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1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

#1 2013-11-11 6:11pm

chuckster
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From: Kentucky
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1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

1980 BMX Products Mongoose KOS Kruiser Project. “Ride to Live, Live to Ride” PIC HEAVY!!!

I’ve been gathering parts for a KOS Kruiser project over the last two years and finally reached the point where I felt it was ready to go. The color scheme and components changed a few times, and I thought it would be fun to document all the parts that went into the finished build. There is really nothing groundbreaking as far as restoration is concerned. But, I thought the thread might be useful for others and fun to see. So, here it is in the exact order as constructed.

Suzue gold high flange 36-hole flip-flop rear hub (2I) and front hub (2H) with flat axle. The spokes are Shuhn Lih steel 10 1/16 inch (256mm, 2.0mm) with Araya gold alloy nipples (16mm, 14 g.)
http://i.imgur.com/MQt90aC.jpg
http://i.imgur.com/VVc2bAl.jpg
http://i.imgur.com/fcTSuBp.jpg

The rims are Araya 7X silver (26 x 1.75) 36-hole that were in pretty decent shape. The side walls had some light scratches and brake rub and I wanted to smooth them out. I followed techniques outlined in jlewis’ “How to Shiny Side Rims”  thread http://bmxmuseum.com/forums/viewtopic.php?id=300861
I used a random orbital sander and went from 80/120/220/400 with the sanding. I skipped the buffing compound because I didn’t want them to be super shiny (like chrome) – just a clean finish with good braking power. I then polished the side walls with 0000 steel wool and Mothers Aluminum & Mag polish.
http://i.imgur.com/nTOqse2.jpg

I had trued wheels before, but had never attempted building them. However, after checking out caleb_k31’s “complete WHEEL BUILDING thread” http://bmxmuseum.com/forums/viewtopic.php?id=47611 I thought I would give it a try. Turns out the wheel building process was not as hard as I thought, and also quite enjoyable. I used my hand Park Tool stand and the usual tools of the trade and here is how they turned out.
http://i.imgur.com/Wwang5z.jpg
http://i.imgur.com/ITHTaUv.jpg
http://i.imgur.com/LePNLqM.jpg

Another great reference I found is “A Practical Guide to Wheel Building” by Roger Musson. Here is a sample page from his book that is very intuitive and easy to follow.
http://i.imgur.com/UpnGvex.jpg

The tires are Mongoose Winners’ Circle (26 x 2.125) red knobby skinwall that still had original release powder in the treads.
http://i.imgur.com/77yxelf.jpg
http://i.imgur.com/QhWyEjq.jpg
http://i.imgur.com/Z2ViDCT.jpg
The tires are looking sharp after mounting to the wheels.
http://i.imgur.com/TMCvffk.jpg

The frame/fork combo was purchased from jakehigh5 and was in fantastic condition! Here are some photos of the chrome KOS Kruiser forks with original decals.
http://i.imgur.com/aYHXxSZ.jpg
http://i.imgur.com/Jpcr7RR.jpg
http://i.imgur.com/YMliz6q.jpg
http://i.imgur.com/wEDSfhH.jpg
http://i.imgur.com/rwPYrA8.jpg

And finally, the star of the show: 1980 BMX Products chrome Mongoose KOS Kruiser frame with original decals. I gave the frame and forks a light cleaning with Autosol, fine bronze wool, and a microfiber cloth.
http://i.imgur.com/aysrbEu.jpg
http://i.imgur.com/kjTA3GN.jpg
http://i.imgur.com/rQM7Gwa.jpg

You can really see the dimpled texture of the original decals on the headtube and downtube. This frame/fork is really beautiful and the photos don’t quite do it justice.
http://i.imgur.com/ndYOM4C.jpg
http://i.imgur.com/2l0WquT.jpg

Someone added the “Ride to Live, Live to Ride” decal. It looks pretty cool, so I decided to leave it.
http://i.imgur.com/ylvPX0A.jpg

The bike is slowly coming together and looking good with the wheels mocked up.
http://i.imgur.com/8CEJqEM.jpg

Mongoose stamped 1” headset in excellent condition.
http://i.imgur.com/qYooZip.jpg

I finally upgraded to Park Tools HHP-2 headset press and found it to be a huge improvement from my homemade press that I’ve used for years.
http://i.imgur.com/LHcSgpr.jpg

Pressing in the headset cups.
http://i.imgur.com/F1014Pf.jpg

BMX Products Gold Stem with original decal.
http://i.imgur.com/gHGXTy7.jpg

Getting closer.
http://i.imgur.com/qfg13Y2.jpg
BMX Products stainless steel stamped Kruiser bars in excellent condition.
http://i.imgur.com/a3TdVyO.jpg

I would say that the handlebars were the hardest item to find after the frame/fork.
http://i.imgur.com/YcB59Gy.jpg

So, what’s going to power this KOS Kruiser?
http://i.imgur.com/8J4XT7K.jpg

Mongoose stamped 175mm one piece crank.
http://i.imgur.com/ikY6MP4.jpg

Mongoose stamped 28 tpi bottom bracket.
http://i.imgur.com/qNcMm6n.jpg

Sugino BMX spider (110 bolt diameter), Sugino BMX gold chainring (43T), and Sugino chrome stamped chainring bolts.
http://i.imgur.com/FpmpRcy.jpg

KKT FMX Lightning gold 9/16 pedals with Cat Eye RR-0217-GZ reflectors.
http://i.imgur.com/Q8tJUYF.jpg
http://i.imgur.com/NF5gx60.jpg
http://i.imgur.com/M3JPl2d.jpg

For pedal threads, headset bearings, cups, and seat post – I prefer to use Phil Wood grease. For the bottom bracket bearings and coaster brakes I like the thicker “tacky” Mobil 1 red synthetic grease.
http://i.imgur.com/wjGOw2z.jpg
http://i.imgur.com/IWSDimH.jpg

Crank setup is mounted and I’m digging the gold.
http://i.imgur.com/15BPH48.jpg
http://i.imgur.com/O6ryljX.jpg

Red & Gold – what a nice combination!
http://i.imgur.com/yPSLaIV.jpg

BMX Products Mongoose red 7/8 grips – original old school all the way.
http://i.imgur.com/YFz2aYb.jpg

BMX Products Mongoose vinyl padset.
http://i.imgur.com/cUOb5TR.jpg

Izumi gold chain (1/2 x 1/8)
http://i.imgur.com/ntmUOpd.jpg

Dia Compe gold pre-bent brake levers.
http://i.imgur.com/b325EAe.jpg
http://i.imgur.com/IehdlUs.jpg

Mesinger Mongoose stamped red vinyl quilted seat.
http://i.imgur.com/3OlssEK.jpg

Dia Compe gold two-piece seat post clamp.
http://i.imgur.com/MrblxGC.jpg

Redline chrome 7/8” seat post.
http://i.imgur.com/16fRk6a.jpg

Dia Compe gold MX-1000 brakes w/ Weinmann  semi-automatic adjusters.
http://i.imgur.com/56NKRYd.jpg

Dia Compe chrome 1 1/8” cable holders.
http://i.imgur.com/8GAxlQQ.jpg

Dia Compe stamped red brake housing.
http://i.imgur.com/E5Q1QOH.jpg

Putting the last pieces in place.
http://i.imgur.com/Qa625XN.jpg

Helix 3/8 frame savers w/stainless washer. I had never used these before and was very impressed.
http://i.imgur.com/LWdfrzb.jpg

All finished up and ready to ride.
http://i.imgur.com/SYL9L4F.jpg
http://i.imgur.com/sLJAZed.jpg
http://i.imgur.com/dqDKRaB.jpg
http://i.imgur.com/1AdxKy4.jpg

This bike rides like a dream and was a fun project all the way through. “Ride to Live, Live to Ride!”
http://i.imgur.com/nbUfwsu.jpg
http://i.imgur.com/73pw0ej.jpg
http://i.imgur.com/IjXyzR3.jpg

Last edited by chuckster (2019-12-11 4:53pm)

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#2 2013-11-11 7:29pm

Axel10
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From: In Canada on Treaty 7 Land
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Amazing thread!!!!

Beautiful KOS Kruiser coolcoolcool


I deleted my Twitter, facebook, instagram and linkedin. It increased my quality of life.

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#3 2013-11-11 10:00pm

its-all-good
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Looks great and all era correct besides the 90's freewheel.


Do yourself a favor, delete Facebook & Twitter now.

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#4 2013-11-12 3:51am

chuckster
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From: Kentucky
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

its-all-good wrote:

Looks great and all era correct besides the 90's freewheel.

Thanks for the heads-up about the Mongoose freewheel. I have a Shimano SF-MX30 that I can swap out. I was trying to keep the project as "era correct" as possible. Cheers!

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#5 2013-11-12 6:46am

RyanPartridge
Pro Member26" Cruisin' with a Coaster Brake
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Wow! Great job!!!

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#6 2013-11-12 8:07am

Pacecar69
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Very Nice!  I am working on building a Kos as well!


Looking for:
      CW Racing stuff...old school, retro
      Torker stuff....Torker T-bars, Torker Hubs, Torker stems, etc.
      REWARD paid for a tip that leads to me purchasing Kappa F/F/Bars/Stems/Decals/Seat Posts, Apparel, etc.
      Vector Freestyler, Vector Freeplay F/F, Vector bars, Vector Seatpost, Vector seat, Vector Unlimited F/S decals

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#7 2013-11-12 8:30am

Coco
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From: Regina, Saskatchewan Canada
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Super rad KOS.

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#8 2013-11-12 9:11am

1mongoose
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

I LIKE IT !!!!!!! NICE WORK ! coolcoolcoolcool

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#9 2013-11-14 7:52pm

CurtiswithaC
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

That might be the nicest KOS I've seen.  wink


Please feel free to call or text me with any questions on items I'm selling 407-212-9243 Curtis

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#10 2013-11-16 2:33pm

bmx brookes
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

That's a thing of beauty cool

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#11 2013-11-28 5:31am

chuckster
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Thank you very much for the kind words.

I hope everyone has a Happy Thanksgiving.

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#12 2013-12-08 7:51am

Oh Gee
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

I just looked under your bikes to fav it but not there?


WTB: 175mm, driveside pinchless Redline 401 arm

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#13 2013-12-08 5:09pm

cobra_standard
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

great build Chuck and awesome detailed documentation of the process.  The gold/red combo is great and the red Mongoose seat is a touch of class.
I'm inspired to get moving on my '82 build.  Now who has some Kos bars to sell me?!!  big_smile

Last edited by cobra_standard (2014-12-14 2:03pm)

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#14 2013-12-10 11:22pm

mongoosedrummer
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

KILLER KOS!!! WOW!!! That is one of the nicest and tasteful KOS Cruisers I've ever seen!!! beautiful job and great documentation of your project! Thanks for sharing! PS: I want first dibs should you ever decide to sell! big_smile


A "Squonk" is like a Mongoose only much harder to find...

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#15 2014-01-14 11:00pm

gotts81
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

SPEECHLESS!!! What a beaut!


Here comes the baby blue van, time to ride!

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#16 2014-12-10 7:15pm

vinro4416
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From: BayArea * NorCal
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Great instructional, pics and build!


K I N G   S T I N G  |  C H A M P  2 6   |  P A N D A   2 6  |  G T   2 6  |   L A G U N A   C R U I S E R  |  K O S  K R U I S E R

HUNTING FOR... (Rider survivor condition cool with me, cause parts will be used for riding)Cash and/or Trade for other 26ers or parts
> UKAI SPEEDLINE 26" RED or BLUE
> 26 SQUAREBACK CHAMP og finish preferred
> DX PEDAL single, spindles, dust caps, parts
> FINISH LINE GRIPS gd cond blue, red, black
> SHIMANO 'SAFETY' PADS frame/bar/stem pad

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#17 2014-12-16 6:05pm

cobra_standard
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

I just started this dedicated KOS thread if you'd like to throw some pics up!  cool

http://bmxmuseum.com/forums/viewtopic.php?id=622344

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#18 2014-12-19 6:04pm

cervelos
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Awesome thread Chuckster!   I love the Kos build , and watching ones vision come to life.  Very well documented too.

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#19 2014-12-20 5:18am

todd68
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Nice goose! Thanks for posting the guide to wheel building clip. I'm going to look that up. I'm lacing my first set of wheels soon.


I had kids because all my friends grew up and I had no one to play with anymore.

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#20 2015-08-12 1:52pm

CHABY
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

cool


CHABY`S COATINGS: CHROME PLATING-POLISHING-GOLD PLATING-POWDER COATING-BMX restorations -Motomag restoration and webbing repair. We glass bead Z-rims and Skyway Tuff wheels-Stainless steel spoke polishing-Antique restorations-Cars-Motorcycles-Boats Etc.  CHABYS.COM  Find us on Facebook or call us @ 508-728-4590
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#21 2018-06-19 2:40am

ras_droolie_star
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From: Oakland, CA
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Re: 1980 BMX Products Mongoose KOS Kruiser Project. PIC HEAVY!!!

Does look nice but ..... You gotta do yourself a favor and rock a white industry freewheel. It will make you soooooo happy . 4real

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