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Author Topic: 1985 K75 Cafe custom  (Read 39808 times)

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #25 on: October 31, 2014, 06:41:25 PM »
Oh, here is a pic of where the battery will live, and what you also see there is my new exhaust. Some assembly required
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #26 on: November 01, 2014, 04:39:25 AM »
Also, on the exhaust, I have a baffle, some packing and a basic SS end tip. The baffle needs to reduce the noise, obviously, and give some back pressure. Anyone got any experience of regulating back pressure on an otherwise free flow exhaust!
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #27 on: November 02, 2014, 05:35:51 PM »
Right, ignore some of my previous posts, I have resolved the "where to hide" my ignition issue. And I must say although it seems pretty obvious, I think it is perfect. So far I can't get rid of that writing, so I may end up spraying this and the alternator cover.
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #28 on: November 02, 2014, 05:44:31 PM »
this was just supposed to be a quick, get ready for winter riding, build but I couldn't resist cleaning up the mid section so in addition to making the seat supports, I made a battery box and some supports for the ECU to put it under the hump at the back.

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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #29 on: December 01, 2014, 06:26:33 PM »
Starting to take shape now.
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline beachcomber

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Re: 1985 K75 Cafe custom
« Reply #30 on: December 02, 2014, 04:25:25 AM »
That seat combo looks spot on now - good work. :clap:
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Offline cjdickie

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Re: 1985 K75 Cafe custom
« Reply #31 on: December 04, 2014, 01:56:50 PM »
Looking good.
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Offline billday

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Re: 1985 K75 Cafe custom
« Reply #32 on: December 06, 2014, 02:39:02 PM »
This may be a little late, but I did a thread on moving the ignition to the airbox:

http://www.motobrick.com/index.php?topic=3605.msg21610#msg21610

Your project looks great, keep us posted!
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  • New York State, USA 10977
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Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #33 on: December 07, 2014, 05:48:37 AM »
Thanks. I'll check it out. I'm not sure I actually want to put the coil cover back any more.

I did some painting yesterday.  BMW  Montreal blue. The viper stripes are 1 electrical tape width apart ☺.
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline beachcomber

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Re: 1985 K75 Cafe custom
« Reply #34 on: December 07, 2014, 06:18:12 AM »
Good to see you have your priorities right  :2thumbup:.... the lounge is the obvious place to display them ! Understanding Wife / partner no doubt.

Like your colour ways - I'm playing with something similar [ different colours ] to break up the main colour on my Fighter.

However, I STILL can't decide on the final colour ! :dunno2:
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Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #35 on: December 07, 2014, 07:15:33 AM »
I got into trouble for having them in the dining room, but I think they needed a warm spot for the night, so the lounge it is :).

Colour choice for me was easy I have a bit of a thing for dark blue and then it was just a case of choosing a BMW shade.  However, I have literally no idea what to do on the wheels. Blue and polished ally, silver, black? I simply can't decide. But I am not doing them for a while so I have a bit of time yet.
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline beachcomber

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Re: 1985 K75 Cafe custom
« Reply #36 on: December 08, 2014, 04:28:00 AM »
Quote from: Doc_69 on December 07, 2014, 07:15:33 AM
I got into trouble for having them in the dining room, but I think they needed a warm spot for the night, so the lounge it is :).

Colour choice for me was easy I have a bit of a thing for dark blue and then it was just a case of choosing a BMW shade.  However, I have literally no idea what to do on the wheels. Blue and polished ally, silver, black? I simply can't decide. But I am not doing them for a while so I have a bit of time yet.

Blue to match the tins would look classy IMO - contrast stripe around the rim ?
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Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #37 on: December 08, 2014, 06:14:59 PM »
Quote from: rbm on October 22, 2014, 08:55:13 AM
Just throwing out an idea.  For the tailpiece, you may want to neglect to replace the grab handles, fill in the voids with fibreglass and do some body filling to smooth over the tail.  It changes the character of the backend.



Like the final product RBM? The paint is a bit dark to pick up the detail but basically I filled in the handle mounts and smoothed off the recesses for the black hand cups
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #38 on: December 08, 2014, 06:18:48 PM »
Beachcomber, I think you're right, but I have a Christmas deadline in this so in reality it is going to have to wait until summer I think. I know it is going to play on my mind though. Let's see if I can hold or til then
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline Grim

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Re: 1985 K75 Cafe custom
« Reply #39 on: December 11, 2014, 09:43:35 PM »
That by far income of the best conversions I have seen. The planes that th tank and tail are on do not match without the side panels. Most cafe builds it just never looks right.  Yours looks right.

Can't wait to see the final assembly.
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1995 Morea Green K1100LT

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #40 on: December 12, 2014, 06:48:43 AM »
Thanks Grim, that's very kind of you
I completely agree about the lines and that was the entire motivation for doing it this way. It is a lot of extra work, but I really want it to look like it could just have been another factory option in 1985, or a pre-production concept bike.

My self imposed deadline on getting this thing reassembled and running is Christmas which in weekend terms is only 4 days, but I still have a ton of work to do, including wiring up the digital dash and reinstating the front brakes.
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #41 on: December 14, 2014, 12:58:06 PM »
Loads more to do, but I'm holding off til after Christmas, I have a feeling that there will be an air compressor and a blasting pot under the tree this year which will make the upcoming jobs of replacing the inlet stubs and cleaning the engine a whole lot easier. So until then I might just fit the heated grips an get back to painting the house before the holiday madness decends.

The bike is far from ready to wear its clothes but I couldn't resist a little photo shoot.

Merry Christmas Y'all.
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline johnny

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Re: 1985 K75 Cafe custom
« Reply #42 on: December 14, 2014, 01:09:43 PM »
greetings doc_69...

this motobricker approves of your bastardization of your motobrick... its already looking yeeeeehaaaaaa...

j o
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  • :johnny i parks my 96 eleven hundert rs motobrick in dodge county cheezconsin  :johnny

Offline beachcomber

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Re: 1985 K75 Cafe custom
« Reply #43 on: December 15, 2014, 05:57:28 AM »
Looking good.

let us know how you get on with your comp / blast pot.

I bought a blast pot a few months ago, but haven't had an opportunity to try it out yet - everyone keeps telling me the compressor won't be man enough.

Happy Christmas to you and yours - hope Santa doesn't get stuck halfway down the chimney with that compressor !
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"If at first you don't succeed - youve already been a failure once"

Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #44 on: December 28, 2014, 03:17:59 PM »
Blast pot + soda = fail. The compressor really wasn't up to the task. When I got good air flow it actually worked pretty well but it seemed to clog quite often. I might try glass beads or other, more aggressive media. Since the compressor isn't belting out huge pressure I think I can get away with it.

Since I have the pot now I don't see any harm in giving it a go. Next job though is to replace the inlet stubs and try to get the thing running again. I can clean bits later. I also just realised that my cooling fan is completely seized.

That's another thing on the to-buy list
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline beachcomber

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Re: 1985 K75 Cafe custom
« Reply #45 on: December 31, 2014, 05:39:13 AM »
Quote from: Doc_69 on December 28, 2014, 03:17:59 PM
Blast pot + soda = fail. The compressor really wasn't up to the task. When I got good air flow it actually worked pretty well but it seemed to clog quite often. I might try glass beads or other, more aggressive media. Since the compressor isn't belting out huge pressure I think I can get away with it.

Since I have the pot now I don't see any harm in giving it a go. Next job though is to replace the inlet stubs and try to get the thing running again. I can clean bits later. I also just realised that my cooling fan is completely seized.

That's another thing on the to-buy list

yes, this is what I've heard from other peeps who have theat set up - seems you need a really powerful compressor to do the job. The Halfords / Clarks £300 jobbies aren't up to it.

A pal of mine has used Silver Sand [ ? ] and some other stuff [ sand of some sort ] he got from a builder friend. That worked with his DIY compressor - so when the weather brightens up, I might give that a try
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Offline Doc_69

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Re: 1985 K75 Cafe custom
« Reply #46 on: December 31, 2014, 06:09:18 AM »
I just spoke to a guy that sells all sorts of blasting media and he recommended glass bead, he seemed pretty confident so I'm going to give that a go. I'll let you know.
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In my garage:
2013 Harley Fat-Bob, the daily rider
1982 suzuki GS550e, commuter scooter turned cafe racer!
198x Suzuki GS550l, nasty cruiser being morphed into a dirt bike
1985 K75c - the current object of my obsession

Offline pdg

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Re: 1985 K75 Cafe custom
« Reply #47 on: January 05, 2015, 11:03:41 AM »
Quote from: beachcomber on December 31, 2014, 05:39:13 AM
A pal of mine has used Silver Sand [ ? ] and some other stuff [ sand of some sort ] he got from a builder friend. That worked with his DIY compressor - so when the weather brightens up, I might give that a try

Silver sand (aka silica sand) and/or "building" sand as a blasting media?

Enjoy your silicosis............ And the fine if you do it on a business premises.
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1988 K75S

Offline maxt

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Re: 1985 K75 Cafe custom
« Reply #48 on: January 05, 2015, 03:57:05 PM »
Hi I have used as media glass beads 100/200 mikrons, you have to use at least 6bar I recommend 8-10 bar  I am going to blast complete engine with covers....so no paint on it
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Offline beachcomber

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Re: 1985 K75 Cafe custom
« Reply #49 on: January 05, 2015, 04:56:26 PM »
Quote from: pdg on January 05, 2015, 11:03:41 AM
Quote from: beachcomber on December 31, 2014, 05:39:13 AM
A pal of mine has used Silver Sand [ ? ] and some other stuff [ sand of some sort ] he got from a builder friend. That worked with his DIY compressor - so when the weather brightens up, I might give that a try

Silver sand (aka silica sand) and/or "building" sand as a blasting media?

Enjoy your silicosis............ And the fine if you do it on a business premises.

Thanx for the tip :clap: ...... I'll wear a big mask and do it in the garden.
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"If at first you don't succeed - youve already been a failure once"
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