# 1985 BMW K100 - Naked bike / Cafe project **URL:** \ **Category:** Builds\ **Created:** [September 3, 2012, 7:28pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707 "2012-09-03T19:28:15Z")\ **Posts on this page:** 20\ **Page:** 4
**Author:** ![Gus](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gus/32/5112_2.png) [@Gus](https://forums.speedlife.net/u/Gus)\ **Post date:** [April 9, 2014, 11:26pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/61 "2014-04-09T23:26:07Z")
Are you reworking the rear loop to be not so… “bulky?” ---
**Author:** ![maxwell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maxwell/32/6524_2.png) [@maxwell](https://forums.speedlife.net/u/maxwell)\ **Post date:** [April 10, 2014, 8:39am UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/62 "2014-04-10T08:39:10Z")
> [@Gus](#): > > Are you reworking the rear loop to be not so… “bulky?” God damn I fucking hope so. ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 10, 2014, 9:19am UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/63 "2014-04-10T09:19:43Z")
Yea rear hoop is gonna die at some point. Not sure ifim loosong part or all of it yet though. ---
**Author:** ![Gus](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gus/32/5112_2.png) [@Gus](https://forums.speedlife.net/u/Gus)\ **Post date:** [April 10, 2014, 1:25pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/64 "2014-04-10T13:25:36Z")
> [@HotRodKid](#): > > Yea rear hoop is gonna die at some point. Not sure ifim loosong part or all of it yet though. Talk to @focusinprogress iirc he has a tube bender. I wouldn’t ditch it entirely, it has to function rigidity in some way. That’s what BMW would of wanted! Sent from my DROID RAZR using Tapatalk ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 10, 2014, 4:09pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/65 "2014-04-10T16:09:18Z")
Nick has a crush bender from HF, so it wont really work for this tight of a bend, but i will be tieing the frame back together after i cut off the hoop, that for sure. the monoshock mounts to the side of the frame so im sure it would cause a TON of flex if i didnt tie things together good. ---
**Author:** ![focusinprogress](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/focusinprogress/32/7227_2.png) [@focusinprogress](https://forums.speedlife.net/u/focusinprogress)\ **Post date:** [April 11, 2014, 6:06am UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/66 "2014-04-11T06:06:46Z")
yeah my bender won’t work too well…honestly for anything tighter than 60\* I’ve cut up old crashbars/highway bars or used pieces of parts-bike frames I have for their bends lol. ![https://scontent-a.xx.fbcdn.net/hphotos-prn2/t1.0-9/1510813_1443088409238622_691904172_n.jpg](https://scontent-a.xx.fbcdn.net/hphotos-prn2/t1.0-9/1510813_1443088409238622_691904172_n.jpg) ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 11, 2014, 4:10pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/67 "2014-04-11T16:10:58Z")
So today i decided to go get the new battery for the bike. I still had the bad battery from the contour laying around and figured id take it back to interstate, see what they say about it, and use what ever prorating i get towards the K’s battery. The woman seamed to be having a bad day, and since i was asking for a bit of a favor, i was trying to be extra nice and extra understanding. She explained the warranty / prorating system and asked if i needed the new battery today. “No i dont, the bike is still apart, but it would be nice because I hardly ever make it down to hamburg from Cheektowaga” She started testing the old one, found it only had 4v, went to put it on charge for a while … and i wandered off to have a smoke, figuring i would have to come back another time to get the new one Half was through my cig she walks out with this, says its an even trade, and asks if thats OK. Uh let me think, …i figured id get like $75 credit for my old one cause its 2 years old (by mfg date) and your handing me a battery thats like $126 online as an even trade… SHUT UP AND TAKE MY ZERO DOLLARS! ![https://scontent-b-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/1508021_10152419305502425_8704663772472794363_n.jpg](https://scontent-b-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/1508021_10152419305502425_8704663772472794363_n.jpg) ---
**Author:** ![maxwell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maxwell/32/6524_2.png) [@maxwell](https://forums.speedlife.net/u/maxwell)\ **Post date:** [April 11, 2014, 4:14pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/68 "2014-04-11T16:14:44Z")
Seems massive. So, who will finish first? @HotRodKid or @**[Motocrossx23](http://www.nyspeed.com/member.php?u=3256)**?? ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 11, 2014, 4:26pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/69 "2014-04-11T16:26:27Z")
its def not a small battery. Cold Cranking Amps: 180 Width: 5.125 Length: 7.4375 Height: 6.875 by comparison an 09 Yamaha R6 battery is: Width: 3.44 Length: 6.00 Height: 3.69 ---
**Author:** ![maxwell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maxwell/32/6524_2.png) [@maxwell](https://forums.speedlife.net/u/maxwell)\ **Post date:** [April 11, 2014, 4:33pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/70 "2014-04-11T16:33:31Z")
> [@HotRodKid](#): > > its def not a small battery. > > Cold Cranking Amps: 180 > Width: 5.125 > Length: 7.4375 > Height: 6.875 > > by comparison an 09 Yamaha R6 battery is: > > Width: 3.44 > Length: 6.00 > Height: 3.69 Are you ice racing this fucking thing in Alaska? I don’t get the need to have a massive battery on a cafe conversion… Any reason why? ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 11, 2014, 4:36pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/71 "2014-04-11T16:36:27Z")
stock size, and the k75 and k100 series are all electric start only. ---
**Author:** ![maxwell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maxwell/32/6524_2.png) [@maxwell](https://forums.speedlife.net/u/maxwell)\ **Post date:** [April 11, 2014, 4:38pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/72 "2014-04-11T16:38:28Z")
> [@HotRodKid](#): > > stock size, and the k75 and k100 series are all electric start only. Thats a really big battery, but hell, if it’s stock size and it tucks away somewhere nicely, then :tup: I’d like to see this done for spring man! ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 11, 2014, 4:50pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/73 "2014-04-11T16:50:03Z")
one of the few good pics i can find of the battery location. this is the same size battery as i have. it doesnt seam so big when its in the bike. The size and location of the battery is why so many naked K bikes have filler panels in he frame on either side of the battery. ![http://i40.servimg.com/u/f40/17/60/01/94/210.jpg](http://i40.servimg.com/u/f40/17/60/01/94/210.jpg) ---
**Author:** ![Motocrossx23](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/motocrossx23/32/5120_2.png) [@Motocrossx23](https://forums.speedlife.net/u/Motocrossx23)\ **Post date:** [April 11, 2014, 5:04pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/74 "2014-04-11T17:04:55Z")
> [@maxwell](#): > > Seems massive. > > So, who will finish first? @**[HotRodKid](http://www.nyspeed.com/member.php?u=79)** or @**[Motocrossx23](http://www.nyspeed.com/member.php?u=3256)**?? LOL. I’m not finishing, the bike is just a bunch of metal taking up space in my garage that I want back. I’m going to title it and get rid of it. ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 11, 2014, 5:13pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/75 "2014-04-11T17:13:56Z")
> [@maxwell](#): > > So, who will finish first? Hotrodkid or Somedude?? fixed ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 13, 2014, 10:55am UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/76 "2014-04-13T10:55:02Z")
pushed it outside so it could get some sun. ![https://scontent-a-ord.xx.fbcdn.net/hphotos-frc3/t1.0-9/10168207_10152423098782425_8603770485784547697_n.jpg](https://scontent-a-ord.xx.fbcdn.net/hphotos-frc3/t1.0-9/10168207_10152423098782425_8603770485784547697_n.jpg) ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 15, 2014, 8:13pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/77 "2014-04-15T20:13:56Z")
scuffed the spark plug cover ![https://scontent-a-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/1558427_10152428121062425_8750357675915159617_n.jpg](https://scontent-a-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/1558427_10152428121062425_8750357675915159617_n.jpg) tossed paint on it ![https://scontent-b-ord.xx.fbcdn.net/hphotos-prn1/t1.0-9/10170850_10152428421492425_2376722821708670848_n.jpg](https://scontent-b-ord.xx.fbcdn.net/hphotos-prn1/t1.0-9/10170850_10152428421492425_2376722821708670848_n.jpg) Machined raised letters in progress ![https://scontent-b-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/10154338_10152428421722425_7121113007296612404_n.jpg](https://scontent-b-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/10154338_10152428421722425_7121113007296612404_n.jpg) done ![https://scontent-b-ord.xx.fbcdn.net/hphotos-frc1/v/t1.0-9/1897704_10152428421807425_8639609563516565650_n.jpg?oh=0110007f6f06839c114c9e771627104a&oe=53C2F9A7](https://scontent-b-ord.xx.fbcdn.net/hphotos-frc1/v/t1.0-9/1897704_10152428421807425_8639609563516565650_n.jpg?oh=0110007f6f06839c114c9e771627104a&oe=53C2F9A7) also finally got a GOOD coat of paint on the intake plenum ![https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-prn2/t1.0-9/1487428_10152428301717425_6402959742050839695_n.jpg](https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-prn2/t1.0-9/1487428_10152428301717425_6402959742050839695_n.jpg) - - - Updated - - - photo hack of the tail section. this is an extra 15\* of rake, but im thinking 10\* would be more to my liking. donno yet. ![https://scontent-b-ord.xx.fbcdn.net/hphotos-frc3/t1.0-9/10151765_10152428462277425_3646748128823860467_n.jpg](https://scontent-b-ord.xx.fbcdn.net/hphotos-frc3/t1.0-9/10151765_10152428462277425_3646748128823860467_n.jpg) ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 17, 2014, 6:40pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/78 "2014-04-17T18:40:00Z")
This is what I’ve settled on for the rear frame hoop rake. This will bring the top of the frame up to the top of the rear splash guard(not shown). Prob make the required cuts this weekend. ![https://scontent-a-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/10273998_10152432814017425_22483096935665155_n.jpg](https://scontent-a-ord.xx.fbcdn.net/hphotos-prn2/t1.0-9/10273998_10152432814017425_22483096935665155_n.jpg) ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 19, 2014, 8:28pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/79 "2014-04-19T20:28:42Z")
WHACK! cut of the transverse brace, the seat lock, and both sides of the shock mount. Checked the angle of the original frame (5\* at its current spot) Reset my gauge for 13\* total cut the frame, bent them up, and threw a tack weld on. Double checked they are parrallel Cut off the rear section of the hoop Started plotting how i want to trim the wheel well ![http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19223051_zpsd4a5be9a.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19223051_zpsd4a5be9a.jpg) ![http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19224811_zps02e0e998.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19224811_zps02e0e998.jpg) ![http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19224821_zpsa8b33145.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19224821_zpsa8b33145.jpg) ![http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19224913_zpscef9ff45.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19224913_zpscef9ff45.jpg) ![http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19232648_zps869f83f5.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/2014-04-19232648_zps869f83f5.jpg) ---
**Author:** ![HotRodKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hotrodkid/32/7609_2.png) [@HotRodKid](https://forums.speedlife.net/u/HotRodKid)\ **Post date:** [April 21, 2014, 8:06pm UTC](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707/80 "2014-04-21T20:06:07Z")
Pushed it to the open space in the shop and played with putting it on the center stand w/o using the handle on the frame. Yea that can be cut off too. If i muck the paint on the frame after multiple times of using it as the handle fuck it, its a $7 paint job ![http://img.photobucket.com/albums/v473/hotrodkid/k100/IMAG0590_zpsyhb68eow.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/IMAG0590_zpsyhb68eow.jpg) started welding up the frame. Reshaped the old shock mount to fit again but theres not enough clearance between the shock end and the frame, so ill be making new mount plates to get a proper gap again. thats the inner plate shown, but i put it on the outside because its not nearly as ugly. ![http://img.photobucket.com/albums/v473/hotrodkid/k100/IMAG0592_zpsjt79wsnq.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/IMAG0592_zpsjt79wsnq.jpg) this is the original outer. its extended to pick up one of the mount points for the city bag brackets, and has a grommet hole for the stock side panel. ![http://img.photobucket.com/albums/v473/hotrodkid/k100/IMAG0593_zps6wqlexdp.jpg](http://img.photobucket.com/albums/v473/hotrodkid/k100/IMAG0593_zps6wqlexdp.jpg) [Previous page](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707.md?page=3) [Next page](https://forums.speedlife.net/t/1985-bmw-k100-naked-bike-cafe-project/225707.md?page=5)