| Author |
 Topic  |
|
|
burnoutboy
New Member
New Zealand
4 Posts |
 Posted - May 27 2006 : 5:29:32 PM
|
Right, just to make sure.
I have removed the governor. Is this correct? I believe it is but I just want to be on the safe side as I have never removed a governor on a briggs.
I first shaved that white flap thing off:
Then removed all associated governor linkages leaving just the carb butterfly:
Is there anything else I have to do? I would hate for this thing to explode in my face. Also keep in mind, this is going direct drive on a kids bike (side mount spindle) and I'll be restricting the throttle so that alimiuim flywheel does not explode..
Also, I realise the blades act as rotating mass for that engine. However, seeing as I am using a direct drive setup, wouldn't the weight of the spindle and wheel e.t.c compensate for that??
Also, when I first got it, it had no compression. This was due to the head not being properly on, and carbon everywhere. I cleaned all the carbon out, replaced the headgasket and torqued the headbolts down correctly. I have a nice blue spark, but when I go to start it, I get a nice blue flame out of the carb. I understand this is fuel related, but as this is my first time working on a briggs, I am unsure of what to do..
Thanks for the help.
Cheers.
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 29 2006 : 09:02:33 AM
|
Yes, that is how the governor is removed. I would never do such a thing on a kids bike, especially with direct drive. Kids do all kinds of crazy things like rev the engine with the wheel off the ground, drive down hills, etc. Also direct drive is VERY unsafe...
Anyway, you are getting backfire out the carb due to an ignition problem. Replace the points/condenser set. The problem is just the condenser but there's no point replacing just the condenser....
|
 |
|
|
burnoutboy
New Member
New Zealand
4 Posts |
Posted - May 30 2006 : 12:09:17 AM
|
Yeah, I just went and checked out the bike. The motor is way too large. However I have an idea about rebuilding a Go-Kart I built ( www.freewebs.com/burnoutboy ) using the engine. Pretty much the only think I would re use would be the design and wheels.
I also have been designing a crude but cheap manual clutch system, where the engine is mounted on a pivot, when a clutch pedal is pressed this remooves the engines shaft from the wheel so no power transfer will happen when the clutch is disengaged.Does this sound good enough?
You say that revving the engine is crazy. How much revs can I safely do (as in no risk of the flywheel blowing or the rod going into orbit..)
Also, no kids will be driving this...
I like the gokart on your home page. In your opinion was the briggs powerful enough for the kart??
Cheers.
|
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - May 30 2006 : 09:19:46 AM
|
That's a good start on the go-kart. Those wheels look seriously beefy.
I don't know what the limits are exactly on a stock B+S lawnmower engine but I keep hearing of around 5000 RPM. I guess the worst case is that you go higher and blow it up. 
I've tried that clutch arrangement before and it does work, but not very well. It's murder on the belt so they wear very quickly.
The engine on my go-kart is apparently 2-2.5HP, and it was enough to maintain a high cruising speed (higher then I was willing to go on a continual basis). Acceleration was not the greatest, however.
|
|
|
|
burnoutboy
New Member
New Zealand
4 Posts |
Posted - Jun 07 2006 : 04:56:20 AM
|
Well I chucked the engine back out. I ruined the pullstart mechanism when pulling it. Was quoted $100 for a new one...
But I have a new powerplant:
It is a 50cc 2 speed auto moped engine. I replaced the rings and gaskets last weekend (only cost me $10 for the both of them from a local shop).
How would this do for a engine?
Cheers.
|
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 07 2006 : 09:29:18 AM
|
$100?!?! I have like 10 of those in the back of my garage. Last time I actually bought one the shop charged me $5 for a used one that needed a new spring (another $8). Anyway...
Looks like a good engine, lots of fun. Nowhere near the torque of the B+S though.
|
|
|
|
guitarfreak
Apprentece
New Zealand
6 Posts |
Posted - Jun 07 2006 : 9:28:53 PM
|
Burnoutboy, wazzup?
$100 for a starter does seem to be a bit too much, i got a whole lawnmower for $50. Anyway, you could have bump-started it or something.
Save the trees,eat a beaver :-) |
|
|
| |
Topic |
|
Vertical B&S questions.
