Buzzard Beak

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I have been out of the hobby for 7-8 years. I have a Rossi 45 in a Balsa Nova that I have a problem with. The problem is the crank shaft is too short to tale an 11 x 6 prop with the thrust washer in it. You only have 3-4 threads of the crankshaft engaged on the crank. I found a prop hub I could get a firm grip with without the thrust washer o n it and have flown this 4-6 times. I got it this way from Morris Hobbies and never did get it taken care of.

Now that I am getting back into the hobby, is there anyone you have had good dealings with that I can call and explain my problem and then send the engine in for a fix.

I know Morris is out of business and not an option. This is too back as I like the Balsa Nova and enjoy flying it.

Thanks

Frank

aspeed

You could try a thinner front washer. I like to see 6 threads engaged. Some of the combat motors use a short shaft, mostly to save weight and stop it from bending, as well as less machining. They use a stepped nut. A counterbore must be made in the propeller or a larger hole, which is a PITA. A bit of material can be taken off of the front of the prop hub too, or use a different brand of prop.

speedracerntrixie

My Feedback: (29)

11x6 is a bit much of a prop for that engine. You may want to try an 11x4 as it would be more load appropriate and have a thinner hub.

Buzzard Beak

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aspeed, I think you have the answer there. Thanks.

Does anyone know of a repair depot in the US where I could send this to get the crankshaft changed.

Frank

earlwb

Rossi quit making model engines. All we have left is whatever is still around. Parts may still be found, but it can be tricky though.

You might try http://www.rossienginesusa.us/ and contact them to see if they have a crankshaft that might work.

Rossi evolved into AXE Rossi which specializes in model car engines now.

Buzzard Beak

My Feedback: (2)

earlwb, I did call them and no luck.

Thank you all for your efforts and advice. I'll work with what I have.

jwtrcfun

You may try PlanetHobby.com, inc. Allen Worley is a Norvarossi World Distributor and is very helpful anvd knowledgable. You may contact Allen directly #901-755-1536 or [email protected] I think he could help you.

Buzzard Beak

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Thank you. Email sent.

speedracerntrixie

My Feedback: (29)

Did you let them know you were planning to over prop the engine?

Buzzard Beak

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Planethobby could not help. Novarossi and Rossi are different parts. Very nice and quick response from him. He referred me to axirossi, which I have tried.

Speed, I'll put on the 11x4. Thanks

speedracerntrixie

My Feedback: (29)

Sounds good Frank, that engine likes to be run in the 16,000 to 17,000 range. I used that engine for several seasons of pylon racing and found the best prop for that was a 9x7.5. The 11x4 will most approximate the same load. Best of luck.

jaka

Hi!
It's an easy fix!
I make spinner nuts with an inner stud . Want one?

Buzzard Beak

My Feedback: (2)

Thanks for the suggestion. For now, I'm trying the 11x4 to see how that goes.

If there are problems, I'll PM you later.

Frank

Buzzard Beak

My Feedback: (2)

Jaka, PM sent.