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capebob · 08-19-2010, 08:33 AM

Has anyone fitted a Novarossi 91 to their Stratus? If so, what, if any, modifications did you have to make to accommodate the engine? Also, the back plate screw spacing would be helpful along with the total length of the engine from the backplate mounting surface to the front bearing. These dimensions aren't in Novarossi's specs.

Thanks,
Bob

head_node · 08-19-2010, 04:46 PM

Bob,

I've got a NR 91 in one of my Tempests. No issues there, but I can see where there might be a problem with the Stratus. I want to say at one time I held the NR up to one of my YS 91's and the backplates aren't the same dimensions. I wasn't able to check against an OS, so I can't really comment on that either.

Wish that I could be of more help. If I can measure the dimensions easily with it mounted, I may give that a try and report back.

-Joey

capebob · 08-19-2010, 05:04 PM

Thanks for the reply Joey. The most important dimension for me would be from the backplate mounting surface to the front bearing. I can make any shim required to fit the engine unless the engine is too long. BTW how do you like the engine? Were you able to use the YS collets?

Thanks again,
Bob

head_node · 08-19-2010, 07:57 PM

Bob,

No need for collets...I used a Maryland Machine fan. They're worth their weight in gold if you can find one. I was lucky enough to buy mine before he quit making them.

Regarding the dimensions, I bet you could get Allen at Planet Hobby to get you that measurement. They're in Memphis, and a good group of guys. They've been importing NR plants for quite some time.

Hope that helps some, and good luck!

-Joey

capebob · 08-20-2010, 06:17 AM

Thanks Joey, I appreciate the help.

Bob

head_node · 08-20-2010, 08:19 AM

Bob,

No problem. I guess I should answer your other question. I do like the engine. I've had it for a little over a year, but I haven't run it much. Maybe a case of fuel through it. I run Rotor Rage 20% in it, and the only thing that gave me some worry was getting the compression right. I have version 1 of the engine, so the manual wasn't so ...how do we say.."correct" in the compression settings. I ended up with compression set for 30% fuel (or maybe higher, can't remember right now).

At any rate, pay careful attention to the compression. You'll easily be able to tell if it's overcompressed. Get it right, and it's a nice motor. It likes RPM, so if you run 8.18 or 8.45 you should be fine. It just depends on what headspeed you want. Enjoy...

-Joey

head_node · 10-15-2010, 09:53 PM

Bob,

I was going back through some notes earlier, and I may have misled you, and I apologize. I now think that the dimensions on the NR are the same, if not very close to the YS. I think that I had mistaken my measurements with a Webra 91. It's hard to tell from my 'chicken scratching' though. At any rate, have you had the chance to test fit it? I'd really like to know how it went. Good luck, as always...

-Joey

capebob · 10-22-2010, 01:46 PM

Joey,

No, I haven't had a chance to get the NovaRossi yet. Still hacking away with my old YS ST.

Bob

08-19-2010, 08:33 AM	#1 (permalink)
capebob Registered Users My HF Map location Join Date: Apr 2004	Stratus and Novarossi 91 Has anyone fitted a Novarossi 91 to their Stratus? If so, what, if any, modifications did you have to make to accommodate the engine? Also, the back plate screw spacing would be helpful along with the total length of the engine from the backplate mounting surface to the front bearing. These dimensions aren't in Novarossi's specs. Thanks, Bob __________________ Samuel Adams field rep Buffalo Wings field rep Success is the ability to go from one failure to another with no loss of enthusiasm. Churchill

08-19-2010, 04:46 PM	#2 (permalink)
head_node Registered Users My HF Map location Join Date: Jan 2007 Location: Columbus, MS	Bob, I've got a NR 91 in one of my Tempests. No issues there, but I can see where there might be a problem with the Stratus. I want to say at one time I held the NR up to one of my YS 91's and the backplates aren't the same dimensions. I wasn't able to check against an OS, so I can't really comment on that either. Wish that I could be of more help. If I can measure the dimensions easily with it mounted, I may give that a try and report back. -Joey __________________ J.B. Jones

08-19-2010, 05:04 PM	#3 (permalink)
capebob Registered Users Thread Starter My HF Map location Join Date: Apr 2004	Thanks for the reply Joey. The most important dimension for me would be from the backplate mounting surface to the front bearing. I can make any shim required to fit the engine unless the engine is too long. BTW how do you like the engine? Were you able to use the YS collets? Thanks again, Bob __________________ Samuel Adams field rep Buffalo Wings field rep Success is the ability to go from one failure to another with no loss of enthusiasm. Churchill Last edited by capebob; 08-19-2010 at 05:06 PM.. Reason: Added a question

08-19-2010, 07:57 PM	#4 (permalink)
head_node Registered Users My HF Map location Join Date: Jan 2007 Location: Columbus, MS	Bob, No need for collets...I used a Maryland Machine fan. They're worth their weight in gold if you can find one. I was lucky enough to buy mine before he quit making them. Regarding the dimensions, I bet you could get Allen at Planet Hobby to get you that measurement. They're in Memphis, and a good group of guys. They've been importing NR plants for quite some time. Hope that helps some, and good luck! -Joey __________________ J.B. Jones

08-20-2010, 06:17 AM	#5 (permalink)
capebob Registered Users Thread Starter My HF Map location Join Date: Apr 2004	Thanks Joey, I appreciate the help. Bob __________________ Samuel Adams field rep Buffalo Wings field rep Success is the ability to go from one failure to another with no loss of enthusiasm. Churchill

08-20-2010, 08:19 AM	#6 (permalink)
head_node Registered Users My HF Map location Join Date: Jan 2007 Location: Columbus, MS	Bob, No problem. I guess I should answer your other question. I do like the engine. I've had it for a little over a year, but I haven't run it much. Maybe a case of fuel through it. I run Rotor Rage 20% in it, and the only thing that gave me some worry was getting the compression right. I have version 1 of the engine, so the manual wasn't so ...how do we say.."correct" in the compression settings. I ended up with compression set for 30% fuel (or maybe higher, can't remember right now). At any rate, pay careful attention to the compression. You'll easily be able to tell if it's overcompressed. Get it right, and it's a nice motor. It likes RPM, so if you run 8.18 or 8.45 you should be fine. It just depends on what headspeed you want. Enjoy... -Joey __________________ J.B. Jones

10-15-2010, 09:53 PM	#7 (permalink)
head_node Registered Users My HF Map location Join Date: Jan 2007 Location: Columbus, MS	Bob, I was going back through some notes earlier, and I may have misled you, and I apologize. I now think that the dimensions on the NR are the same, if not very close to the YS. I think that I had mistaken my measurements with a Webra 91. It's hard to tell from my 'chicken scratching' though. At any rate, have you had the chance to test fit it? I'd really like to know how it went. Good luck, as always... -Joey __________________ J.B. Jones

10-22-2010, 01:46 PM	#8 (permalink)
capebob Registered Users Thread Starter My HF Map location Join Date: Apr 2004	Joey, No, I haven't had a chance to get the NovaRossi yet. Still hacking away with my old YS ST. Bob __________________ Samuel Adams field rep Buffalo Wings field rep Success is the ability to go from one failure to another with no loss of enthusiasm. Churchill

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