[Kartbuilding] Fwd: Re: question about lawnmower powered wooden go-kart

[Stephen Burke]

-------- Original Message --------
Subject: 	Re: question about lawnmower powered wooden go-kart
Date: 	Mon, 26 Jul 2010 18:42:34 -0400 (EDT)
From: 	Julie Swanson
To: 	Stephen Burke



Attached are some pictures of the drive shaft and pulley. I'm thinking
of going and buying another pulley that doesn't have the thickness this
one does (the knob on one side) but am also thinking I could hacksaw
that off or wait and see what you suggest. I think the drive shaft is
iron or steel, something that rusts has to have iron in it, right? A
magnet sticks to it at any rate.

I was thinking maybe I could cut the knob off the pulley and bolt it on
(or try to find a thinner one w/o the knob; couldn't find one at the
store that size) and then buy a thin drill bit that will drill into
metal and drill at an angle through the pulled and into the drive shaft
and then sink a thin finishing nail or metal pin in there and cut and
file it off flush to the angled V of the pulley. Do you think that would
work, 2 or three little pins like that?

Thanks for taking a look at this.

Jules

----- Original Message -----
From: Stephen Burke
To: Julie Swanson , kartbuilding
Sent: Mon, 26 Jul 2010 17:26:52 -0400 (EDT)
Subject: Re: question about lawnmower powered wooden go-kart




  
  


Hi Jules,



If you could send on a few images of the drive shaft, that would make
things easier.



This 2" flat circle. Is is steel or aluminium?

Could you drill into this 2" flat circle? I take it, that its 2"
diameter. What thickness is it?



If you could email on a few images, I can draw in on them the best way
to attach a pulley.

Also if you could take some images of the pulley wheel you want to
attach I'll be able to explain more.



-steve







On 26/07/2010 20:02, Julie Swanson wrote:

  

My son and I are building a go cart according your websites plans
(we're on drawing 17) and we're having a problem securing pulley wheel
to engine output shaft. The notes given say that the author may be able
to suggest some methods and options (we're hopeful; we've put a lot of
time into this and a snag like this can't stop us now!). Our engine
output shaft is just flat across the bottom, doesnt have anything where
it would make sense to cut a groove or slot in the pulley wheel. Given
that the output shaft is a cylinder with a flat circular base the bolt
that holds the lawnmower blade goes into, we're not sure what we could
do to keep the pulley from spinning independently of the output shaft.

  

Any suggestions as to how we could do this would be greatly
appreciated. I'd send you a picture, but it's really nothing you can't
envision by my saying that the base of the output shaft the pulley
would be bolted to is just a flat circle about 2" in diameter, with a
hole in the center of it that the bolt screws into--nothing else to
describe. The engine is from an old Murray 22" push mower (3.5
horsepower) if that helps; we bought it used ten years ago so it might
be 15+ years old.

  

Thanks,

  

Jules

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