NEW FAST LOWRACER RECUMBENT

LOWRACER · Aug 16, 2010

A new fast lowracer recumbent trike coming soon!

Should I need a BLDC motor or not, that's the real question.....
Additional another problem with the weight and the place of batteries.

[youtube]HnprE3hhWHA[/youtube]

jmygann · Aug 16, 2010

what is the gearing ? front # teeth ? rear # teeth ?

chvidgov.bc.ca · Aug 17, 2010

Holy ground effect Batman!

LOWRACER · Aug 17, 2010

jmygann said:
what is the gearing ? front # teeth ? rear # teeth ?

Front chainring 83teeth to rear 11teeth(7th speed) and rear 34teeth(1st speed).

torker · Aug 17, 2010

Awesome ! Save some room behind the seat for Lipo ! Either side of the frame= Lipopods :lol: More pics please - looks fast..

LOWRACER · Aug 17, 2010

torker said:
Awesome ! Save some room behind the seat for Lipo ! Either side of the frame= Lipopods :lol: More pics please - looks fast..

I will try to make a test ride without an electric assistance. If that works well, so the calculated speed is about 50-55Km/h.....
New video coming soon! ....

def215 · Aug 17, 2010

your work still amazes me lowracer. i also saw the video of the kokam pack that you were building in my youtube subscriptions. will that make its way on this project somehow?

LOWRACER · Aug 18, 2010

def215 said:
your work still amazes me lowracer. i also saw the video of the kokam pack that you were building in my youtube subscriptions. will that make its way on this project somehow?

Yes, a brand new batterie pack with 20pcs Kokam 4500mAh. My destination 37V and 27Ah, so the result 1000Wh and 66C.
This batterie is a specially created for the Lowracer hybrid bike.

Here the video again:
[youtube]U3SAFnheRJo[/youtube]

D-Man · Aug 19, 2010

I'm on dial-up. Can't see any video's. Pictures only.

LOWRACER · Aug 20, 2010

D-Man said:
I'm on dial-up. Can't see any video's. Pictures only.

Click the video link and select into the settings "240p"!

thedarlington · Aug 20, 2010

that thing is awesome, how did u get that insane chain ring did u custom make it? so starting from 1st gear in the rear, is it easy to start pedaling without assist? how easy is it to cruise at that type of ratio when youre on your highest gear?

AussieJester · Aug 20, 2010

thedarlington said:
that thing is awesome, how did u get that insane chain ring did u custom make it?

Pretty sure it is the one he made by hand from a saw blade?

KiM

boostjuice · Aug 20, 2010

AussieJester said:
thedarlington said:

that thing is awesome, how did u get that insane chain ring did u custom make it?

Click to expand...

Pretty sure it is the one he made by hand from a saw blade?

KiM

Looks like it.
http://www.youtube.com/v/cOZ-_ClKRmg&hl=en&fs=1&

I particularly like this one :lol: :lol: :lol: >>>http://www.youtube.com/v/-8V9MF2HzkE&hl=en&fs=1

http://www.chrisy.crazy.lu/

veloman · Aug 22, 2010

Looks like what I've wanted to build for a while. How hard is it to get the headset placed correctly and welded in?

thedarlington · Aug 22, 2010

oh man i gotta try that! some chainrings are just retarded expensive, seen some even go for +$100 thats quite an original build u got there very ingenious solution

LOWRACER · Aug 23, 2010

thedarlington said:
oh man i gotta try that! some chainrings are just retarded expensive, seen some even go for +$100 thats quite an original build u got there very ingenious solution

It's not easy! But make a try..... I made my chainring in about 3hours.
I ask a firm for a laser cut chainring, the price is very hot, about 600Ã¢â€šÂ¬.
Ok, I understand to create a new CNC programm, the design and the settings of cut machine and so on.....

AussieJester · Aug 23, 2010

Quick question LowRacer...how are you calculating the circumference of the saw blade so when
marking the teeth out you have the correct spacing all the way round? Is this a lil bit of trial and error?
Cut the circle mark the teeth see how it comes out if its not right cut a lil more off ?

Excellent job BTW, very impressive!

KiM

thedarlington · Aug 23, 2010

hey kim check this out, damm i had just seen this software n now i couldnt find it, but finally did, u specify teeth measures etc, and it gives u a printable pattern that you can then overlay and trace on metal

http://www.ozhpv.org.au/resources/shed/sprocket.html

also found this stuff but not really sure what it means, sheldon brown has some similar stuff, i think to like calculate mph to ring size

http://www.machinehead-software.co.uk/
http://www.kinetics.org.uk/html/k_gear.html

AussieJester · Aug 23, 2010

Cheers mate that software is fantastic! have saved me a copy of that one!

KiM

LOWRACER · Aug 25, 2010

OK, it's finsihed!

Here again a little step-by-step video:

[youtube]0_NgdsGjabA[/youtube]

LOWRACER · Aug 25, 2010

AussieJester said:
Quick question LowRacer...how are you calculating the circumference of the saw blade so when
marking the teeth out you have the correct spacing all the way round? Is this a lil bit of trial and error?
Cut the circle mark the teeth see how it comes out if its not right cut a lil more off ?

Excellent job BTW, very impressive!

KiM

You don't need to calculate the circumference, if you calculate you lose!!!
You take a NEW CHAINRING and sign the every teeth....
You can see that in the video where I've created
the 99teeth chainring!
Of course my favorite material is chrome-vanadium, so I'd never to change that chainring!

AussieJester · Aug 25, 2010

LOWRACER said:
AussieJester said:

Quick question LowRacer...how are you calculating the circumference of the saw blade so when
marking the teeth out you have the correct spacing all the way round? Is this a lil bit of trial and error?
Cut the circle mark the teeth see how it comes out if its not right cut a lil more off ?

Excellent job BTW, very impressive!

KiM

Click to expand...

You don't need to calculate the circumference, if you calculate you lose!!!
You take a NEW CHAINRING and sign the every teeth....
You can see that in the video where I've created
the 99teeth chainring!
Of course my favorite material is chrome-vanadium, so I'd never to change that chainring!

Sorry, no idea what your trying to say here mate, i have watched the video of you making the chain ring
several times, it shows nothing on how you workout what size disk to cut BEFORE you mark the teeth on, if i cut a
random circumference disk and then lay a new chain sprocket on it marking teeth all the way around
its hit or miss if you have the correct spacing when your marked teeth are drawn around the disk and come to
meet at the start point. If i ever make a chain ring, ill stick with the software it ensures the correct
size disk is cut in order to have the correct spacing for ALL the teeth..

KiM

Miles · Aug 26, 2010

Kim,

The pitch diameter is:

Pitch diameter = Pitch / sin (pi / number of teeth).

AussieJester · Aug 26, 2010

LOL thanks Miles, i have no idea what anything after 'Pitch diameter = Pitch' means though :lol: ..

I'll stick with the softwar just need to type in the number of
teeth you want on your sprocket & it makes you a printable scale
pattern to stick to your metal 'disk' ... tiz my kind of easy :wink:

KiM

LOWRACER · Sep 7, 2010

AussieJester said:
LOL thanks Miles, i have no idea what anything after 'Pitch diameter = Pitch' means though :lol: ..

I'll stick with the softwar just need to type in the number of
teeth you want on your sprocket & it makes you a printable scale
pattern to stick to your metal 'disk' ... tiz my kind of easy :wink:

KiM

Hi, check this out:
[youtube]opJyWmkrJ3Q[/youtube]

NEW FAST LOWRACER RECUMBENT

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