Bairdco Built For Speed Bike...

[GearNut]

Now why am I envisioning Frankenstein-esque weld scars all over it?
Reinforcing webbing or plates at key points, skid plates, crash sliders, ect.
A sort of Mad Max theme.

 

[bajaracer1]

baird, how do you think the expansion pipe will make the bike feel? will it have a bogged down feeling until it hits the power band and then it will really start to pull? is that how these engine react to expansion pipes?

 

[bairdco]

honestly, i don't know.

the only expansion chambers i've used before are the SBP pipes, and i think they're too small for a heavily modified engine. i could feel the power band coming on at higher rpms, but i never felt any increase in power over some of the other pipes i built, from my insanely loud megaphone to the modified stock pipe with a supertrapp tip.

the chamber just seemed to lean my bike out to the point of destruction.

with this bigger pipe, i plan to run "seat of the pants" type tests on it, as well as gps runs to compare it to other pipes i've made.

i personally don't think an expansion chamber gives the giant boost everyone expects them to, or claims they do. maybe the arrow guys got the right set up, but i never used one..

i'll let you guys know if it works...

 

[scotto-]

It's all about port timing and a properly built expansion chamber for a specific engine will bring the engine to life. You can tune them (build them) specifically for top-end (high rpm power) or for low-end (lower rpm torque) if you know what you're doing.

 

[16v4nrbrgr]

Its harmonics like the boost bottle, they're legit but there are some volume calcs.

 

[bajaracer1]

ok well let us know how that pipe feels once you install it.

 

[bairdco]

Now why am I envisioning Frankenstein-esque weld scars all over it?

i just call that "welding."

 

[glennbo]

biardco i was reading how you are using alan bolts for the cylinder and head thats a great idea!! i need to replace my cheapo 6mm studs, could you please tell me how long the bolts are that you used! also that enpansion chamber looks pretty cool.
thanks glennbo

 

[bajaracer1]

hey what do you guys think of these expansion pipes? has anyone here used them?
http://www.ebay.com/itm/80cc-bicycl...Cycling_Parts_Accessories&hash=item257a90daff

 

[bairdco]

glennbo, i'm using a different head that's a lot thicker than stock, so the bolts i have wouldn't fit yours.

i got them at McFadden-Dale industrial hardware. i get all my hardware there for pennies. it costs about a buck to replace all the stock hardware on a china motor with allen heads.

they give you a 25% discount if you buy boxes of 100, so for about 5 bucks you can have enough bolts for 50 bikes.

i don't even remember the exact size. i just used a spoke to measure how long i needed, marked it, and brought it with me to get bolts.

 

[moonerdizzle]

That head looks perfect on that motor, and im liking the modified clutch arm.

 

[dmb]

baird the cylinder is on backwards whats the deal??

 

[2door]

baird the cylinder is on backwards whats the deal??

Shhhhhh. Baird is a little dyslexic but we don't talk about that around him. He's sensitive about it

Tom

 

[buba]

baird looks good

i hope you found a ride for the beach cruise tomorrow-- march 3rd
washington blvd.at the beach parking lot 10 am gather ride out 10:30 should be over
40 bikers showing up to ride fast and slow

ride safe

 

[culvercityclassic]

I will meet you buba at the shack.... See ya... And tell to bring some fast bikes lol

 

[bairdco]

here's the progress i made before my crash...

tank's done and sealed with Caswell epoxy sealer, just needs a petcock.

engine and 28t sprocket are mounted, and the "finish" is coming along nicely.

not gonna get any work done on it for a coupla weeks till i can move around, but it shouldn't take long to get it all hooked up.

 

[headtrama]

Come on Baird, you can't mention a crash without telling the story. The bike looks cool to by the way.

 

[unknownbmxa88]

theres a chemical process you can use to instantly rust it. its a combination of muratic acid and hrydrogen peroxide. you can get a life time supply for like 15$ at a hardware store...

look it up on google. i got some from a friend thats was premixed..

i think you want like 5% acid and let it sit for like 30 seconds then hit it with the peroxide. and repeat, then flat matte over the top

its what i used to patina bikes i built.

http://motorbicycling.com/showthread.php?p=468090

 

[scotto-]

Are you gonna race that Speed Bike bro? Just had to ask knowing that you'll prolly say no. Bikes gotta cool look, got the look of a Ram with the reverse brake levers.

 

[bairdco]

it's not set up for the track. it's gonna be a street racer.

with the bars, it has more of a cruiser feel to it instead of a low track racer.

mostly, i just want a road warrior look...