Was asked today what the difference was between the old collar mount and billet mount.
They move the heim vertical. This allows more hanger roll before the rod ends run out of movement. Also makes the 90 deg mounting not critical for radius rod range of movement.
The rod mount position is raised for more torque control. (Less strain on rods and hardware).
One thing that Iāve been very curious about- how does the billet mountās āclockingā on the axle affect the boardās handing?
in other words/perspective, shortening or lengthening the linkages will rotate the hanger and away from or towards the links in a way that wasnāt really possible with the old collars. Does changing the links lengths like this appreciably affect the feeling of the board?
90deg setup is optimal. Rotated Fore or Aft a few degrees from 90, any difference would be negligible. Moving away from 90 increases rod and hardware loading either direction when tortional force is applied to the hanger.
I run 8s lion with the 56118 650kv with 11 / 78. I havnt tried higher s than 8.
I like to gear the setup to the track.
I have fund that I cant go lower than 11t pignon as I havnt fund any with a lower count that are durable enough. 11t and up you can find some that are almost indestructible (losi / castle creation). So you can have 11, 12, 13 and 14 ready to gear for the specific track.
On my setup I have fund that I would like to have it geared slightly lower for some tracks. Its not all tracks that allow us ti go 65kmh. With the 560kv I think I could get closer to where I want to be on some tracks.
I would stick to the 78t wheel gear. That way you can go with the 70125 560 kv on 8s and be able to gear for lower speed on the tight European tracks with 11t, and then bump up the pignons for other tracks track where the straight allows higher speed.
I havnt tried the max5 and 70125 combo yet. But thats the next thing I will look into when next season comes.
For a one setup to everything I do think the 56118 650 kv on 8s 11/78 fits good.
It is quite hard to explain how much power one of these controllers has without riding one. I had a single max 4 and 70125 (12s8p p42a) geared to nearly 120kp/h, and it was absurdly fast at all speeds. Even though I had spent the past couple of years before that riding very high-power 18s vesc boards it was very hard to control for the first week. I would recommend going max 5 if you are going the dual motor route and gearing very high.
Also if this is anything besides a dedicated track exclusive board I would consider doing a li-ion pack, more range, less hassle, and lasts longer, the weight penalty is negligible in my experience unless you are far more talented than I am.
Because of a broken receiver antenna, I once have a 12 km/h to 60 km/h unexpected acceleration with my Hummie Hubs build. I flew before reaching this speed, of cause. I canāt imagine what could happen if this top speed was 120 km/hā¦
Iām no speed demon(my typical stree riding is <30mph) but raceboards on a track are something else. I used to race a DIY Kaly on channels, and anything above 30mph had me on edge, even on track.
This weekend I hit 49mph on Ankle Wreacher (3-links) at Apple Valley- and I was totally stable. I wouldāve gone faster, but my board just didnāt have it. Currently changing my board setup to fix this.
Additionally, on a few corners where I was approaching top speed, I was feeling differential torque coming out of my motors. Good to avoid this by having a 5~10mph headroom on top speed, which really helps with board predictability.
TLDR; Donāt underestimate the desire for top-end speed
to add to Tucker, i rode a superspine a couple weeks ago and i found myself at 40mph and it felt like i was below 30. Insanely stable and iād totally be willing to try and hit the 50ās on one
For anyone looking for pinions. I swear by these cheapies. Wear better than anything else Iāve tried so far. Castle, Losi, Gdsā¦
I just found this on AliExpress:
AU$14.25 | SURPASS HOBBY 1 Pcs M1.5 8mm 11T-14T 15-17T 18T-20T Metal Pinion Motor Gear For 1/5 1/6 RC Car 8mm Shaft 5687 4985 Series Motor https://a.aliexpress.com/_mqiV4xm
for me, the front foot strap is enough to get the leverage i need on the board with the right bushing setup. when i had a harder bushing on the rear, i wanted to try a rear binding but i move my back foot a lot so it didnāt seem like a good idea. @poastoast, @Tasventouras and @Dinnye the only ones iāve seen using two bindings when racing so maybe they can give a little insight on why they use two. i was tempted to throw a toe clip on for my rear foot but a switch to a softer rear bushing negated the need for that.