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Losi Night Crawler/PTI Build
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Thread: Losi Night Crawler/PTI Build

  1. #1
    Super Moderator rik's Avatar
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    Losi Night Crawler/PTI Build

    so i left the first comp thinking..."uff the pti, i need to build a more comp worthy crawler". Losiredcatcrawler pointed out that the pti and the NC pretty much have the same setup as far as links and drive shafts go. on wednesday i bought a NC chassis/tranny/link setup from Tin Soldier, and got to work right away. here's what i've done so far.

    This is what the PTI looked like before doing anything, as you can see the the motor is way up there. not the hot setup. so the CG is way too high. also everything on it is aluminum. again raising the CG.



    first thing i did was rip the front axle off the PTI and mounted it on the NC links, giving me this...



    now i knew that the PTI axles would work, i now needed drive shafts. I decided to go with stampede drive shafts. (my poor stampede is in pieces) i took the drive shafts apart and they slipped right onto the output from the tranny. i used two set screw on each yoke to hold them on. i got away from needing new axle input shafts because of the design of the pti input shafts. (no yoke needed there) they are pretty much a direct fit for the stampede shafts. (OGmicromonster from rccrawler.com) below is a pic of the lower links mounted and the drive shafts going to the axle.



    the biggest problem i faced so far was the mounting of the upper links. there was no where to mount them. so today i machined upper link mounts out of steel. i made 6 of them. (only need four, but ya just never know) these are the 2 extra i have. the one on the right shows how the mounts are secured to the axle. the one on the left is a side view showing how the link mounts to it. i used m3x.5 screws to hold it all together.



    here is what the upper links look like mounted to the axle. it appears that the links will hit the mounts but they do not. (boat load of trigonometry figuring that one out.) you can see where the rear steering is "locked out" on the right. also, when i got done machining the mounts i plated them with black oxide so they wont rust. that is why they are, well, black.



    so now all the axles are mounted and are very solid. the drive shafts are on. though, i DO need steel yokes. i just used what i had to make sure every thing works before dishing out $. shocks are mounted. i think i need slightly shorter shocks, but i cant be sure till i have it out for a few test runs. everything moves very smoothly. here is how she is sitting now. the electronics were hooked up about 15 minutes ago. it runs **** good. i think it looks a hell of a lot better too. and the CG is about 2 inches lower.



    on monday i am gonna spin new lower links. i am not too fond of the delrin ones. also, new lower links will give me that tiny bit of clearance i need for the stampede drive shafts. all in all it runs 10x better than the pti. i am very happy with it. all of this is being done so i can get DIG. though, i gotta get an LCC tranny first. i also plan on getting new axles. this will be a work in progress, so i'll post as i mod.


    i'd just like to thank Losiredcatcrawler for taking the time at the first comp to look at the PTi and point me in the right direction, and Tin Soldier for selling me the Chassis/Tranny/Link setup. Very Much Appreciated.

  2. #2
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    Re: Losi Night Crawler/PTI Build

    looks good so far, nice work
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  3. #3
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    Re: Losi Night Crawler/PTI Build

    Dude you are amazing. Just making parts. I love it!
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  4. #4
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    Re: Losi Night Crawler/PTI Build

    hey man your very welcome always looking to help anyone out that thing looks way way better looks like a real rig now just get that dig trans i bet youl love it let me know how it works looks great to good work
    Formerly known as losiredcatcrawler


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  5. #5
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    Re: Losi Night Crawler/PTI Build

    Very nice work... I like... can't wait to see how it preforms on the 23rd.
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  6. #6
    Super Moderator rik's Avatar
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    Re: Losi Night Crawler/PTI Build

    thanks guys. due to the gear ratio in the tranny (1:1) i had to install my gear reduction unit in. it's way to bulky. though, thats just to run it now. i plan on installing the RC4WD R2D transmission in so i can get dig. here's a link on it if anyone's interested. i like the sealed disconnect.
    http://rc4wdstore.com/2/product_info...a44bd1e3dcfb97

    i just gotta rip the rig apart and get some measurementsto see if i have room for it. if i do i will make a new skid plate/tranny mount out of aluminum. just gotta get the bread for all this first...

  7. #7
    Administrator brazwewn's Avatar
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    Re: Losi Night Crawler/PTI Build

    I came really close to buying this, but didn't want to have to change everything on my rig. To fit an Axial, a lot of stuff needed to be changed around. It looks really solid though!

    Wes

  8. #8
    Super Moderator rik's Avatar
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    UPDATE Re: Losi Night Crawler/PTI Build

    so i got the electronics mounted good enough to take the rig on the rocks. it's a night and day difference from the old pti set up. all around it is sooooo much better!!! i did some more work on it. i spun new steering linkages today. below are the before and after pics of the steering...

    this is how the steering linkages used to look(actually this is the rear, but the front had the same links)



    these are the new links i made. they are made out of 6mm (.236") 6061-T6 aluminum. the top link is a straight link. the bottom has a 22* bend on both sides. i aimed the bottom link upwards to gain more clearance. each link is tapped for an M3x.5 screw.



    here's a pic of the electronics mounted up. esc and rx are held on by 3M double sided tape. (strong stuff too!) the battery is held on by velcro... i drilled a 3/8" hole in the battery tray to route the motor wires from the esc to the motor.the wiring still needs to be shortened to proper length, but it'll do for testing purposes.



    and finally, here's a pic with my old rockstar body mounted on it. stupid me trimmed it to 12" in length when i first got. (no comp use for this one!) **side note** this body is fxxking ugly!!!!!



    this steering set up is just temporary as i am going to move the servo up a little and rotate it, then move the bottom link to the top of the knuckle and mount the top link to the bottom one off centered a little. pretty much the same as the LCC, i think. though i cant do any of this with out aluminum knuckles. i am going to use TLT knuckles from TCS. (idea from K_B @ rccrawler.com)

    thursday night i will be picking up my rod ends from trains n' lanes, so friday i will be spinning off my new lower links. will post pics friday or saturday night...

  9. #9
    Webmaster Tin Soldier's Avatar
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    Re: Losi Night Crawler/PTI Build

    That body is ugly, but the rig is looking good. Can't wait to see it run.
    ~ Ryan
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  10. #10
    Senior Member StartGateCrasher's Avatar
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    Re: Losi Night Crawler/PTI Build

    very nice.... that's looking sweet
    <table width="100%"><tbody><tr><td valign="top">
    ~Adam
    ------------------------------
    Venom Creeper - 4VP v3
    Losi MRC - "M"VP v2
    Axial XR-10 - Rock Hawk Chassis
    Madtorque - Super Experiment

    [URL="http://www.eparccrawlers.com/forums/payments.php"][SIZE=4][B][COLOR=red]Become a supporting member today![/COLOR][/B][/SIZE][/URL]
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