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OS 25 fx on 9x6 in ripmax rapier ? good or bad

os fx ripmax rapier

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crispin church22/06/2013 20:26:37
442 forum posts
102 photos

got on ebay with engine in it total weight 1.75kg is the os 25 fx big enough i dont want to set any speed records just steady circuits


Turbycat22/06/2013 21:27:22
594 forum posts
55 photos

Should fly. I built a delta last year with a Thunder Tiger GP 25 on the front. That flew well but was no speed machine. It did have quite a thick section tho'. I upped the engine to a Jen 37 with a tuned pipe. Went some then!! Remember a delta will fly very slowly if required, as for landing, but be equally capable of using all the sky you have available and a few feet more!!


Edited By Turbycat on 22/06/2013 21:27:52

Paul Marsh22/06/2013 22:38:12
4088 forum posts
1231 photos

Will be a bit boring! Had a OS 40SF and made me yawn. Had trouble getting fast enough hand launch without it flopping on the ground. Put a SC 52 in it and much better.

You can also do this: put TWO SC 52's one pulling and pushing. Vertical on one, imagine two going. Model met it's demise, but was a nightmare to launch safely...

langar2007 (59).jpg

Edited By Paul Marsh on 22/06/2013 22:56:23

Turbycat23/06/2013 03:00:53
594 forum posts
55 photos

Ha Halaugh. That's just mad yes. Gotta go build another delta now!!


Peter Miller23/06/2013 08:33:32
11347 forum posts
1337 photos
10 articles

I remember a piece in RCM&E about 25 to 30 years ago.

Bloke launched a pusher with an Irvine 40 in it. Took three fingers clean off. Nasty pictures.

I will not even touch a pusher model now, seen too many accidents with props in unusual places.

crispin church23/06/2013 19:58:27
442 forum posts
102 photos

so mite be better to fit a os la blue 46 i got but not sure if that dose have more power than the 25 fx as herd la are crap ?

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