JT Hammer

After breaking in my new S.T. .90 am putting it in my VMAR Tiger Arrow. This is a somewhat sleek, about 58" low-wing airplane, that will weigh in the area of 6.5 pounds with this engine. Have been flying it with a .60, but had to add 16 ounces to balance it. What prop would you suggest to go on the .90 for maximum speed? I am thinking a 13/6 or 8 for break-in, and going to 12", high pitch prop fpr speed. Am I in the ballpark?

Flyboy Dave

My Feedback: (21)

....'fer speed, an 11-9. I just saw one with the 11-9, it hauled.

FBD.

Razor-RCU

My Feedback: (50)

I 2nd Super-Dave, although I should specify 11x9 APC You could run a 12x8 but I would go 11" fer speed-

JT Hammer

Thx guys. I'm a bit surprised to hear you suggesting an 11x9 prop for the .90, but if you say it's good fer speed, I'll give it a try. I expect the rpms might be well over 13,000 with this prop. And yes, I use apc's on all my engines. Cripes, we got 3 and 1/2 months of winter left up here in Canada before I can fly it. Perhaps I'll break it in on milder days here in my driveway. My neighbors are used to this kind of noise now. The S.T. .90 is likely a little 'louder' though!

JT

Flyboy Dave

My Feedback: (21)

Hi, James....

....Speed Junkiy had a Cermark Javelin at the Revvers Meet with an 11-9 APC
on the S.T. 90. It was only 5-10 mph slower than the Patriot XL with the Jett 90. [X(]

JT Hammer

Wow, I wonder what that guy was using for a muffler or pipe and fuel? I can't remember if the Javeln has a retract option? Sounds like the S.T. .90 has some potential for speed besides being just a brute for raw power.

JT

daven

My Feedback: (1)

Don't be afraid to let it rev. 11x9 or 12x8 work well depending on how clean the airframe is.

Flyboy Dave

My Feedback: (21)

I believe he was running it on regular ol' 15% nitro....PowerMaster Fuel,
stock muffler....no fancy muffler needed. It was fast, and the vertical had
to be seen to be believed....trust me, it was impressive.

We were flying in a 30-40 mph wind to boot. [X(]

FBD.

JT Hammer

Hey, now your getting me excited! My S.T. 90 is at the post office so can pick it up on Mon. I already have a clamp type mount that will fit it so only need to fit it to the firewall of the Tiger Arrow and she's ready to fire-up. Ubfortunately it's minus 20 here at the moment - much to cold to be starting an engine. Maybe it will warm up in a couple of days. I'll keep you posted on my progress. There sure is a lot of controversy re the carb being lousy or good. I have a rep of never having trouble with my engines starting or running, so will remain optimistic. Had a s.t. .45 abc year before last, and really liked that engine. Sold it to a friend who had a fly-away with it. It was found last spring after a cold snowy winter. He cleaned it up and it runs good as new!

JT

SPEED JUNKIE

My Feedback: (14)

For $119.00 brand new the Super Tiger .90 is one great little engine![sm=thumbup.gif]
Easy to start, simple to adjust and lot's of power!
Can't go wrong!
Cheap, powerful and easy to use!
I wish my girlfriend had those trait's!
SJ