[rideit]

Or even just a steady drill press capable of drilling and tapping two holes for me , I might have a little project. Looking to have a set of 175 Race Face Atlas cranks drilled-down to 160, or even 155.
Anyone game for this?

 

[Jm_]

Umm…

 

[rideit]

Yes?
(there is a very good reason for this, trust me).
Unless you can find a 160 or 155 Cinch compatible Crankset.
(You won’t)

 

[Westy]

I don't see what could go wrong

If I keep my eyes closed

 

[6thElement]

Z-cranks installed clocked 5deg to the right will achieve the same thing.

 

[Westy]

Could also move the spindle hole.

 

[jonKranked]

i DiD mY rEsEaRcH

 

[jonKranked]

i'm screencapping this whole thread for some future lawyer

 

[Jm_]

I don't see what could go wrong

View attachment 194489


If I keep my eyes closed

There are lots of places on cranks that can just be open space!

 

[rideit]

okay, kids

Shortening your cranks

Over the past weeks ive been gathering information on how to shorten the cranks on Rocky Mountain Powerplay bikes. I hope this info helps some of you with this quite complicated task. So in order to get shorter cranks than the stock 170's (or if you are lucky the 165) there are a couple of...

www.emtbforums.com

Seems to be the only reasonable solution available right now. If they fail, BFD, they cost $125.
If any of you brilliant, ever-knowing wags have a better solution, lots of people want to hear it.

 

[Westy]

If you don't care if they break than your expectations are easily met.

 

[rideit]

Let's just say that the gamble is likely worth more than all of the pedal-strikes.

 

[Jm_]

How long will cranks be in 2040?

 

[6thElement]

How long will cranks be in 2040?

 

[jonKranked]

You're knocking us but we're not the ones considering shortening cranks because we read an article from an emtb website

 

[rideit]

Uhhhh….maybe it was the other way around?

 

[rideit]

How long will cranks be in 2040?

Depends on how much torque the motors will have, duh.

 

[Westy]

I will happily drill some holes in a carbon handlebar for you for better brake cable routing

 

[rideit]

I have a better invention…the inside of the handlebar will be the hydraulic fluid reservoir.
I haven’t worked out the details, but there will be lots of fluid!

 

[Jm_]

I have a better invention…the inside of the handlebar will be the hydraulic fluid reservoir.
I haven’t worked out the details, but there will be lots of fluid!

Scott would probably do that.

 

[Westy]

Get a carbon crankset, cut the end off, glue the spindle mount where ever you want it, apply sunblock.

 

[kidwoo]

Let's just say that the gamble is likely worth more than all of the pedal-strikes.

I got a drill press

send'em over

Since you obviously haven't even bothered to measure the size of a pedal spindle hole and considered what moving 15mm does to place the new hole in reference to that, this should work out great.


I really will drill a hole 15mm offset from the orginal, centered and everything. That much I can promise.

 

[rideit]

20mm, if I’m going for 155.

 

[Westy]

I got a drill press

send'em over

Since you obviously haven't even bothered to measure the size of a pedal spindle hole and considered what moving 15mm does to place the new hole in reference to that, this should work out great.


I really will drill a hole 15mm offset from the orginal, centered and everything. That much I can promise.

He really needs drill, face, chamfer, tap, sign up for disability insurance. Perhaps face first, will help with accurately drilling the hole, and face first is likely to become a theme.

 

[Jm_]

Answer Mini Crank Arms at J&R Bicycles – J&R Bicycles, Inc.

Buy Answer Mini Crank Arms at J&R Bicycles

jrbicycles.com

City & kids’ bike cranks - Trek Bikes

www.trekbikes.com

 

[rideit]

Has to be Race Face Cinch interface.
No substitutes.
Therein lies the rub.

I have a drill press…but obviously to do it properly requires more than that.

 

[Toshi]

If they fail, BFD, they cost $125.

why not skip to the end and buy 165s for $125

 

[HardtailHack]

I have been practacing a bit of MIG aluminum welding, I'd be more than happy to chop a bit out, swap the bottom bits so you have the pedal threads on the wrong side then weld it all back together poorly.

Wonder much a LH tap costs? Never looked in to them.

 

[6thElement]

Wonder much a LH tap costs? Never looked in to them.

Just use a RH tap backwards.

SMRT

 

[4xBoy]

I have been practacing a bit of MIG aluminum welding, I'd be more than happy to chop a bit out, swap the bottom bits so you have the pedal threads on the wrong side then weld it all back together poorly.

Wonder much a LH tap costs? Never looked in to them.

$42 for the pair of park ones.

 

[rideit]

why not skip to the end and buy 165s for $125

You actually think I don't have 165's aready?
I do, however, have a left hand tap.

 

[Westy]

Why not just sling a set of stirrups over the top tube.

Giddy up

 

[kidwoo]

I can't wait to sell 0mm cranks to the ebike set

......almost there

 

[Sandwich]

Yes?
(there is a very good reason for this, trust me).
Unless you can find a 160 or 155 Cinch compatible Crankset.
(You won’t)

Why do you want cinch? It's one of my least favorite parts of my bike.

SHORT CRANKSETS

Home of Jcob and Cobb bike saddles and short cranks. Triathlon, road, MTB, Gravel bike saddles and accessories and Tri-shorts.

speedandcomfort.com

 

[rideit]

I don’t like Cinch either. But the entire motor interface of the Powerplay Dyneme motor is designed around it. There are absolutely no other (realistic) options.
Its just how it is.
Hence the ‘trust me’ verbiage.

 

[Jm_]

I can't wait to sell 0mm cranks to the ebike set

......almost there

Already there.

SURRON USA

sur-ronusa.com

 

[Sandwich]

I don’t like Cinch either. But the entire motor interface of the Powerplay Dyneme motor is designed around it. There are absolutely no other (realistic) options.
Its just how it is.
Hence the ‘trust me’ verbiage.

Sorry, I missed that the patient was an ebike....hmmmm

 

[Sandwich]

Yes?
(there is a very good reason for this, trust me).
Unless you can find a 160 or 155 Cinch compatible Crankset.
(You won’t)

Race Face Aeffect R eBike Crank Arms

Race Face Aeffect R eBike Crank Arms :: From $99.99 :: Race Face Crank Arms Only

www.universalcycles.com

 

[rideit]

I already have Turbine 165’s, not short enough.
Rocky uses a system with the 30mm alloy axle, not the axle-less ebike versions.
Its very, very specific, and why there are no off the shelf solutions yet. If there were, I would know about it, most likely, as would Rocky Mountain.
LOL, you didn’t ‘trust me’!

 

[Westy]

Do ebikes not have a freewheel where you can position your pedal so as to not hit things with them?