Go Back   DIY Go Kart Forum > Building Plans And Advice > Engines & Clutches

Notices

Closed Thread
 
Thread Tools Display Modes
  #1  
Old 06-13-2011, 02:34 PM
redsox985's Avatar
redsox985 redsox985 is offline
Senior Member
 
Join Date: Mar 2010
Location: PA
Posts: 4,092
Thanks: 57
Thanked 208 Times in 187 Posts
Default Horizontal Conversion

Well, this is my first time converting a vertical engine to horizontal, so I decided to stop bumming off of TS's LB thread, and start my own. Before I even get into this, I just found today that our friends have a dead snowblower and dead weed wacker! They offered both to me. I couldn't say yes fast enough.

Anyways, onto this engine. It's a Briggs 190cc. Here's a quick photo timeline of today. I need to get a positive ID on this since I messed up the gaskets when splitting the case open. The carb wasn't in bad shape considering it had no air filter and the air box was blown out. It looks like it backfired and blew a hole in the air box? I was SO happy to see a straight, keyed shaft. It also have 2 half circle key slots in the opposite side. Once I dropped out the motor, which was only held on to the deck by 1 bolt (3 holes though), I nearly threw a party when I saw the PTO.







  #2  
Old 06-13-2011, 03:03 PM
dave1701's Avatar
dave1701 dave1701 is offline
Good for 100,000 Miles
 
Join Date: Mar 2010
Location: MICHIGAN
Posts: 1,069
Thanks: 66
Thanked 51 Times in 35 Posts
Default

What will you do get enough flywheel weight with the blade off?
  #3  
Old 06-13-2011, 03:09 PM
redsox985's Avatar
redsox985 redsox985 is offline
Senior Member
 
Join Date: Mar 2010
Location: PA
Posts: 4,092
Thanks: 57
Thanked 208 Times in 187 Posts
Default

Haven't we said that it's tougher to start, yet starts every time someone proposes running a mower engine without a blade?
  #4  
Old 06-13-2011, 03:14 PM
B man's Avatar
B man B man is offline
Tecumseh FTW!
 
Join Date: Jan 2011
Location: Oliver springs,Tn
Posts: 2,490
Thanks: 32
Thanked 98 Times in 93 Posts
Default

some engines have the problem some don't depends on make and model.
__________________
If it doesn't work......well then its gonna!
  #5  
Old 06-13-2011, 03:19 PM
sexyvicta sexyvicta is offline
Senior Member
 
Join Date: Feb 2011
Posts: 806
Thanks: 5
Thanked 49 Times in 47 Posts
Default

i have started an engine the same as that without the blade hub and blades(still attached to mower)

no probs
  #6  
Old 06-13-2011, 06:27 PM
sideways's Avatar
sideways sideways is offline
Unfinished projects king.
 
Join Date: Feb 2009
Location: Perth, Western Australia
Posts: 1,501
Thanks: 50
Thanked 163 Times in 115 Posts
Default

Just for future reference, pretty much all Briggs mower engines have a 7/8" PTO with a standard key way on one side and 2 woodruff key ways on the other side. It's VERY rare to find something that doesn't have that.

Good luck with the conversion mate, hopefully you'l be able to document it a bit better than me!

I've got an engine exactly the same as that that I was going to convert, it feels like its got some internal problems though. I've got to get off my arse and take it apart...

Thanks

Hayden
  #7  
Old 06-13-2011, 06:32 PM
sexyvicta sexyvicta is offline
Senior Member
 
Join Date: Feb 2011
Posts: 806
Thanks: 5
Thanked 49 Times in 47 Posts
Default

Quote:
Originally Posted by sideways View Post
VERY rare to find something that doesn't have that.
no its not. most engines can come with two or three diff diameters and lengths. Each lawnmower constructor seems to choose a different option to suit their bodies and blade drivers. Have a look at a crankshaft off a briggs victa

i have 3 different crankshafts on my 3 190cc brigs vertical shaft lawnmower engines
  #8  
Old 06-13-2011, 07:20 PM
sideways's Avatar
sideways sideways is offline
Unfinished projects king.
 
Join Date: Feb 2009
Location: Perth, Western Australia
Posts: 1,501
Thanks: 50
Thanked 163 Times in 115 Posts
Default

Quote:
Originally Posted by sexyvicta View Post
no its not. most engines can come with two or three diff diameters and lengths. Each lawnmower constructor seems to choose a different option to suit their bodies and blade drivers. Have a look at a crankshaft off a briggs victa

i have 3 different crankshafts on my 3 190cc brigs vertical shaft lawnmower engines
My Briggs Victas were all 7/8". I've had 4 of those, they had shorter shafts than most though.

I've worked in a small engines shop, pretty much everything is 7/8". Maybe it's an Australian thing.

Thanks

Hayden
  #9  
Old 06-13-2011, 07:39 PM
redsox985's Avatar
redsox985 redsox985 is offline
Senior Member
 
Join Date: Mar 2010
Location: PA
Posts: 4,092
Thanks: 57
Thanked 208 Times in 187 Posts
Default

So, my biggest question is what do I make the dipper from and where do I attach it, besides "to the crank shaft"?

Thanks!
  #10  
Old 06-13-2011, 07:42 PM
Doc Sprocket's Avatar
Doc Sprocket Doc Sprocket is offline
*********
 
Join Date: Jun 2009
Location: Ontario, Canada
Posts: 15,677
Thanks: 723
Thanked 2,202 Times in 1,692 Posts
Default

I'd go with 16ga steel sheet- but that's just me. And attach it to the rod cap via the bolts.

Edit- you can make dummy dippers out of a pop can until you get the size/shape right.
__________________
Treat it as you would an aircraft frame and you should have no problems. -Name Withheld
The Manual- "Just the manufacturer's opinion of how to put this together."- Tim "The Tool Man" Taylor
Put down the wrench, and come out with your hands up!- Me!
Wrench, Wheel, Wreck, Repeat...
  #11  
Old 06-13-2011, 07:48 PM
sideways's Avatar
sideways sideways is offline
Unfinished projects king.
 
Join Date: Feb 2009
Location: Perth, Western Australia
Posts: 1,501
Thanks: 50
Thanked 163 Times in 115 Posts
Default

Quote:
Originally Posted by redsox985 View Post
So, my biggest question is what do I make the dipper from and where do I attach it, besides "to the crank shaft"?

Thanks!
I made mine out of plate steel that was about 2mm thick. I bolted it to the conrod using the rod bolts.

If I stop being lazy today then I might take it apart and get some pics for you.

EDIT: as Toystory says, make mock ones out of tin cans. I made a few mock ones and I'm bloody glad I did. My original thoughts were way off.
  #12  
Old 06-13-2011, 08:17 PM
redsox985's Avatar
redsox985 redsox985 is offline
Senior Member
 
Join Date: Mar 2010
Location: PA
Posts: 4,092
Thanks: 57
Thanked 208 Times in 187 Posts
Default

Ok, now that I know what I'm doing for that, how do I ensure that the cam is in properly and that the timing is correct?
  #13  
Old 06-13-2011, 08:27 PM
sideways's Avatar
sideways sideways is offline
Unfinished projects king.
 
Join Date: Feb 2009
Location: Perth, Western Australia
Posts: 1,501
Thanks: 50
Thanked 163 Times in 115 Posts
Default

Quote:
Originally Posted by redsox985 View Post
Ok, now that I know what I'm doing for that, how do I ensure that the cam is in properly and that the timing is correct?
There's a little dot on the cam gear and another on the crank gear. You make them line up(so the are touching) and that's it.

You shouldn't have to pull the cam out though, I only pulled mine out to clean the bushings it turns in. I didn't even pull the head off when I converted mine.
  #14  
Old 06-13-2011, 08:36 PM
redsox985's Avatar
redsox985 redsox985 is offline
Senior Member
 
Join Date: Mar 2010
Location: PA
Posts: 4,092
Thanks: 57
Thanked 208 Times in 187 Posts
Default

I just wanted to clean it all up cause the old oil was NASTY! Next question, do I need this spring loaded thing? I feel like it needs to come off.

A picture would help, huh?
  #15  
Old 06-13-2011, 08:51 PM
sideways's Avatar
sideways sideways is offline
Unfinished projects king.
 
Join Date: Feb 2009
Location: Perth, Western Australia
Posts: 1,501
Thanks: 50
Thanked 163 Times in 115 Posts
Default

Quote:
Originally Posted by redsox985 View Post
I just wanted to clean it all up cause the old oil was NASTY! Next question, do I need this spring loaded thing? I feel like it needs to come off.
The oil in mine was horrible! The engine was 1979 and I'm pretty sure it'd never had an oil change. The oil that came out of it was more like grease, it was about as thick as cold honey! The whole insides of the engine were just black.

That spring thingy, pictures?

Edit: what is that thing? Fancy kill switch linkage? I vote it needs to go.
  #16  
Old 06-13-2011, 10:02 PM
redsox985's Avatar
redsox985 redsox985 is offline
Senior Member
 
Join Date: Mar 2010
Location: PA
Posts: 4,092
Thanks: 57
Thanked 208 Times in 187 Posts
Default

I have no clue! It presses on the fly wheel and had a wire going to a clip on it. It was connected to the cable that goes to the handle you squeeze to start it. I think the wire some how didn't allow it to start and the whole thing acted like a brake stopping the rotation and not allowing it to start without the handle squeezed. Does anyone know what to do with this wire?

EDIT: Here's the little clamp the wire went to.
  #17  
Old 06-13-2011, 10:20 PM
B man's Avatar
B man B man is offline
Tecumseh FTW!
 
Join Date: Jan 2011
Location: Oliver springs,Tn
Posts: 2,490
Thanks: 32
Thanked 98 Times in 93 Posts
Default

oh yeah it needs to go. its a engine brake. get rid of it and hook up a proper kill switch.
__________________
If it doesn't work......well then its gonna!
  #18  
Old 06-13-2011, 10:27 PM
redsox985's Avatar
redsox985 redsox985 is offline
Senior Member
 
Join Date: Mar 2010
Location: PA
Posts: 4,092
Thanks: 57
Thanked 208 Times in 187 Posts
Default

So, do I need to extend it to a switch and then ground the other lead from the switch to the block?
  #19  
Old 06-13-2011, 10:28 PM
B man's Avatar
B man B man is offline
Tecumseh FTW!
 
Join Date: Jan 2011
Location: Oliver springs,Tn
Posts: 2,490
Thanks: 32
Thanked 98 Times in 93 Posts
Default

yep. also how are you gonna setup throttle?
__________________
If it doesn't work......well then its gonna!
  #20  
Old 06-13-2011, 10:29 PM
robbie robbie is offline
Senior Member
 
Join Date: Apr 2010
Location: Osceola, Missouri
Posts: 857
Thanks: 9
Thanked 76 Times in 56 Posts
Default

The thing with a spring on it is an engine brake. It makes it so you can't run the engine without your hand on the handle bar. Supposedly this makes mowers safer, but what it usually means is that you can't pick up trash and sticks while mowing because you have to keep holding the stupid handle bar.

Take it off and use the cable for your wheel brakes if you can.
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 09:02 AM.