A bit of info please (savage conversion) - RC-Monster Forums

Nixpus · 07.05.2009, 03:47 PM

Found a set of XL wheels with 17mm hex and all for 70$ delivered to my doorstep. Hope those guys will be a tad more durable than the old ones.

Nixpus · 07.09.2009, 03:42 AM

Battery trays made out of a stiff plastic box wasn't that sexy... but they got it up and running.

Time for battery tray v2. Found a stick of U shaped aluminium. Made a cut out in each end and bend them. tadaa... battery tray!

Added a strip of velcro to the bottom of the tray and the bat. will have 2 velcro straps around each tray. The straps are from lab top PSU's... they are used in order to manage the cable length.

Made a plastic insert in each tray. This way I can use standard hex screws. The "head" of the screws is sitting slightly lower than the edge of the plastic insert. Battery safe from harm... at least they wont get damaged by the screws ;)

Placed them at the front of the sav... should be ok balanced once motor + ESC is installed in the back.

Nixpus · 07.09.2009, 04:06 AM

Motor mount v2!

Who said you cant place a 44 can under the spur gear in a standard savage?

Found a sheet of 2mm stainless steel. Bend it into a U shape that fit inside the TVPs. Did a few test bends in order to get the right fit. Made a slot in each side. The gear mesh will be adjusted by moving the mount up and down.

Metal bend into shape:

Cut out in order to make maximum room for drive & spur axle:

Here you can see the slot. Placed a washer on each side of the mount - it slides quite neatly. I dont have a ton of adjustability... but I can gear this guy from 40-55ish MPH with a 47t spur (not counting ballooning in).

Photo taken from the top.

I had to grind away a little of the center gear box - The area where the top screw from the disc brakes were inserted. Other than that the opperation was pretty painless... the hardest part was drilling in the titanium TVPS. I increased the screw size at the mount from M3 to M4.

Nixpus · 07.09.2009, 04:09 AM

Motor mount & battery trays on the chassis

Will shorten the wireing as much as possible once I figure out where to put the ESC.

Nixpus · 07.15.2009, 05:26 AM

Turns out that my rear diff was ok.

One of the rear dogbones had a tendency to get stuck in the axle cup (in lack of better words). A bit of grease added and now it runs like a dream :)

Im wondering if there is a good low budget steering servo out there? The one that came with my chassis can hardly move the wheels when the truck isn't moving... and its slow.

BL_RV0 · 07.15.2009, 12:34 PM

Conversion is starting to take shape. Have you thought about mounting the ESC above the tranny? Just make a plate and you're done. As far as a cheap steering servo goes, the hitec HS-5645MG is great. Good specs and about $50 USD.

Nixpus · 07.16.2009, 03:42 AM

I have... but then I would have to increase the length of the wires between ESC & motor. But I guess your right

I had started to bend an alu mount for it. Was thinking to put it on top of the motor. But it will sit less protected up there and it will be annoying to fiddle with the motor if it sits up there.

If it becomes too nose heavy I can move the battery trays a bit backwards.

Epoxying the hex nuts didn't work btw... so now Im running with a pair of XL tyre/rims with the 17mm hex. Looks good so far. And bigger wheels = I can run in taller grass

Will see if I can get ½ an hour to mount the ESC properly and take a picture or two of the current state of the truck.

Cheers!