Post by: Moorey on November 30, 2022, 07:32:36 PM
Can anyone tell me how many ohms the primaries are on just the coil for a 1977 GL 1000k2 are. The coil is a tec FL101 part# 30502371003
I seem to be getting a lot of conflicting info.
Post by: Bryanj on November 30, 2022, 10:45:54 PM
Post by: Moorey on December 01, 2022, 09:33:31 AM
Cheers Bryan.
Post by: AshimotoK0 on December 01, 2022, 12:02:38 PM
Post by: Moorey on December 01, 2022, 01:57:11 PM
Assuming it's not a CDi ignition I think GL1000 Goldwings had a coil combined with a ballast resistor. So expect a much lower primary resistance than the standard 'Honda-4" coils. From memory it should be around 2.7 Ohms and the ballast resistor about the same. But Bryan's manual will hopefully confirm this. All I am really saying is that if you encounter a low resistance reading (around half of the 4-5 Ohms for a Honda 4 coil) then don't worry, chances are it's OK.
All I seem to be able to find in the manual is test it in the coil tester. Ballast resistor 3ohms. I just seem to be finding lots of contradicting info and coils listed from 2 t0 5 0hms listed for the GL1000.
I am trying to find out for someone else. Thanks for your input Ash.
Post by: Bryanj on December 01, 2022, 08:22:22 PM
Post by: Laverdaroo on December 01, 2022, 08:37:58 PM
Bryan, did you get a chance to measure up that suzuki mudguard mate? I'm not pestering as I guess you're dead buy leading up to Crimbo etc? More of a reminder if you get a sec. Thanks again mate, you're a good un.
Sorry, carry on,................Coil info coming on saturday etc..... ;) :)
Post by: Bryanj on December 03, 2022, 01:38:25 PM
The only book i have access to at moment is GL 1200 which is electronic and that says 2.3 to 3.0 ohms, i will continue looking for the 1000 book
Post by: K2-K6 on December 03, 2022, 02:59:51 PM
Points based systems have dwell in angles of crank but with it changing/shortening as revs rise on time basis. Too low ohm rating leaves the coils on too long during low rpm if they are paired.
Low ohms rating on points may overheat coils in drawing too much from supply at low rpm. High ohms on electronic may give high rpm compromise as it remains not fully saturated when supply is terminated to fire plugs.
Post by: Bryanj on December 03, 2022, 05:22:18 PM
Post by: Moorey on December 05, 2022, 03:56:15 PM
If it helps the overview for OP, electronic equipped makes use of low ohm rating because they can control the switched on time, dwell, on a fixed time basis and irrespective of engine rpm.
Points based systems have dwell in angles of crank but with it changing/shortening as revs rise on time basis. Too low ohm rating leaves the coils on too long during low rpm if they are paired.
Low ohms rating on points may overheat coils in drawing too much from supply at low rpm. High ohms on electronic may give high rpm compromise as it remains not fully saturated when supply is terminated to fire plugs.
The bike is still on the points system.
Post by: Moorey on December 05, 2022, 04:03:09 PM
Big problem with the 1000 was they had 9v ballasted coils to get better spark for starting, like 70' fords and vauxhalls
The ballast resistor is within spec Bryan. I have asked the same question on a couple of Wing forums and a Wing FB page but no responses on the
actual coil readings
Post by: Bryanj on December 05, 2022, 05:03:03 PM
Post by: K2-K6 on December 05, 2022, 06:02:55 PM
Then that would produce 12v (over capacity) 2ohm "hot" coil via supply route when starting as it's usual to temporarily eliminate the ballast resistor through start switching to enhance immediate firing.
Post by: heli_madken on December 05, 2022, 06:34:22 PM
It is so rare for coils to fail electrcaly that i cant remember a set! the wires do get old but Ash'fix cures that.
I was really unlucky my original K2 was just over a year old back in 1979 when both coils suddenly failed leaving me stranded, so it can happen.
On my current K2 I went to a Dyna electronic system with Dyna 3 ohm coils and bypassed the ballast resistor. Been in place for 4 years and never missed a beat.
Post by: Oddjob on December 05, 2022, 07:39:07 PM
Post by: heli_madken on December 05, 2022, 11:19:41 PM
Just very unlucky I think. Worst part was getting a tow from my Dad in his MK2 escort home. Scariest thing I have ever done on a bike, going round corners the car was pulling me over. Madness of youth, but at the time getting someone to transport the bike home was very difficult and the garage I had bought it from (Rogersons of Orell) were not interested at all as the bike was out of warranty.
Post by: McCabe-Thiele (Ted) on December 06, 2022, 12:30:43 AM
Only had a bike tow once for about 3 miles when my Triumph 21 refused to start - that was 3 miles to many.🫣🫣🫣
Tow vehicle was an Aerial Leader,
Post by: Oddjob on December 06, 2022, 02:56:15 AM
Post by: heli_madken on December 06, 2022, 10:00:10 AM
With a new set of coils the bike fired right up.
Post by: Oddjob on December 06, 2022, 11:20:23 AM
Post by: Bristolbadger on February 04, 2023, 06:41:17 PM
https://www.ebay.co.uk/itm/391648128024?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=jB7g0RZOSta&sssrc=2349624&ssuid=SvEr97QAR_K&var=&widget_ver=artemis&media=COPY
They sell the same generic one (reads 4ohms) for multiple listings.
Have just asked for a refund.. you never know
Post by: Oddjob on February 04, 2023, 06:45:15 PM