Randal Trucks?

buzztiaan

1 W
Joined
Mar 9, 2015
Messages
52
Location
Netherlands
Heya,

I am planning a longboard EV around a board i bought used, which uses 180mm 50º Randal RII trucks. (like http://randal.com/180mm-42-or-50-raw/ )

Looking around this forum, i haven't seen anyone use these. Is there a specific reason for this?

Moar info about my build is here; https://nurdspace.nl/LongboardMod

Will add more later :)
 
i have an apex 37 with Randall trucks and i cant see any mounts for them either. good luck!
 
Currently, no bolt ons for Randal or Paris Trucks.

I'm working on new trucks that will fit both those trucks but ATM. I haven't heard of any available. The welded mounts which I sell for $35 will fit them but you have to weld them.

Most people just use Caliber Trucks. Partly, because there are bolt on mounts for them and they are popular as well?

Everything looks good except for the Boat ESC in your post. The boat esc has mixed bag of results. Some say brakes work and some say they don't.
 
Looking at it, just something like http://diyelectricskateboard.com/product/welded-motor-mount-63mm-motor/ -should- work fine ..

I don't need bolt-on , as I am surrounded by 'weld for a euro' shops

I will try to make such a mounting plate locally, once I get my motor in.

@Torqueboards: are your designs opensource, or would i need to re-invent the wheel? (your silence is comforting :D)

Re: Boat ESC, I see the default configuration indeed has -no- braking, you will need to enable it.
 
ill have a go at making something up this week. once i have something more acurate ill share it up here.
as Torqueboards said, it should be simple enough :) measure truck width and approx bracket size, draw it up.
 
ok just started on my dodgy mount :D
Randal trucks taper but a good mounting spot is approx 18mm. i do have a basic mount that took me two hours as i fluffed the first one :S.. should have just bought a few from Torqueboards and modded it.. anyways that future me :D
 
Started on the moter end of things with just a 32mm mounting hole distance.

vE63tVK.png


Guess i will stretch the holes up horizontally like torqueboards did, for easier tensioning. Although i am leaning towards making that diagonal to have gravity help keep the motor in place.
 
Are the hanger's of Randal trucks are a perfect circle? I know there hasn't been much done on trucks like these with a bolt on plate since a circular shape doesn't have a square edge to keep the bracket from moving around due to vibrations induced from the road. So welding the bracket is done to make a strong joint.
 
working towards a parametric model now, motormounting side seems proper enough, the truck side of things needs more attention :)

configurable options thus far ;

// motormounting specifics

boltholepattern = 25; // screw pattern on the motor, in mm
tensioning = 7; // stretch the holes this wide, in mm
motoropening = 5; // hole opening for main axle , radius in mm
motorboltsize = 4; // 4 = M4 , 3 = M3 , etc

// full mount

centerdistance = 60; // it will center the pulleys on this, but keep in mind the tensioning is in the motor, so you get that play , in mm
truckhole = 9; // hole for the truck, radius in mm

these will output;

jAE5hk0.png


(on suggestion from someone shoulder surfing me)

yA6WHUy.png
 
Starting to think i might need to use that included adapter plate to increase the mounting size, this pulley doesnt leave any slack ...

cpYCR31.png


(motor pulley made with http://customizer.makerbot.com/things/16627 )
 
These are the published files for now,

http://www.thingiverse.com/thing:833057 (wheel pulleys, both 44 and 48 teeth versions, M5 nuttraps)
http://www.thingiverse.com/thing:833053 (motor pulley, 16 teeth version)

http://www.thingiverse.com/thing:804463 (updated motor mount)

I have 3d printed all of these out of PLA (0.3mm layers, 100% fill) and they seem to be actually working for now ... (~2km thusfar)
 
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