Nice.

Do yours idle high

Those wheels are some of the best-looking wheels for a miata, awsome build

I thought the same but, you should take a look online it was in a light weight experimental aircraft. Which is a category used to build an aircraft without all the routine inspections required for larger airframes.

@@parkerstutsman7181 interest ming

@@hunter7476 I forgot to mention it used to have a prop shaft on it when I started the rebuild but I swapped it out for the heavy flywheel with the orange ring on it.

@@parkerstutsman7181 nice good running engines when properly tuned

The Quickie (QAC Q1) was designed around this exact engine in the late 1970s by famed aeronautical engineer Burt Rutan (Voyager, Beech Starship, SpaceShipOne). It originally flew on the Onan 16HP version, with a maximum weight of 460Lb and a climb rate of under 400fpm. It was quickly changed to the 18HP engine. Gross Wt. 480Lb, Climb rate 420fpm. Later, it used the 20HP B48G modified with shaved heads and higher compression, bumping power to a "claimed" 22.5HP, instead of this 18Hp B43G motor. This later model was and is the definitive version and the only model that performed reasonably well at higher elevations while carrying a larger pilot (95 percentile male) Specs: B48G/22.5HP, maximum weight of 520LB, Climbed nearly 550fpm. But, it maximum gross wt. was advertised 20% heavier than originally designed and I suspect that was borrowing from its structural safety factor. As the airframe was still the same all along, from the 460lb initial version. (They had/have nylon plastic wheels with real tires and inner tubes, and hand operated e-brake handle that applies pressure directly to the tire treads, while landing at interstate speeds of 60-65mph. Very not smart).

Those were 15s with 235/45 I belive

Or an ultralight aircraft. That's a good motor to use.

Actually im in the process of putting an onan engine on a gokart, big issue with mine is the driveshaft is 1-1/2 inch in diameter and the biggest clutches and torque converters only come in 1 inch diameter. So as of right now im seeing how id run a jackshaft with a torque converter.

@@absolutelyphucked150 A torque converter? That would have to be one heck of a go kart. Sounds like you're putting an automatic transmission in it.

@@Cat-fy5lw these engines are heavy duty cast iron and weigh a lot not running fast enough or light enough for an aircraft

Thanks! I am not I actually recently sold the cart. I am in the planning stages of a mini cooper cart build which I want to video from the start. I screwed up and didn't film miata content until the end really.

I couldnt film either from the start but ur cart clearly added traction to ur channel. I hope thing go good for your channel. Ill help be a day one.. hell my channels struggling as well haha hopefully i figure something out to pop off. Takes a great start to get the ball rolling!

It is off to a new home, sold it today

@@parkerstutsman7181 ahh, any idea what city they were headed to

@@bencox1160 should be in Arkansas city

@@parkerstutsman7181 what u sell it 4?

@@ericworthington7299 2,800 which is fair for the hard life that car endured lol

Not sure what carb was used on the aircraft, this was not going to find its way back on one. The other issue was using a flywheel on this engine while the aircraft uses a propeller and propeller shaft.

I sold the fully built green motor for 850+shipping. Which was less than it should have been but I made some money.

Life not lite

I belive the motors are very reliable, they are simple and built well. They used these engines in kit aircrafts. I've seen many people say they get 1750-2000 hours. The issue is lubrication of the cylinder walls. Being opposed and laying on the side rings wear out and can cause cylinder wall wear.

Thanks

Change oil and filter and air filter and do maintenance and take care of it and it will outlast you

Some of it is, alot of people have done exo karts I wanted to put my own style into it. Also keeping the windshield and legality of it with indicators was important

Most of the time they go in older john deere tractors. I tried to match the john deere green it was really close.

Unfortunately not sir

Thanks, I actually picked up the miata for $1000 in east Arkansas. Everything together it was about $3500.

Parker Stutsman that’s a great project man! We paid $900 for ours and probably have another $450-500 in it with roll cage tubing and bits and pieces. We’ve been fortunate to have some people donate parts and a tire sponsor keep us in good tires!

Correct. Just for the startup I left the sheilds off the bottom . The front shroud is enough for a short run. The final assembly had all the sheilds installed

Unfortunately I only buit 3 of them after I found one and then bought a bulk lot of 4 engine in rough shape that needed some work. I had to order all the parts on ebay. Exhaust components were the hardest to find because the steel seemed to thin for use as headers.

parker stutsman yeah :) it’s such a dumb thing to get stuck on too so unless you have a welder, pipe bending skills, and the tools to cut the flanges it’s a major pain. I’m putting a points box on now and it’s so unclear how to adjust everything to get it right.

1.25

mine is 1-1/2, i also think i have a different onan engine though.

The p series’s have usually 1-1/8

I've rebuit 2 and restored parts for sale. I haven't done them in a while now. I have a miata I'm almost done with and 2 polaris ATVs that had engine rebuilds now. If you believe the engine has just typical wear then it would be good to rebuild. Its when you have to buy a new block that the choice is hard. I'm not sure I am ready for another project just yet.

parker stutsman yeah the blocks good just needed pistons rings and the cylinders honed. It smoked

I am guessing this as an 18 horsepower ?

Is that the same one as the onan performer 18 xsl see I don't know because it didn't have one side cover to it just the front cover I need to know if if uses points or a condenser on the coil My onan gt 19.9 does have points and a condenser but not the 18

Does it use a pickup at the flywheel or points like my engine?

@@parkerstutsman7181 pickup at the crank shaft. I have taken the plugs and zip tide them to the muffler pipes. Crank it over and both plugs have spark. I see plenty of fuel at the plugs.........

@@vincentprocaccini i feel like it has to be due to timing. But one thing about these engines that you won't notice easily is if the cank and cam are not timed correctly. Its easy to tell by taking a head off and turning the engine slowly. If you can clearly see each stroke and get to the ignition pickup point on the crank just before top dead center with both valves closed you can verify you are close. I would be willing to say you may be seeing ignition just before your intake at the end of an exhaust stroke.

@@vincentprocaccini also reason I say its hard to notice is because your valves will never impact the cylinder head which makes this a great engine to learn to rebuild. Hard to really damage much.

parker stutsman copy. Thanks so much for monitoring your site. I will give it a close look. Thank you

you can use a flywheel and pickup on a points engine and it will function in the same manor as the points. You will have to ensure your flywheel has the pits in the back of it.