Railridr

I picked up a few more motors this week. In addition to a 30cc homelite, I picked up a Kawasaki, and 3 Stihl motors. The Stihl motors are all 25.4cc, and the kawasaki is 26.3cc. I am most interested in how the Kawasaki will perform once it has been converted. Attached are some pictures.

Railridr

More Pictures

AnthonyH

My Feedback: (16)

I am not sure about the Kawasaki, but the stihl turns out real nice. Mine spins a MA 18x6 at 8000 and a Zinger Pro at 7000. My final weight is 60oz ready to fly.

ZAGNUT

My Feedback: (1)

i've got a pair of 25ish cc kawasakis from hedge trimmers that look real promising once i dig into them. will make a superlight engine of less than 30oz. including mount, hub, exhaust header and ignition...should be just the ticket for a lightly built .45-60 size fun-fly plane



dave

sides7

My Feedback: (9)

I have a Kawaski 40.2cc from a back pack blower. Haven't done anything except remove it from the case. If someone knows good or bad about this engine - would be interested to hear what they have to say.

Sides7

BillS

Great pictures.

I like the Stihl with the pull start on the back and would be interested in knowing the weight with pull start, magneto and stock muffler. The three screw holes holding the pull start look like the perfect place to use a 1/8� flat mounting plate with four standoffs.

Thanks in advance for posting the weight.

Bill

KenLambert

My Feedback: (107)

here is a stihle

BillS

Ken,

The mounting setup is nice and clean. For what it’s worth I used 1/8� aluminum on a similar mount for a 57cc Stihl without difficulty.

Enjoyed your web site.

Bill

KenLambert

My Feedback: (107)

1/8 is strong enough but when useing flat head screws counter sunke it gets a little thin ,and when I do the lightening on the plat there is not much weight difference . I have used 1/8 for a lot of mounts also .

Railridr

I have cleaned up and stripped down the Kawasaki. I gutted the muffler and had 2 - 7/16 ID tubes welded into place, then I painted the muffler black. As the engine sits it weighs 2 lbs 14 ounces. I am projecting around 3.5 pounds once I get a prop adapter and install the carb. I think I could get the weight of this engine down to around 2.5 pounds if I installed an electronic ignition, and an aluminum muffler.

Railridr

I had to trim the flywheel a bit because I broke one side of it when I was trying to remove it from the engine. I just trimmed the other side of the flywheel to match.

Railridr

BillS, The FC 75 pictured above with the stock flywheel, muffler, pull start, and carburetor weighs 4lbs 6 ounces.

tripp3d

Be careful with a flywheel that may be out of balance. I have seen one break and its not a pretty sight if you're anywhere near. They Explode!!!

Railridr

Thanks for the warning. I balanced this flywheel after I reshaped it.

sides7

My Feedback: (9)

Railridr,
Whats new with that Kawaski? Real interested if it makes a good conversion or no? Have any numbers yet?

Sides7

Railridr

Nothing new to report. I have not done anything with this engine since I finished the muffler last week. The last little bit that I need to finish up is to figure out what threads are on the crankshaft, and have a prop adapter made. I also need to adapt a Walbro carburetor to the heat dam. The stock carburetor is a rotary carburetor that has no mixture adjustment on it. The mounting holes for the stock carburetor do not line up with a walbro carburetor.

Railridr

I Finally got around to working on these engines this week. I have to give a Big Thumbs up to Ken Lambert. I ordered 2 prop adapters and 2 mufflers for the Stihl 25.4cc engines from him this past week. I ordered everything Monday night. He shipped them Tuesday morning and I received them Wednesday afternoon.

I worked all evening on Thursday and yesterday Carving off all the excess aluminum from the crankcase on one of the Stihl engines. I assembled the engine this afternoon with all the parts and and a new Walbro WT-21 Carb. I was not able to tach the engine as the battery in my globee died as I was trying to check the rpms. I also do not know how much this engine weighs, because I do not have a small scale that goes over 1 lb. I have a feeling that this engine is turning close to 8000 rpms on a MAS classic 16x8 prop. I was really impressed with the throttle response of this engine, once I got the carburetor tuned up. I tried hand starting this engine, but I just could not flip it fast enough. My good ole dynatron got it going in short order. I had no troubles starting it while I was playing with the carburetor, it started immediately everytime I hit it with the starter.

I have a second Stihl engine that I am starting on this week. I broke the top ring while trying to get it unstuck. I am going to replace both rings on this engine and get it running this next week.

I am very close to getting the Kawasaki up and running. I e-mailed Ken Lambert the crude sketch of the prop adapter that I needed, and he is currently working on the prop adapter. The prop adapter that I need for this engine is a little different because it needs to fit inside the flywheel. This Kawasaki came with a strange Carburetor that is not adjustable, and the holes in the heat dam do not line up with a walbro or a Zama. However, I have found that the heat dam from the Stihl 25cc lines up perfectly on the kawasaki crankcase for the carburetor pulse hole, and a walbro will bolt right up to the Stihl Heat dam. I should be able to get this engine running in short order once I receive the prop adapter.

Below is a picture of the Stihl 25.4 after it's test run

Railridr

I received the Prop adapter for the Kawasaki on Thursday from Ken Lambert. I mounted up the engine yesterday, and ran it. The Kawasaki turned 7900 RPMS with a 16x8 APC Prop. I used the same Walbro WT-21 on the Kawasaki that was on the Stihl. I also used the Stihl heat dam on the Kawasaki. It is a direct bolt on fit with no modifications required. The mufler that I used was the Stock muffler that I cut apart, gutted, welded back together, and welded new 7/16 " exhaust tubes in. The modified flywheel held together just fine. I will post some pictures tomorrow of the Kawasaki.

Soupy944

what exhaust to use for the kawasaki 26.33 engine? links FTW!!

captinjohn

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