![1F97E5DD-545B-4EE8-AA8F-5185C75C07D7.jpeg 1F97E5DD-545B-4EE8-AA8F-5185C75C07D7.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244501-1F97E5DD-545B-4EE8-AA8F-5185C75C07D7.jpeg)
![C7C482A9-E00D-48EE-9AFE-3D345772CE7E.jpeg C7C482A9-E00D-48EE-9AFE-3D345772CE7E.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/243/243874-C7C482A9-E00D-48EE-9AFE-3D345772CE7E.jpeg)
![8CBF54A0-8DEF-4B20-8E96-0C3DD1DA61D7.jpeg 8CBF54A0-8DEF-4B20-8E96-0C3DD1DA61D7.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/243/243871-8CBF54A0-8DEF-4B20-8E96-0C3DD1DA61D7.jpeg)
![D95891B9-084C-44F1-8C7F-B8DDDD4F2D5B.jpeg D95891B9-084C-44F1-8C7F-B8DDDD4F2D5B.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/243/243868-D95891B9-084C-44F1-8C7F-B8DDDD4F2D5B.jpeg)
![97D292E7-E983-464B-991A-023C3FCD90A2.jpeg 97D292E7-E983-464B-991A-023C3FCD90A2.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/243/243873-97D292E7-E983-464B-991A-023C3FCD90A2.jpeg)
![1CA5EDB7-5E26-44FF-B678-BEE4195E549F.jpeg 1CA5EDB7-5E26-44FF-B678-BEE4195E549F.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/243/243869-1CA5EDB7-5E26-44FF-B678-BEE4195E549F.jpeg)
Initially a basic matte black 26” cruiser, with internal 3-speed gears and coaster brake. Reborn in a phosphoric acid rain as Acid, full suspension chop shop 29+ monster cruiser
The initial idea was to just give the bike a post apocalyptic look, Mad Max: Fury Road style, by grinding off paint and let the exposed steel rust, fit external gears and knobby tires.
![1690704787304.png 1690704787304.png](https://cdn.imagearchive.com/ratrodbikes/data/attach/243/243876-1690704787304.png)
-Then it all went a bit out of control...
Wider tires, 1.95” top vs 3.0” bottom
![7452204B-9717-4119-A8C1-8EE7809317FA.jpeg 7452204B-9717-4119-A8C1-8EE7809317FA.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244065-7452204B-9717-4119-A8C1-8EE7809317FA.jpeg)
This required a wider and longer forks front and rear.
Let’s build a full suspension bike from a fork and a scissor jack
![0D7FFC0A-171C-44E6-911C-193AB3CCED41.jpeg 0D7FFC0A-171C-44E6-911C-193AB3CCED41.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244066-0D7FFC0A-171C-44E6-911C-193AB3CCED41.jpeg)
![77E98319-A467-46A4-8D91-F02C5F44A32B.jpeg 77E98319-A467-46A4-8D91-F02C5F44A32B.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244067-77E98319-A467-46A4-8D91-F02C5F44A32B.jpeg)
Still VERY tight clearance with a 3.0” tire on a 65mm rim
![672022A2-2CFD-4D37-8D35-74D74F249CC9.jpeg 672022A2-2CFD-4D37-8D35-74D74F249CC9.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244068-672022A2-2CFD-4D37-8D35-74D74F249CC9.jpeg)
Shock legs. Final version left vs prototype right
![66ED8301-36E2-40FF-B3BC-583C9B1892A1.jpeg 66ED8301-36E2-40FF-B3BC-583C9B1892A1.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244072-66ED8301-36E2-40FF-B3BC-583C9B1892A1.jpeg)
Shock in place
![A3B5184A-858A-4BA4-A7D9-EDE3B78E635E.jpeg A3B5184A-858A-4BA4-A7D9-EDE3B78E635E.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244073-A3B5184A-858A-4BA4-A7D9-EDE3B78E635E.jpeg)
Long travel rear swing demands more chain take up than the rear derailleur can handle, so here is its assistant
![6F62AD27-3DDB-4032-AE4E-414BB97C9D4D.jpeg 6F62AD27-3DDB-4032-AE4E-414BB97C9D4D.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244074-6F62AD27-3DDB-4032-AE4E-414BB97C9D4D.jpeg)
Headlight prototype
![E6971DA1-CCCB-478A-BB02-32F9848E2F49.jpeg E6971DA1-CCCB-478A-BB02-32F9848E2F49.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244069-E6971DA1-CCCB-478A-BB02-32F9848E2F49.jpeg)
Metal version
![2C1EC880-6D87-4061-BEF9-DE8031A6D93F.jpeg 2C1EC880-6D87-4061-BEF9-DE8031A6D93F.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244070-2C1EC880-6D87-4061-BEF9-DE8031A6D93F.jpeg)
Final version
![47FFFE22-6BBA-4327-9596-3D0E41CEF2A5.jpeg 47FFFE22-6BBA-4327-9596-3D0E41CEF2A5.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244116-47FFFE22-6BBA-4327-9596-3D0E41CEF2A5.jpeg)
First version tank plate. Turned out to be stainless steel. Unacceptable!
![C7D411C6-1589-475B-8A79-6C8E3E520069.jpeg C7D411C6-1589-475B-8A79-6C8E3E520069.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244071-C7D411C6-1589-475B-8A79-6C8E3E520069.jpeg)
Maybe insert a logo in the tank plate
![5423D906-DF08-4BA9-95BA-AC04B76246E0.jpeg 5423D906-DF08-4BA9-95BA-AC04B76246E0.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244075-5423D906-DF08-4BA9-95BA-AC04B76246E0.jpeg)
Digital sketch
![E97BE283-F425-406D-9A10-E5C568019E5B.jpeg E97BE283-F425-406D-9A10-E5C568019E5B.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244078-E97BE283-F425-406D-9A10-E5C568019E5B.jpeg)
Making of steel version
![95646631-4F6D-4F30-A636-EDA7C3988FFD.jpeg 95646631-4F6D-4F30-A636-EDA7C3988FFD.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244076-95646631-4F6D-4F30-A636-EDA7C3988FFD.jpeg)
Done!
![FAA2501F-EBC7-44E7-9993-8D2FE4DF0FC6.jpeg FAA2501F-EBC7-44E7-9993-8D2FE4DF0FC6.jpeg](https://cdn.imagearchive.com/ratrodbikes/data/attach/244/244077-FAA2501F-EBC7-44E7-9993-8D2FE4DF0FC6.jpeg)
Frame: | Cruiser by Biltema, CrMo. Acid washed | ||
Fork: | DKW Diamant, anno 1938. Threaded 25.4mm steerer, non-BSA thread | ||
Brake mount: | DIY, L-profile 25x25mm Q235 steel | ||
Rear suspension: | Preferred usable travel 159mm. Travel after sag 117mm. Sag set at 42mm (=26% of total) at 85kg rider weight + bike unsprung weight. Spring travel used <54mm. Spring preload 46mm. | ||
Rear swing arm: | Upper joint: scissor jack | ||
Bifurcation: part of fork 26" MTB 'Action', CrMo | |||
Lower legs: from 26" fork cruiser by Biltema, CrMo | |||
Rear scissors: | Upper shanks 145mm, Lower shanks 109mm. 18x3mm C9D (SS 1312), 'bondjärn', semi hard | ||
Brake caliper mount: | DIY, L-profile 25x25mm Q235 steel | ||
Rear shock: | Legs: 18x3mm C9D (SS 1312), 'bondjärn', semi hard, tapped M5x0.75mm | ||
Springs: SR Suntour SF15XCM-DS-RL(LO) HARD, art.no. 2220591060, length 232mm, spring const. (est.) 8.26 N/mm | |||
Spring stops: 20mm pipe from hydraulic jack handle, recessed screw holes | |||
Headset: | XLC steel threadless Ø 25.4/30.0/27.0 mm | ||
Bottom bracket: | Shimano BSA square taper 114mm | ||
Shifters: | Deore M592 3x9 | ||
Chain tensioner: | Shimano Altus Rear Derailleur Long Reach RD-CT92 flipped | ||
Rear Derailleur: | Shimano Deore RD-M592-SGS Shadow Rear Derailleur long 9-speed | ||
Brakeset: | Shimano BR-MT200 hydraulic flat mount | ||
Brake rotors: | Shimano SM-RT26 6-bolt 180mm/160mm | ||
Chain: | Double CN-HG701 11s | ||
Crankset: | Shimano Deore M592 2x9 | ||
Stem: | 1950's 21.0mm | ||
Bars: | Steel, mid rise | ||
Seatpost: | Hydraulic jack handle, 20mm | ||
Saddle: | Brooks B67 | ||
Grips: | RFR lock on | ||
Wheel front: | Gippieme Equipe Roccia Disc. IS 6 bolt. | ||
Tire front: | Maxxis Minion DHF TR EXO 29+ 3.0" | ||
Tube front: | Maxxis 29" | ||
Wheel rear: | Rim: 65mm Double Wall, OLD 135 mm, ETRTO 622x65 mm. | ||
Hub: JoyTech D762DSE, 8/9/10s HG freehub. Disc mount : IS 6 bolt | |||
Tire rear: | Maxxis Minion DHF TR EXO 29+ 3.0" | ||
Tube rear: | CrusierShop UltraFat 3" | ||
Cassette: | Shimano Deore 11-34 9s, HG | ||
Pedals: | Square bear trap | ||
Lights: | Vicma Beta/KTM Ark Projectors | ||
Light source: | LUXTAR LED Onyx H8, 4 chip, actual lumens 1840, 6400K, 1.4A, actual power 17W, IP67 | ||
Rear suspension movement video
Timelapse video:
Build thread:
https://ratrodbikes.com/threads/acid-reborn.118442/
Attachments
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