whitepony
10 kW
- Joined
- Feb 19, 2015
- Messages
- 663
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?f=8&t=385&hilit=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:
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:
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!
another pic to show the 2 pipes to make it clearer, why both of them simply have to be perfectly aligned and straight
used plastilin to seal the kingpin side (its much easier to add resin from the wheel side, because the opening is much larger):
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:
finally poured it into the pipe:
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:
same side, but the "thick" resin part towards the board:
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.
and the 3 touching points from another perspective:
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:
from a different angle
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.
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?f=8&t=385&hilit=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:
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:
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!
another pic to show the 2 pipes to make it clearer, why both of them simply have to be perfectly aligned and straight
used plastilin to seal the kingpin side (its much easier to add resin from the wheel side, because the opening is much larger):
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:
finally poured it into the pipe:
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:
same side, but the "thick" resin part towards the board:
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.
and the 3 touching points from another perspective:
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:
from a different angle
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.
