Custom Truck Adapters for APS/TB Motor Mounts (here: Ronins)

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whitepony   10 kW

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Custom Truck Adapters for APS/TB Motor Mounts (here: Ronins)

Post by whitepony » Jul 29 2016 1:21pm

since I dont want to neglect ES, here is my latest small project: custom truck adapters for the modular motor mounts from alien power system and torqueboard!

as so often, okp was pioneering with cast motor mount adapters for the complicated cronins, whose truck profile changes in a nontrivial way along the way from axle to kingpin!

for the interested readers, check this: http://www.e-sk8.fr/forum/viewtopic.php ... ilit=ronin

okp was nice enough to send me a few of his adapters, but they were made for 9mm belts - for 15mm belts I needed the adapters even further in towards the kingpin, which is a completely different ronin truck geometry already and which is also problematic, since the max diameter for the adapter is 30mm with the alien power system mount and basically the truck at its widest part is 30mm very quickly.

I liked the way okp did it, but I thought of a potentially simpler way to get your motor mounts connected to your truck:

I ordered 30mm aluminum and stainless steel pipes with a very thin wall (1mm for aluminium, 1.5mm for stainless steel) and cut them in very short pieces - long enough to allow quite free positioning of the motor mount, but short enough that it wont interfere with the wheels. then sanded the cuts and in the case of the aluminium, I actually polished the pipes for looks - left 2 are stainless steel, right 2 are polished aluminum:

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I brought the pipe all the way to the kingpin and decided to go for the aluminium, since the thinner wall allowed the pipe to go juuust that little bit further that I needed for the 15mm belt:
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I added the same pipe on the other side for symmetry and taped both of them firmly to an aluminium angle leftover from my very first enclosures. that way the adapters will be perfectly straight!
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another pic to show the 2 pipes to make it clearer, why both of them simply have to be perfectly aligned and straight
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used plastilin to seal the kingpin side (its much easier to add resin from the wheel side, because the opening is much larger):
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I then used the slow curing epoxy resin I still had from my laminating adventures and added quite a bit aluminium powder to increase the heat conductance of the resin (and apparently its increasing the impact and compressive strength as well). id like to use the truck for heat dissipation, since the APS & TB mount is 100% aluminium unlike the enertion CFK->aluminium mount:
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finally poured it into the pipe:
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I was pretty happy with the results after curing - this is the side where I poured in the resin - it shrank a little as expected, but still looks nice with the aluminium inside. few stains of resin on the pipe which Ill sand and polish off I guess:
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same side, but the "thick" resin part towards the board:
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kingpin side - you can see why you need the thinnest possible pipewalls for this: the pipe touches 3 of the 4 truck edges and really cant get in any further - so I would say for 15mm belt on cronins, there is only one possible motor mount right now: APS due to 30mm inner truck mount adapter diameter.
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and the 3 touching points from another perspective:
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since Im still waiting for the APS motor mount delivery, I test-mounted torqueboards V2 motor mounts which has a smaller truck adapter diameter (something around 28mm). so if you want to make custom adapters for that kind of mount, youll have to use pipes with the correct (slightly smaller) diameter.

good fit for 15mm belt and it looks pretty well aligned too:
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from a different angle
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so, if you have a favourite truck you always wanted to use for your eboard (my gbomb dont trip poppies come to my mind): its not super hard to make a truck mount adapter for torqueboards and alien power system motor adapters like that. :)
Last edited by whitepony on Aug 07 2016 6:08am, edited 1 time in total.

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Re: Custom Truck Adapters for APS/TB Motor Mounts

Post by Rikobonito » Jul 30 2016 4:44am

This seems to be a cool and perfect way to do it :P !
I have to get pipes (with good diam.), plastilin, aluminium powder (you have a approximate % used ? or just feeling ?) and follow your process :mrgreen:

Once again, thanks for sharing !!!
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whitepony   10 kW

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Re: Custom Truck Adapters for APS/TB Motor Mounts

Post by whitepony » Jul 30 2016 12:04pm

dont worry too much about aluminium powder, you can use resin only and it will be fine! you can use aluminium powder in basically any dose from what I understand. in the case of ronins, it had to have a viscosity low enough to get into all small cavities, so I didnt go too wild with the powder. :)

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Re: Custom Truck Adapters for APS/TB Motor Mounts

Post by Rikobonito » Jul 31 2016 5:17pm

thanks :wink:
you plan to drill a hole to prevent rotation or no need ?
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whitepony   10 kW

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Re: Custom Truck Adapters for APS/TB Motor Mounts

Post by whitepony » Aug 02 2016 2:38pm

no need to drill any holes!

my APS order arrived today and I set everything up. fits great :D

the motor is a lot further away from the truck axle than with my enertion mount
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well aligned
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had a little bit of room on the pipe, might need it though in the end when I actually got the belt up and running
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enough room between motor and ronin base plate pin holder. the one OKP stumbled over, but if you use the whole length of the aps mount, it doesnt seem to be a problem at all
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Re: Custom Truck Adapters for APS/TB Motor Mounts

Post by WeeChumlee » Aug 03 2016 4:18am

Nice one whitepony! :D
You could pin a tail on that and send it to the fox university of cunningness. (For the Monty Python fans out there)

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whitepony   10 kW

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Re: Custom Truck Adapters for APS/TB Motor Mounts

Post by whitepony » Aug 05 2016 12:57pm

managed to bring the motor a little bit closer so that I can actually use a 280mm belt :)

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only about 1mm room left between support pin base plate and motor on full lean:
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Okami   10 W

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Re: Custom Truck Adapters for APS/TB Motor Mounts (here: Ron

Post by Okami » Sep 01 2016 3:22am

Have you got any more pics from this? Perhaps with the belt on?

Looks really great, nice documentation of everything, a pleasure to watch / go through your build!

--

Got some ideas on how to mount my motor to the round skate type trucks.. nice idea of implementing that round cylinder over the trucks.

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Re: Custom Truck Adapters for APS/TB Motor Mounts (here: Ron

Post by bandaro » Sep 01 2016 7:42am

Neat little mod there, but I was wondering how you kept it all parallel? Surely if the tube is even 0.5* off, then the belts won't line up and track properly?

Could be worth making this into a universal DIY mounting system for those odd shaped trucks.

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whitepony   10 kW

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Re: Custom Truck Adapters for APS/TB Motor Mounts (here: Ron

Post by whitepony » Sep 04 2016 5:42am

bandaro wrote:Neat little mod there, but I was wondering how you kept it all parallel? Surely if the tube is even 0.5* off, then the belts won't line up and track properly?
actually that was my main concern with the method okp showed - I kept thinking about how to line up the motor mounts perfectly and came up with the aluminum angle dual tube: the 2 metal tubes are properly fixated on that aluminum angle and both were pushed in as far as possible on the truck, i.e. they have to be perfectly straight and thats what they are! :)

@okami: more pictures hmm, there are pictures with belt on and from the outside it just looks like any other APS mounted eboard. dont think you would see anything you havent seen on my other pictures - all the details are there!

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Re: Custom Truck Adapters for APS/TB Motor Mounts (here: Ron

Post by torqueboards » Sep 04 2016 11:59am

Nice...too bad they weren't easier to mount on Ronins but that's not too bad :)
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Re: Custom Truck Adapters for APS/TB Motor Mounts (here: Ron

Post by okp » Sep 19 2016 1:22pm

Hey White,

Now that I finished designing and producing the UNIKBOARDS mounts, I am now going to make custom mounts for the Ronins in AL7075, black anodized, or AL6061 red anodized, and also some drivers for the AmhyWheels AKASHA.

stay tuned !

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Re: Custom Truck Adapters for APS/TB Motor Mounts (here: Ron

Post by whitepony » Sep 20 2016 12:49am

cool! please make them compatible with 9-15mm belts! your adapters back then didnt work für 15mm since I needed them 6mm further in!

someone on enertion forums made adapters + mounts already and is getting ready to order a batch: http://www.electric-skateboard.builders ... mount/9862

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Re: Custom Truck Adapters for APS/TB Motor Mounts (here: Ron

Post by okp » Sep 22 2016 12:54am

yes, this is my plan ! just need some time to get the footprint of the hanger as I don't have any 3D scan around me.

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