Project: Savage Flux 5T

[Finnster]

Originally Posted by Bondonutz

This sound s like a very impressive set up Mr. Finn, could I burden you for some pictures or a link pleeze ? Very curious of your ESC choice .

Sure Mr Nutz ;)

Just down a bit is my 4ws thread. I didn't build the truck for super high speed, I just wanted a big, powerful ground pounding MT. I'm pretty happy with it, tho I haven't got to drive it since Thanksgiving due to life and kids getting in the way.
All I have time for now is harassing Harold and posting up in conspiracy threads.

Warmer weather approaches, so I'll have to think of the next step. I'd really like to get a slipperential in there, just so many PITAs to do so. Initially I sat and stared at it for a month figuring out how I can get a 15 series inside the XL tvps and/or make a CD mount. Eventually I said F it and just got the Kershaw mount. Not very elegant, but great for what I wanted to do (ie 4WS)

[Finnster]

BTW, here is another thread talking about mounts. Linc made his own mount for a 36mm motor and it turned out well. He mounted it very low as well. Obviously a 44+mm motor will have to be mounted higher, which will also push it out sideways to mesh, and the extra width will tickle the TVPs. You may get it within a few rch's if you match the motor just right.

[fastbaja5b]

I'm curious about these 5T kits, it seems they are marketed to get people to use existing electronics (albeit more volts) in them, last I checked neither the Savage Flux or E-Revo Brushless were known for being reliable from an electronics standpoint, the MMM speedy still does seem to like to become a flaming pile of molten plastic a little too easily. Heck even on a 50f day outside on my box stock Flux with standard tyres and gears the ESC fan seems to be on more than it is off and that was running 4s Polyquest Enerland 5100mah 30C lipos. Is this project well advised while we don't have "reliable" 1/8th ESC's about or are the Tekins more reliable than the Castles? Obviously with the MMM still having a 2-3 week wait time on repairs / replacement it's still an ongoing issue.

[thzero]

Your point? Don't do it if you don't think its worthwhile.

[Bondonutz]

Originally Posted by fastbaja5b

I'm curious about these 5T kits, it seems they are marketed to get people to use existing electronics (albeit more volts) in them, last I checked neither the Savage Flux or E-Revo Brushless were known for being reliable from an electronics standpoint, the MMM speedy still does seem to like to become a flaming pile of molten plastic a little too easily. Heck even on a 50f day outside on my box stock Flux with standard tyres and gears the ESC fan seems to be on more than it is off and that was running 4s Polyquest Enerland 5100mah 30C lipos. Is this project well advised while we don't have "reliable" 1/8th ESC's about or are the Tekins more reliable than the Castles? Obviously with the MMM still having a 2-3 week wait time on repairs / replacement it's still an ongoing issue.

I have had a few failures myself but I beleive most failures are from user errors.

[lincpimp]

Originally Posted by Bondonutz

This is where I'm at a disadvantage because I've never owned a Savy, So I'm stabbing in the dark with my ideas.

Well I pretty much agree w/the wifey. I'm just being repsectfull sir.

Sorry FDR ?? I'm a little slow sometimes.

I cannot believe everyone let the "stabbing in the dark" quote go.... Tssk, you are all slipping in my absence...

As for Finn being all knowing, well he is a legend in his own mind, that has to count for something... Right?

And FDR was a president, no idea what that has to do with tiny cars, maybe FDR was a closet fool like Harold?

Originally Posted by fastbaja5b

I'm curious about these 5T kits, it seems they are marketed to get people to use existing electronics (albeit more volts) in them, last I checked neither the Savage Flux or E-Revo Brushless were known for being reliable from an electronics standpoint, the MMM speedy still does seem to like to become a flaming pile of molten plastic a little too easily. Heck even on a 50f day outside on my box stock Flux with standard tyres and gears the ESC fan seems to be on more than it is off and that was running 4s Polyquest Enerland 5100mah 30C lipos. Is this project well advised while we don't have "reliable" 1/8th ESC's about or are the Tekins more reliable than the Castles? Obviously with the MMM still having a 2-3 week wait time on repairs / replacement it's still an ongoing issue.

Well, I have had good success with the MMM, but I chalk that up to knowing what I am doing with brushless electric. How anyone expects to have success with anything while maintaining their dumbass ways always makes me laugh.

Back to the point here. I do not think CD is a good idea, you really need the reduction offered by the trans. This beastie will be heavy, and the longer wheelbase will place more load on the motor and esc as the traction will be higher. With the 1515 motor I would think 6s lipo and gearing for 40mph would be the best bet. Using a small spur, such as the 43t and the appropriate pinion (which should be less than 20t) you may have success getting a neu motor down below and to the side of the spur (like I did in that like someone already posted).

Now I think that hpi offers a different trans gearing option that basically replicates the 2nd gear gearing that the nitro 2sp uses. The original flux was basically locked in 1st gear, and that required the larger pinions and smaller spur to get the FDR (paying attention bondopants?) -final drive ratio- where it needs to be. Good idea on some levels, as the closer the pinion gets to the spur in size the less wear you get on the pinion.

My plan with the 5th scale savage (I have hpi 5t tvps here...) will be to use the GH al bulks, with std buggy ratio gears, and the std flux trans. I may have to remake the tvps, or maybe just 1 as I would like to use the flux motor mount, as it fits the smooth can 15 series neus I have. Either a 1521 or a 1527, I have both.

Still wondering if the 1521 2y on 10s lipo will do... I would really like to go up to 12s, but I only have a 10s capable car esc, and would prefer not to go with mech brakes. I do have a 1717 motor, and a good 6s lipo but I again wonder if the MMM will keep up.

Using buggy ratio diffs, flux tranny and 43/20 gearing the 1521 2y on 12s will give me right at 40mph with 6" tall tires. I may run taller tires, not sure yet. My plan was to use moab xl tires, sectioned to fit std mt rims. Which gives a little over 6".

Or I could go with the 1527 2y, leave a 2sp trans in there and run 10s lipo. Mech brakes would be a must, and I would have to can reverse (or really get freaky with the m11 programming...). No idea what to do, a good CC 12s capable car esc with big numbers would be handy, although I do not see a 1527 2y pulling much more than 60 amps. 60amps at 12s is 3.5hp...

[thzero]

Interesting information. Only one note, the standard Savage diffs are the same ratio as standard buggy diffs. :) If you were able to swap out and use truggy diffs then you could go with the center diff but yeah without going to lower ratio diffs, I don't think you can go with a center diff.

Oh and Moabs are more like 6.9" diameter. And the XL version are 7.3" (6.9" according to tower, but Brian's speed calc has them at 7.3"). Both which are bigger than the 6.88 (by a hair) badlands for the Baja interestingly enough. Pro-Line Trenchers for the 5T are 7.55" according to Tower.

[thzero]

Posted some pictures of my battery tray holder mount.

[rtoc]

I don't see any pictures of the battery tray holder??

[thzero]

Posted in the gallery that was mentioned in the original post.

[thzero]

A wooden Savage?!



Well maybe not. It is a wooden mockup of a 22.4" front mounted tranny bolted up. Was almost perfect, however tranny mount needs to go back by about 1mm. Now just to find someone who has better metal skills than I do to do it. :)

[thzero]

Well, I got the 5T conversion finished (for now). Updated the album (http://picasaweb.google.com/thzerodo...ux5BConversion) but here is a shot of the "finished" project.



TCS Crawlers 5T TVP Conversion.
ProLine Badlands on Maximizers (for now).
2200kV Tork + Mamba Monster ESC.
5S 5800 Zippy Flightmax batteries.
Custom internal battery mount.
Ofna buggy wing attached to the rear body mount.

Weighs in at 15.8lbs fully loaded. Not too bad considering I think in nitro format it was around 12 or 13lbs.

It ended up being more of a 4WD buggy! And I've decided that going to the 7.5" diameter 5T wheels are probably more than the Savage 8th scale driveline can handle, I'll probably go with the buggy tires which are no bigger than the Big Joes I've run on the nitro savage. Not to mention it saves having to buy a $150 body!

Looking towards the buggy tires, I'm probably going to drop to a Castle-Neu 1600kV. This will of course mean grinding out the motor mounts and will means some material removal on the TVPs to let it fit.

[V0RT3X]

This would look cool with some LST shocks.



I will also put a 1520 in my XL Flux. Any issues running the Big Joes?

[thzero]

Nice hadn't seen that may need to go pick up a copy. :)

And no, if I am going to change out, it'll be to Baja shocks.

Originally Posted by V0RT3X

This would look cool with some LST shocks.



I will also put a 1520 in my XL Flux. Any issues running the Big Joes?

[Bondonutz]

Thye Baja shocks are much longer than the Flux shots.