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Old 11-20-2019, 07:49 PM
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New Motor box for 3DHS 91" Yak-55

What do ya'll think the best way to loosen the glue joints up to remove the pieces of wood I am going to replace. I have the new wood for the motor box coming in tomorrow from 3DHS---Smitty
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Old 11-20-2019, 08:17 PM
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Already done this to a 89"3DHS Slick,use a heat gun to loosen the glue joints.They will just fall apart and you can replace with new and never tell the difference.
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Old 11-20-2019, 08:33 PM
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Ok, Thanks.---Smitty
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Old 11-21-2019, 05:58 PM
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Closetguy, did you you use everything they sent you or did you modify it some?---Smitty
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Old 11-21-2019, 06:51 PM
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If I remember rite,I think it called for the removal of the wingtube mount also.I cut the new wingtube mounts off and butted the new pieces up to the original wingtube mounts.Then used triangle balsa on both sides of each mount to make a stronger meeting of the two.I didn't want, or need to remove the old wingtube mount, it was not damaged in the crash. Only damage I had was to the cowl which I bought new and the engine box.Everything behind the box was untouched and like new,wings included.Still flying that plane today with no problems at all and no new trim settings were needed.
I used a commercial style heat gun for stripping paint.You just need to be careful because it has enough heat to start wood to burn.
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Old 11-21-2019, 07:59 PM
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Yeah that is what I am planning to do also. I made a cut about a inch and half in front of the wing tube and going to replace everything from there forward. Thanks for the info.--Smitty
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Old 11-22-2019, 07:20 AM
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The motor box kit offered by 3DHS is another reason why I like their planes.It makes for a easy repair that would normally get a plane trashed.Once repaired you can't tell that anything was ever done to the plane.Best of all,with parts inter locking with the original,the engine,spinner,cowl,lines up perfect.I don't know why more companies don't offer this option.The parts are already made and available,all they need to do is offer it. Instead of parts like side force generators or wheel pants.
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Old 11-22-2019, 02:33 PM
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I agree with you on the replacement parts. Chief does this also. If this Yak didn't fly so good I would have just bought something else, but it flies real nice with that DA-70 I just put on it.--Smitty
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Old 11-22-2019, 03:21 PM
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Yep I feel the same way about their 89" Slick,that is out of production now,just wanted to keep it alive as long as possible.
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