Starting new Mini-Buggy project

[theo]

If you are going to run any amount of hp through that center shaft you will have to step up to a 6 spline 1 3/8" shaft.

 

[fowler]

u talking about the edge shaft ?

thats exactly what this is

put a zx9 though it and the cvs will snap first

 

[wingnut]

That setup from Edge is nice but spendy. I was thinking that you could build a budget version from tractor parts. For instance you can get a shaft from these guys:

http://www.surpluscenter.com/item.asp?item=1-2938-6&catname=powerTrans

Oddly enough, they don't sell a matching hub but you can get one from here:

http://www.tractorsupply.com/agricu...hains/hubs/w-series-hub-1-3-8-in-bore-1170549

The only part missing is the flange with matching holes for the CV bearing. That should be the cheapest part to get made at your local machine shop. Weld the hub into the flange then drill and tap a hole in the ends of the shaft to hold it all together.

 

[frankMFG]

Well this is certainly complicated for a 15 year old LOL but i have PTO shafts coming out my ears from all the farm machinery sitting around, and one of my best friends dad is a machinist! Pays to have connections i guess! Thanks so much to all you guys for all the useful info

 

[fowler]

that is what I thought u would say

 

[frankMFG]

what part of it did you think i would say? lol i got the main idea, and I am advanced at welding for my age. I work for a welder. And i know a machinist. Im in pretty good shape!

 

[fowler]

Quote "I'm pretty stacked in the tool department as i have access to just about everything"

i thought u would find it no trouble

 

[frankMFG]

Yep, i'm fine with that, i'm getting 1.25 OD * 0.120 wall thickness for 2 bucks a foot. I called my machinist, he said it wouldnt be a problem, i just have to pay the material cost plus 15 bucks. I went out and fount a PTO shaft and hub. Progress will probably stop till after this weekend.

 

[fowler]

sweet too easy

at this rate u can afford to put a bit into your engine

 

[frankMFG]

yeah i got a few things laying around that i need to sell, should total up to about 3500 but of course not all that is going to the buggy. Im just using some for good seats, engine, and diamond plate floor! where should i get a street bike engine and what do i need besides carbs and all that? just electronics?

 

[fowler]

id try and buy a wreaked bike

i got a GSZR 600 that came from an insureace company from the states

first off try and geta fuel ingected bike as thatll be better

so
trottle bodies
exhaust header (u will have to make custom exhaust system anyway but u need the flanges that atach the exhaust)
electronics (the whole haness dash and all)
dash (just handy)
air box

if u get a whole bike then wreak it yourself then u get the engine mounts that u can cut outta the frame and weld straight in and i can garuntee u from experiance that saves alot of time and effot

also if i was u i wouldnt get the gszr range as u have to mount them high due to the low sump (or u buy a billet sump)

the gsz750 seems good
or cbr's
the choice is endless

 

[frankMFG]

Found a wrecked CBR 900 near to me. Might buy that for $600.

 

[Rustydog2010]

first off try and geta fuel ingected bike as thatll be better

Mmm, if you have the experience to fix them that is all good and well. For just the home builder, I would recommend a carby engine. They are SOOO simple. No need for an ECU or anything.

I wouldn't run a CB900 though universal joints, you will need CVs.

 

[fowler]

i thinks hes makeing a convertion system like Edge product's

yeah true a carby is easy to fix and much simpler
but the performance is better and u may as well learn how fuel injection works at some stage as all new cars are fuel injected now

although i will admit i dont know if ill ever understand the electronics
"does it work"
"no"
welll its f***ed"

 

[frankMFG]

the engine isn't wrecked just the plastics, i'm all good.

 

[DustinWolfe]

Mmm, if you have the experience to fix them that is all good and well. For just the home builder, I would recommend a carby engine. They are SOOO simple. No need for an ECU or anything.

I wouldn't run a CB900 though universal joints, you will need CVs.

fuel injection is alot simpler than everyone makes it out to be. and alot more maintenance free especially when your talking 4 carbs

 

[Rustydog2010]

fuel injection is alot simpler than everyone makes it out to be. and alot more maintenance free especially when your talking 4 carbs

I would totally disagree. If these engines were to use mechanical pumps, sure they would be sweet, but they don't, they use complex electronics. IMO carburetors are easier to adjust, troubleshoot and rebuild. Compare that to servicing injectors and throttle bodies.

The only benefit of a fuel injection engine, IMO is that they are fuel efficient and produce more torque though the RPM range. They are over complicated if you don't have the capacity to manipulate the computer system.

Maintenance free for a limited time, once they do start to play up there is more to wrong.