customized mini bike i guess

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david a luciani

New Member
#1
#1
hi guys,
normally i'd have never gotten involved in a custom mini bike build.
but a buddy on another forum egged me on a little.
since it is a minibike and i am a member here i guess it's ok to post what i'm doing.
i'm not to well versed in minibikes i've never built one before.
i have built a few harleys and it kinda is the direction this bike will take.
mostly because i have piles of parts for harley bikes just lying around.


it's kinda a build off between three friends with a finish date of april 1st.
since one of the guys is a joker that may be his idea of something to do for april fools day.
but i'm having fun so who cares.

these pix on the slide show are so far in this build.
i started about three weeks ago.
hope you like it.
Mini Bike Project Slideshow by drottoconndave | Photobucket
dave
this is my "design" it's on a file card:shrug:


pile o parts
 
Inventorpardue

Inventorpardue

Member
#2
#2
Looks like you have really got that going, from building a swingarm to fabbing motor mounts. That engine seems familiar, but that Dyna Drive is different. Later it has a larger cover. What setup is that? Its looking good, you have some great parts there. Unique!
 
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david a luciani

New Member
#3
#3
thanx for the kind comments.

the dyna drive were always that same size.
margay also made a gear box only alot bigger.
that may be what you're recalling.
i originally was using a margay box but it was to big both in fit and proportionally.

the motor currently is gonna be a mcculloch mc49 built from go kart and saw parts.
it boost ported and has a modified exhaust.
if i think it's too slow i'll be upgrading to a mc91 but i doubt i'll go there.

the gearbox currently will run a 4.61 gear which should make the output slow enough to run a 4 stroke clutch.
i'm going for a high winding motor with alot of torque.

i just was by a new friends house he'll be machining me a few parts.
my backround in racing karts has inspired me to create a minibike gear carrier so i can switch the wheel gear easily.
he's also lathe cutting me the drive axle and fabbing a disk carrier for the brakes.
i haven't decided front or rear for the brakes if front it'll be to unclutter the back.

the current engine mount may end up cut out of 1/4" thick aluminum if it's available in the scrap bin.
i finally found my big tube gas tank that i may use instead of the red one.

no pix today was a long night of no visible progress.
cut steel went to machinists house ect ect.
accidentally left my co2 tank on so now i gotta get more gas tomorrow.
hate wasting $$$ on senile old forgetfulness that's creeping up on me more every year.

D
 
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david a luciani

New Member
#5
#5
thanx for the offer of help i may need it when the guys in the white coats come to get me!!!

right now a full bottle of argon/co2 mix would be nice:wink:
i left the stupid valve open am shut down till monday with welding.
one of these days i should maybe try to stop by your house and visit too.

are you gonna go to the april 5 cuddebackville minibike playday??
i'll be there for sure with this project i hope.
regardless will be bringing some karts to just to mix it up.
dave
 
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david a luciani

New Member
#6
#6
pix are here.
the first two are of the rear fork/swing arm.
they are as far as i can go till i get the parts back from the machinist.

slots are cut for adjusters


heres a quick mock up with shock


heres bicycle front forks. the fat one has a threaded plug i needed the skinny one was just something i kept didn't really know why till later.


new to me front forks. they fit good in the bicycle neck i scrounged up.


next i'll be cutting the tube to fit. neat part about narrowing the triple tree is i got almost two extra inches of fork length.


close up of the roached threads.
don't care i'm using a threaded plug and bolt to hold it together instead.



neck chopped off frame. the bmx frame was really nice. i almost went on net to figure out it's value.but decided who cares it was free to me picked outta the town recycling.


the victim er i mean frame to be modified.



i added a piece of angle iron to help support the new neck tube.
welding it in place as the other one was seemed too boring.
i changed the rake ALOT blew off the math went with looks cool.

a little plate i was cutting down to bridge the bottom


i make FUGLY welds but they are usually pretty solid






new neck tacked into place. i'll wait till it's a roller before i finish neck never know the rake might need to be changed a little.
that's all the pix.
time for a little sleep.
dave
 
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