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Old Jun 26, 2015, 01:39 PM
mkpatrick is offline
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I've been doing some research towards consideration of buying an Sbach.
I've looked at the reviews for the FMS Sbach and found out it is very underpowered according to reviews.

As I do just a quick look around for a possible candidate, I stop here on this thread and ask if there is any big flaws or problems with this Dynam Sbach? Its a bit smaller than I wanted but there doesn't seem to be much choices in electrics.
What are some of the major complaints on this one if any?
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Old Jun 26, 2015, 03:55 PM
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I have the dynam sbach and it is a dog wouldn't recommend it. it has been a hangar queen for two years now
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Old Jun 26, 2015, 05:33 PM
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Quote:
Originally Posted by dbdukeboy View Post
I have the dynam sbach and it is a dog wouldn't recommend it. it has been a hangar queen for two years now
Yup. Mine's been hanging on the wall for a couple of years too.
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Old Jun 26, 2015, 09:19 PM
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Well that settles that then....

Is there an Sbach you recommend? I've sort of looked at the Hangar 9 with an electric setup but that is a lot of build for my skill level and pricy too.
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Old Jun 26, 2015, 10:14 PM
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The air frame for the dynam isn't bad. You could swap out the motor for something better. A guy I fly with put a motor from heads up Rc in his dynam sukhoi and it really came to life. I don't think it will hover but it has plenty of speed now. He really likes it. I will probably do that to mine this winter. Sorry I don't remember what motor he used I do know it is a emax motor from heads up rc
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Old Jun 26, 2015, 10:32 PM
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Hovering is what I wanted to do, LOL
Oh well, I'll keep looking...
Thanks!
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Old Jun 27, 2015, 01:29 AM
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Quote:
Originally Posted by dbdukeboy View Post
The air frame for the dynam isn't bad. You could swap out the motor for something better. A guy I fly with put a motor from heads up Rc in his dynam sukhoi and it really came to life. I don't think it will hover but it has plenty of speed now. He really likes it. I will probably do that to mine this winter. Sorry I don't remember what motor he used I do know it is a emax motor from heads up rc
My Sbach's motor was the best part of the whole plane! I had no complaint as soon as I swapped the stock prop for a better one. It easily has the power to hover and its vertical is completely ballistic. No... it is my airframe... the wings are warped with anhedral, the incidence is off. You pull up to do a hammerhead, slow down, hit the rudder and it ends up straight and level. Weird!
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Old Jun 27, 2015, 07:36 AM
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4 inch tires for grass fields

I agree that the motor was/is the best part of the Dynam SBach. It's plenty strong for me. The majority of the problems I had getting it airworthy was the servos and servo control horns. The LG needed major reinforcement as did the motor mount. Most of it is documented in my blog here. http://www.rcgroups.com/forums/showthread.php?t=2353072

I recently put 4 inch wheels on my Dynam SBach so I could take off and land in a fairly rough grass field. In fact when the park maintenance crew cut the fields with their tractors in early spring, they left tire tread marks everywhere. It was impossible to use until the grass came back later this spring to help cover the tracks. The rain has helped fill them in some too.
4 inch tire ($8.99) link: http://www.lazertoyz.com/Foam-Wheels-4_p_541.html
Axle ($3.99 if added to tire order; $4.99 separately) to go with 4 inch tires link: http://www.lazertoyz.com/4-Axle-and-...set_p_542.html

LazerToyz.com also has 4.5 inch Tundra tires with mounting hardware if you wanted to go that large. ($14.99)
http://www.lazertoyz.com/Fenix-120-a...ear_p_597.html

I used #6-32 x 2in bolts with lock washers and #6-32 plain nuts. I wanted to use lock nuts but Fastenal didn't have them in stock. I was afraid the 1/4 inch bolt would take out too much metal in the LG and I didn't want to drill out that much of the wheel either. I ended up putting aluminum rods in side the wheels as spacers. I know. It's not very scale but you gotta do what you gotta do to fly where you can.
Don
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Old Jun 27, 2015, 01:29 PM
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Iv had 2 sbachs and a sukoi. Guess Iv been lucky, all 3 hovered at half throttle or less. I agree the prop needs changed. When I tested about 3 years ago a 14x7 apc pulled the same watts as the stock 13x6 with far better performance in the air.
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Old Jul 25, 2015, 03:21 AM
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Quote:
Originally Posted by metasim View Post
I just received my Sbach from Grayson Hobby. I was impressed with how fair their shipping price was for a box as big and heavy as it was. They shipped it right away and I had it in a couple days. I really recommend ordering from them since they are a LHS, yet work hard to provide affordable planes and accessories.

Each of the pictures here has comments about what I saw, items to note, and in some cases descriptions of flaws in the finish and final assembly.

The short review is that the foam design and molding process are top notch, with the pieces fitting together with precise tolerances. However, the "ARF" part of the manufacturing, particularly the "fit and finish" are marginal at best. Sloppy painting throughout, and the selection of horns and linkages are junk. Unfortunately the horns are pre-glued on the ailerons, and their replacement is a must.

I like having the power system pre-configured (assuming the ESC holds up), but in some ways it would be even better value if you could just buy the airframe, or buy it all in kit form, as the QC on the last stage is a mess. Still, for the price, the air frame seems top notch and alone is a fantastic value. I just would hate to see people destroy it due to low-quality support components.

I hope to follow up with build pics if people are interested. Apologies if I've provided too much detail (is that possible in RC?) :-)

nicely done !!
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