Search: Posts Made By: av8tor1977
Showing results 1 to 25 of 500
Search took 0.79 seconds.
Forum: Engine Conversions Yesterday, 10:21 PM
Replies: 11
Views: 140
Posted By av8tor1977
Yes. I milled down the fins on the flywheel as...

Yes. I milled down the fins on the flywheel as much as feasible, then re-balanced it. That one was for a customer that wanted to keep the magneto. As mentioned, on all my personal engines, I...
Forum: Engine Conversions 02-19-2018, 09:44 AM
Replies: 11
Views: 140
Posted By av8tor1977
Yep, I believe it. Smog laws. Many of them...

Yep, I believe it. Smog laws. Many of them don't make sense. A properly adjusted and running engine will have the lowest emissions. A lean misfire will be emitting a bunch of nasties, as will...
Forum: Engine Conversions 02-18-2018, 04:13 PM
Replies: 11
Views: 140
Posted By av8tor1977
Hmmmm... The old memory gets foggy. Now after...

Hmmmm... The old memory gets foggy. Now after more thought, I might have had to use the 65cc Four Mix carb on the 32 and 36c Four Mixes because the smaller ones didn't have dual adjustment. Can't...
Forum: Engine Conversions 02-18-2018, 04:08 PM
Replies: 11
Views: 140
Posted By av8tor1977
I tend to prefer the original carb because it has...

I tend to prefer the original carb because it has a fuel pump pulse system designed by Stihl to work best with the unique Four Mix design. Other people however, have used other carbs with success. ...
Forum: Engine Conversions 02-18-2018, 01:50 PM
Replies: 11
Views: 140
Posted By av8tor1977
If you happen to set one of these up to run soon,...

If you happen to set one of these up to run soon, note that with the exhaust breathing more free, and with no air filter, they run way too lean. And they won't richen up enough by adjustment unless...
Forum: Engine Conversions 02-18-2018, 01:36 PM
Replies: 11
Views: 140
Posted By av8tor1977
Well, it's true that on the Four Mix engines,...

Well, it's true that on the Four Mix engines, total crankcase, (and valve cover, cam cover, etc.), sealing is a must, as they operate like a two stroke, with the air/fuel entering the crankcase. They...
Forum: Gas Engines 02-18-2018, 09:47 AM
Replies: 11
Views: 235
Posted By av8tor1977
As Ahicks mentioned, your "power supply" is an...

As Ahicks mentioned, your "power supply" is an unknown variable. An ignition only draws around 300 mAh, which even a little USB power supply should provide, but I recommend going to a 6 volt battery...
Forum: Gas Engines 02-18-2018, 09:31 AM
Replies: 11
Views: 235
Posted By av8tor1977
In short, my balky engine routine: See gas...

In short, my balky engine routine:

See gas pump from tank to carb?
Pull plug, check for wet or dry plus test for spark.
Dry plug; dribble about 6 or 8 drops of fuel into plug hole and re-try. If...
Forum: Engine Conversions 02-18-2018, 09:01 AM
Replies: 11
Views: 140
Posted By av8tor1977
I say "Go for it"! (I suspect you knew I would.)....

I say "Go for it"! (I suspect you knew I would.). ;~)

The Stihl Four Mix engines make very good power for a four stroke; almost the level of a similar size two stroke. Yes, the weight is higher,...
Forum: Engine Conversions 02-15-2018, 10:02 AM
Replies: 10
Views: 478
Posted By av8tor1977
Very nice! Excellent wheel landings too! I want...

Very nice! Excellent wheel landings too! I want to scratch build a stand off scale Fokker D7 for my converted and test run Stihl Four Mix 36cc engine. One of these days....

AV8TOR
Forum: Engine Conversions 02-13-2018, 09:32 AM
Replies: 10
Views: 478
Posted By av8tor1977
Very cool and I really like it. You have done it...

Very cool and I really like it. You have done it pretty much just as I would have.

Regarding my experience with the Stihl Four Mix: Be sure to adjust the valves somewhat frequently, and I...
Forum: Engine Conversions 02-12-2018, 11:02 AM
Replies: 10
Views: 478
Posted By av8tor1977
What speed and rpm do you have it geared to run...

What speed and rpm do you have it geared to run at? Do you start moving by pedaling, then use the engine? Centrifugal clutch or one-way coupler on engine?

Thanks,
AV8TOR
Forum: Engine Conversions 02-12-2018, 10:49 AM
Replies: 10
Views: 478
Posted By av8tor1977
That is a very cool, "antique looking" bike, and...

That is a very cool, "antique looking" bike, and it is interesting that you powered it with the Stihl! You should maybe add some "Steampunk" items to it, though it is really cool as you've made it....
Forum: Gas Engines 02-09-2018, 12:51 PM
Replies: 36
Views: 4,805
Posted By av8tor1977
These more modern engines weigh a good bit less...

These more modern engines weigh a good bit less so that shouldn't be a problem at all, and it will give you the power you seek. (I'm the same way; see my signature.) .Overall, I would say it would...
Forum: Engine Conversions 02-08-2018, 08:46 AM
Replies: 26
Views: 1,302
Posted By av8tor1977
Buena idea. ?Sirvio bien? ?Ya no se calienta la...

Buena idea. ?Sirvio bien? ?Ya no se calienta la maquina?

AV8TOR
Forum: Gas Engines 02-05-2018, 05:27 PM
Replies: 26
Views: 636
Posted By av8tor1977
Great!! Good work! Feels really good doesn't...

Great!! Good work! Feels really good doesn't it?

AV8TOR
Forum: Gas Engines 02-05-2018, 05:23 PM
Replies: 11
Views: 190
Posted By av8tor1977
Yep, that sounds like an excellent plan. We...

Yep, that sounds like an excellent plan. We think a lot alike!

AV8TOR
Forum: Gas Engines 02-05-2018, 11:52 AM
Replies: 11
Views: 190
Posted By av8tor1977
I bet the suppression used on commercial smoke...

I bet the suppression used on commercial smoke pumps is nothing more than the 3 capacitors, and the metal enclosure, but I could be wrong. At any rate, brushed motors on electric planes are "tamed"...
Forum: Gas Engines 02-05-2018, 11:44 AM
Replies: 11
Views: 190
Posted By av8tor1977
OK, thanks a lot for the info! My Sullivan...

OK, thanks a lot for the info! My Sullivan Skywriter doesn't say anything about breaking in the motor; only that you should be sure to run it on sufficient voltage for the first 20 minutes until the...
Forum: Gas Engines 02-04-2018, 12:15 PM
Replies: 11
Views: 190
Posted By av8tor1977
Thanks for the answers. I ask out of curiosity,...

Thanks for the answers. I ask out of curiosity, plus the fact that I have a brushed speed controller lying in a drawer, and one of those 16 dollar Sullivan "Streamer" smoke oil pumps. You can see...
Forum: Gas Engines 02-03-2018, 01:56 PM
Replies: 11
Views: 190
Posted By av8tor1977
Smoke pump interference??

I'm just curious about any possible RF interference issues with the various electric smoke pumps out there. Any issues encountered? How about with 72 MHz?? Is it necessary to "break in" the...
Forum: Gas Engines 02-03-2018, 01:14 PM
Replies: 26
Views: 636
Posted By av8tor1977
With the dam shipping costs so high now, it makes...

With the dam shipping costs so high now, it makes things difficult to offer service.

AV8TOR
Forum: Gas Engines 02-03-2018, 10:48 AM
Replies: 26
Views: 636
Posted By av8tor1977
I totally agree that nowadays leaking crank seals...

I totally agree that nowadays leaking crank seals are very rare, though it can happen, and if it does will cause you a tuning nightmare if you don't know to look for it. It had been a long time since...
Forum: Gas Engines 02-02-2018, 01:37 PM
Replies: 26
Views: 636
Posted By av8tor1977
I have a pressure/vacuum setup I made to test two...

I have a pressure/vacuum setup I made to test two strokes. It is basically just two plates. One bolts onto the exhaust port with a rubber gasket and has a threaded hole to which I installed a 0 to 10...
Forum: Gas Engines 02-02-2018, 11:26 AM
Replies: 26
Views: 636
Posted By av8tor1977
Sounds like you must have a vacuum leak...

Sounds like you must have a vacuum leak somewhere. Check carb mounting adapter for cracks, the carb gaskets, the crankcase, cylinder base, and the front seal. You might try getting it running, and...
Showing results 1 to 25 of 500



Forum Jump


All times are GMT -8. The time now is 08:42 AM.