05-28-2018, 09:17 PM | #1 |
Quarry Creeper Join Date: Feb 2016 Location: Australia
Posts: 252
| Pinion mods
Hi all. So I completed my kit last week and it has been going fine on 3s with 3 bearings in the rear with no shims (yes bad.. none came in kit but they will arrive tomorrow) and normal as per instruction 2 bearing and spacer in the front. Now I just upgraded my front bulkhead to the GPM and testing with the stock spacer and 2 hearings it binds up shockingly (as we know) to the point where I can't turn it by hand. So from my understanding the below diagram is how the 3 installs work. Stock: So this works with bearing spacer bearing and 2 shims for 6s (according to manual) BHB: Grind down the tabs, use 3 bearings and X number of spacers to pack between the first bearing (held by 3 screws) and the C clip. This brings the pinion away from the spur by a few .** of a mm creating a better mesh. Standard 3 bearing mod: Install bearing, about .6mm of shims then 2 more bearings. This leaves a gab between the first bearing and the 3 holding screws so the pinion is a little further away from the spur. Now... While I understand how the 2 mods work, what is stopping the "3 bearing mod" from sliding forward slightly causing a huge bind? I am not trying to debate what works/doesn't work I just want to only 1 mod and not spend the $80 (that's how much the gears cost in Australia) if something fails. Sent from my SM-G935F using Tapatalk Last edited by Spunkybob; 05-28-2018 at 09:27 PM. |
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05-29-2018, 10:33 PM | #2 |
Newbie Join Date: Aug 2015 Location: IL
Posts: 31
| Re: Pinion mods
when torque is applied to the driveline, there will be a force repelling the pinion and bevel gear away from each other. In your picture, the pinion will try to slide downward, and never upward, when you are either braking or accelerating. I kept using 3 bearings in my XL and it holds well. But I used castle ESC and tuned the torque down. In my opinion, 6S with a monster ESC plus castle 1515 will destroy any bevel/pinion gear if you are not careful with the throttle. |
05-29-2018, 11:04 PM | #3 | |
Quarry Creeper Join Date: Feb 2016 Location: Australia
Posts: 252
| Re: Pinion mods Quote:
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06-04-2018, 11:56 AM | #4 | |
RCC Addict Join Date: Jan 2016 Location: Bar Harbor
Posts: 1,529
| Re: Pinion mods Quote:
Last edited by BarHarborBasher; 06-04-2018 at 11:58 AM. | |
06-04-2018, 03:39 PM | #5 | |
Quarry Creeper Join Date: Feb 2016 Location: Australia
Posts: 252
| Re: Pinion mods Quote:
Is that on YouTube? I've watched your videos but I may have missed the assembly one. So far the simple 3 bearing no grinding mod has been fine but every now and then I hear a slight bind usually after a bad landing or going from forward to reverse too fast. I have a dremmel and my pinion fits in the chuck of my bench drill. Sent from my SM-G935F using Tapatalk | |
06-04-2018, 04:26 PM | #6 | |
Rock Stacker Join Date: Feb 2017 Location: Finland
Posts: 67
| Re: Pinion mods Quote:
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06-05-2018, 07:36 PM | #7 | |
RCC Addict Join Date: Jan 2016 Location: Bar Harbor
Posts: 1,529
| Re: Pinion mods Quote:
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06-05-2018, 07:37 PM | #8 | |
RCC Addict Join Date: Jan 2016 Location: Bar Harbor
Posts: 1,529
| Re: Pinion mods Quote:
Last edited by BarHarborBasher; 06-11-2018 at 04:31 PM. | |
06-05-2018, 07:40 PM | #9 | ||
Quarry Creeper Join Date: Feb 2016 Location: Australia
Posts: 252
| Re: Pinion mods Quote:
Quote:
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06-06-2018, 04:01 AM | #10 | |
Quarry Creeper Join Date: Feb 2016 Location: Australia
Posts: 252
| Re: Pinion mods Quote:
I'm going to have to order another packet of axial shims. I wish In was in the US and I'd send you my pinion.. I'm sure I can do it myself but I'm worried if I stuff it up its $$ Does anyone make a 3rd party pinion that's already modded? Sent from my SM-G935F using Tapatalk | |
07-02-2018, 08:59 AM | #11 | |
Newbie Join Date: Aug 2015 Location: IL
Posts: 31
| Re: Pinion mods Quote:
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07-03-2018, 01:06 PM | #12 | |
RCC Addict Join Date: Jan 2016 Location: Bar Harbor
Posts: 1,529
| Re: Pinion mods Quote:
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07-03-2018, 04:39 PM | #13 | |
Quarry Creeper Join Date: Feb 2016 Location: Australia
Posts: 252
| Re: Pinion mods Quote:
One day I'll be this man.. one day In your opinion is an aluminium rear axle a must?? I was either going to get that or the aluminium transmission housing. Sent from my SM-G935F using Tapatalk | |
07-04-2018, 11:36 PM | #14 | |
RCC Addict Join Date: Jan 2016 Location: Bar Harbor
Posts: 1,529
| Re: Pinion mods Quote:
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07-04-2018, 11:59 PM | #15 | |
Quarry Creeper Join Date: Feb 2016 Location: Australia
Posts: 252
| Re: Pinion mods Quote:
I got the aluminium bulkhead because after a few nose landing I didn't trust the plastic housing. I have the boot dialed and I'll make some leather limiting straps and do your pinion mod with my 3 bearings. What about the plastic transmissions that we see all melted? I hate spending money when I don't have to so I appreciate your incredibly valued input. Sent from my SM-G935F using Tapatalk | |
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