Posts: 219
Joined: 1/23/2004 From: Laurel,
MT, USA Status: offline
started 33cc homelite conversion today(99$ at home depot). stripped it down and noticed that the flywheel looks a lot like the flywheel on my 31cc ryobi conversion. upon further examination it seems that they are identical with the exeption of the key-way(older ryobi with key in the crank). same casting # on both 21870. can i bolt the the ryobi flywheel and prop hub on my homie(with a little key-way work)?? any input would be appreciated.
< Message edited by rsjr -- 1/24/2004 4:54:27 PM >
Posts: 754
Joined: 8/31/2003 From: Seymour, IN, Status: offline
BTW, you can also just grind away the cast key all together. Mark with a pen on the outside of the flywheel its position and using this mark and the key-way in the crankshaft, Line up your timing or advance it slightly for more power at rpm's or retard it for a smoother idle. Now a "slight" adjustment is only about the width of the key-way or less. To much advance and the motor will "pop" at high rpms. I've tweeked on my ryobi this way and went too far till I heard it pop and moved it back a frog's hair and it quit, got 600 rpm more from the motor but what a rough idle. If your flying a Cub with it, go with a bit larger carb, free breathing muffler, large dia./flat pitch prop and pull the timing back for a smooooth running motor with good torque. A fire breathing motor isnt always the best way to go if your just wanting to shoot touch and go's late in the afternoon from your lawn chair with your favorite floater. I have a number of ryobi 31cc's and homie 25cc' and 30cc's and there all setup differently in regards to timing and carbs. Piper
Posts: 17860
Joined: 12/11/2001 From: Taylortown,
OH, USA Status: online
There are two brands of flywheels commonly on the Homelites and Ryobi's. The Phelon is more commonly on the Ryobi and the Walbro on the Homelites. But it's not unusual to see either flywheel on either engine. Homelite on their 25/30, list both as interchangeable with each other and with no choice as to which one you are likely to get when you order one.
I think the Walbro gives a hotter spark and the flywheel is more balanced but you can get satisfactory performance from the Phelon.
Enjoy,
Jim
_____________________________
Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Posts: 219
Joined: 1/23/2004 From: Laurel,
MT, USA Status: offline
o/k thanks guys for the good info.i will bolt the ryobi flywheel on the homey 33cc saw motor and save some time and $.I`m going to fly my tf stinson reliant with it as the ryobi did`nt quite have enough poop for me.this homey is an easy conversion and if hurry up and get it bolted on my plane i can get a couple of flights in b-4 the weather gets nasty.thanks again.
< Message edited by rsjr -- 1/24/2004 5:10:59 PM >
Posts: 754
Joined: 8/31/2003 From: Seymour, IN, Status: offline
Post your prop and rpm when you get it fly'n...I got a saw calling my name at a local repair shop with the 33cc in it. I've been on the fence on getting it given all the other motors I've got laying on the bench.
Posts: 1358
Joined: 3/14/2002 From: Brecksville, OH, USA Status: offline
I just bought two of the Homelite "Bandit" 14" saws today from Home Depot ($99ea.) to get the 33cc engines for a twin project I'm working on. Those are great engines! ...more compression than the 25/30s and they already have the bigger carb on them. I have one in a BUSA triplane and it flies it great.
BTW, wackerengines.com now has mounts for them available.
Posts: 219
Joined: 1/23/2004 From: Laurel,
MT, USA Status: offline
Finished the 33cc homey conversion today,used the ryobi flywheel and prop hub.I lined it all up like MR.PIPER CUB suggested and torqued down the nut w/ a little threadlocker. bolted the motor to my TF stinson reliant, hooked up the throttle,fuel line,etc. I tied the plane down to the starting table,set the choke and put the starter to it. the motor popped right away so open choke and hit it again with the starter. the motor fired right up. A little needle adjusting and she runs great! Charge the batteries overnite,check the CG and I should be doing lazy 8`ts tommorrow... I ran the motor with open exhaust so earplugs are a must. My flying field is only 300` from my house and a muffler is not mandatory. Sounds cool !! I ran the curtis hawk with ryobi and open exhaust 50+ flights, lots of fun!!
< Message edited by rsjr -- 1/25/2004 4:03:06 AM >
Posts: 219
Joined: 1/23/2004 From: Laurel,
MT, USA Status: offline
Sounds like a cool project Timoth4! I`ve been scoping out 1/4 scale fokkers (I really like the DVIII) for a couple of years now. I`m going to convert another 33cc homey soon for my scratch-built from wendell hostetler plans curtis hawk p6-e. I wore out the twin ringed 31cc ryobi that was always underpowered and overweight on the bipe and for 99$ the homie is a bargain! what kind of plane is your twin project going to be? I`ve been thinking about a catalina PBY powered by twin homeys... here`s a pic of my low budjet 1/3 scale never finished/flown Fokker DVIII.
< Message edited by rsjr -- 1/28/2004 8:26:36 PM >
Posts: 1358
Joined: 3/14/2002 From: Brecksville, OH, USA Status: offline
The DVIII would be excellent for the 33cc Homelite!
I have a couple other planes with the 25cc motors out of leafblowers but that was before I heard about the 33cc ones. The two I just bought are for a Messerschmitt 110 from don Smith plans. I was going to use two 25s but I decided to use the 33s instead for a little more power. I have a thread about the 110 under the warbirds forum called "Don Smith Me 110 Build".
Also, if you hit the gallery button below you'll see the BUSA DR1 that has the Homie 33cc in it. I tried converting a Ryobi but I couldn't get it to run right and gave up on it. The hub I bought for it fit on the Homelite 33.
Jim
< Message edited by Tmoth4 -- 1/25/2004 5:25:25 AM >
Posts: 219
Joined: 1/23/2004 From: Laurel,
MT, USA Status: offline
Jim, you have some good looking planes! Love the paint scheme on the Dr1. The ME 110 is a cool german bird that would be great for the homey conversion! I too gave up on the ryobi, too many deadstick landings... It seems that the 33cc homey and the ryobi have a lot in common, same bolt pattern for carb, muffler, even the flywheel is the same. Makes for an easy upgrade,buy a homelite bandit 14" saw for 99$ strip the goodies off the ryobi and wa-la.
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33cc homelite - 
