Sport Planes (Formerly I/C & Gas Conversion) Discuss I/C or Gas Conversions, Aerobatic Planes and Sport Aircraft

Seagull Spacewalker II conversion to EP

Old 04-11-2007, 08:14 PM
  #1  
ken cz
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Wink Seagull Spacewalker II conversion to EP

Hi,
Has anyone switched a Seagull Spacewalker II over to EP?
I am in the process now and wonder what other folks are using for power combos?
Currently I have a Electrifly Rimfire 42-50-800 installed with 14.8v 4300 EVO ( 2 2150 paralleled) and she puts out about 610 watts on the Watt meter using an APC 13x6.5 E prop. Will check soon with a 13x8.

The AUW is about 6lbs -- that gives me about 100 watts per pound so that should be good for general Sport Flying with mild aerobatics with decent duration times. Can't wait to get it up!

Anyone else converted one? Any tips for new guy?
Ken
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Old 04-20-2007, 07:45 PM
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ken cz
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Anyone have any feedback or am I the first?
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Old 05-11-2007, 09:08 PM
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Merv
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I just finished an electric conversion using a Jeti 45-3 motor & Jeti ESC. Since the plaane seemed tail heavy, I used 12 NiMH 300 mAh batteries in the fuel tank area to balance the plane. AUW is 7#-3 oz. The plane flies slow, but well enough to do rolls & loops. No nasty characteristics.

Where did you mount you battery pack?
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Old 05-14-2007, 09:28 PM
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ka0hyz
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Ken
^10watts is plenty of power for 6lbs. models and sport flying.
thomas(ka0hyz)
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Old 05-15-2007, 02:39 PM
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Merv
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My first post needs a correction: I used 12 3300mAh batteries, not 300 mAh.
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Old 01-07-2012, 03:53 PM
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moosehunt2007
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Hey, guys, I found this thread and wondered, where did you put the battery so you could get it out without taking the plane apart? I'm going to be converting one of these very soon and was looking at the fact that the fuselage is solid with nowhere to put a battery down in..... Thanks.
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Old 01-07-2012, 08:02 PM
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ken cz
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I made the 'floor' of the foward Cockpit position removable by carefully cutting it out, adding side supports channels at the correct height, adding mini-magnets to the 'floor' and the side supports for retention.
Repainted it all a flat black, glued in the Pilot andit works like a charm.
Make the opening as large as possible.
The battery will then load from the top and be positioned forward of the cockpit.
You will have to do some structure mods to get the battery in and it takes a bit of time to trim and figure it all out.
In the end, it all works well.
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Old 01-10-2012, 06:04 AM
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moosehunt2007
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So, how did you adapt the motor mount for the odd spaced holes? I was just looking at it because I brought it home last week and it seems they're oddly spaced.....
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Old 01-10-2012, 06:11 PM
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ken cz
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I don't have time to pull my cowl right now but as I recall I centered the motor mounts based on the existing holes and centerline of thrust, then drilled new holes for the electric motor mount.
I used nylon standoffs (aluminum are better) or wood dowels to get the correct position forward for prop to cowl fit.
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Old 01-10-2012, 06:32 PM
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moosehunt2007
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Ok, that's what I was thinking about doing. I have some aluminum standoffs made for that so it'll be perfect. I'm going to be using the NEO 46 motor. Thanks for the help.
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Old 01-10-2012, 08:27 PM
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ken cz
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Your welcome.
Mine flies OK on a 4S lipo but really flies better with a 5S. A 4000mAh pack gives me a solid 8 minutes of Sport type flying. Todays newer Lipos will probably perform better. Mine are from about 3 + years ago.
I'm using a Rimfire Outrunner equal to a .32 size.
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Old 06-02-2012, 03:00 AM
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moosehunt2007
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I finally got my conversion done.... It's taken me since January but it's complete and looks great. I am running a neodym 46 motor and am putting out 700 watts peak with it pulling around 45 amps on the ground. I'm hoping for a maiden tomorrow. I'm running 2 Hyperion 4S 2200mah batteries in parallel making it a 4400. I'll be curious to see how that works out. Hopefully it's got enough power to get a maiden in at least. I might look into bigger batteries later when I have the money, though. I think the motor and ESC are rated at 3-6S, not sure will have to go back and look. Thanks for the hints and I'll let you know how the maiden goes.
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Old 06-20-2012, 03:10 AM
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Maiden went very well, it flew great!! One thing I did find out is that you need to use nylon lock washers for the outside of the wheel pants that connects to the gear. On my second flight one of the wheel pants, wheel and all came off and fell into a cow pasture outside the field after a few flights. I came in to land and it sheered off the landing gear due to not enough speed. I fixed it that night, simple epoxy job, and will go fly it when I get a chance.
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Old 12-08-2016, 06:43 AM
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AkldRob
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Originally Posted by ken cz View Post
I made the 'floor' of the foward Cockpit position removable by carefully cutting it out, adding side supports channels at the correct height, adding mini-magnets to the 'floor' and the side supports for retention.
Repainted it all a flat black, glued in the Pilot andit works like a charm.
Make the opening as large as possible.
The battery will then load from the top and be positioned forward of the cockpit.
You will have to do some structure mods to get the battery in and it takes a bit of time to trim and figure it all out.
In the end, it all works well.
Would you have any pictures of th conversion? if ypu could
Thanks
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Old 12-08-2016, 08:10 AM
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solentlife
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I keep looking at the VQ models version similar to Seagulls .... this has provision for battery change built in ...

Its one of those models that you love the look of but not sure if its really the one you want ...

Nigel
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Old 12-08-2016, 12:57 PM
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dahawk
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VQ makes some nice models and I've seen the spacewalker fly. Very nice. I was a 4 stoke 60 size though. I think HK still sells the ARF.
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