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Thread: Build Thread x3

  1. #81
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    Sweet project! I expect your kids have no idea at this point how lucky they are but they will eventually; great job dad!

    I have a couple suggestions based on my kid and I running our Rusty since '13; he's 12 now and there are a *lot* of broken parts in our history.

    1. I like plastic bearing carriers in the front combined with metal caster blocks. RPM are good; never have broken one of those.

    2. I *vastly* prefer the shock-absorbing ability of the RPM shock towers; these cars take a pounding and the RPM flexes without permanently bending (or breaking!). If/when your alu towers fail consider these.

    3. You said you're getting 3s batteries for the bashers (which are for the kids). Only in the last month have we tried our Rusty on 3s and now stuff is breaking every 5 minutes. Plus, the car will go well over 30mph on 2s. Use care here- on 3s it's a lot of car for the inexperienced (or tbh even on 2s).

    3a: $5 says that the stock driveshafts will be short lived with inexperienced drivers and 3s. I use and love the Tekno Slash driveshafts, but I think they required the use of Slash rear control arms. They're bomber though- bigger bearings, hardened outdrives, and near-bombproof Tekno plastic hubs.

    3b: Likely this is obvious but given the above make sure the kids' setups have the throttle end points dialed down. If available I'd also use the Expy and Punch adjustments to reduce the shock loading on the drivetrain until they learn some throttle control. Oh, and don't forget to adjust reverse too! Recently I allowed a neighborhood little to run our Rusty and while I turned down the forward throttle EPA I forgot about reverse and well... it got a little dramatic for a second

    4. At one point as a field-expedient fix I installed the RPM Slash front bumper (the RPM Rusty bumper broke and I had the Slash unit on hand). It's massively strong and quite flexible- some say it looks dorky but the protection is great for high-speed collisions by the inexperienced in no small part because it sticks out pretty far.

    5. Great job on sourcing the SDRC hinge pins- their front bulkhead is flawless; we have a couple of them.

    That's my $0.02 worth; I hope your projects turn out great and the kids are thrilled once they get to drive. Enjoy your cool cars!

  2. #82
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    Quote Originally Posted by feralcomprehension View Post
    Sweet project! I expect your kids have no idea at this point how lucky they are but they will eventually; great job dad!
    Thank you very much for taking the time to share so much of your experience with me. That's just the kind of feedback I've been looking for.

    I had to loop up expy and punch. Hadn't heard of that before but I'll be sure to dial down the performance at first for my kids' trucks. I want them on 3S so that they'll interchange with my 6S setup. I also plan to have my daughter build a drone using a 3S battery.

    I'll keep what you have written here in mind and refer back to it when we start running these trucks.

    My son got his wheels for his monster truck. I was surprised to find that these tires are thinner and just a bit shorter in diameter than the tires for the orange truck. Still, my son is happy with how it turned out and that's all that matters.



    Earlier today I had my daughter install the SDRC drive shafts for the black chassis. She also fixed up the front end while she was at it.



    I plan on using ARRMA Dboots Hoons. That's why I'm using the hub adapters. I haven't but the tires yet. Saving that for next paycheck.

    Coming in the mail is a pair of tools from RPM to set camber and caster.

  3. #83
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    dBoots Hoons

    Over the weekend I had my daughter install the latest arrivals.



    Money is getting a little tight with us needing a new washing machine and the holidays approaching. I'll taper back my buys a little until after the new year.

    I've got the RPM toe-in and camber tools but the instructions say to use them with the vehicle weighted down with batteries and everything else that goes on the car when it's running. So I'll hold off on doing any alignment in the near term.

    I need to adjust the shocks on the black chassis so that it rides lower. I should have done that when I originally filled the shocks with oil but I had forgotten at the time. I know I need to use the tubing trick so I'll have to pour out all the brand new oil that is in the shocks now.

    Had anyone ever just cut the shaft of the shock shorter and cut new threads to screw the piston on? That seems like a better approach to me because it would keep the piston in the middle of the shock body rather than near the top if I use the tubing trick.

  4. #84
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    A couple motors

    I ordered a couple motors on Amazon. Nothing hot, just well reviewed and mostly color-matched. My boys installed them last night.



    We will put color-matched loom over the black wires.

    If anyone has any recommendations for switching to lower-riding shocks on my speed build, I'm all ears. I know about using fuel tubing on the shock shaft but I want my chassis so low there would be pretty much no rebound in my current shocks - they would be completely compressed. I have also heard of moving the front shocks to the rear and putting car shocks up front. If anyone knows of a particular car shock that would be a pretty easy swap into Rustler to make it ride lower I'd like to hear it.
    Last edited by Tiogaplanet; 11-21-2020 at 06:50 AM. Reason: I'm just now learning about using the E-Revo shocks to lower a Rustler.

  5. #85
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    New Year Update

    No pictures yet but I am slowly gaining traction to resume this project. My black speed build is stuck on "pause." I bought two cheap Goolrc ESCs for the blue and orange trucks for my boys. They are starter ESCs that I plan to replace once I know more or once my kids kill them, whichever comes first. I also got them a pair of Flysky radios and receivers. I scaled back my battery aspirations and bought them a pair of Zeee 2S lipos. I bought the HTRC C150B charger along with a parallel charging board so I can charge both batteries at once.

    We have almost everything we need to let the boys take the trucks on their maiden run. A few things are holding us up. We need to do a wheel alignment on both trucks and program both ESCs.

    The big sticking point is the springs for the blue truck. The truck is heavy with all the aluminum I've used and the rear springs are way too soft even with the preload turned to max. The truck has a saggy rear end. I hate it when that happens. So I swapped the front and rear springs which seemed to help hold the rear up a little better but I had to cut a lot from the springs that went to the front and it still feels too stiff up front. At this point I'm willing to try new springs altogether.

    I'm using Atomik's Ultra shocks on the blue build and the springs are 16mm in diameter. If anyone can recommend new springs for all four corners I'd appreciate it.

  6. #86
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    Casualty Report

    I have fallen behind in reporting our status! We finally got the boys' trucks running a couple weeks ago. I took a couple pictures but only one came out decently.





    The ESC in the blue truck died during the first outing. I returned it, got credit for it and bought a more expensive one. It's still coming in the mail.

    The orange truck had better luck but after a mild wetting the ESC started acting funny. I dried it out and did my own waterproofing with hot glue. It looks ugly, especially since the leaves and roughage are now sticking to the glue. I'm going to replace it too but it's working for now.

    Since the orange truck is still working, we've all been taking turns with it and it is pretty beat up by now. Someone bent a steering arm which we discovered during post-run maintenance. I also saw that some of the 1985 washers appear crimped so I replaced those too.



    I cannibalized the steering turnbuckle from my black chassis and ordered the red-anodized steering turnbuckle set (3139X) for myself. I also cannibalized the red shocks and put them on the blue truck. I've given up on the blue Atomik shocks we originally purchased. As I posted in my last post, the springs were too soft and I couldn't find stiffer springs to fit Atomik shocks.

    My black chassis build is now way behind my boys' trucks. I've given up my shocks and steering turnbuckle to each of the other trucks to work out their initial bugs. I'm not sure I'll get it running before I move out of Jacksonville this summer. However, I do have another set of shocks, the steering turnbuckles, HR 34T spur gear and a 34T pinion all coming in the mail.

  7. #87
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    About the red build

    It's been a long time since I updated. I thought I would take a minute to talk about the one I'm building for myself.

    I've got a Surplus Hobby 4068/2650KV with a 29T pinion and 34T spur. I'm using LipoLock's bumper and top chassis weight. I painted the body this past weekend and it looks pretty good IMO. It's not a real Traxxas body and doesn't fit quite right. I'll wear this one out and try again with a real Traxxas body.



    The body is red, backed with white, backed with black. I used a clear, flat finish on the fastback. Yes, my kid took a Sharpie to one of the tires.

    I still need an ESC and receiver but that will have to wait. In fact, all three of these will wait until at least August for updates and refinements. I'm wrapping things up in Jacksonville and am moving to Hawaii by July.

    The orange build has a HobbyWing ESC. I finally gave up on the cheap stuff. The GoolRC ESC in my other boy's truck is still working fine so I will leave well enough alone. I gave up on the Integy bumpers and will eventually replace them with RPM bumpers.

  8. #88
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    Looking good.


    Guessing moving to Oahu?
    Spent a lot of time on big island. And have a acre there I inherited from my dad.

    Definitely different. I have enjoyed my time on the island. Expect getting rc parts to take much longer though. Everything really... Food way more expensive...

    Sent from my Pixel 3 XL using Tapatalk

  9. #89
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    Quote Originally Posted by Tiogaplanet View Post
    It's been a long time since I updated. I thought I would take a minute to talk about the one I'm building for myself.

    I've got a Surplus Hobby 4068/2650KV with a 29T pinion and 34T spur. I'm using LipoLock's bumper and top chassis weight. I painted the body this past weekend and it looks pretty good IMO. It's not a real Traxxas body and doesn't fit quite right. I'll wear this one out and try again with a real Traxxas body.



    The body is red, backed with white, backed with black. I used a clear, flat finish on the fastback. Yes, my kid took a Sharpie to one of the tires.

    I still need an ESC and receiver but that will have to wait. In fact, all three of these will wait until at least August for updates and refinements. I'm wrapping things up in Jacksonville and am moving to Hawaii by July.

    The orange build has a HobbyWing ESC. I finally gave up on the cheap stuff. The GoolRC ESC in my other boy's truck is still working fine so I will leave well enough alone. I gave up on the Integy bumpers and will eventually replace them with RPM bumpers.
    How did you get that pinion gear to fit so well? I had to cut off close to have of my gear box to make a 34t mod1 pinion fit. And just **** does that look good

    Sent from my SM-N975U using Tapatalk
    The road to a 100mph 2wd slash

  10. #90
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    Quote Originally Posted by Hualiama View Post
    How did you get that pinion gear to fit so well? I had to cut off close to have of my gear box to make a 34t mod1 pinion fit. And just **** does that look good
    I started with an Integy gear box. There is no wall around the motor so it was easy. The only "machining" I had to do was to dremel out the screw channel to make the pinion fit against the spur. I removed as little material as possible to fit the pinion and adjust the mesh with the spur gear. It's not professional quality work but I can live with it.

  11. #91
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    Quote Originally Posted by Tiogaplanet View Post
    I started with an Integy gear box. There is no wall around the motor so it was easy. The only "machining" I had to do was to dremel out the screw channel to make the pinion fit against the spur. I removed as little material as possible to fit the pinion and adjust the mesh with the spur gear. It's not professional quality work but I can live with it.
    Ahh. I see thank you! I might look into getting one of these. As it is I have on screw that isn't even Ina screw hole just clamped on the side of plastic haha

    Sent from my SM-N975U using Tapatalk
    The road to a 100mph 2wd slash

  12. #92
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    Quote Originally Posted by Acidic01 View Post
    Looking good.
    Thank you!

    Quote Originally Posted by Acidic01 View Post
    Guessing moving to Oahu?
    Yup. For no more than two years.

    Quote Originally Posted by Acidic01 View Post
    Spent a lot of time on big island. And have a acre there I inherited from my dad.
    Nice! We don't want to live there permanently but we can see the attraction having visited a few times before.

    Quote Originally Posted by Acidic01 View Post
    Definitely different. I have enjoyed my time on the island. Expect getting rc parts to take much longer though. Everything really... Food way more expensive...
    I'm going to start keeping spare parts to mitigate the long shipping times. Thanks for the advice.

  13. #93
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    Quote Originally Posted by Tiogaplanet View Post
    Thank you!



    Yup. For no more than two years.



    Nice! We don't want to live there permanently but we can see the attraction having visited a few times before.



    I'm going to start keeping spare parts to mitigate the long shipping times. Thanks for the advice.
    Yea good idea.

    Sent from my SM-N975U using Tapatalk
    The road to a 100mph 2wd slash

  14. #94
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    Quote Originally Posted by Tiogaplanet View Post
    Thank you!



    Yup. For no more than two years.



    Nice! We don't want to live there permanently but we can see the attraction having visited a few times before.



    I'm going to start keeping spare parts to mitigate the long shipping times. Thanks for the advice.
    I didn't look to hard at google maps but perhaps is a lhs on the island. May be more just toy store stuff. Worth a search and see what may be available local. Be the kind to call or stop in and see if they got anything.

    Wish you and your family a good move and getting settled in.



    Sent from my Pixel 3 XL using Tapatalk

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