Archived: the OG noob question thread! 😀

[Geo_Engineering_FTW]

thanks

[BluPenguin]

Press fit pulley have prongs that fit into wheel core. Regular pulley may use bolts or other methods

[Geo_Engineering_FTW]

thanks, that clarifies a lot. so regular pulley’s usually have a bolt, whereas press-fits just slide on and aren’t secured with a bolt. whats the advantage of press fit, more space maybe?

[Linny]

It runs true without much work since it rests on a bearing that’s on the axle.

[bollen]

There’s also bolt on pulleys that have integrated bearings.
The press fit ones have a cleaner look and make swapping pulleys a bit easier,
other than that they both do the job they are designed for.

Press fit pulleys and bolt-on pulleys that have integrated bearings need longer axles (e-caliber, TB218, BN220, 3DS fatboy, etc.) OR modification to the hanger, whereas bolt-on pulleys without integrated bearings usually work on normal hangers (Caliber, paris) without major modification to the hanger.

Press fit pulleys can be made to work with Caliber trucks but this means yo will need to extend the axle.
The easiest way to do this is to remove part of the hanger (usually with a dremel or lathe) to expose more of the axle inside the hanger.
There’s more info in the thread that @Linny linked to.

[Darkie02]

@Geo_Engineering_FTW

advantage of press fit,

Push fit gently better tighter fit think precision trucks over cast.

Regular pulled often involve drilling out wheels and trying to bolt down a flat plate on to a wheel hub that is dished when it’s critical to get it perfectly perpendicular to the weheel

Push pullys have been designed to fit inside the hub to do this alignment for you but at the expense of cost

[b264]

@Geo_Engineering_FTW

what problems might i encounter when riding (or more generally) if i have a caliber II truck on the front and a Bourdnamics 220mm hanger in a Caliber II baseplate on the rear? (front and rear will have the same cal II 50 degree baseplate)

The only problem I foresee is hitting your foot on the wheel if you kick push. However, kickpushing is generally avoided with electric skateboards. I would not, however, put them the other way around.

@Geo_Engineering_FTW

also a bit confused as to why Bourdnamics 220mm hanger can accomodate up to 2 x 6380 motors, whereas the Caliber II which is 10 inchs / 254mm (34mm wider than the BD’s) is too narrow for dual 6374’s or above?

Caliber II is about 184mm. The metric measurement (184mm) is the length of the hanger without the axles. The imperial measurement (10") includes axles.

[Geo_Engineering_FTW]

@b264

kickpushing is generally avoided with electric skateboards

speaking of which, on hubs ive read you can push if the battery dies, on belts you can’t. is this acurate?

[Darkie02]

@Geo_Engineering_FTW

is this acurate?

You can push with both but the gearing and belts and larger motors add adishonal resistance over hubs,

Hubs are limited by motor size and heat because of there design generally resulting in less powerful setup

[moon]

Anyone tried

47/15T on 145mm Bergs? With 170kv motors

What was your top speed like?

@CiscoV ?

[CiscoV]

I’m sorry brother. 200kv 18t since day one. I’ve taken it to 45mph on 4wd with a little room left

On 2wd they feel good. Like drinking a flat coke “no gas bubbles” lol. 4wd is where power kicks in.
Lower kv “170” should be good on 2wd

[xsynatic]

Has anyone that’s using trampas elastomere/barrels noticed a point where they get softer?

@Lee_Wright?

[Lee_Wright]

Yes 100% they get softer/better after a couple of hundred miles

[xsynatic]

Is there any trick to tighten them down more/ increasing the hardness? The screw only screws into the black plug but not the barrels itself. Or should i just put a washer on top of the barrel to compress it more?

[b264]

@Geo_Engineering_FTW

speaking of which, on hubs ive read you can push if the battery dies, on belts you can’t. is this acurate?

This is not accurate. It’s a marketing gimmick, spread by companies that sell cheap hub motor boards. If anything, belt is better because you could always cut the belt off with a pocket knife. But you can still push with them…

[drone001]

anyone have a link for 6x2 inner tubes. I have extras but the last two i replaced both failed at the stem. I’m down to only two.

[BluPenguin]

[drone001]

thx…yeah i found those as well…I don’t think imma get them any cheaper .

[BluPenguin]

Not really that’s much cheaper shipped from the US. Unless you want to wait months from china

[wafflejock]

If I’m not trusting a board yet or believe I might need to go manual at some point cause of running out of power or whatever just bring a skate tool and can pop the wheel off and throw the belt in my pocket or bag (usually riding with backpack anyway to carry stuff). For pneumatics I wouldn’t really try kicking just drag that one but for the urethane build it’s a decent little cruiser without the power too. Haven’t tried hub motor so can’t speak to that really but there will always be more rolling resistance when you add a motor and windings on there (more weight so more energy to get it spinning, plus side will have some angular momentum/inertia once the motor is spinning but overall still putting more energy in and losing more to friction than with the drive separated).