Good way to lace a powerful motor (and Rim choices)

[MadRhino]

A 2 cross Crowfoot makes for the max spoke angle that can be reasonably laced with a hub motor IMO. More than that would make the spokes rub on the flange or bend on each other.

Truing the wheel is the same work, no matter the lacing pattern. The only thing that can make truing a longer work, is a greater number of spokes.

[hillzofvalp]

what general tension do you like to use with 12 gauge and large ERD hubs? I remember doing my 9c to 100-120 units of whatever.. but I think those were 13/14 gauge.

[MadRhino]

I don't use a tensiometer. I play it by the ear so, no answer for that.

[MadRhino]

I just noticed that the laptop in the garage has a webcam, so I have some bad pictures.

[hillzofvalp]

Please see me build thread to continue discussion about rim/tire choices. I am considering doing a 26" rear and 700c front.

[MadRhino]

Please see me build thread to continue discussion about rim/tire choices. I am considering doing a 26" rear and 700c front.

69ers are tail kickers unless the frame is specific, some like it
Converting to 26 front and rear makes a better ride...
Needs a short crank

Gives the best choice of tires of course
As fat as fits, 2 ply hard casing clinchers
Rims 32 to 36mm DH specific

[hillzofvalp]

I think I'm just going to go 700c x 33mm mtx 33.... This is a torquey motor, plus I already have some big 29er rubber and a bike that is made for the wheel. For the front I'll do the ebike rated schwalbe 28.5" x 1.75" energizer pro and then maybe compensate for difference from taller rear big apple by raising the front shock (Reba can be adjusted from 80mm to 100mm travel.

[kudos]

Is that a Halo SAS rim ?

Kudos

[hjns]

Sorry, no thread or pic yet. I killed all my cameras, and my phone too.
Very simple though, here's the procedure for me, I don't have access to any machining facilities.
......
You have a good wheel, you deserved it

Great write-up MadRhino!!

I linked your post to the summary of great links in my noob first post here.

[hillzofvalp]

Do you really think I need 12 gauge spokes for this? I am hearing that they maybe aren't necessary with a strong rim... and they can make the ride much harsher. I would like to mention that my 40mph bike is a hard tail.

[MadRhino]

You don't want flex in the wheel, but it can be stiff with thin spokes.
You can build as light as you are willing to assume maintenance.

[hillzofvalp]

hmm....... do you think the mtx33 rim will need modifications to fit 12 gauge?

[MadRhino]

Any bicycle rim will.

[hillzofvalp]

K. I am thinking of trying a tubeless front rim, just because it seems like a good concept. I can't find a place to get the Inferno 27 from Sun. Notubes makes a 28mm 29er dh rim...

http://www.notubes.com/Default.aspx