I admire the journey and the work that has gone into this. What part of the UK do you hail from?
Preston
Got some good routes nearby up there then!
I was worried my 190kv motors would be too high with 1:5 ratio good to see real data. Beautiful build and hell of an effort. I love those scrub decks.
They’re not overheating on you?
I’ve got some 3d printed fans on them (not sure if they actually do that much) the highest temperature i have seen is just over 50°C, i was really ripping the board to see if anything would break
Built some exxxtra wide trucks from steel, really nice ride feel and extra stability
The new aps 6384 v2 170kv motors have got a nice amount of punch in them
A real DIY mountainboard great work dude
Great build! also never heard of these scrub decks before but I gotta have one now. Looks sweet
Nice diy work
so a bunch of stuff happened since the last update, first i broke my wrist (that was fun) and i finish a two stage chain drive, But then i bent the motor mount and the truck is now a slight banana shape and one of the sections of chain yeeted itself out of existence. Probably gonna switch to some mefo ice sliders like @NoWind and @Duffman or some 10 inch tyres. need to sort out the chain skipping when braking, replace the mounts with steel/ thicc aluminium and try to reinforce the trucks.
Stay with 9“ or go 11“ if you can. The quality of 10“ tires are just not worth it.
11“ gokart tires are definitely a level up and you do not need to worry about flat tires as well
Unfortunately 11“ will add up quite a bit on weight.
Not the mefo tires, but I guess they are around the same weight.
you got a link for them tyres? weight isn’t an issue this is my shred through the boggiest mud i can find board (was thinking of the trampa 10" but they look not too grippy)
Sure I have a link, but I guess they do not ship internationally. It’s a local shop in Russia in my city.
http://dako-karting.ru/cat.php?id=6
For comparison the 10“ trampa style tires (I bought them from China before trampa had them for sale)
How do these trucks ride?
The width on them allows you to really lean into the turn and they give a smoother ride over rough surfaces, they can be abit unweildy and for jumps the extra width can throw you off. They feel very different from channel trucks they give the same ‘resistance’ no matter how far into the turn you are. Imo these ones are abit too wide.
Why 1:7.5? How high can you go, e.g. can you also make 1:10 and still reach say 30 km/h?
Just depends on the motor kV, voltage and wheel diameter. Possible is everything
Will dig the calculator again then …
However, 1:7.5 is the highest ratio I’ve heard of so far? Anybody?
using a two stage gear box etoxx made a 1:20 ratio. i was originally gonna do a 1:8.3 for 11" wheels but decided on 1:7.5 and made it modular so a later up grade would be easier then redesigning a new drive system. using multiple smaller sprockets you can get A LOT more ground clearance then a single larger one.
What is “a two stage gear box”?