HV Savage

[MetalMan]

Well that sucks.

I just uninstalled the old uprights and carriers in the rear, along with the rear toe links. All together those parts weighed in at 4.6oz. The Integy replacements (single hub carrier like most 1/8 use) came out to 2.3oz... In other words HPI was stupid when they decided to allow infinitely adjustable toe in the rear.

Then I got around to weighing the truck. With old-ass Crimefighter MTs on HPI Warlock rims the truck came out to about 12.5lbs with everything except the body. Not too bad for an extended Savage with RX pack, brake setup that still needs to be removed, and with lots of material that can be shaved off!

[MetalMan]

Prior to the bash I was able to remove the remainder of the mechanical brake components (linkages, pads, rotors) and that shaved a solid 2oz. off the truck. Next up was that nasty RX pack and the addition of the Hobby City HV UBEC, which I de-switched and added solder between the switch pads on the circuit board.

For those who showed up to the bash fully expecting to see this truck run, I apologize. Turns out the UBEC's switch turns it ON when the switch is in the open circuit position, hence why it wasn't sending any power to the RX.

Soon I shall throw this beast up on the scale. It wouldn't surprise me to see it just a couple ounces shy of breaking 12lbs.

[lincpimp]

So how do you like the integy rear hubs? I have a pair coming for the flm savvy... Still debating whether to lock it in second, or wait and get the flux parts to convert it to single speed... I have to wait for the 1521 smooth can to show up, and the 10s lipos... The tranny forward chassis needs a certain amount of room to fit the batts, and my primary gearing has to work with that space too... Crap, waiting on parts again

[MetalMan]

So far the Integy rear hubs have been working just fine. Course I don't examine them closely but they are holding up well and have not given me anything to complain about (other than not aligning the bearings all that close together).

You know, one of the easiest ways to take a lot of stress off the Savage drivetrain is to go center diff (this would totally solve your tranny issue ). This truck is still using Savage 25 ring and pinion gears, just with the hardened bevel gears and aluminum cup from the Savage X. It's using the Savage 25 stock bulks too!

[MetalMan]

Whoever thinks the Savage X diffs (in Savage 25 bulks) are weak needs think again! A little bit ago I decided to test out the E-Logger V3 I received for Christmas in my most power-hungry truck.
From the pics you guys know this truck uses two batteries in series (2x 4s 3700mah 20C Rhino packs), and the input wires to the ESC hook directly to the Deans plugs. Thus I could only record data from one battery, but the current (amps) measurement is accurate because all components connected electrically in series will pass the same current.
The batteries had only a bit more than three-quarters of their charge left, because I was too lazy to charge them. The resting voltage when I first plugged the one battery in was 16.54v.

Here are the images (I left them huge for better clarity of data):
http://img.photobucket.com/albums/v1...age_graph1.jpg
http://img.photobucket.com/albums/v1...age_graph2.jpg
http://img.photobucket.com/albums/v1...age_graph3.jpg

The first image shows some random stuff I thought would be interesting to see.

Second, you can see the REAL power this truck is capable of. One peak gave this result:
13.73v (3.43v/cell average)
121.55amps
1,668watts
Remember, I am only recording for one battery. Assuming the other battery performed similarly (no reason why it wouldn't), here is the total input to the ESC:
27.46v
121.55amps
3336watts
Nearly 4.5 FRICKEN HORSEPOWER! All coming from a truck with a center diff too... That power level certainly isn't a fluke because it hits that peak over and over again.
Also, assuming that the E-Logger is properly recording voltage when the current spikes like that, these Rhino 3700mah cells are holding 3.43v (average) at 120amps, which is 32C. Very impressive for such cheap batteries!

The third picture indicates where I was accelerating hard, and then SLAMMING on the brakes. It is very scary to see such a heavy truck stop so quickly. Anyways, the red circles I believe are indicative of regenerative braking.

[lincpimp]

Originally Posted by MetalMan

So far the Integy rear hubs have been working just fine. Course I don't examine them closely but they are holding up well and have not given me anything to complain about (other than not aligning the bearings all that close together).

You know, one of the easiest ways to take a lot of stress off the Savage drivetrain is to go center diff (this would totally solve your tranny issue ). This truck is still using Savage 25 ring and pinion gears, just with the hardened bevel gears and aluminum cup from the Savage X. It's using the Savage 25 stock bulks too!

I just picked up a set of the integy rear hubs, hopefully they work well... Must be stronger than the rear tie rod (that I usually break on my maxx and lst1)...

[Joey]

Did you make the center diff mount? Im trying to figure out how to mount my CD between savage x plates....

Originally Posted by lincpimp

I just picked up a set of the integy rear hubs, hopefully they work well... Must be stronger than the rear tie rod (that I usually break on my maxx and lst1)...

...linc they work GREAT!! Just getting the bearing into them was a hassle for me...Beware the unit that has the integy logo UOSIDE DOWN!!! Thats the killer lol...

[MetalMan]

Originally Posted by Joey

Did you make the center diff mount? Im trying to figure out how to mount my CD between savage x plates....

Yes, I did make the center diff mount. More work was involved with making it than is required. You could simply make a lower skidplate and bolt the center diff unit from a 1/8 to the skidplate, along with a motor mount.