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Gp-4 Spruce Kit

$13144.70/Kit
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Part# 02-25200

Overview

Our spruce kits are designed to encourage the builder to personally produce the components for his aircraft with a minimum of investment in shop equipment. A table saw is an asset, but an aircraft can be built completely with the use of only hand tools.

The complete kits listed below contain all the spruce required for the aircraft. Kits marked ** contain the wing and aileron spars finished to the net dimensions called out in the plans, without beveling. In all other kits the wing and aileron spars are S2S (surfaced two sides) spar stock that is to be cut to the finished pieces. The rib and stringer stock are supplied S2S to the net thickness required and are to be run through a table saw one way to produce the finished pieces. One board 1/4" thick x nominal 6" wide will yield about 16 pieces of finished 1/4 x 1/4 capstrip.

Without the use of a table saw, the builder should order only a Spar Kit, which includes the wing and aileron spars finished to net dimensions (unbeveled), then order the capstrip and milled stock as needed. No plywood, glue, nails or other supplies are included in our spruce kits. All materials must be ordered individually as priced in this catalog. Spruce kits are well packed, shipped by truck and insured for value by the carrier. Export orders are solicited. Prompt and efficient handling is assured. Since all spruce is milled to individual requirements and cannot be stocked in finished condition, payment in full is requested with order.

Spruce kits are produced from materials lists which are believed to be accurate. However, since designers may modify certain dimensions after the original plans are released, we urge the builder to verify sizes and current price before ordering.
   
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Reviews

If your planning on building one of these, your welcome to come to my hanger and see one and sit in it. It delivers the performance you want, but better not be 6 tall, and dont plan on carrying much. Mine is for sale, whole or part. (I cant afford two planes and three hanger fees). Here is a video of it, mine is located at KSEE. Eagle alley, hanger 38. Here is a video of the plane, build pictures to follow. https://www.youtube.com/watch?v=kxAqpaZQ7DU https://www.youtube.com/watch?v=vbaIsrJjVVs I hope this helps in your decision, wood is very underrated and strong, just have a hanger to avoid moisture, woods enemy #1. dan

Daniel J
March 11, 2025

Q&A

Please note, Aircraft Spruce ®'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce ® assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is the empty weight listed for the GP 4 inclusive of the recommended engine and instruments?

Yes this is the standard empty weight once it is flight ready. However, empty weights can vary on each project, so we recommend our customers consult with other builders of the GP 4 for more detailed and precise information. Click Here to go to the Aircraft Spruce Builders Forums.

Q: For the materials to build the plane, do I need to buy all three steel, plywood, and spruce kit?

Yes, the materials in all 3 kits will be required for construction of the aircraft.

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