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Jaap Nerdy Gurdy, Assembly Instructions Manual

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Nerdy Gurdy

Assembly instructions

This manual describes how to assemble a 

version 6.

  

2

 Nerdy Gurdy kit. Go to 

http

  

s  ://www.nerdygurdy.nl

 for more info about these instruments.

Changes in v6.1

•

Dual strap pins added

•

Bridge updated to increase volume

•

Old version of drone bridge removed

•

Redundant plate removed from lid assembly

•

Tangents changed to increase tuning range

•

Front bearing support improved, to increase volume

•

Added adjustment screws to buzzing bridge supports

•

Buzzing bridges and drone supports moved backwards (mainly to make adjustment of buzzing 
bridges accessible)

•

Holes in top plate removed

•

Full overhaul of the manual

•

Various small aesthetic and functional changes

Changes in v6.2

•

Removed support plates for strap pins on the outside (not needed and hard to make them look 
nice)

•

Changed buzzing bridge supports to include a nut, instead of screwing directly into the plastic

Jaap Brand
The Netherlands

manual v6.2.1: fixed definition of string tuning, page 27

Nerdy Gurdy assembly instructions

CC BY-NC 3.0

Jaap Brand, 2021-01-08

Summary of Contents for Nerdy Gurdy

Page 1: ...ded adjustment screws to buzzing bridge supports Buzzing bridges and drone supports moved backwards mainly to make adjustment of buzzing bridges accessible Holes in top plate removed Full overhaul of the manual Various small aesthetic and functional changes Changes in v6 2 Removed support plates for strap pins on the outside not needed and hard to make them look nice Changed buzzing bridge support...

Page 2: ...ueing it is wise to assemble the parts without glue so that you re sure how they fit together You can assemble most of the instrument without glue to get an idea of how the parts go together It s best to read through the whole sequence before starting If you do something wrong it is possible to release wood glue by heating it e g with a hot air gun Please note If you live in a very hot and or humi...

Page 3: ...ers 6x NG 31 wooden violin pegs 2x NG 32 threaded rod M8 6 5cm 1x NG 33 threaded rod M8 22cm 1x NG 34 strings 1x 1x trumpet C 1x trumpet G 1x bourdon high C cello G 1x bourdon low G cello C 1x printed parts 1x NG 1 backplate glueing help 1x NG 2 Upper trumpet edge support 1x NG 3 buzzing bridge support lower 1x NG 4 buzzing bridge support upper 1x NG 5 buzzing bridge 2x NG 6 Bearing holder ring 2x...

Page 4: ...The complete kit tuners NG 31 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 4 ...

Page 5: ...3 Strap pin alignment Tool NG 1 Backplate glue tool NG 2 Trumpet edge support NG 3 Lower dog Support NG 4 Upper dog Support NG 5 Buzzing bridges dogs NG 6 Bearing rings NG 7 Shaft nut NG 8 Drone support Bush NG 9 Strap pins NG 10 Shaft NG 34 Knob NG 11 Violin tuning pegs NG 31 Strap pin inner support plate NG 13 High tangents 28x NG 15 Low tangents 20x NG 16 ...

Page 6: ... Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 6 Screws 3 5 x 17 7x NG 23 Bolts M3 x 10 4x NG 19 Bolts M3 x 12 2x NG 20 Screws 2 5 x 13 4x NG 22 M3 nut 4x NG 18 Bolts M3 x 20 2x NG 21 bolts M2 5 x 10 48x NG 29 Screws 3 5 x 20 NG 24 Bearings 4x NG 28 M8 nuts 8x NG 30 M8 locking nut NG 17 Ground ringterminals 4x string holders NG 27 8 8 mm washers 6x NG 25 A strip of felt...

Page 7: ... Some tools screw drivers 13 mm spanner small drill etc Some basic woodworking skills and patience Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 7 ...

Page 8: ...e parts are nicely centered You can use mating parts to check alignment picture below You can use some books to press the parts together There should be a plate thickness all around the glued on ridge Bottom plate only use them to align don t glue these yet Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 8 Use these parts to check alignment ...

Page 9: ...Top plate only use them to align don t glue these yet Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 9 Use these parts to check alignment ...

Page 10: ... support Combine the two plates that will support the front bearing Use parts NG 28 and NG 7 Assemble the bearing Assemble the head Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 10 ...

Page 11: ...Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 11 Make sure these edges are touching ...

Page 12: ...Use these parts to check alignment Mount the head bearing support and rear between the top plate and bottom plate Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 12 ...

Page 13: ...Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 13 ...

Page 14: ...re that tabs are fully inserted into the slots Make sure that all surfaces are glued together well especially at the rear of the instrument This is necessary to resist the force of the strings Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 14 Make sure the parts are glued together along these lines ...

Page 15: ...e to replace it It s recommended to file a bit of a V shape in the bridge pieces so that each string touches the bridge just at the end This ensures that the two strings of different thickness have the same effective scale length Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 15 ...

Page 16: ...Assemble the tailpiece use parts NG 18 and NG 19 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 16 ...

Page 17: ...ng together Use two of the M3 bolts to make sure that there is no glue in the nuts Place the bolts wedge parts and bridge segments Don t glue these they need to be adjustable with the bolts Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 17 ...

Page 18: ...ooves should be filed into the bridge segments so that you re sure that the string is touching it at the front use parts NG 32 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 18 ...

Page 19: ...the rear cover pieces together use the glue tool NG 2 to align the two parts and then discard the printed part Assemble the keybox Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 19 ...

Page 20: ...Glue the lid pieces together Assemble the drone bridge support use parts NG 21 and NG 9 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 20 ...

Page 21: ...e supports for the buzzing bridges Put the M3 nuts into the buzzing bridge supports use parts NG 4 NG 5 NG 18 use parts NG 19 NG 20 NG 6 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 21 ...

Page 22: ...u may want to lacquer or paint your parts at this point in the assembly before mounting the key box to the body Glue the key box to the body Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 22 ...

Page 23: ...raight part e g the lid to align the parts It is easiest to temporarily remove the support of the buzzing bridge when you do this to avoid gluing it to the to plate Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 23 ...

Page 24: ... need to glue the tail piece in place but it makes it a bit more stable Assemble the machine heads Mount the wooden spacer rings on both sides of the head Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 24 ...

Page 25: ... with the wooden spacer on the inside and an extra washer on the outside You do not need the the little screws that come with the tuners but if you can find a way feel free to put them in Use part NG 31 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 25 ...

Page 26: ...p of the short keys Notes The numbers are on the top of the keys That s the side on which you need to stick the extra layer Assemble keys and tangents Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 26 ...

Page 27: ... of keys dropping back Use parts NG 15 NG 16 NG 29 Assemble the shaft The knob is fixed with a locking nut red circle Alternatively you can glue a regular nut into place Use parts NG 30 NG 31 NG 33 NG 28 NG 17 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 27 ...

Page 28: ...nted ring is screwed to the back plate to secure the bearing 2 x screw 2 5 x 13 use parts NG 22 NG 28 NG 7 use parts NG 8 NG 30 NG31 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 28 ...

Page 29: ...he instrument You can also attach a Y strap like these from Sergio González http www hurdygurdystraps com There is a small tool included that you can use to accurately place the strap pin support plates Use parts NG 1 NG 13 NG 10 NG 24 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 29 134 mm 173 mm ...

Page 30: ...The plate goes on the inside and is meant to divide the force over a larger area use parts NG 10 NG 23 Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 30 ...

Page 31: ...eptable and can t be completely avoided with printed and laser cut parts Most important is that the wheel is nicely round so that it touches the strings constantly when you turn it If you don t like the wobble you can try reversing it If the shaft is not perfectly straight you may need to true the wheel after you assemble it Rotate it by hand and apply a scraping iron or horizontal chisel until it...

Page 32: ...Mount the back plate use parts NG 27 NG 23 Mount the strings Nerdy Gurdy assembly instructions CC BY NC 3 0 Jaap Brand 2021 01 08 Page 32 ...

Page 33: ...outside the adjustment range too much force or too little o If the force is too little you can sand down the bridge pieces or deepen the recess with a file o If the force is too much you can raise up the bridge pieces a bit by adding a few strips of paper under the bridge pieces The strings can be muted at the front Upper trumpet in playing position both trumpets muted Nerdy Gurdy assembly instruc...

Page 34: ...uzzing are Force of the trumpet string on the wheel Amount of rosin on the wheel Amount of cotton on the string The direction in which the tensioning string tirant pulls the string sideways And according to some people The direction of the wind The color of your eyes The position or Ursula Major in the night sky Yesterday s BitCoin exchange rate etc you get the point Nerdy Gurdy assembly instructi...

Page 35: ...on method is in many ways different from traditional instruments It does however sound pretty good and it is very playable And because of the material and the method of construction it is very stable New players will still need to learn how to properly apply rosin to the wheel and cotton to the strings But there are many tutorials online if you don t have experienced players who can teach you Ensc...

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