Heymow - Lawnmower Racing Forum

Mower Building / Setup Help => Chassis => Topic started by: George Herrin on December 30, 2006, 06:01:13 pm

Title: TECH TIPS
Post by: George Herrin on December 30, 2006, 06:01:13 pm
Here's another use for the old front rims yu remove and toss when building them racers. Many of the hubs have bearings in the and use the standard 1-3/8 o.d. bearings. So using a saws all cut thru the rim near the center weld as pictured below till it cuts the center hub off.

(http://i48.photobucket.com/albums/f232/GeorgeHerrin/th_cutthrurim-1.jpg) (http://i48.photobucket.com/albums/f232/GeorgeHerrin/cutthrurim-1.jpg)

Here is the center of the wheel after cutting the hub off

(http://i48.photobucket.com/albums/f232/GeorgeHerrin/th_centerhubcutoff.jpg) (http://i48.photobucket.com/albums/f232/GeorgeHerrin/centerhubcutoff.jpg)

here you see this center hub now welded in as used as a steering column bearing support.

(http://i48.photobucket.com/albums/f232/GeorgeHerrin/th_allwiredup.jpg) (http://i48.photobucket.com/albums/f232/GeorgeHerrin/allwiredup.jpg)
Title: RE: TECH TIPS
Post by: Chris on December 30, 2006, 06:03:04 pm
That's a pretty neat trick!!!!
Title: RE: TECH TIPS
Post by: offroadwhatever8 on December 30, 2006, 07:44:37 pm
That's a awsome idea George, i think i will actually do that to my off road mower  :woo:
Title: RE: TECH TIPS
Post by: George Herrin on January 01, 2007, 12:19:28 pm
tech tip number two click on attachement below for BRIGGS TORQUE SPECS
Title: RE: TECH TIPS
Post by: money89tractors on January 01, 2007, 12:36:28 pm
that torque sheet will come in very handy if i ever start to build and engine with high pro parts or for a racing application.

-Phil
Title: RE: TECH TIPS
Post by: mowdak1 on January 01, 2007, 12:43:09 pm
A Few Tech Type Links!


More Torques Specs - Briggs and Others (http://www.small-engines.com/specindex.html)

Locating your Briggs Model Number (http://www.briggsandstratton.com/maint_repair/BS_modeltypecode.pdf)

Briggs Numerical Designation System (http://www.briggsandstratton.com/maint_repair/BS_modeltypecode.pdf)

Video - Location of Model Number (http://www.briggsandstratton.com/videos/vp_modeltypecode4.html)

Briggs Parts Lookup (http://www.jackssmallengines.net/parts.asp)

Briggs Engine Drawings (http://www.tulsaenginewarehouse.com/drawings/)

Sprockets and Chains (http://www.gizmology.net/sprockets.htm)

Belts and Pulleys (http://www.gizmology.net/pulleysbelts.htm)

Torque Conversion Calculator (http://www.srtorque.com/torqcon/tcfp.html)

Compression Calculator (http://www.rosspistons.com/calculator.php)

Title: Re: TECH TIPS
Post by: offroadwhatever8 on January 01, 2007, 05:44:29 pm
Thanks Rocky  :), those web site are helpful
Title: Re: TECH TIPS
Post by: grassthrasher on February 06, 2007, 07:22:29 pm
that is a pretty good idea George
Title: Re: TECH TIPS
Post by: John on February 16, 2007, 01:34:53 pm
those sites are helpful.. especially the pulley 1.. its a great way 2 figure out some stuff that is helpful 2 me... not many others help tho cause i dont have a briggs and stratton but it still helps with about 3 of those sites... :)
Title: Re: TECH TIPS
Post by: eddiehenjr on February 16, 2007, 01:49:12 pm
Now that's being resourceful :lol:  Good idea using as many of your old parts as you can so you don't have to buy all new ones.  Saves money!!
Unfortunately for me, my wheels have bushings :noplease:
Title: Re: TECH TIPS
Post by: nor66 on May 18, 2007, 09:42:50 pm
Heres a tip for anyone running a 700- tranny,  most of you  probably already know this,but for those that don't, The tranny bushing that George sells and talks about in his build is a vital component or you will probably end up with a destroyed tranny like this, oh by the way this is the result of a non points, run till you lose drag race, winner gets a hole hundred dollars (wow) it is not worth it,

(http://i74.photobucket.com/albums/i253/nor66/P5080001.jpg)
THIS IS BEFORE THE DRAG RACE!!!!!

(http://i74.photobucket.com/albums/i253/nor66/P5080002.jpg)
THIS IS AFTER TWO ROUNDS,NOT TO GOOD!!!



Title: Re: TECH TIPS
Post by: sr71mopar on May 18, 2007, 10:03:31 pm
I mounted mine on a 5/16" plate. I'll have to check the size of the bit I used, but it was perfect. I lapped the trans case into the hole, then drilled the mounting holes. This setup has survived much drag race style abuse.
(http://i11.photobucket.com/albums/a191/sr71mopar/th_inputsupport.jpg) (http://i11.photobucket.com/albums/a191/sr71mopar/inputsupport.jpg)
Title: Re: TECH TIPS
Post by: nor66 on May 19, 2007, 07:17:40 am
Oh yea that is a real tight fit and will probably hold up better than mine did, :( I wasn't suggesting that George's bushing is the only way to go but it is very easy to install  ;D and it actually supports the tranny case all the way to the bottom of the case , it really makes for a strong support on the input shaft. but by all means anyone that is going to use this style tranny really needs to support the input shaft in some fashion, I think George said that these input shafts are only designed to take about 12 lbs of torque. :woo:
Title: Re: TECH TIPS
Post by: SeanStanley on June 18, 2007, 09:02:10 am
heres another tech tip
i learned this from racing quads
when performing a leakdown test, pour some oil down the plug, and re-do it
if compression goes up, its a ring job, if it stays the same, its a valve job
Title: Re: TECH TIPS
Post by: KartMan250 on August 15, 2007, 05:44:31 pm
whats the best way to measure the belt you need, and how much do you need to add in for the clutch?
Title: Re: TECH TIPS
Post by: hillbilly1 on August 15, 2007, 05:51:23 pm
Search feature man but anyway here you go.
http://www.heymow.com/index.php/topic,4133.0.html
Title: Re: TECH TIPS
Post by: KartMan250 on August 15, 2007, 09:37:30 pm
thanks
Title: Re: TECH TIPS
Post by: John692 on July 24, 2008, 10:28:00 pm

Easy jack shaft for those who want to run transaxles. This is just a typical front wheel kart hub. Just add high speed ball bearing's. For this one, I have a 6" 3/16" keyed 5/8" shaft from mcmastercar.com. Id recomend adding some gussets if you could though.
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture324.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture324.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture326-1.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture326-1.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture327.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture327.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture328-1.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture328-1.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture329-1.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture329-1.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture330.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture330.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture331.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture331.jpg)


and for my c/p, I bought a 12 tooth flat machinable flat steel sprocket for #40 chain. Had it bored out to 1". Then i took a brake rotor from a transaxle, cut the rotor alway so it was just a 1" OD 5/8" ID splined hub. Sliped it inside the sproket. And got it tig welded useing stainless steel rod.


(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture318.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture318.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture320-1.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture320-1.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture321-1.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture321-1.jpg)
(http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/th_Picture322.jpg) (http://i144.photobucket.com/albums/r162/offroadwhatever8/mowers/Picture322.jpg)

Title: Re: TECH TIPS
Post by: Chris on August 18, 2008, 09:54:29 am
That's a good jackshaft idea John!
Title: Re: TECH TIPS
Post by: flyinBranch on February 17, 2009, 08:33:00 pm
http://www.gizmology.net/pulleysbelts.htm
Title: Re: TECH TIPS
Post by: sparks on February 17, 2009, 09:07:36 pm
poor man sprocket! take the reverce sprocket 700 trans  brake  rotor put in the center of sprocket fits in tight cleen it up weld away it is a 12 tooth, works well i have run mine for two years  poor man sproket!spark
Title: Re: TECH TIPS
Post by: nor66 on February 17, 2009, 09:11:33 pm
No thats a good tip!
Title: Re: TECH TIPS
Post by: George Herrin on February 17, 2009, 10:03:04 pm
I don't think it would hold for BIG HP. Its a cast gear not meachined steel. But for the less power motors great tip.
Title: Re: TECH TIPS
Post by: jerb on February 17, 2009, 10:37:26 pm
dont know how much power i'm making, but i busted a brake rotor clear in half with the sprocket welded to it,  :lol:
and floated the valves!!!!! :lol:
Title: Re: TECH TIPS
Post by: lowgalaxie on February 17, 2009, 11:11:13 pm
I have 3 sprockets that I have been using for a couple of years with no problems but the brake disc that I used to turn down are steel not cast.
Title: Re: TECH TIPS
Post by: jerb on February 18, 2009, 12:52:18 am
mine was cast, welded like it was steel which is weird, but where it busted you could clearly tell it was cast!
Title: Re: TECH TIPS
Post by: benfield_boy on March 28, 2009, 10:44:20 pm
 Hear is a good one for ya, Charging post for under $10  :woo: Go to wal-mart in the automotive department and get a female 12 volt power outlet and a male adaptor to go with it. Hook up the female up to you mowers battery and put on the mower somewhere you can get to easy. take the male adaptor and hook it up to your battery charger and your set to go!
      And if you don't have a charger you can get another male adapter and connect them via cord together and plug into your truck to charge.
Title: Re: TECH TIPS
Post by: benfield_boy on March 29, 2009, 01:27:24 am
 Here is a pic of where I put mine.
(http://i243.photobucket.com/albums/ff200/benfield_boy/th_plug.jpg) (http://s243.photobucket.com/albums/ff200/benfield_boy/?action=view&current=plug.jpg)
Title: Re: TECH TIPS
Post by: Rooster on March 29, 2009, 02:22:07 am
Ben,
clicking that pic sent my anti-virus spinning, might want to check your photobucket
Title: Re: TECH TIPS
Post by: benfield_boy on March 29, 2009, 08:53:30 am
 :confused:  Don't know why.
Title: Re: TECH TIPS
Post by: Ironmike on April 21, 2009, 04:26:30 pm
Charging post are $9 a piece so why mess with that plus the look nice when installed. JMO

IronMike
Title: Re: TECH TIPS
Post by: Rooster on April 21, 2009, 05:03:32 pm
Do you have a picture of a "Charging Post"
Title: Re: TECH TIPS
Post by: ktownmadness on April 21, 2009, 05:32:20 pm
http://cgi.ebay.com/ebaymotors/QuickCar-Remote-Battery-Terminal-Jumper-Charging-Posts_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQhashZitem330279306174QQitemZ330279306174QQptZRaceQ5fCarQ5fParts
Title: Re: TECH TIPS
Post by: Rooster on April 21, 2009, 05:37:58 pm
The only $9 I seen was the shipping, those are $28 a pair. Or $37 shipped...Thats what I thought you were talking about,where you get them for $9
Title: Re: TECH TIPS
Post by: ktownmadness on April 21, 2009, 06:18:04 pm
Not sure where he gets em for $9. I was just showing you that as a pic.
Title: Re: TECH TIPS
Post by: Ironmike on April 21, 2009, 07:41:29 pm
Race Car shop. Dont mess with ebay. They are $9 a piece. So thats where i get em.

IronMike
Title: Re: TECH TIPS
Post by: benfield_boy on April 24, 2009, 12:01:13 pm
 Here is a tech tip on engines. When you hone a engine out, put the head bolts in and let nit sit over night befor you hone it out. See, when you put in the head blots it distorts the wall and if you hone it without the bolts in it will be true untill you put in the head bolts. So if you hone it with the bolts the bore will be realy true.
Title: Re: TECH TIPS
Post by: Mowindown on April 24, 2009, 01:57:29 pm
Here is a tech tip on engines. When you hone a engine out, put the head bolts in and let nit sit over night befor you hone it out. See, when you put in the head blots it distorts the wall and if you hone it without the bolts in it will be true untill you put in the head bolts. So if you hone it with the bolts the bore will be realy true.

Assuming you are talking about having the bolts tight and assuming that you are talking about using stock head bolts I don't see how this would make much difference.  Because the head bolts will not have no real torque on the because they will bottom out or run out of treads before you get them tight like they would be with a head on it.  If you leave them lose/just hand tightened in there I don't see where that would distort the cylinder walls.

The real ticket is a torque plate.  Using a torque plate will allow you to install the bolts and torque them down just as if you had the head on.  The torque of the bolts is what distorts the cylinder walls.  With the torque plate in place and torqued down you can hone the cylinder and then when you assembley your engine you can feel sure that your cylinder wall is true.



Jed
Title: Re: TECH TIPS
Post by: Jeremy_Conley on April 24, 2009, 02:19:35 pm
I would have to agree with Jed on this one. A torque plate is the only way your going to get the cylinder to "distort" like it would if the head was bolted on.
Title: Re: TECH TIPS
Post by: benfield_boy on April 24, 2009, 06:45:37 pm
 Left that part out, I was at work and had to rush to type it.
Title: Re: TECH TIPS
Post by: Rooster on April 24, 2009, 06:48:04 pm
you mean somebody actually hones without a torque plate?
Title: Re: TECH TIPS
Post by: benfield_boy on April 24, 2009, 07:27:51 pm
 Some people just don't know...
Title: Re: TECH TIPS
Post by: George Herrin on April 24, 2009, 08:27:55 pm
Rushing to type and mis-informing when doing so.....Why not wait take your time and get it right the first time.
Title: Re: TECH TIPS
Post by: Coltster on May 07, 2009, 12:46:55 am
I made torque plates for my 87 Evo motor on my harley, but don't have the facilites to make any them any more, where can you find them for a briggs?
Title: Re: TECH TIPS
Post by: Allstar9031 on August 03, 2009, 11:40:14 am
Anybody got an answer for Coltster's question??
Title: Re: TECH TIPS
Post by: Rooster on August 03, 2009, 03:16:45 pm
I don't know if they are commercially available, but any local machine shop should be able to make one for you.
Title: Re: TECH TIPS
Post by: McLovin on August 15, 2009, 06:06:44 am
Hole saw and a junk head.  Drill it out with the saw.  On the steel bore motors it will make nearly no difference. What is being flexed is aluminum, against steel, the steel will win.  Also, we are talking almost no torque, these are not 1/2 in head bolts getting torqued to 100ftlbs.  In my opinion, it will just make you feel good, not give you a good feel. 
Title: Re: TECH TIPS
Post by: flyinryan on October 10, 2010, 09:26:04 pm
take some rope and run it around the pullys like your belt would and cut it where the 2ends meet and measure it.

hope this helps
Title: Re: TECH TIPS
Post by: GRUBDIGGER on December 30, 2010, 09:03:24 pm
THAT WORKS,BUT ADD 1-2 INCHES. THE STRING GOES ALL THE WAY IN THE PULLEYS WHERE THE BELT NEVER GOES.
Title: Shop tips, tricks and ideas
Post by: amr5080 on January 01, 2011, 08:55:56 pm
I looked and couldn't find a thread about this. I thought it would be interesting share some ideas that you use to make your shop be more effecient. I am in the process of setting mine up the way I want it, and would like to see what some other have done as far as storage, homeade tools, etc. Here is something that I made this evening. It is for funnel storage so that your funnels don't drip everywhere.
(http://i299.photobucket.com/albums/mm305/amr5080/th_SDC10362.jpg) (http://s299.photobucket.com/albums/mm305/amr5080/?action=view&current=SDC10362.jpg)
It's made from 3/4" PVC pipe. I have less that $10 in it, including pipe cleaner and glue.
Title: Re: Shop tips, tricks and ideas
Post by: flyinBranch on January 01, 2011, 09:20:33 pm
i use a piece of 1x6 board about 1 ft long to hold spark plugs. i drill 1/2 in holes in it about 3 in apart then just screw the plugs in it. It is nailed up on my wall.
Title: Re: Shop tips, tricks and ideas
Post by: GRUBDIGGER on January 01, 2011, 10:15:59 pm
VERY NICE IDEA. :twothumbsup:
Title: Re: Shop tips, tricks and ideas
Post by: tonykummrow on January 01, 2011, 11:28:26 pm
to hang invoices. and receipts, and notes up in the garage I have taken a few wooden spring style clothes pins and twisted one side out of the way. and drilled a small hole through the other (so not to split the wood) and pounded a nail through it into a convenient place on the wall. easy to grab and easy to see. and the clothes pins were free.( they came off the wifes clothesline) Dont tell her
Title: Re: Shop tips, tricks and ideas
Post by: scoot8801 on January 02, 2011, 09:47:00 am
I have a vice mounted toi a p[iece of squarestock, i can slip it into a reese hitch. I have a piece of stock welded to a bench for at home.
Title: Re: Shop tips, tricks and ideas
Post by: 2budzracing on January 02, 2011, 11:27:49 am
after 35 yrs. I have a ton but will just post a few: pnuematic broom, 4' of 3/8" copper tubeing and one of your air fittings.bend the first last 6'' in 90's creating a big 's' shape,braze your air fitting on and you can sweep your whole shop in about 20 seconds! not recommended for dirt floors.... :lol:
air lines: run them overhead as soon as you can right out of the compressor then make drops where you want them with drains about 1' below your outlets this will dramatically reduce moisture in the lines, also where you attach a valve or coupler use THREADED NYLON BUSHINGS these will never leak or go bad.threading metal into plastic is a break waiting to happen.and use brand new pvc when installing!mine are 1/2" throughout and work fine but if you want to increase your volume go to 1 1/2" if you have a tiny compressor this will help a tad.
a really neat and easy way to store air tools: it is called "punch angle" metal angle, the stuff usually used for hanging garage door openers etc. it has holes punched every 2'' or so on both sides.drill out every 6th hole on one side just big enough for your air fittings and mount it to the wall.I have one at each work station and all the tools normally used there are right there at eye level.the in between holes can be used for chuck keys,wheel attachments etc. and you always know where they are or belong.
Title: Re: TECH TIPS
Post by: GRUBDIGGER on January 02, 2011, 08:33:05 pm
YOUVE BEN IN THE SHOP WAY TO LONG. :D
Title: Re: TECH TIPS
Post by: amr5080 on March 03, 2011, 06:48:09 am
If you have a tubeless tire that leaks down, let the air out, break the bead and smear some permatex around the bead. Should seal up good for you.
Title: Re: TECH TIPS
Post by: George Herrin on March 03, 2011, 06:53:34 am
What works best a bead sealer.