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Ernie |
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Re: new2rocks Guide to the TRX-4 Updated the spur/pinion mesh section based on further testing and monitoring forums/FB. The stock motor position (hole "C") leaves mesh too tight with the stock pinion (11T). Placing the motor in hole "D" with the stock pinion provides much better mesh. Based on bench testing other pinion sizes, the manual's recommended motor positions for other spur/pinion combos also appears to be off (too tight) by one hole, so recommendation is to use one hole further out that recommendation in the manual. Also, pinion alignment with the spur gear appears to be off on many of the first production examples. Recommendation is to check alignment and adjust as needed before running the truck. "thumbsup" |
Re: new2rocks Guide to the TRX-4 So is it true some people were getting transmissions with plastic gears in them? I went through mine today and its all metal except the shifting mechanism I hope they release an aluminum one. |
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Re: new2rocks Guide to the TRX-4 I tried the D position and found it too loose. C with stock pinion is not wearing the spur abnormally and shows just a teeny tiny bit of play on both rigs I've looked at. |
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new2rocks Guide to the TRX-4 Quote:
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Thanks for chiming in...that's helpful to know. Sounds like either their tolerances may be a bit loose or there was a part update that addressed mesh once production started. I know mine were definitely too tight in the C position, and I tried several other pinion sizes with the manual's recommended motor position and found the same issue. Either way, I've updated the guide to account for some people (like me) having mesh too tight and others having it be just right in the stock C position. "thumbsup" |
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I changed out my diff covers to the red ones and wanted to put some grease in there. There was barely any in there... (i bought mine from a local hobby shop first week of june...) I had to remove the lower shocks/links screw and pull the drive shafts so i could twist it enough to use a driver... kind of a silly thing, but surely noted. All in all, its better then a bomber to work on... hahahaha Also, slot C motor mount was too tight on mine also... slot D was the fix for mine... once again, i got one of the first ones shipped. |
Re: new2rocks Guide to the TRX-4 I just posted another installment of "Shut Up and Drive!" featuring a mostly stock TRX-4 (added the BowHouse RC Low CoG Battery Tray and a Holmes Hobbies SHV500 steering servo) going head-to-head with a mostly stock kit-built SCX10 II (stock except for BowHouse RC tranny flip kit and GCM Deep Dish wheels) through some challenging lines that test overall balance. Despite all of the differences between the trucks, it's amazing how similarly they perform. Even the powertrains (stock TRX-4 550-can 21-turn motor and XL-5 ESC on 3S vs. Holmes Hobbies Puller Pro Stubby 3300 with Trailmaster BLE ESC on 3S) end up producing similar low-end grunt and top speed, though the TRX-4 needs a 2-speed tranny to do it. Go figure, lol... Here's the video: <iframe width="560" height="315" src="https://www.youtube.com/embed/FkBZuCqT-i0" frameborder="0" allowfullscreen></iframe> https://youtu.be/FkBZuCqT-i0 |
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Re: new2rocks Guide to the TRX-4 Nice video there! It looks like they did fairly well. Was there some gear crunching at the 5:05 mark at the end of the first drag race? |
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Re: new2rocks Guide to the TRX-4 2 Attachment(s) I just tried out a set of 80mm shocks (Gmade RSDs), and what a difference! The truck is much more stable, and the stance looks much better. Attachment 361900 Attachment 361901 So I've now updated the suspension section to make that a recommendation. |
Re: new2rocks Guide to the TRX-4 I just bought my trx4. I want to thank the author of this thread for making a guide so complete and interesting. |
Re: new2rocks Guide to the TRX-4 Are those RC4WD deep dish wheels with the hub reversed? Great guide. Wish I would have known about this sooner! |
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Attachment 362121 After: Attachment 362122 With that and a washer to cover the 6mm portion of the stub, the fit is spot on. "thumbsup" |
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Re: new2rocks Guide to the TRX-4 https://uploads.tapatalk-cdn.com/201...90000b677b.jpg. Repurposed nicely on Brand X new2 Sent from my iPhone using Tapatalk |
Re: new2rocks Guide to the TRX-4 A potential tip for the TRX-4 is a pack of 5 futaba servo extensions, wire them in then seal your radio box from water. Make sure you label them! It should make maintenance on the truck quicker and easier while maintaining the water resistance of your receiver box. I currently have a pack of 100mm ones on the way to me. |
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