Crestline x DJI - RS 181 SPECTRE Edition

[AlumiPro]

If you're trying to lengthen reach higher rise bars are only going to shorten it (unless the roll is forward). The new, higher Renthals over 40mm rise have a 2 degree higher back sweep, pushing it back too. Just FYI.

I was scratching my head thinking the same thing.

 

[John_likes_bikes]

I was scratching my head thinking the same thing.

I believe, though it could be argued to the contrary... adding 14mm to the lower headset stack is going to make it feel a little shorter, too. Even with the +5mm of active reach. It probably all zeros out. The trick would be a straight steer tube fork so you can use the +6mm zero stack lower cup headset from Works.

 

[Plummet]

I'm interested to know what the weight is built up, What battery size and does the weight include pedals.

 

[Posvar1]

What’s that color considered? Carbon black or charcoal?….whatever it is it looks great!
I hope ours will have a black Cascade lower link though.
Good to see what it looks like with high rise bars. I ordered PNW Loam Carbon 50mm rise to try out, as I prefer 10deg back sweep.
Looking forward to hearing all the specs you choose on this build; drop out length, battery size, frame size….(guessing large means RH-4?) and I see 27.5 out back

Large is RH3. RH4 is XL

 

[Rob Rides EMTB]

If you're trying to lengthen reach higher rise bars are only going to shorten it (unless the roll is forward). The new, higher Renthals over 40mm rise have a 2 degree higher back sweep, pushing it back too. Just FYI.

Agree on new rentals being more backsweep. Unfortunate if trying to maximise effective reach.

My goal is to achieve a bar height from the floor of around 113cm. If I ran the same bar angles, but a lower rise (say a 35mm) and wanted to achieve the same 113cm ground to bar height, I’d have to run the bar higher on the steerer and would lose effective reach.

If using the same bar angles but the only variable is rise, then you can maximise effective reach by running higher rise, and placing the stem lower on the steerer tube.

 

[Rob Rides EMTB]

I'm interested to know what the weight is built up, What battery size and does the weight include pedals.

I’ll weigh it, it’s not gonna be much lighter than the bosh build to be honest (both with 800wh batteries). Maybe 0.5KG

 

[Astro66]

Almost done. High 60mm bars as it’s a large, trying to get the reach as much as poss!

Golden Boy says it needs more Gold ....... Go full Liberace ........

Love the fork and Renthals.

BTW. Can I ask why you didn't fit the Wireless Eagle Transmission instead of the 90 ?

 

[westcoastmtbr]

Golden Boy says it needs more Gold ....... Go full Liberace ........

Love the fork and Renthals.

BTW. Can I ask why you didn't fit the Wireless Eagle Transmission instead of the 90 ?

I’m sure Rob chose wired becauseits inexpensive to buy, replace, and maintain. I believe the wired stuff while more heavy is just more durable..

 

[Rob Rides EMTB]

was

Golden Boy says it needs more Gold ....... Go full Liberace ........

Love the fork and Renthals.

BTW. Can I ask why you didn't fit the Wireless Eagle Transmission instead of the 90 ?

just interested in trying it out to be honest. With a X0 cassette I think it might be lighter than an equivalent X0 wireless?

I’m hoping there’s less noise / stronger clutch with it too.

Edit:
X0 wireless Derailleur: 472 g
SRAM 90: 395g (+cables)

 

[MetroNeck]

was

just interested in trying it out to be honest. With a X0 cassette I think it might be lighter than an equivalent X0 wireless?

I’m hoping there’s less noise / stronger clutch with it too.

Edit:
X0 wireless Derailleur: 472 g
SRAM 90: 395g (+cables)

Less talkie, more buildie please…

I’m in a rush to hear your thoughts, so I can wait until January for the next batch.

 

[John_likes_bikes]

Agree on new rentals being more backsweep. Unfortunate if trying to maximise effective reach.

My goal is to achieve a bar height from the floor of around 113cm. If I ran the same bar angles, but a lower rise (say a 35mm) and wanted to achieve the same 113cm ground to bar height, I’d have to run the bar higher on the steerer and would lose effective reach.

If using the same bar angles but the only variable is rise, then you can maximise effective reach by running higher rise, and placing the stem lower on the steerer tube.

No doubt, I agree with you. The variable here is bar roll forward and back. There's certainly the factor of preference but if the bar is rolled forward with the rise perpendicular to the ground you lose the full dampening effect and horizontal back sweep Renthal engineered into the bar. End of the day, your bike, you do you. Looking forward to the completion of the build.

 

[AlumiPro]

Anyone know what size rear rotor it’s set up for? Guessing 200mm. Looks like there may be different size caliper brackets available so we won’t have to add spacers?

 

[Astro66]

just interested in trying it out to be honest. With a X0 cassette I think it might be lighter than an equivalent X0 wireless?

That's fair enough. It's just the SRAM Wireless interfaces with the DJI motor so well. I absolutely love the the Smoothshift, where it indexes the chainwheel for you without pedalling. I use that all the time. It just means I can remain perfectly balanced, and still shift.

Also the chain protection software, to back the power off at the instant of shifting. I have watched a few videos where people have snapped the chain on shifting.

Anyway. It's great that you'll be able to carry out a comparison for us. Really looking forward to the Dream Build Video, and riding assessment.

 

[AlumiPro]

That's fair enough. It's just the SRAM Wireless interfaces with the DJI motor so well. I absolutely love the the Smoothshift, where it indexes the chainwheel for you without pedalling. I use that all the time. It just means I can remain perfectly balanced, and still shift.

Also the chain protection software, to back the power off at the instant of shifting. I have watched a few videos where people have snapped the chain on shifting.

Anyway. It's great that you'll be able to carry out a comparison for us. Really looking forward to the Dream Build Video, and riding assessment.

I was not aware of this!
DJI communicates with AXS T-type!?
I need to research this

 

[Astro66]

DJI communicates with AXS!?

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.

 

[JJ503]

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.

Does it work with any AXS set up or does it need to be the newest version or T-type? I haven’t ran anything other than mechanical GX for years so not very familiar with wireless options.

 

[AlumiPro]

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 this maybe just an Amflow thing?

 

[Astro66]

Does it work with any AXS set up or does it need to be the newest version or T-type? I haven’t ran anything other than mechanical GX for years so not very familiar with wireless options.

Only with the SRAM Eagle Transmission. So yes the AXS T-Type. Supported electronic rear derailleur models are: XX, X0, GX, S1000.

Is this maybe just an Amflow thing?

It's setup in the Avinox Ride App. So most likely a DJI Avinox Motor thing. But I cannot confirm that.

 

[Suns_PSD]

Unless AXS T-type is hard wired to the DJI motor, DJI doesn't know the bike is shifting and therefore can't adjust power.
I mean I guess it could be reading the wireless protocol signal.

 

[Rob Rides EMTB]

Unless AXS T-type is hard wired to the DJI motor, DJI doesn't know the bike is shifting and therefore can't adjust power.
I mean I guess it could be reading the wireless protocol signal.

It does exactly this when it’s hard wired, it knows when the power draw is taken to the AXS mech and can adjust the motor power at the exact time.

 

[Astro66]

Unless AXS T-type is hard wired to the DJI motor,

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

 

[Suns_PSD]

It does exactly this when it’s hard wired, it knows when the power draw is taken to the AXS mech and can adjust the motor power at the exact time.

Surprising then that the Mith doesn't have provisions for hard wiring.

 

[AlumiPro]

So I can purchase a hardwire kit to use on my XO T-type RS181??

 

[Posvar1]

So I can purchase a hardwire kit to use on my XO T-type RS181??

That’s what I’m wondering.

 

[AlumiPro]

Ride Wrap came!
This is what we’re looking at for the install.

 

[Posvar1]

Ride Wrap came!
This is what we’re looking at for the install.

View attachment 162564

I’m thinking about doing this as well.

 

[AlumiPro]

I’m thinking about doing this as well.

I won’t ride a bike without it.
Be patient installing it and it turns out great.

 

[John_likes_bikes]

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

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.

 

[John_likes_bikes]

So I can purchase a hardwire kit to use on my XO T-type RS181??

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?

 

[MetroNeck]

I believe there is port on the motor.