lightweight eMTB paper build - options

DIY Builds
#1

Putting together a jump, dual motor, light-ish, top-mount battery, thrash build shopping list and Trampa is looking more and more competitive as a one-stop shop vs piecing it all together.

What do the clever people here think - are there clearly superior options out there for the money?

(prices are round numbers, shipping not included to US)

  • Deck

    • Haero - 2021 Bro 96 stiff (2300g) - $325 (w/ shipping)
    • Trampa - HolyPro BigBoi 35, 17 ply (3300g) - $280
    • Kaly - XL deck - $350
    • Lacroix - Prototipo (2080g) - unobtanium

  • Trucks

    • MBS - Metal Matrix II (1800g) - $200 for 2
    • Trampa - Precision Vertigo w/ barrels (1400g) - $280 for 2
    • Trampa - Precision Infinity w/ barrels (2000g) - $240 for 2
    • Apex - Air truck - $260 ea

  • Bindings

    • MBS - F5s w/ heel straps (580g)- $135 for 2
    • Trampa - Ratchet w/ heel straps (500g) - $100 for 2

  • Hubs

    • MBS - Rockstar II (593g set, fits 8" tires) - $60 for 4
    • MBS - Fivestar (557g set, fits 8-9" tires) - $60 for 4
    • Trampa - Superstar (612g set) - $125 for 4
    • Trampa - Hypa (512g set, fits 6-8" tires) - $56 for 4 (+$30 shipping lol)

  • Tires

    • Metro - 155 w/ tubes - qty 4, 1240g - $99 (unavailable)
    • Alibaba - 6" w/ tubes - qty4, 1265g
    • Alibaba - 8" w/ tubes - qty4, 1315g
    • AR-PRO - 200x50 - qty4, 1704g? - $42 (amazon)
    • Trampa - Primo Alpha 200x50 - qty4, 956g w/out tubes - $84

  • Drive

    • Boardnamics - Dual M1 AT helical steel gears (2200g) - $300
    • Moon - AT Moon Drive Batch6 (POM straight wheel gear, 1140g) - $360
    • Esk8_RU - AT helical carbon fiber gear drive (POM, 1000g) - $200
    • Trampa - Open Belt Drive w/ pulley, fits trampa trucks (1150g) - $275
    • Trampa - Pro Belt Drive twin, with 1x Infinity truck (3300g) - $485
    • Trampa - Pro Belt Drive twin, with 1x Vertigo truck (2300g) - $515
    • Trampa - SGD Twin w/ bash guards & helical steel gears (2300g) - ~$600

  • Motors

    • Maytech - 6374 170/190 closed can, battle hardened IP54 (860g ea) - $214 + $48 shipping = $262 for 2
    • Maytech - 6365 BH 170 kV (760g ea) - $194 + $48 shipping = $242 for 2
    • Flipsky - 6374 140/170/190kv 3500W (980g ea) - $154 + $4 shipping = $158 for 2 (banggood)
    • Flipsky - 6368 190kv 2700W (840g ea) -
    • Flipsky - 6354 140/190 kV 2450W (560g ea) -
    • Boardnamics - 6384 140/170 kV - $220 for 2 (free ship)
    • Boardnamics - 6355 ? (560g ea) - $200? for 2
    • Trampa - 6376 160/185 kV no sensors (1500g ea) - $420 for 2

  • ESC

    • BKB - Xenith v2, 80a cont (274g) - $275 (unavailable until 2022)
    • Maker X - Go-FOC DV4, 60a cont - $165
    • Maker X - Go-FOC DV6, 100a cont (365g) - $265
    • Spintend - Ubox, 75V 200A - $300
    • Lacroix - Stormcore 60D, 80A cont (350g) - $320
    • Trampa - HD-60T twin, 75A cont (230g) - $450
    • Trampa - 2x MKV, 100A cont (330g ea) - $500 for 2

  • Enclosure

    • DIY 3D printed + laser cut plates - $50-100
    • Knock off pelican 1200 (1100g) - $50
    • Trampa - 18650 Monster Box w/ heat sink plate (1160g) - $250
    • Trampa - 21700 Monster Box w/ heat sink plate (1200g) - $275

  • Battery

    • Trampa - pcb kit for 18650s - $440 (+$5/ea P26A cell: +$250-420) = $700 to $900
    • Trampa - pcb kit for 21700s - $500 (+$6/ea P42A cell: +$300-500) (2440g w/ box) = $800 to $1000
    • Battery builder - custom brick pack, 12s4p to 12s7p P42A (energy density: 200 Wh/kg, $0.83/Wh) - $600 to $1000
    • Turnigy - Graphene 12Ah 6S 15C (166 Wh/kg, $0.66/Wh, 1610g ea) x2 - $175x2 = $350
    • Turnigy - Graphene 8Ah 6S 15C (160 Wh/kg, $0.65/Wh, 1110g ea) x2 - $115x2 = $230
    • Turnigy - Graphene 10Ah 4S 15C (158 Wh/kg, $0.74/Wh, 936g ea) x3 - $109x3 = $327
    • Turnigy - Nano-tech 6Ah 6S1P 70C (129 Wh/kg, $0.94/Wh, 1034g ea) x2, $125x2 = $250
    • Turnigy - High Cap 12Ah 4S 12C (164 Wh/kg, $0.63, 1080g ea) $112x3 = $336
    • Gens - Tattu 8Ah 6S1P 25C (153 Wh/kg, $0.88/Wh, 1160g ea) x2 - $157x2 = $314
    • Gens - Ace 8Ah 6S1P 120C (157 Wh/kg, $1.13/Wh, 961g ea) x2, $170x2 = $340
    • Gens - Ace 6Ah 6S1P 100C (159 Wh/kg, $1.09/Wh, 834g ea) x2, $145x2 = $290
    • Ovonic - Air 10Ah 6S1P 15C (168 Wh/kg, $0.62/Wh, 1320g ea) x2, $138x2 = $272
    • Ovonic - UAV 13Ah 6S1P 25C (156 Wh/kg, $0.51/Wh, 1850g ea) x2, $146x2 = $292
    • Ovonic - UAV 12Ah 6S1P 15C (150 Wh/kg, $0.38/Wh, 1755g ea) x2, $100x2 = $200
    • SMC - Extreme Graphene 9.7Ah 6S1P 20C (196 Wh/kg, $0.69/Wh, 1100g ea) X2, $150x2 = $300
    • Venom - 8Ah 6s1p 15C (161 Wh/kg, $1.01/Wh, 1100g ea) x2, $180x2 = $360
    • Turnigy - Nano-Tech 6S 4.5Ah 45-90C, $97, 750g ea (1500g for 2), 99.9Wh ea (133 Wh/kg, $0.97/Wh)
    • Turnigy - Nano-Tech 6S 4.5Ah 25-50C, $67, 687g ea, 99.9 Wh ea (145 Wh/kg, $0.67/Wh)
    • Ovonic - 22.2V 50C 6S 4500mAh, $117 for 2, 600g ea (1200g for 2), 99.9 Wh ea (167 Wh/kg, $0.59/Wh)
    • Ovonic - 80C 5200mAh 4S1P 14.8V, $48 ea ($115 for 3), 412g ea (1236g for 3), 77Wh ea (128 Wh/kg, $0.62/Wh)
    • Ovonic - 14.8V 50C 6000mAh 4S LiPo Battery Pack, $63 ea ($151 for 3), 531g ea (1593g for 3), 88.8 Wh (167 Wh/kg, $0.71/Wh)
    • Ovonic - 14.8V 50C 4S 6700mAh LiPo, $73 ea ($175 for 3), 582g ea (1746g for 3), 99Wh ea (170 Wh/kg, $0.74/Wh)
    • Ovonic - Hardcase 14.8V 50C 6500 mAh 4S LiPo Battery Pack 14# with Deans Plug - $41 ea ($123 for 3), 522g ea (1566 for 3), 96 Wh ea, 184 Wh/kg, $0.43/Wh
    • 2 Packs Ovonic 50C 22.2V 6S 4500mAh LiPo with T Plug - $94 for 2, 615g ea (1230g for 2), 99.9Wh ea, 162 Wh/kg, $0.47/Wh

  • Other

    • LLT Smart BMS (82g)

Ok, after gathering numbers I crossed out a few Trampa items which are overly expensive compared to readily available alternatives.

It’s not clear how big the discount is if you buy multiple components as a package. The trampa website is hard enough to navigate with the obnoxious colored BOLD italics marketing pitch SELLING ONLY THE MOST ADVANCED COMPONENTS EVER CREATED MARINE GRADE AERO SPACE NASA FLYING TESLA COILS and billion drop down choices.

Edit:

Package deals:

  • Trampa - 21700 Monster box + 21700 PCB kit + HD-60T esc - $1250 (save… $0)
  • Trampa - Superstar hubs + 8" tires (any) + primo tubes + bearings - $60/ea = $240
  • Trampa - Dual spur gear drive w/ helical steel gears + vertigo truck w/ barrels + hardware - $730 (save ~$150)
  • Trampa - Dual spur gear drive w/ helical steel gears + vertigo truck w/ barrels + hardware + 6376 motors - $1100 (save ~$200)
  • Trampa - Complete emtb (without battery) - $2400
  • Apex - Predator push (Haero bro, Apex trucks, MBS rockstar hubs, MBS bindings - $1200 (save $0)
  • Apex - Predator complete - $3900

Paper Builds:

  • Lightest:
    • Haero Bro med (2300g)
    • Trampa Vertigo w/ barrels (620g x2)
    • Trampa Hypa Hubs (130g x4)
    • 8" tubes (80g x 4)
    • 8" tramp primo alpha tires (226g x4)
    • Trampa Open Belt Drive twin w/ pulley (1150g)
    • Maytech 6355 (605g x2)
    • Trampa HD-60T (230g)
    • Turnigy Graphene 8Ah 6S x2 (2220g)
    • Nano BMS
    • DIY Enclosure
    • Total: 10.10 kg (22.3 lbs)
  • Crowd Favorite:
    • Haero Bro (2400g)
    • MBS Matrix II (900g x2)
    • MBS Rockstar II (140g x4)
    • 8" tubes (80g x 4)
    • 8" MBS T3 (235g x4)
    • Moon Gear Drives (1140g)
    • Maytech 6374 (860g x2)
    • Stormcore (350g)
    • 12s4p P42A (~3500g)
    • LLT Smart BMS (82g)
    • DIY Enclosure
    • Total: 12.8 kg (28.2 lbs)
  • :100:Trampa (strong):
    • Trampa HolyPro 17 ply (3300g)
    • Trampa Infinity (1000g x2)
    • Trampa Superstar (730g)
    • 8" tubes (80g x 4)
    • 8" tramp primo alpha tires (226g x4)
    • Trampa SGD twin (2500g)
    • Trampa 6376 x2 (2500g)
    • Trampa HD-60T (230g)
    • 12s4p P42A (~3600g)
    • Total: 16.1 kg (35.4 lbs)

See for weights: (WIKI) Part weight thread - #4 by moon

Wh = Ah x Vnom

10 Likes
Reducing weight in ESK8
Share your experiences with budget AliExpress Lipos
Summer 2021 E-Games of D.I.R.T
#2

I don’t see a battery in this list. Also, you only list other premium options besides Trampa on there, except flipsky. For example, a Xenith or a Flipsky ESC would run you cheaper (Although quality with FS is a hit or miss).

A maker x would be even cheaper. The most Affordable ------ E-board dual ESCs Go-FOC DV4 base on VESC4 - MakerX

1 Like
#3

Trampa doesn’t ship batteries, so it’s not a consideration, and doesn’t affect these options.

Good pt on the ESC, I’ll add a few more. But flipsky esc isn’t a consideration, bc reliability matters.

2 Likes
#4

They do.

#5

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They don’t

2 Likes
#6

Oh damn, they changed that. But oh well, you can get the cells yourself and just drop them in, their PCB battery pack is pretty much a plug and play solution.

Also I don’t really get where you’re coming from. People do a DIY because they don’t want a standard off-the-shelf board. A prebuilt is almost always going to be cheaper, and if you buy all components from Trampa you can also let them assemble it, I mean, whats the point.

1 Like
#7

Yep, their new pcb kits are really interesting. I’ll add those too.

I’m not shopping for a prebuilt, and wouldn’t have them assemble it. I don’t care about being unique, I care about performance. This is more trying to decide it there’s a sizeable enough cost-savings to choose trampa for more components than I would’ve otherwise.

I want to know if people think their components are worth it, beside the usual stuff like hubs and trucks.

I actually haven’t heard much on their escs, their motors, their gear drive. For example, their spur gear drive is 2x expensive as the BN AT, but may be worth it in a package deal.

#8

Ahh okay gotchu.

Afaik Trampa components are all top notch quality wise. Performance is difficult to judge, you can use cheaper parts and build boards that rip your legs off too. The more important metric here imo is how long they hold up.

1 Like
#9

The phrase “top notch” in my mind also means high resistance to water, in addition to raw dry-weather performance.

4 Likes
#10

Good thing i added this :slight_smile:

#11

Trampa’s 21700 Monster Box should the easiest way to create a battery pack without any tools, and it also allows u to swap out single cell if needed (not sure y u would do that, but its there), and did anyone try to fit p42a in the holes?

1 Like
#12

They fit nicely. The latest batch of grids are wide enough for the p42a.

5 Likes
#13

If I had your budget

I want your input on these :arrow_up:

I want your opinion on these also :call_me_hand:

2 Likes
#15

Sorry, who was this addressed to?

1 Like
#16

You when you buy the ratchet straps I love there color combos but people have mixed reviews on them

1 Like
#17

I think the pcb kit is a very cool bit of innovation, but I’m not sure what the killer value add is for the customer? From what I understand, it’s not ideal to mix and match cells, so if one does go bad, I’d think twice before dropping a brand new one in.

It’s about the same price as a custom battery from a trusted builder, and it’s about as robust as a well-built pack. Trampa has managed to find a way to mass manufacture what was previously only done through significant labor, which is a huge win for the sport. But the end customer doesn’t much care if there’s no decrease in price or increase in quality.

Unless someone comes in to sing their praises, very unlikely I will. For +$35, bindings are too important and I’m willing to wait months until the F5s are back in stock.

Although I am leaning hard to the Vertigo Precision trucks. Looking more closely at the Matrix II, I didn’t realize how rough their build quality is. Same with the Stormcore - I’d love to try that out. I’ve already got a (Unity)Xenith, and I’ve read a few too many reports of reliability issues with Maker X.

1 Like
#18

I thought the solid axles of the infinity were better.

2 Likes
#19

Just going to leave this here

5 Likes
#20

Probably. the Vertigo truck is the Infinity truck but with weight saving material reductions. Aka cnc cuts and hollow shafts.

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Too bad the Apex Airs are 2x the price of channel trucks. I’m not made of money unfortunately…

3 Likes
#21

I don’t really follow the evolution of their gear but weren’t the hollow shafts prone to bending at some point?