How does the Canaday 29cc engine compare to the electronic ignition converted G-26 based on the information below? I have included as much info as I could find on RCU. Refer to page 10, Post #284 in Great Planes 1/4 scale Gene Soucy Extra 300S for a pic of this engine.

Engine Specifications:

Size: 29cc

Weight: 44 oz. (w/ignition, less battery, switch, & muffler)

Spark Plug: CM-6 NGK Mini

Ignition: C&H Syncro Ign. w/ Shielded CNC Cap (auto retard for better idle & starting)

Carburetor: Walbro

Tuned Air Horn: Standard

Carb Insulator: Turns shaft for Straight pull

Prop Bolt: 8 mm (no necked down stud to break)

Custom CNC Lite Motor Mount & Stand offs

Muffler: Fits G-23/G-26

Introductory Price $399.95

*Cylinder may be machined round for $15 extra

Performance with stock g23/g26 muffler:

15 x 8 APC 10,500 rpm. 17 x 6 APC 9,800. 16 x 8 APC 9,500. 16 x 10 APC 8,500. 17 x 8 APC 8,300. 18 x 6W APC 8,300. 18 x 6 Mejzlik 9,100. 18 x 6 Menz 9,000. With tuned canister gains of 400-600 rpms are seen.

Static Break-In:

Make sure that Jackā€™s 29 cc is mounted on at least 6mm/1/4ā€¯ aircraft grade plywood, and is firmly fixed with 4 bolts.

We recommend a 1200mh NiCad or NiMH battery. Use a heavy duty on/off switch.

For the first Ā½ gallon of running we recommend a 16 x 8 prop.

For the first 2 gallons of running we recommend a 32:1 mixed ratio consisting of 3 oz./gal. Lawn Boy Ashless Oil + 1oz./gal. Racing Castor.

After 2 gallons we recommend a synthetic/castor mix @ 40:1 mixed ratio. Bel Ray, Mobil 1, or Honda Racing, @ 2 oz./gal. + 1 oz./gal. Racing Castor.

Prop Recommendations for Flying:

120 Size Aerobats- 18 x 6 Mejzlik or Menz

120 Size Warbirds- 16 x 8, 17 x 6, or 17 x 8 APC

We have experienced the best performance with these props and do not recommend other brands at this time.

Lathrop Small Engine Service

P. O. Box 125 125 Maple

Lathrop, MO 64465

816-528-3937 [email protected]

"The prototype was based on a Zenoah but number two is based on a photocopy Chinese engine that is very similar to the G-26. The machine work is a bit better. Call Jack Canaday with any questions at 816-528-3937."

Ah, progress...Looks very close...I think mine would be lighter if I chopped of the back of the case and put the ignition in a separate box...The Canaday is stronger using a stock G23/26 muffler..
Guess I'll have to send away for a Sikk 29 and modify it for a comparison..

RCIGN1,

Is a Sikk 29 a stock Chinese industrial engine?

Made for scooters and Go Peds.....There are 3 or 4 different models and configurations....
Look on Daves Motors...Apparently Sikk and Superior started as clones of the G23/26 Zenoah engines and went on from there....[8D]

RCIGN1,

Do you have any photos of your lightened engine?

Lightened G26, shown with a DA sheilded cap and NGK CM6 spark plug....cylinder turned round, case machined front and rear, crank cut off flush in back..The stud and hub on the bottom are stock, 6mm where it goes into the crank..
The other hub pieces are the RC Ignition/BH Hanson new safety hub..5/16x24 grade 8 prop bolt, 2024 aluminum hub bolted together with three 5mm grade 8 allen bolts, held on the crank with a 6mm grade 8 allen bolt..Will NOT break or snap off...No G26 leaves here without it...
Total weight is 2 lbs 3 oz as seen, without an ignition circuit..Not a lot of weight saved for the extra work.., normal is about 2 1/2 lbs with ignition inside the rear case...
If Zenoah 26s suddenly appear with 2 piece hubs, we did it first

Hi Ralph,

That is pretty light!

Can you make the hub longer to set the engine back more? What would be the max you would recommend?

Yes, could..The G26 has two front crank bearings so a little longer is OK...I wouldn't go much more than 1/2 inch longer, the crank is kinda small and any out of balance condition would be amplified...Better to space the engine farther from the firewall [8D]

Do you have the dimension from the front of your prop driver to the front top of the cylinder and from the center line of the crank to the top of the cylinder? I am trying to see if the head would fit into a cowl I have. I know the spark plug wire will protrude, that's o.k.

3.600 from the edge of the hub to the top fin, 5.43 center line of the crank to the top of the spark plug boot..The DA cap and CM6 spark plug reduce this by .300, to about 5 1/8...

I think I asked the questions wrong, lets start over.

What is the dimension from the face of the prop driver straight back to the front of the cylinder?

What is the dimension from the centerline of the crankshaft to the top of the cylinder excluding the spark plug and boot?

Thanks

1.700 and 3.800

Ralph,

Thank you for taking the time to answer my questions. How and where do you mount the ignition sensor? Would you consider converting one of the 29cc engines?

Sensor mounting..this is a stock G26..You can see a ring pressed on the front of the crankcase..I mill a slot for the hall sensor in it at the bottom.The hall sensor is glued into the slot with 5 minute epoxy...The other ring is pressed onto the bottom of the hub and has the small magnet embedded in it, also with 5 minute epoxy....The hub is put on the taper so the circuit fires at 28 degrees BTDC...I don't use the stock hub anymore, since there were some reports of the stud breaking off at the crank...I make a 2 piece hub, way stronger...Most crankcases are round on the front where the crank seal is pressed in..If the case can't be used there's usually someplace on the case where a bracket can be bolted on with the hall sensor in it..[8D]
I will not be doing any more chainsaw and weedie conversions quite a while, too busy with other projects..Zenoah conversions only for now...And bent crank repairs.

?

I don't see the timing sensor pickup or where it's mounted.

That's because it's a "before" shot..Here's an "after' on a GX25 Honda..

Oh.

Ralph, how do you like that GX25? Don't mean to hijack the thread but just wanted to know.

Sold it to Will Dunlop in New Zealand, he has it on a plane but not flown yet...Liked it fine, just bought it to convert for comparison to the Shindaiwa...Haven't seen any other 4 strokes yet, too busy with G26s..

I can understand the demand for G26's. Best engine I've owned. I want to build a 101" Ziroli B-25 and put a pair on it.

RCIGN....I sure am proud of all them photos your are doing now. Must be you got a new camera!!! Keep up the good work. Also .....Have a Merry Christmas..... Capt,n

Hmmm...

It's the same base weight as my Brison 2.4 (39cc) which is $20 cheaper an more powerful...

APC 17x12 @ 7750 rpm

__________
Schpankme

Warren, could you explain that a little please. What is the same "base" weight as your and Brison 24 and $20 more expensive.
Thanks
Ron

The Canaday 29cc motor we're talking about is the same weight bare, but $20 more than a Brison 2.4 which is 39cc.