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09-13-2021, 10:04 AM | #1 |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| 2 speed transmission vs 2 speed transfer case
Hey all. New to the forum looking for some advice. I have a Redcat Gen 8 PACK kit, and would like to install some type of high/low selectable gearing. With no direct fit option, some type of retro fit is in order. Options are A: Retrofit 2 speed Traxxas or Axial transmission, or B: retrofit generic 2 speed transfer case ie... Helios. It seems to me that fitting a transfer case would be cleaner and require less modification. What is everyone's thoughts? ANY advice would be much appreciated? What would be advantage / disadvantage to using a 2 speed transfer case vs 2 speed transmission? Is one way more practical, suitable, desirable? Thanks in advance!!!!!
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09-13-2021, 11:28 AM | #2 |
I wanna be Dave Join Date: Jun 2017 Location: Humboldt county
Posts: 4,475
| Re: 2 speed transmission vs 2 speed transfer case
Or Option 3, go brushless for a wider range of speed.
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09-13-2021, 02:12 PM | #3 |
I wanna be Dave Join Date: Sep 2011 Location: Douglassville, PA
Posts: 4,218
| Re: 2 speed transmission vs 2 speed transfer case
I'd go with the t-case. I think it would be a bit easier overall. There is no practical difference between a 2-speed t-case or trans, you'd never know the difference "behind the wheel"
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09-13-2021, 08:04 PM | #4 |
RCC Addict Join Date: Jun 2008 Location: Mudville
Posts: 1,591
| Re: 2 speed transmission vs 2 speed transfer case
unless the gear ratio is different enough, it's likely better to move to a Sensored ESC/Motor combo.
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09-14-2021, 09:14 AM | #5 |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| Re: 2 speed transmission vs 2 speed transfer case |
09-14-2021, 09:15 AM | #6 |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| Re: 2 speed transmission vs 2 speed transfer case |
09-14-2021, 09:17 AM | #7 |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| Re: 2 speed transmission vs 2 speed transfer case Thats exactly what I was thinking. And to me it seems transfer case would be easier to fit. Which makes me wonder why its not more common.
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09-14-2021, 11:45 AM | #8 |
I wanna be Dave Join Date: Sep 2011 Location: Douglassville, PA
Posts: 4,218
| Re: 2 speed transmission vs 2 speed transfer case
Not an easy retrofit. I shoehorned a different single speed in there, but going much larger (2dsp is about double the size) is a bit tough. That's a big, bulky skid, lots to trim out. |
09-14-2021, 12:39 PM | #9 | |
I wanna be Dave Join Date: Jun 2016 Location: Austin
Posts: 6,005
| Re: 2 speed transmission vs 2 speed transfer case Quote:
Sensorless brushless motors are typically used on go-fast bashers, and racers. Not to complicate things TOO much, but there is a sensorless brushless motor type that does work very well in a crawler - but the motor type is different, it's known as an "outrunner" and the outside of the can spins rather than the inside. However, they are quite noisy unless used with Holmes Hobbies new Silent ESC. The Holmes Revolver is an excellent example of a crawler-specific outrunner motor. That all being said, a sensored brushless setup will have a much wider RPM range and typically removes the need for a 2-speed. | |
09-23-2021, 04:34 AM | #10 |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| Re: 2 speed transmission vs 2 speed transfer case Thanks for the picture and comparison. That puts things in perspective for sure. I've only seen the 2spd transfer cases in their ad pics. Didn't realize they'd be that much larger. But makes sense for sure. Does the 2nd speed in a transmission add much more real estate? Ive never had a 2spd transmission in my hand either.
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09-23-2021, 06:20 AM | #11 |
I wanna be Dave Join Date: Sep 2011 Location: Douglassville, PA
Posts: 4,218
| Re: 2 speed transmission vs 2 speed transfer case
Depends on the transmission. Some are more compact than others. The AX2 is somewhat bulky for example, while the TRX4 unit is a little more svelte. RC4WD makes one for the trailfinder (R3 Trans) that would probably be your best bet since it mimics the layout you already have, though you'd have to come up with a way to mount it.
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09-23-2021, 10:42 AM | #12 | |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| Re: 2 speed transmission vs 2 speed transfer case Quote:
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09-23-2021, 05:00 PM | #13 |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| Re: 2 speed transmission vs 2 speed transfer case |
10-23-2021, 08:37 PM | #14 |
Rock Crawler Join Date: Nov 2014 Location: North to Alaska - go north, the rush is on....
Posts: 999
| Re: 2 speed transmission vs 2 speed transfer case
That's a beautiful truck Scoot!
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10-29-2021, 08:27 PM | #15 |
Newbie Join Date: Sep 2021 Location: Hebron
Posts: 9
| Re: 2 speed transmission vs 2 speed transfer case |
10-30-2021, 08:38 AM | #16 |
I wanna be Dave Join Date: Sep 2011 Location: Douglassville, PA
Posts: 4,218
| Re: 2 speed transmission vs 2 speed transfer case This is a Wendigo with 2.2 tires. Uses the same driveline as the Gen8 with 1.9's. I couldn't gear it down far enough with the stock ratios and the larger tires, so I swapped out the t-case with one that had a higher ratio. Now it's butter. I second that, looks fantastic sir! |
Tags |
2 speed transfer case, 2 speed transmission, redcat gen 8 |
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