Laprise Board track racer

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1HP   100 mW

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Location: Sherbrooke Québec

Laprise Board track racer

Post by 1HP » Jun 07 2017 6:30am

Hey,
First timer with E-power here.
I am Making a 'vintage race motorcycle' the most authentic i can make it look as possible.
Ive gone with electric cause its basically the only 'legal' way to motorize a bike around here.
I am on a tight budget ,but have too much time so i make what ever i can my self and budget goes for electrical
parts(witch i know very little about) and essential components for the right look or those i can't make or recycle.

the Project started in April by making the 1911 Joe Merkel suspension fork, then the frame ,and now the motor mount.
now that i have a rolling chassis ,things should be more interesting and i feel the need to share the build with you guys witch compose this great forum with tones of creative and useful info and inspiration that already helped me for that project.

build documentations :
http://ratrodbikes.com/forum/index.php? ... tr.102525/

https://www.facebook.com/pg/LSD-Laprise ... 5141505695

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Mac upgraded motor ''geared''
25amp infinion controller
cycle analysis v3
just ordered a 48v 20ah battery kit from maker battery

My set up is basically just relocating the hub motor in the center of the frame to have a better weight distribution, the right look, and have the battery/motor/controller/probably charger all in one single package hidden in the form of a vintage v-twin gas engine.
It also allow me to tune the gear ratio if needed since i plan to top it at 32kmh(legal top speed) to make sure i dont get into trouble with the law ( iknow my self too well ) :roll:
-single speed with disk brake on the motor
-single speed with coaster bake with the pedals
i plan to hide every bit of tech to keep the authentic look :arrow:
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SlowCo   10 kW

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Re: Laprise Board track racer

Post by SlowCo » Jun 07 2017 7:03am

Wow. That's a cool build with very nice design details. I'll be following this thread with interest. :D

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1HP   100 mW

100 mW
Posts: 39
Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jun 07 2017 6:51pm

SlowCo wrote:Wow. That's a cool build with very nice design details. I'll be following this thread with interest. :D
Thanks!
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1HP   100 mW

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Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jun 08 2017 7:00pm

Just a little revision on the top tube :P
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and made a custom fender
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footloose   10 kW

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Re: Laprise Board track racer

Post by footloose » Jun 08 2017 8:50pm

Nice work, looking forward to watching progress.
Central located disk brake is interesting.
Maybe it is common design but new to me.
Seems like it might put lot of stress on "brake driveline" in hard stop?
All the braking force is transmitted to rear wheel by chain?
Anyway thanks for something interesting to think about
in insomniac hours. Have fun with build, going to be an intersting bike.

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1HP   100 mW

100 mW
Posts: 39
Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jun 08 2017 11:31pm

footloose wrote:Nice work, looking forward to watching progress.
Central located disk brake is interesting.
Maybe it is common design but new to me.
Seems like it might put lot of stress on "brake driveline" in hard stop?
All the braking force is transmitted to rear wheel by chain?
Anyway thanks for something interesting to think about
in insomniac hours. Have fun with build, going to be an intersting bike.
thank you , never seen it before ether , sure its not the safest brake setup ever , but combined with the coaster brake and driving wisely it should work fine , my thought was using the coaster brake for stoping and disk for aditional help or on downhills whne the coaster would heat up and degrade..
time will tell haha
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1HP   100 mW

100 mW
Posts: 39
Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jun 15 2017 12:05am

Sarted making the storage/faux gas tank
Making the shape to build a mold to make it in fiber glass.
step by step Images overload:

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macribs   1 GW

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Re: Laprise Board track racer

Post by macribs » Jun 17 2017 4:24am

Welcome to the forum. That is an impressing first build you got going there. Look forward to watch the build complete.

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agniusm   10 MW

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Re: Laprise Board track racer

Post by agniusm » Jun 21 2017 1:46pm

Yes, wow. Not many quality scratch builds these days. Very sexy

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1HP   100 mW

100 mW
Posts: 39
Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jun 26 2017 11:00am

aluminum foil over the foam
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fiberglass over that with wood reinforcements
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a little bondo fix , then primed and no-stick spray
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battery in progress (not finished) connections were doubled with copper wires = (6p 13s) = (48v 20ah)
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all wrapped and working properly :mrgreen:
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overall look .. the tanks came out of the mold slightly out of shape , tried to straight it by holding it in a jig and add fiber bondo , but now its heavy thicker than i wanted and still slightly off, the no-stick spray did not work so i had to cut the mold open so cant use it anymore... i am now considering scrapping all of it and try to make one in sheet metal... oh well , its only a storage compartment , so its not needed to run the bike
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first test , first time i feel electric power on a bike
POWWWER!!! lots of torque , says 34kmh on the display witch is what a Mac8T with 28t /32t was estimated , but its not accuratly set up yet , just a system check :D

video of test here , cant figure out how to display the video in the post
https://www.facebook.com/82906264722894 ... 724494836/ :lol:
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1HP   100 mW

100 mW
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Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 03 2017 9:10pm

Made my battery case and mounting

Started with a aluminum plate i shaped , bent , drilled and tap to hold threaded stainless rods at 40degre to support the battery
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then fitted the smallest diameter tube i could fit over it = 3,5''ID could only find that in card board craft packing tube
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then found a drain pipe pvc fitting that fittted perfect over it and had a nice shape , then a other random piece on top that i turned on my wood lathe and press fit and glued
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then decided to melt some grooves in the pvc with a rod to make it look more like a vintage piston head
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then made a center plate to cover the cables
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then used a old pvc fitting i had laying around for years to make a exhaust port / cable exit
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this peice of card board was added to cover the slots i made to clear the corner of the BMS thats sticks out more than the reste , later sanded the edges smooth , and every cardboard was brushed with wood glue inside and out to stiffen it , make it a little bit more water proof ,and seal it for paint
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then made top cover plates in sheet metal and welded a support witch witch tripples as added safety lock for the battery and a handle to carry the battery :D
i threaded holes in the center of the base plate and center plate to use lamp fittings to hold the plate and passthrough the mounting bolts
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i like this little knob i kept in my recycle hardware collection haha , looks like its making me a wink :wink: but its a (lock/unlock knob) witch is exactly how i use it , it will only be accessible from inside the key-locked faux-tank
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pretty satisfied , but i really wished i had access to a lathe and milling to make the cylinders in 1piece of aluminum with fins .. maybe in the future if iam lucky
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just need to mount the controller and make a seat and ill be able to test ride the thing :mrgreen:
Last edited by 1HP on Jul 03 2017 9:40pm, edited 1 time in total.
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spinningmagnets   100 GW

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Re: Laprise Board track racer

Post by spinningmagnets » Jul 03 2017 9:15pm

Wonderful project, with lots of fun and innovative features. Well done!

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1HP   100 mW

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Posts: 39
Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 03 2017 11:21pm

spinningmagnets wrote:Wonderful project, with lots of fun and innovative features. Well done!
thanks! lots of fun yes, cause its not work to me , iam always having a kick at tinkering on stuff and make the most of what i have at hand :mrgreen:
why make it simple haha :lol: , really want that nostalgic look and its a good mental exercise to think of how to make something look like something else but still function well, as (?) said ''necessity is the mother of all inventions'' :P
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SlowCo   10 kW

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Re: Laprise Board track racer

Post by SlowCo » Jul 05 2017 2:52am

Your bike is turning out gorgeous! Great to see it being built up and can't wait to see the end result.

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1HP   100 mW

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Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 08 2017 10:53am

Seat makeover
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shaped the plastic pan a little bit better with heat
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dollar store yoga mat for padding
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found a great place for all sorts of genuine leather , this one pre-stained and oil finished , perfect for that authentic look
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the rails were sticking out too much for my taste
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so i cut them off the spring support , cleaned everything , and welded it back more compact , then sealed with a clear coat
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I pre-drilled Many holes with my dremel and laced it
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just need to finish the edges and a sealent .
turned out great imo for a fist time working with real leather :mrgreen:
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999zip999   100 GW

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Re: Laprise Board track racer

Post by 999zip999 » Jul 11 2017 10:09pm

Amazing

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1HP   100 mW

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Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 12 2017 1:02pm

i tested the bike the other day and was surprized i miss calculated the gear ration , it goes at least 40kmh , man that feeling was amazing :lol:

but now back to reality , tried to charge it and had some problems , asked on the facebook page and got help, but still not sure if its bms/charger/or battery related , i ordered a new charger cause i think its the cause , ill soon find out ..

in the mean time a friend gave me a nice vintage crank 46tooth 152mm arms and iam waiting on the ordered bottombracket , a offset 127.5mm and ill still have to use 1 or 2 spacers to clear the motor cover.

since i openned the battery case , i found out the 8rods were comming loose, so i got new ones (bigger) 1/4-20 and did not spare on the lock tight.

while i wait for parts to arrive i may be redoing the tank , still questioning if its worth retrying with fiberglass or go with steel
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1HP   100 mW

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Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 12 2017 2:22pm

SlowCo wrote:Your bike is turning out gorgeous! Great to see it being built up and can't wait to see the end result.
999zip999 wrote:Amazing
Thank you guys :)
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Sean9002   1 kW

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Re: Laprise Board track racer

Post by Sean9002 » Jul 12 2017 5:16pm

Coming along really nicely mate! I bet your sick of Dremmeling really small holes though :lol:
Leather work will be the next skill i learn for sure.
OSET 20+ - Custom frame and swingarm, Motorims - 66V
Ruff Cycles Porucho - MXUS 3000w - whitewalls - Gloss black/Pearl blue/copper leaf - custom tanks - bobber saddle
Giant Glory 00 - Clyte X5404 - Hubsinks - 18FET Sinewave
Fuji Nevada S - MXUS 35mm- Hubsinks - 12FET Sinewave
39inch longboard Dual 50mm, 12s lipo

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1HP   100 mW

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Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 12 2017 11:56pm

Sean9002 wrote:Coming along really nicely mate! I bet your sick of Dremmeling really small holes though :lol:
Leather work will be the next skill i learn for sure.
yes , took about 1h juste for that , but did everything in 2days in about 6h while watching tv , so not that bad , drilling holes was def the painful part
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1HP   100 mW

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Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 12 2017 11:58pm

test ride tonight 8)
got a crank on finally
https://www.facebook.com/82906264722894 ... 396460502/
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1HP   100 mW

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Posts: 39
Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 20 2017 6:28am

Take 2 at making a fiberglass storage tank.
insulation foam
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spray adhesive and wrapped in cellophane,
reinforcement wood at the bottom and thicker ridges to stiff things up,
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2-3 layers on glass
fiber bondo
bondo
primer
much sanding in between each
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now that it looks so perfect , ill be cutting it in half , empty the foam , mount it and hinge one side
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Sean9002   1 kW

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Re: Laprise Board track racer

Post by Sean9002 » Jul 20 2017 5:33pm

Great detail work! I cant wait to get my cruiser out this summer.....youve inspired me to build a new tank :lol:
OSET 20+ - Custom frame and swingarm, Motorims - 66V
Ruff Cycles Porucho - MXUS 3000w - whitewalls - Gloss black/Pearl blue/copper leaf - custom tanks - bobber saddle
Giant Glory 00 - Clyte X5404 - Hubsinks - 18FET Sinewave
Fuji Nevada S - MXUS 35mm- Hubsinks - 12FET Sinewave
39inch longboard Dual 50mm, 12s lipo

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1HP   100 mW

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Joined: Apr 09 2017 8:19am
Location: Sherbrooke Québec

Re: Laprise Board track racer

Post by 1HP » Jul 23 2017 11:19pm

tank split , foam removed , success this time ! :mrgreen:
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my innitial idea was to just trow the cycle analist in the box to not see it/affect the look ,but after thought i want ease acces to it and see how much juice i have left , so i thought of flush mounting it in the tank
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no risk , no reward , dremmel on the CA :twisted:
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oh yeah!
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after epoxy resin everything , a small amount of bondo , sanding and primer
Boom! flush mounted CA 8)
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will make a sealed cover for the CA and all the wires
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also added the 3speed switch( removed from the handle bar clamp)
a electronic key lock and quick on-off switch ease of reach
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still waiting on my key lock latch i ordered to keep the hinged right half of the tank closed
(will take pics of how i mounted the tank halfs)
I also drilled the bars to pass the throttle cable trough it
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also waiting on : drop stand -wide offset BB -bigger 40t sprocket - vintage pedals
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SlowCo   10 kW

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Re: Laprise Board track racer

Post by SlowCo » Jul 24 2017 7:33am

Wow! Fantastic result 8)

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