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Messages - cycloneracer

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1
Briggs Flathead / Re: parts interchange, V to H shaft engines
« on: October 16, 2020, 10:35:41 AM »
I’m sure factory is set at 3650 for max RPM’s.  I’m going to guess you will have plenty of power to run it at whatever speed you’d like. 


2
Briggs Flathead / Re: parts interchange, V to H shaft engines
« on: October 15, 2020, 07:17:16 PM »
Cool plan!  The old opposed will run a long time if you take care of it and keep the RPM’s low.  The carbs can be a pain but easy to work on.

Good part is that if it ever dies you can bolt in a big OHV single.  Those things are cheap and plentiful.

Post pics when it is done!


3
Briggs Flathead / Re: parts interchange, V to H shaft engines
« on: October 14, 2020, 06:24:16 PM »
Is this an opposed flathead twin or a OHV v-twin? 

I wouldn’t mess with a gear box.    I’d run the horizontal shaft for sure. 

How do you plan on shutting the compressor down when it reaches pressure?   

I wouldn’t mess with piecing together old engine parts if you want it to be reliable.  I’d go get a Harbor Freight Predator v-twin.  They are pretty good engines for the money.  Parts are available if you have issues.  There are even guys building aftermarket upgraded parts for them!!

4
Briggs Flathead / Re: 42 oppy build governor gear questions
« on: October 13, 2020, 10:12:49 PM »
Plastic won’t fly apart like a metal one would.  I haven’t ever had one fail.  I’ve had several singles that ran over 8k RPM

5
Briggs Flathead / Re: 42 oppy build governor gear questions
« on: October 13, 2020, 04:46:33 PM »
I’m not familiar with opposes twins.   But every other Briggs uses that plastic gear as the oil slinger.   Pull the Governor parts off of the plastic gear and reinstall 

If removing the Governor you need a billet flywheel.   

6
Driveline / Re: Disc Brake
« on: October 08, 2020, 12:35:00 AM »
http://www.heymow.com/index.php/topic,24099.msg242892.html#msg242892

Check this out.   This is what is called a “hat”. 

Unfortunately you need to move things around to get more than a 1/2” of clearance.  You need sone sort of hub to fit between the axle housing and the wheel hub. 

7
Driveline / Re: Disc Brake
« on: October 06, 2020, 11:16:20 PM »
You need a brake hat to offset the rotor over axle housing. 

You may have to have one custom made.   I?m not sure if anyone is producing them anymore. 


8
Newcomers / Re: effect of total weight on gear ratio
« on: June 26, 2020, 01:10:34 AM »
That is a factor.    Build it to what your buddies are running.   Get seat time and adjust.  It took me a few years to find the sweet spot.

9
Briggs OHV & Vanguard / Re: GP fell flat on its face!
« on: June 23, 2020, 03:53:59 PM »
Too high of gear.   

10
Briggs OHV & Vanguard / Re: GP fell flat on its face!
« on: June 22, 2020, 12:36:36 PM »
Were you lifting for the corners?    Or were you holding it wide open all the way around the track?  Did you lift while it was still pulling?   

11
Briggs OHV & Vanguard / Re: GP fell flat on its face!
« on: June 21, 2020, 05:30:34 PM »
You might have something starting to seize.  Creating drag.

Did it improve when you dropped gears?

12
Briggs OHV & Vanguard / Re: 44 intek hard starting
« on: April 11, 2020, 02:09:00 AM »
Did you the clearance on the valve retainers to the valve guides?   I bet you are bottoming out the retainers out on the guides.   Check your push rods.  They will be bent if this is the case. 

I made this mistake.  That cam has a lot of lift! 

13
Coffee Shop / Re: what mods can i do to my B&S 6.5hp engine?
« on: April 06, 2020, 09:35:27 PM »
That site states you need to replace the flywheel as well for safety.  Performance is the added benefit. 

No discussion of removing the governor without a billet flywheel. 

Most “free” modifications do not gain much performance.    Camshaft and valve train will yield the best gains.


14
Coffee Shop / Re: what mods can i do to my B&S 6.5hp engine?
« on: April 06, 2020, 12:42:41 AM »
I got about 13 hp out of a 6.5 hp 212 cc predator engine with less than 6 bucks. I strait piped it, removed the governor, made a custom air filter, and jetted the carb. The thing shot 6 inch flames out the exhaust then blew up putting a hole in the crankcase. Don’t rev it under no load and I’d say your fine. The engine was a couple years old and ran hard. Also their only $99 at harbor freight. Just remember, more air flow = more power. One thing to watch with the small engines at high rpm is if the pressure release on the cam gets stuck. If this happens it will be really hard to pull on the starting cord and you just have to open up the crankcase and tap it to get it to move.

Dyno sheet?   

No way you double the horsepower by jetting the carb.   Flames out of exhaust is too rich and less horsepower. 

If you remove the governor you need a billet flywheel for safety. 

15
Coffee Shop / Re: what mods can i do to my B&S 6.5hp engine?
« on: March 25, 2020, 09:05:47 PM »
Flywheel and ride are a must if removing governor from an opposed twin.  Leave the rest stock and you will have cheap fun.   

If you only remove the governor you will shoot a rod through the block or die when the flywheel explodes.   

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