with the 8xl on 3 cell lipo 6000 and a mamba max ecs i already had. but after running it every day now for weeks i find the setup never gets hot at all neither the batt motor or esc had never gotten over 120 . after a hard bashing till the battery dumps it still just warm to the touch. as a matter of fact the esc got way-way hotter when i had it in my tc4 with the 5700 on the same 3 cells lipo.

You ran a savage on 3s?? How'd that turn out for 'ya?

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/24/2008 9:25 AM   
fasterrcs


 

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Status: offline 		does great smokes the power of the 25 that came out of it. looks like it doing around 40 loads of torque . i used to need to drive all the way down the street to get it to top out now it tops out before it gets out my fount yard. i will go 6 cell soon still need the x diff and mmm esc. i have many 3 cell lipos so i will run 2.

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/24/2008 9:50 AM   
naynay12


 

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Status: offline 		Oh ok thanks,also after running lipo do they need discharging?

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/24/2008 10:07 AM   
fasterrcs


 

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Status: offline 		no discharging never completely run down a lipo it will damage it. just recharging and a balance every once in a while some chargers will do both at one time . is best to charge your lipo right away after use. i would look in the electric section for lipo info you will need to read up on them before you go out and buy one and like every thing else not all lipos are made the same get a good battery right off i would go with a maxamps from maxamps.com

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/25/2008 4:08 AM   
naynay12


 

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Status: offline 		http://cgi.ebay.com/2800mAh-11-1v-25c-30c-11-1-LiPo-3S-2800-RC-AKKU-Battery_W0QQitemZ150316965666QQcmdZViewItemQQptZRadio_Control_Parts_Accessories?hash=item150316965666&_trksid=p3286.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50

http://cgi.ebay.com/2800mAh-11-1v-25c-30c-11-1-LiPo-3S-2800-RC-AKKU-Battery_W0QQitemZ150316965666QQcmdZViewItemQQptZRadio_Control_Parts_Accessories?hash=item150316965666&_trksid=p3286.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50

What do you think of these betteries,their are alot of cheap lipos on ebay it suprises me.Whats the difference between prices,even if the mah and voltage is the same?
A 5s lipo packs would work with the mamber monster right?
Also one more thing,i have foud lipo pakcs that says 4s1p and some just say 4s,whats the difference?

< Message edited by naynay12 -- 12/26/2008 4:21 AM >

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RE: Savage X SS Brushless Conversion Build-Discussion - 12/25/2008 6:38 AM   
Metallover



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Status: offline 		got to hobby city .com and see what they have there. Much better then fleabay.

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