Kona stinky Delux mod. build questions!

[Stonebay Productions]

Hello all !
So first things first ! Sorry for a long and boring post ! hope i managed to set it up clean and with out to much jib jab !

As this is my first post i will do a quick little introduction !


I am Norwegian youth that always has had a passion for creating stuff !
The last years i have done alot of multirotors, or drones if you like, and rc planes.
So I have a understandig of basic electronics from there. I am working on a "large" (70m) fishing boat and are able to use the shope onboard to do the jobb in.
That being said : This wont be done in a week or two ! I am not yet sure if i dare to modify my lovely DH bike !


So lets go down to business !

I hope to have a rather hefty Stinky when done ! My main inspiration was the LMX builds ! They are so awsome ! aand from there the ideas started to come...
So all of a suddenly i had bought a rather hefty rc motor !
http://shop.smallsize.no/product_info.php?cPath=15_60&products_id=16441&osCsid=4197739c52ee2ba6fa2bf16ac7198b0b
and a hefty ESC !
http://shop.smallsize.no/product_info.php?cPath=15_32&products_id=16346&osCsid=4197739c52ee2ba6fa2bf16ac7198b0b

Q: What i find quit annoying is that it doesent say how many amps the motor can handle !?
@14s lipo 58,8V= 6150W/58,8V=104.6A
@6s lipo 25,2V= 6150W/25,2V=244.0A
so a little help there ?
from what i remember i think the seller said that i could handle 120 amp.


My plan of action is too :
- First do the research.
- Buy in neasasery parts
- Building
- Riding and be awsome on an (hopefully) awsome bike !


------------------------R E A S E A R C H --------------------------

The plan :
the motor wil be mounted "inside" the frame. It will stand length wise. Then the worm will be mounted on the motor. This would cause the shaft to change direction 90 degrees. When you see the bike from above, the shaft from the worm gear will come out on the left side. From there the plan was to use belt drive down to the crank. Then i will have all the gears on the cassette as a normal bike, wich would hopefully give me both torque and high speed !!
Understandable?



What i have done for now is this:

the calculation in a Excel sheet
//www.dropbox.com/s/wnswushce9d1qu6/Gears%20and%20speed%20calculation.xlsx?dl=0


The parts that i have found :

-a fuse (thoughts ?)
http://www.ebay.com/itm/120-Amp-In-Line-Circuit-Breaker-Stereo-Audio-Car-RV-120A-120AMP-Fuse-12V-24V-32V-/281519200504?pt=LH_DefaultDomain_0&hash=item418bda18f8

- worm
http://info.maedler.de/Article/32242800

-and worm gear
http://info.maedler.de/Article/32232800

For the motor and down to the cranck on the left side i thought to improvise one of these on there (just 1:1) :
-http://info.maedler.de/product/1643/1616/996/zahnriemenraeder-at5-fuer-riemenbreite-25-mm

My bike is this one :
http://www.pinkbike.com/news/Kona-Stinky-Deluxe-Review-2007.html

 

[amberwolf]

I am not yet sure if i dare to modify my lovely DH bike !

This is a quandary I see now and then. It's a generally "simple" choice:

If you have a bike you love *as a pedal bike*, leave it alone and build a new one, using a bike specifically chosen to work with the stuff you want it to do *and* the stuff you want to convert it with, *and* is comfortable for you to ride for the length of time you need to in the ways you want to.

Cuz it probably won't ride like it did before once converted, and you may regret the conversion if you still want to have a pedal-only bike.

If you don't *want* a pedal only bike at all, then go ahead and convert it *if* the stuff you want to use on it (and use it for) is compatible with it, etc.

 

[BSATOM]

Those Kona Stinky bikes look awesome with that 4 link rear suspension. Great high performance ebike platform.
Is that motor the one with 170 rpm per volt and runs on 20 to 50 volts? That is 3500 to 8500 rpm range. Do you really want the sound of a drone throttling up between your legs? That worm drive might make just as much noise as a propeller does. I also question the brass worm drive gear. Will it survive under the full throttle load of a 20-30kg bike and that powerful of a motor (even bathed in oil)?
I actually looked at these high rpm hobby motors, and many others. I myself decided not to try and apply them to bicycle use due to the specifications not being ideal for bikes.
Don't let me discourage you though. See my signature below.
Here are the motor specs from an Australian site.


Model: C8085/08 - equivalent to 50cc>
Voltage Range: 6-14cells Li-Po
Kv(Rpm/V): 170
Weight: 1400g
Resistance (MΩ): 37
Idle current: 12.6A
Wire winds: 8
Power: 6150W
ESC requirement: 120A
Propeller suggestion: 28x12E