Fuel pump upgrade ( electric ) on 1975 K1

A forum for stories, pics and updates of your resto's. Be it a barn find, Grampas hand me down or a bike being brought back to it's former glory.If you are restoring it, show us your stuff!

Moderators: Brant, Sagebrush, Forum Moderators

Post Reply
snuskebasse
Tin Member
Tin Member
Posts: 10
Joined: Thu May 06, 2010 4:31 am
Location: broager denmark
Contact:

Fuel pump upgrade ( electric ) on 1975 K1

#1

Post by snuskebasse »

Hi all,

I did the needed jobs on my GL1000 K1 like rebuilding carbs, renewing timing belts, Dyna S installation, replacing one ignition coil, rebuilding the 30 A main switch, checking ground and supply resistance all around, BUT the idle was terrible: back firing now and then, rev. changing between 0 and 3000 rpm. :-?

I moved the fuel pump tubes to an electric pump from an Yamaha R1 ( Carb. version !! ), and amasingly the old bike started like a charm and has super cold control with the choke. :crosso

I attach some few pictures of the set-up and later the optional electronics to control the pump,

rdgs, Erik
You do not have the required permissions to view the files attached to this post.
GL 1000 K1 aug. 1975

Homepage: http://larsenhenneberg.dk/kardanbase
heraldhamster
Honored Life Member
Honored Life Member
Posts: 4549
Joined: Wed Jun 28, 2006 2:52 pm
Location: up by the Canadian border in WA state

Re: Fuel pump upgrade ( electric ) on 1975 K1

#2

Post by heraldhamster »

nice job. I like the way you think Erik. outside the box, as they say.
sorta bulldogged custom 1978 GL1000 - "geekster"
full Vetter dress 1979 GL1000 - "Barge" (currently down)
1986 1200 Aspencade - "Heart of Gold" - daily rider
1990 1500 Aspencade - It's ALIVE! but very, very naked. not in a good way.
1978 for $100 - project in worx
1978 from a previous member here - taking up space
my original '79 bought in '91 - replacing engine (eventually, maybe someday)

H2G2=42

A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity. ~ Robert A. Heinlein

The good thing about science is that it's true whether or not you believe in it. ~ Neil deGrasse Tyson
bum
Gold Member
Gold Member
Posts: 1067
Joined: Thu Jan 08, 2009 3:13 pm
Location: Merced California

Re: Fuel pump upgrade ( electric ) on 1975 K1

#3

Post by bum »

It is my opinion that most of the members of this site think outside the box , the ingenuity shown on this site is outstanding...this is just another example..
Welcome to the site Erik...what is "RDGS" ? :8)
bum
8 wings + 1 Triumph +2 Musclecars = 1 pissed off wife !!!
snuskebasse
Tin Member
Tin Member
Posts: 10
Joined: Thu May 06, 2010 4:31 am
Location: broager denmark
Contact:

Re: Fuel pump upgrade ( electric ) on 1975 K1

#4

Post by snuskebasse »

Hi,

Thanx for your compliments, they are always nice to have and to recall later on ;)

I will test the electronic fuel pump control circuit in the near future and upload info here crossy.gif

BTW, rdgs is used in England and is an abbreviation of regards,

Best regards, Erik
GL 1000 K1 aug. 1975

Homepage: http://larsenhenneberg.dk/kardanbase
User avatar
Cookie
Honored Life Member
Honored Life Member
Posts: 15821
Joined: Thu Oct 25, 2007 11:37 pm
RIP: 1950-2011
Location: San Mateo, CA

Re: Fuel pump upgrade ( electric ) on 1975 K1

#5

Post by Cookie »

Looks like a nice compact pump.
Enjoy life,
Cookie


A guy with two sidecars can't be all bad.
Owner of 4.4 76s and one lone 75 Wings (does a spare engine make .2?)
snuskebasse
Tin Member
Tin Member
Posts: 10
Joined: Thu May 06, 2010 4:31 am
Location: broager denmark
Contact:

Re: Fuel pump upgrade ( electric ) on 1975 K1

#6

Post by snuskebasse »

Electric fuel pump now in place action1 ..
You do not have the required permissions to view the files attached to this post.
GL 1000 K1 aug. 1975

Homepage: http://larsenhenneberg.dk/kardanbase
snuskebasse
Tin Member
Tin Member
Posts: 10
Joined: Thu May 06, 2010 4:31 am
Location: broager denmark
Contact:

Re: Fuel pump upgrade ( electric ) on 1975 K1

#7

Post by snuskebasse »

I have now tested the electronic fuel pump control "on bike", and it works as intended crossy.gif

In case someone would like to make it, I have added the schematics. It is made with Eagle schematics and PCB design program, just post a message, then I will provide all the files needed to "repeat the success", :crosso
You do not have the required permissions to view the files attached to this post.
GL 1000 K1 aug. 1975

Homepage: http://larsenhenneberg.dk/kardanbase
heraldhamster
Honored Life Member
Honored Life Member
Posts: 4549
Joined: Wed Jun 28, 2006 2:52 pm
Location: up by the Canadian border in WA state

Re: Fuel pump upgrade ( electric ) on 1975 K1

#8

Post by heraldhamster »

interesting...
sorta bulldogged custom 1978 GL1000 - "geekster"
full Vetter dress 1979 GL1000 - "Barge" (currently down)
1986 1200 Aspencade - "Heart of Gold" - daily rider
1990 1500 Aspencade - It's ALIVE! but very, very naked. not in a good way.
1978 for $100 - project in worx
1978 from a previous member here - taking up space
my original '79 bought in '91 - replacing engine (eventually, maybe someday)

H2G2=42

A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity. ~ Robert A. Heinlein

The good thing about science is that it's true whether or not you believe in it. ~ Neil deGrasse Tyson
User avatar
BlueThunder
Platinum Member
Platinum Member
Posts: 1535
Joined: Fri Nov 07, 2008 4:39 pm
Location: Long Island, NY

Re: Fuel pump upgrade ( electric ) on 1975 K1

#9

Post by BlueThunder »

Why is an electronic control necessary to control the fuel pump? Is this for an EFI setup?
...Brian
2014 CTX1300 Deluxe - BlackThunder aka Predator
1977 GL1000 - Ox
snuskebasse
Tin Member
Tin Member
Posts: 10
Joined: Thu May 06, 2010 4:31 am
Location: broager denmark
Contact:

Re: Fuel pump upgrade ( electric ) on 1975 K1

#10

Post by snuskebasse »

It is mostly for safety reasons. The pump is only getting battery supply in 3 sec. after ignition is turned on, and when signals are received from one of coils primary circuit,
GL 1000 K1 aug. 1975

Homepage: http://larsenhenneberg.dk/kardanbase
User avatar
Toehead
True Blue Steel Biker
True Blue Steel Biker
Posts: 2135
Joined: Fri Jul 15, 2011 3:10 pm
Location: Mendon, MA

Re: Fuel pump upgrade ( electric ) on 1975 K1

#11

Post by Toehead »

Very nice setup you have. Can you share some photos from far away to let us see how it looks overall?


I like your idea of the control circuit. I may build something similar, if I don't decide to do an analog version (Pump runs in neutral and when the clutch lever is pulled, and when the engine has oil pressure , relay controlled)
2012 Golf TDI, fast and frugal oil burner
1980 CX500C, All around road warrior (Sold)
1975 TS125 (Sold), old smoker
1977 naked GL1000, Highway cruiser
'81 GL1100 14,000 (reconditioned and sold)
'81 GL1100 50,000 miles (under construction)
2X 1981 CM400 beginner bike (sold)
1980 CB750C (sold)
1994 Virago 750 (Wifey's bike)
'76 GL1000 Sulphur Yellow (Megasquirted efi build) http://www.ngwclub.com/forum/viewtopic.php?f=47&t=59774
LikeMike64
Gold Member
Gold Member
Posts: 1167
Joined: Wed Oct 22, 2008 3:59 pm
Location: Greenville, SC, USA

Re: Fuel pump upgrade ( electric ) on 1975 K1

#12

Post by LikeMike64 »

I like this idea of the control circuit. I was able to order all of the required parts (except the relay, which I have on hand) from http://www.mouser.com for less than $20, including the enclosure.
If this is used on a bike with a Dyna electronic ignition, a .01uf cap is needed in series with R4, or the engine will not run.
Mike
So many interests, so little time...



'76 GL1000: "The Super Bee" - finished.
'75 GL1000: Basket Case, Next project in queue
Post Reply

Return to “Members Restorations and Projects”