Sav XL conversion options..6 or 8S?

[BL_RV0]

8s with a medusa 80mm 1100kv gets my vote.

[e-mike]

ive tryed the 1600kv 80mm medusa in my e-revo geared 40mph and this motor overheat after 10 minutes(188f) my vote goes for the neu 1521 and 8s

[Finnster]

Originally Posted by e-mike

ive tryed the 1600kv 80mm medusa in my e-revo geared 40mph and this motor overheat after 10 minutes(188f) my vote goes for the neu 1521 and 8s

No offense, but I consider your experience an "outlier." You've destroyed more stuff than I have in all the time I've done RC lol. IDK what you Canadian guys are doing up there, but you guys are sure hard on electronics.

[lincpimp]

Give the 1515 a try, sounds like it will be easy to mount. Where do you plan to put the lipos?

[e-mike]

Originally Posted by Finnster

No offense, but I consider your experience an "outlier." You've destroyed more stuff than I have in all the time I've done RC lol. IDK what you Canadian guys are doing up there, but you guys are sure hard on electronics.

your right i destroyed many motor in past 12 month(12 in totals)...so im not to hard on my stuff....i take really care of my truck and electronic part...(cleaning,changing the part after 2 week of use and always check the temp for not overtemp)and me too i dont really understand why im not lucky with medusa motor(we are 3 here that we have issue with this brand) my friend here have the 2200kv in is lst (5 cell lipo)and he had overheat problem after 5 minutes(single speed geared for 40mph)why...we dont know.....so this is why now my vote already goeas for neu....or castle neu nothing else

[MetalMan]

Originally Posted by BL_RV0

8s with a medusa 80mm 1100kv gets my vote.

The exact setup my Savage has been running

That's gonna be one HEAVY truck! Mine Savage 25 with FLM extended low CG chassis and with a center diff weighs a bit under 12.5lbs.

Might you consider a center diff conversion similar to other center diff Savages out there (like mine)? Could save you over half a pound and improve performance, as well as eliminate that weak spur/pinion link the stock truck uses.

[Finnster]

Originally Posted by MetalMan

The exact setup my Savage has been running

That's gonna be one HEAVY truck! Mine Savage 25 with FLM extended low CG chassis and with a center diff weighs a bit under 12.5lbs.

Might you consider a center diff conversion similar to other center diff Savages out there (like mine)? Could save you over half a pound and improve performance, as well as eliminate that weak spur/pinion link the stock truck uses.

Heavy is ok as I want a big bruiser of a truck, and I'm not the jumping buildings type. Nor looking to set landspeed records.
But yes, I really really want a CD. I had been working on a mount end of last year, but its a pain and expensive to do. Got halfway thru it. I wanted it to mount in at least one set of tranny holes and have motor forward. Later decided just to mount on a skid plate like a traditional diff.
Lately I saw the (G?) maxx CD mount that mike made. I would really like something like that w. his slipdiff. I've got time to put this together, so I'll wait on those. the tekno mount is a simple mount for now and to see how it performs. If need be I'll step upto the 80mm 1100kv if needed.

What is the amp draw on that thing btw?

[mothman]

Originally Posted by Finnster

Heavy is ok as I want a big bruiser of a truck, and I'm not the jumping buildings type. Nor looking to set landspeed records.
But yes, I really really want a CD. I had been working on a mount end of last year, but its a pain and expensive to do. Got halfway thru it. I wanted it to mount in at least one set of tranny holes and have motor forward. Later decided just to mount on a skid plate like a traditional diff.
Lately I saw the (G?) maxx CD mount that mike made. I would really like something like that w. his slipdiff. I've got time to put this together, so I'll wait on those. the tekno mount is a simple mount for now and to see how it performs. If need be I'll step upto the 80mm 1100kv if needed.

What is the amp draw on that thing btw?

That is one sweet mount. But I prefer the motor to be at the center. Anyway, I believe that number of people might be interested in the mount and maybe you can start a thread about this mount. And when you have enough people, I bet the price must be much lower. You can ask Mike to machine this.

[Finnster]

Originally Posted by mothman

That is one sweet mount. But I prefer the motor to be at the center. Anyway, I believe that number of people might be interested in the mount and maybe you can start a thread about this mount. And when you have enough people, I bet the price must be much lower. You can ask Mike to machine this.

Oh thanks, its still in pretty rough stages still. I made a number of diff designs, but only the one was much advanced.
CAD is freaking hard lol. After playing with it I can really see just how great Mike's work is.

IDK if I would actually had emachine do the work, I was just using the proggy to play w/ over the Xmas break. It works well for simple things, but I was having a hard time doing others, like putting bolt holes on the side. The only way to do it economically would be have a large # of pieces made. 1 or 10 is not much of a price diff.

I would def want to prototype something 1st, I highly doubt it would be right on the 1st try, and I don't want to make some POS like the Kershaw DD kit.
I had thought of giving up on it as the Kershaw kit was supposed to come out soon and the Flux just got announced when I was doing it. I figured it would be a mostly moot point then, but seeing the weaknesses in both the designs, there is def some room in there for a good mount.

I did angle the motor on purpose as the width between the chassis is fairly narrow (74mm) and there is not enough room to fit a motor like a Neu and the spur gear if they lay flat, plus it puts the driveshaft at a hard angle and the spur have would to end up sticking out the side. I calced an angle that would lay the most flat and off to one side, but be flexible enough for a variety of gearing options. What its rly designed to do is have the motor going fwd, leaving back open for batts, and space on the side for the str servo. God knows just how it all would end up fitting together w/o some prototyping 1st. Unless you've got access to cheap machining, its an expensive process

[mothman]

Originally Posted by Finnster

I did angle the motor on purpose as the width between the chassis is fairly narrow (74mm) and there is not enough room to fit a motor like a Neu and the spur gear if they lay flat, plus it puts the driveshaft at a hard angle and the spur have would to end up sticking out the side. I calced an angle that would lay the most flat and off to one side, but be flexible enough for a variety of gearing options. What its rly designed to do is have the motor going fwd, leaving back open for batts, and space on the side for the str servo. God knows just how it all would end up fitting together w/o some prototyping 1st. Unless you've got access to cheap machining, its an expensive process

Yeah it is too narrow to fit the motor if the mount lay flat on the side of CD. Plus, the drive shaft will have to be positioned at a certain angle which will cause inefficiency and stress to the drive train. What I meant by motor at the center was the motor is positioned right on top of the center diff.

Really hope that Mike can start working on that CD mount for the emaxx. With this mount, the CD can be easily fitted on the Savage. But even then, my guess the mount would still cost around $60-$70.

[mothman]

Originally Posted by Finnster

I did angle the motor on purpose as the width between the chassis is fairly narrow (74mm) and there is not enough room to fit a motor like a Neu and the spur gear if they lay flat, plus it puts the driveshaft at a hard angle and the spur have would to end up sticking out the side. I calced an angle that would lay the most flat and off to one side, but be flexible enough for a variety of gearing options. What its rly designed to do is have the motor going fwd, leaving back open for batts, and space on the side for the str servo. God knows just how it all would end up fitting together w/o some prototyping 1st. Unless you've got access to cheap machining, its an expensive process

Yeah it is too narrow to fit the motor if the mount lay flat on the side of CD. Plus, the drive shaft will have to be positioned at a certain angle which will cause inefficiency and stress to the drive train. What I meant by motor at the center was the motor is positioned right on top of the center diff.

Really hope that Mike can start working on that CD mount for the emaxx. With this mount, the CD can be easily fitted on the Savage. But even then, my guess the mount would still cost around $60-$70.