Crestline x DJI - RS 181 SPECTRE Edition

[AlumiPro]

AXS Extension Cord - Eagle Transmission

The extension cord is an optional item to power the Transmission derailleur by the main system battery instead of a separate AXS battery. The extension cord interfaces to the derailleurs AXS battery port and is designed to be internally routed through the frame directly to the drive unit. The...

www.fanatikbike.com

Question is, do you heed to split another power cable or are there extra plugs on the DJI?

I always figured that SRAM extension cord was to only supply power to the derailleur off the ebike’s power supply, not being a communication wire as well

 

[Suns_PSD]

Yes it does. If I'm stationary, and I lift my rear wheel and push shift up or down. The motor automatically rotates long enough for the derailleur to move the chain onto the newly selected gear. Obviously this also happens when you are riding.

Is your T type hard wired to the DJI motor?

Trying to determine where this signal comes from.

Thanks.

 

[BikingBad]

Is your T type hard wired to the DJI motor?

Trying to determine where this signal comes from.

Thanks.

According to DJI Avinox, the signal comes from AXS remote. Nothing to do with how AXS derailleur is powered. I’ll confirm once my Amflow is delivered 2-3 weeks.

 

[MetroNeck]

According to DJI Avinox, the signal comes from AXS remote. Nothing to do with how AXS derailleur is powered. I’ll confirm once my Amflow is delivered 2-3 weeks.

That would make sense, as that the trigger sends the signal to the derailleur, which would leave the cord for power only.

 

[Astro66]

Is your T type hard wired to the DJI motor?

Trying to determine where this signal comes from.

Thanks.

Yes. That wire from the derailleur goes to the DJI motor.

So. This is the order of operation. You press wireless gear selector. It tells the derailleur to change gear wirelessly.

Then the hardwire from the derailleur to the motor, tells the motor to back off power whilst the gear is being changed.

This is the same for the auto motor indexing when you change gear, whilst not pedalling.

The derailleur through that hardwire, tells the motor that you have chosen a new gear. So if you are not pedalling. The motor spools forward to lift the chain onto the new gear.

Anyway. Lets not fill this thread with gear selection stuff.

If I get time, I'll put my bike on my stand and show this working. But I'll post it in the Amflow thread.

 

[Astro66]

I'm no rocket scientist but the DJI reading shifts through Bluetooth would seem to make a lot more than by sensing power going to the derailleur for a shift.

There is no information on how it is done. But I have the Shimano Di2 System on my Merida E160. And the power cable to the derailleur, is also the communication cable.

The only way to prove the SRAM cable is the communication, would be to connect a battery instead of the cable, and prove the auto indexing no longer works.

Unfortunately I don't have a battery.

 

[John_likes_bikes]

I always figured that SRAM extension cord was to only supply power to the derailleur off the ebike’s power supply, not being a communication wire as well

I think there's bad SRAM info, especially based on this last post . And to not ever hear about this functionality until now makes me question it more.

 

[Astro66]

I think there's bad SRAM info, especially based on this last post . And to not ever hear about this functionality until now makes me question it more.

Amflow Support confirms this ability.

Amflow Customer Support team is here！Amflow Support questions only please

Hi. I am upgrading the rear shock on my Carbon to the Fox Float X. How many spacers are standard in the shock, as delivered, on the Pro? Thank you. Hi there! Thank you for your inquiry. The rear shock on the Amflow PL Carbon Pro is delivered with 0.4 spacers as a standard configuration. If you...

www.emtbforums.com

 

[Rob Rides EMTB]

Last needed to say about this... you and 2 other people alluded to AXS needing to be hardwired to a power source for quick shift to work. I'm not disputing that the functionality exists, only trying to sort through the misinformation so we can all get the facts straight.

According to the post you reference there's no mention of power source need but reading between the lines I think it's safe to say we don't need a $190 wire to make it work.

Also, thx for pointing out this feature. It's like overrun but with a purpose.

100% needs a hard wire. Confirmed with DJI

 

[AlumiPro]

100% needs a hard wire. Confirmed with DJI

Now the next question; which wire length for the RS181 MX with 440mm drop out?
The 780mm or 955mm?
Obviously the 955mm would be long enough, with the extra being bundled up in the motor cover, but would rather not if the 780mm is long enough.

 

[westcoastmtbr]

Rob, a few more pics are always welcome! What size are you going with, RH4? Also, what size dropper post are you going with... curious about your build before the video.

 

[John_likes_bikes]

THIS is now the last of it... confirmation from the hoarses mouth on both needing to hardwire the deraileur power and there being a port on the motor. Not that I didn't trust you guys, but....

 

[sethimus]

Last needed to say about this... you and 2 other people alluded to AXS needing to be hardwired to a power source for quick shift to work. I'm not disputing that the functionality exists, only trying to sort through the misinformation so we can all get the facts straight.

According to the post you reference there's no mention of power source need but reading between the lines I think it's safe to say we don't need a $190 wire to make it work.

Also, thx for pointing out this feature. It's like overrun but with a purpose.

do you REALLY think SRAM is giving other companies access to their proprietary wireless communication protocol?

 

[Jazzii]

Hardwired it is. I'm guessing some sort of BUS system in the hardwiring, probably serially coded over the 2 wire power, like RS485.

View attachment 162549

No BUS! Detaileur must by wired to motor to be powered thru deraileur cinnector on dji motor. Works with any deraileur which is connected and powered from motor! When you shift, power from motor conector goes to deraileur, this is signal for system to turn motor few turns for shifting. No magic! Works also with old (non t-type) axs, prooved!

 

[Astro66]

Works with any deraileur which is connected and powered from motor!

Have you tried and confirmed this? Because Amflow Support have stated that it requires SRAM Transmission, models : XX, X0, GX, S1000.

 

[Jazzii]

Have you tried and confirmed this? Because Amflow Support have stated that it requires SRAM Transmission, models : XX, X0, GX, S1000.

My friend rides old axs gx, works same way!

 

[Jazzii]

We used these two parts:
AXS adapter:

https://allegro.sk/ponuka/nabijaci-kabel-sram-predlzovaci-kabel-axs-pre-pohonnu-jednotku-sram-eagle-16179134478?utm_source=notification&utm_medium=cartWithPaymentCz&utm_campaign=fd8eae09-a77e-4400-bc26-84bdf1c5e8ec

Connector to DJI motor:

https://allegro.sk/ponuka/pripojovaci-kabel-bosch-power-connector-bes2-supernova-1300-mm-15364569128?utm_source=notification&utm_medium=cartWithPaymentCz&utm_campaign=fd8eae09-a77e-4400-bc26-84bdf1c5e8ec

All together under 3O EUR shipping included!
Only thing you must do is connect wires from connector to wires from adapter! Connect black with red and red with black!
Works with old axs as well as with T-Type! Enjoy!

 

[JJ503]

What dropout lengths are those purchasing size RH3 going with? Sounds like you can choose between 445 or 450 with initial order. Would love to hear from past Crestline owners. I was thinking 450 at 6’ tall.

 

[EmtbFanatic]

What dropout lengths are those purchasing size RH3 going with? Sounds like you can choose between 445 or 450 with initial order. Would love to hear from past Crestline owners. I was thinking 450 at 6’ tall.

450 29er

 

[AlumiPro]

What dropout lengths are those purchasing size RH3 going with? Sounds like you can choose between 445 or 450 with initial order. Would love to hear from past Crestline owners. I was thinking 450 at 6’ tall.

I’m 6’-2”, 34” inseam and long arms. I currently have a 2023/2024 RS75 RH3 with the saddle slammed back, 35mm stem, no reach adjust, and 40-50mm riser bars/10deg back sweep.(which make the reach even shorter)…..it’s a bit cramped. I fall dead nuts in between frame sizes. I went with the RH3 for a shorter WB, because I ride very tight single track “deer trails”.
My new RS181 frame is a RH4 to gain some cockpit room and it will be very close to my MTB 500mm reach. The RS181 is replacing the RS75. I’ll be running the 440mm CS drop out to get the WB and CS length very close to what I want.

 

[westcoastmtbr]

Would very much like to know more Rob about the buildout? Any more teaser photos or info (weight) observations you care to share? Thanks

 

[westcoastmtbr]

Fresh off the press!

 

[John_likes_bikes]

Fresh off the press!

View attachment 162752

Cool to see this bc it looks like what I'll build up... like seeing the future! lol I was thinking those Mavens too, but I think I'll go with the red splatter.

 

[Suns_PSD]

Fresh off the press!

View attachment 162752

So you already got one and got it built up! It was only announced like 3 weeks ago.

I'm guessing about 52#s ready to ride with the Zeb & the coil, plus I'm sure DH tires?

 

[westcoastmtbr]

nope, I don't have one, that showed up on the Web, and I suspect the owners at Crestline posted it.

 

[AlumiPro]

nope, I don't have one, that showed up on the Web, and I suspect the owners at Crestline posted it.

He’s the owner of the bike!
I believe that might be a Crestline hat he’s wearing as well.

 

[sheamus710]

What travel is everyone going to run?

I’ll start out at 180/181 but would like to try 190/181 or 200/181 at some point if possible

 

[AlumiPro]

Troydon has responded quickly to some questions I had emailed him;

• “You can slam a 225mm new model AXS dropper all the way to the knuckle in an RH4 size frame”
• “200mm rear rotor mount”
• “the frame paint color code is: TC 17045”

 

[EmtbFanatic]

Troydon has responded quickly to some questions I had emailed him;

• “You can slam a 225mm new model AXS dropper all the way to the knuckle in an RH4 size frame”
• “200mm rear rotor mount”
• “the frame paint code is TC 17045”

Troydon has responded quickly to some questions I had emailed him;

• “You can slam a 225mm new model AXS dropper all the way to the knuckle in an RH4 size frame”
• “200mm rear rotor mount”
• “the frame paint code is TC 17045”

What size dropper could be slammed in the older RH4 ? 200?

 

[AlumiPro]

What size dropper could be slammed in the older RH4 ? 200?

I’m not sure. My current Crestline is a RH3.
I was just wanting to confirm that I could slam the new 200mm AXS dropper in the RH4 frame that I ordered.
The new AXS dropper has more stack height due to the new lower battery mount location, so I wanted to confirm I’d be able to get it as low as possible in the frame.