Greyborg RC + RockShox Boxxer Race

[oatnet]

Please excuse me for the recommendation but I believe it's better to open a new thread with the specific motor in 'motor technology' section.

Already exists:

viewtopic.php?f=2&t=33831

[Accountant]

Reservations were canceled for 3 motors.


3 motors still avaliable.


Please contact me on e-mail = epmpartner@yahoo.com

[MadRhino]

Good, I can start this build sooner, thanks to whoever cancelled.

[Cicada]

Hey people just for the record

In Hal list of needings to build a GB the seatpost diameter is wrong.
Hal stated 29.6 on the list but actually won't fit, is too big...
Wrong infos is worse than no infos. Could someone please suggest right diameter?
The bike is slowly coming togeter, so looking forward!

[patrickza]

I'm sure Hal mentioned 28.6 not 29.6. I use a 27.2 stem with a 27.2 to 28.6 shim and even though the shim is a little short ending just above the bolt, it still grips well.

[briangv99]

Hub #27 arrived safe and sound this morning, thanks Vladimir. Took about 4 weeks to Aus, but well was worth the wait, what a beast . Can't wait to lace it up into the 24" rim I have ready and waiting. Just have to patiently wait for the Sapim 12ga spokes and the Lyen 244110 to arrive.

[Cicada]

I got some e-mails where you ask: "what I need for greyborg RC?" and "what work I have to do?" so here is a quick check list I have made.
It is for model with hub motor as shown on attached picture.


WHAT I NEED pcs

1 front hub 1
2 spokes 36 pcs front 1
3 spokes 36 pcs rear 1
4 rim 2
5 rim protection belt 2
6 tyre tube 2
7 tyre 2
8 brake adapter for 203mm disc - front 1
9 brake adapter for 203mm disc - rear 1
10 front brakes 1
11 rear brake 1
12 disc rotor 203mm 2
13 stem 1
14 head set - n 1
15 fork 140-200mm travel 1
16 steerer alu 680-700mm 1
17 throtle with regen button 1
18 left handle cover 1
19 Cycle analyst 1
20 frame with canopyes and swingarm 1
21 stand 1
22 M5x16 hex screws 20
23 blind rivetts M5 10
24 M5 nuts 10
25 swingarm bearing 2
26 shock 150-190mm 1
27 Seat tube 29,6mm x 250mm 1
28 seat 1
29 hub motor 1
30 botom bracket 1,375"x24TPI x 68mm/ 123mm 1
31 sprocket 1
32 chainguard 1
33 crankset 1
34 pedals 1
35 chain 1
36 freewheel 1
37 harness 1
38 fuse 100A 1
39 fuse housing 1
40 key switch 1
41 master contact 1
42 charging socket for chasiss 1
43 back light 1
44 controller 1
45 battery cell headway 10Ah 24
46 charger 1
47 BMS 24S 1



WHAT TO DO
47 assemble battery pack and BMS
48 Making harness
49 painting canopyes

50 rear wheel lacing
51 front wheel lacing
52 tyres mounting
53 press in headset
54 press in swingarm bearings
55 install fork
56 assemble swingarm
57 install shock
58 install bottom bracket
59 install cranks
60 install sprocket
61 install chain guard
62 install pedals
63 install seat tube
64 install controller
65 cut canopyes
66 install charging socket
67 install key switch
68 instaling front disc
69 install rear disc
70 install freewheel
71 install front wheel
72 install rear wheel
73 install stand
74 install chain
75 install stem
76 install steerer
77 install front brake
78 install rear brake
79 install instrument
80 install speed sensor
81 install throtle
82 install left handle
83 install left canopy using blind rivetts
84 take off left canopy
85 install right canopy using screws and nuts
86 install main contactor
87 install harness
88 install battery
89 test electrical system
90 install left canopy
91 install seat
92 quality check
93 test drive

Thanks a lot Patrickza, going buying another one....
Hal mentioned 29.6, so I have a wrong one now...page 6 of this thread.
Hoping the shop will keep back the one I have.

[Accountant]

It seems that words are very cheap this days...


5 motors still on stock,


If you want one please send me email : epmpartner@yahoo.com

[gensem]

Alot of people is losing face these days...
Anyway my baby arrived today Accountant.
For thoses that dont know, motor is 9.3kv.

[gensem]

Hub #27 arrived safe and sound this morning, thanks Vladimir. Took about 4 weeks to Aus, but well was worth the wait, what a beast . Can't wait to lace it up into the 24" rim I have ready and waiting. Just have to patiently wait for the Sapim 12ga spokes and the Lyen 244110 to arrive.

Briang what 24" rim are you going to use?

[oatnet]

For thoses that dont know, motor is 13kv and not 9.5kv as stated before.

Hey, the reported spec was only off by 37%, pretty much the same as what would get from vendors in China, so we should be used to it.

The 135mm wheel spacing is accurate though, right?
And the axle is 14mm x 10mm?

-JD

[gensem]

For thoses that dont know, motor is 13kv and not 9.5kv as stated before.

Hey, the reported spec was only off by 37%, pretty much the same as what would get from vendors in China, so we should be used to it.

The 135mm wheel spacing is accurate though, right?
And the axle is 14mm x 10mm?

-JD

They have another motor aside this one, its not like the were wrong by 37%, they probably messed this hub specs with the other one or something like it. Once again I do understand your pain... I WANT MY MOTOR RUNNING ASAP TOO!

[fractal]

For thoses that dont know, motor is 13kv and not 9.5kv as stated before.

Hey, the reported spec was only off by 37%, pretty much the same as what would get from vendors in China, so we should be used to it.

The 135mm wheel spacing is accurate though, right?
And the axle is 14mm x 10mm?

-JD

They have another motor aside this one, its not like the were wrong by 37%, they probably messed this hub specs with the other one or something like it. Once again I do understand your pain... I WANT MY MOTOR RUNNING ASAP TOO!

Ok, now i'm totally confused! They have 2 motors with different specs??? Wich one are we getting?

[gensem]

As far as I know they have two kvs of the motor we are getting, being 9,3kv and 17... everyone is getting the 9.3kv one. The 17kv one is still being made.
There is also another design wich no one has a clue about the specs and they might mismatched the kv number with that other motor, because it would smart to have a slower product to be used by regular people. But do not take my word on it. All im saying is only based on my own observation

[markobetti]

Sorry for confusion, my bad and my mistake. .
kv of all motor being sold is 13 .. 17kv is in a producing stage right now..One for doc and few stay in Croatia for test.
Other 13kv motors are in producing state and accountant has 5 left for sale
Accountant is also working on spokes and rims to provide the toughest wheels possible for bicycle

[gensem]

I think someone asked about the phase wires gauge earlier.

Red one is a tipical 10awg silicone wire from Wojtek the other ones are the big motor phase wires.

[Accountant]

General appologies about confusion.

I will try to do some damage control.

Since the data from chinese supplier is not the most reliable information on the earth, i was reluctant to public technical infos.

Official testing was not done jet.

All I can tell is that all 30 motors from first batch are identical.

Kv is about ...something.

120 kg driver with 48 V battery pack of the flat road can reach max speed 51 kmh,in less than 3 seconds (measured by GPS).

Italian friends informed us about max speed higher that 140 km. i was not there, but I trust them.


Best thing we can do at this moment is to publish some videos with different setups, so any one of you that can help that way, please go ahead.


Motor is very solid, and do not get warm very easily, so high speeds are possible.


Our idea was to use it with Greyborg frames. Greyborg bicycles should be something like Harley motorycles.

I want them so reliable that you will use them for 20-30 years with no failures, and they also must have clean design without too many cables.

That is why we prefer to build Greyborgs with 2 speeds only.


We had no intention to compare our motor with X 5400 products.

X54 have 15 kg, and our motor have 10kg. Those are different categories.


We are building bicycles, not racing motorcycles.


Our supplier can manufacture megamonster motors with 20 or 25 kg, but those motors are intendend to be used in car wheels.

[patrickza]

Need some help picking a rear shock. My local bike shop is trying to rip me off insanely.

Can someone tell me what all I need to buy for the rear shock, and point me to an online store that I can order from. I imagine it's the shock, plus spring, plus bushings. What size bushings does the bike require?

[gensem]

Need some help picking a rear shock. My local bike shop is trying to rip me off insanely.

Can someone tell me what all I need to buy for the rear shock, and point me to an online store that I can order from. I imagine it's the shock, plus spring, plus bushings. What size bushings does the bike require?

Im at work atm patrick, but I can check the shock I have when I reach home.

[HAL9000v2.0]

Bushings are 8mmx30mm and shock from 170-185mm ETE.
Good shocks for reasonable price :Yasusu BNCP401

[gensem]

Bushings are 8mmx30mm and shock from 170-185mm ETE.
Good shocks for reasonable price :Yasusu BNCP401

Are you talking about this Hal?
http://www.yasusu.com/pro_bic02.htm
43 USD, worth trying I guess.

[patrickza]

Bushings are 8mmx30mm and shock from 170-185mm ETE.
Good shocks for reasonable price :Yasusu BNCP401

Thanks HAL and gensem. I'm looking at the bushings now and there are two types with the same measurements. Could you tell me which of these would work:
http://www.chainreactioncycles.com/Mode ... elID=62819
or
http://www.chainreactioncycles.com/Mode ... elID=57750

and also what type of bolt I should buy to connect all the parts.

Apologies for the basic questions, but bike shops around here are useless and only really become interested if you talk about $1000s in business.

[gensem]

I feel your pain, bike shops are utterly useless for me too...
im not sure about the bushings, Hal/Accountant should know the diference.

[HAL9000v2.0]

You need this item
65966 In Stock 30.0mm x 8.0mm

but this is outer dia for manitou shock ONLY! You have to get bushings from shock producer. Each shock have different bushing system.

[HAL9000v2.0]

212199 In Stock 8.0mm x 30.0mm - 14mm
In this item 14mm is eye inner diameter. And you can measure on your shock. But what is missing here the width of the eye. That is also important. I will make few sketches to clear this.