gear drives
anyways…
why gear drives?
1: cause they’ll take the longest to design and
2: idk what my deck is gonna be and it’s too much thunk to figure out the other parts 
so in cums Aug 29, we begin designing!
what’s the constraints?
well funny you ask, I got 1 goal: be as light as I could sorta do atm. oh, that plus straught cuts. ONLY straight cuts. helical smh my head 
. Oh, and they need to be simple and easy to service. simplicititty is king. ~4.4 from da jump drives is an great ratio, but i think I might be able to benefit from a bit more torque, so after much thinking for a couple minutes… 19:89 it is. ~4.68:1.
good. on 21S, it should give me about 49mph tops accounting for 80% efficiency on RS tires. good enough.
so how how about this weight?
well… let’s think about it. Jump drives are just about the lightest in the game afaik… how heavy are they? I probably measured em but I forgot, but iirc rhey’re … sub 600g? ok good start. since I mostly do street riding, I can probably reduce weight by running open drives DUN DUN DUN.
what about rocks n debris?? won’t you run into stuff getting caught between the gears?
Yes and No. while I find my gear drives bottom out quite often, I don’t see many things that hit anywhere else especially on outboard motors. i mean, if @zero_ads and @Yeahthatperson can survive with stooge drives, i should be fine! But, to cover that concern, how about I make basically a gear drive equivalent to belt covers? does that mean I kinda made a hybrid gear drive, call em… semi-open gear drives? maybe?
Partially
Open
And
Straight-cut
Teeth
drives? abso-fuccin-lutely.
well, after a long timenof designing, cum Aug 31 we got V1 up!
not bad eh? well, it’s not good enough
So we’re still on Aug 31. We need to rethink these drives.
whats wrong with them?
Well, funny you ask!
1: some parts are just a bit too similar to jump drives, like the hanger mount. I need more originality. think outside the box! Oh! btw at this point I decided I wanted @Tony_Stark 's R6 trucks! they’d be sick to try out! now the problem is: they’re narrow af. too narow to even try running 6355s outwards mounted (in relation to the deck). because of this new width constraint, if i’m gonna try to force reverse mounting, I need to make the drives close to the wheel as I can get them. So I need to rethink the hanger mounts anyways.
2: they expensi. I need to work out the parts so they’re more friendly to machine and material costs, especially the motor mount (the green part)
3: weight reduction and simplification
well, we start from mostly scratch again! squeeze all the width I could out
cum Sept 1
we’re all done! V2… sorta. i make too many changes to keep track at this point lol, and itms not the end yet!
I got support for 22x22 square, Hoyt Rosa trucks, and the R6!
I removed the motor adapter plate bit, changed the hanger mount, so it acts as the holder for the motor plate and the bearing seat, similat to BN M1AT (but with the angle adjustment resolution of the Jump drives 
6°)
at this point the plan was to for some reason have space between the wheel gear and hub, and use the wheel adapter plate, which mounts the gear to the hub to replace the hex nuts in MBS mount tires. 1 and 2 are mostly satisfied, but not 3.
so let’s redo. Let’s make a change
cum Sept 2!
I made a 4th hanger adapter, for 3ds trucks
and changed it to again, similar to M1AT, but still
and improvement
the wheel asapter is now to sit flush against the hub, and the hub will need 5mm of threads sticking out, covered by some TPU socks, wich interface with the 5 holes on the adapter plate.
we got servicability, simplicity, and we reduce weight and costs!
so that’s it?
that’s it. drives done! 4 days
estimated sub 450g guaranteed before bearing n hardware (irl measurements later on). at least a 100g reduction from jump drives! the gear mesh area is protected, with about a 0.5mm gap between the cover and wheel gear. and the wheel adapter protects the outer face so nothing can come in from the sides
the wings one the kotor plate provide plenty protection from bottoming out, albeit with limited effective angle settings to allow them to do their job. this’ll be addressed later.
at this point, R6s were ordered and are still the primary truck-of-choice. I am unable to make outboard motor mounting work on them still with the gear drives… so inboard mount it is… a tru test of my semi-open drives.
. So i had 850Wh theoretical. but I 80% of that is actually deliverable. So before I relize i’ve cut myself short, imma gotta keep that in mind. Long Story Short. 35-40 miles, I need 21S5P P45B. great! We got the battery settled.
, and I like the grip fo the V2. (saves some cost too not needing to buy new wheels)
