bump start


Information and questions on GL1200 Goldwings (1984-1987)
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crispy1
Posts: 7
Joined: Fri Aug 19, 2016 5:57 pm
Location: Edmonton,AB, Canada
Motorcycle: 1985 GL1200 LTD

bump start

Postby crispy1 » Tue Aug 23, 2016 9:14 pm



I am new to Gold Wing driving. Have been given an 85 LTD and need to bump start. Was told to bump from 2nd. How fast do you need to get to Vs bumping from 1stÉ



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themainviking
Posts: 2579
Joined: Wed Sep 29, 2010 6:59 pm
Location: North Bay, Ontario, Canada
Motorcycle: 2009 GL1800 AD

Re: bump start

Postby themainviking » Wed Aug 24, 2016 8:47 am

It has nothing to do with speed. In first gear, you will come to a stop before the engine turns over enough to start. That is the reason for push starting in a weaker gear. I have even heard of push starting in third or fourth. Personally, I have never push started a motorcycle, although I have done it with cages. Higher gear, but still need the same speed. A nice hill is the best tool for this.
It ain't about the destination - it's all about the journey

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aj1500
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Re: bump start

Postby aj1500 » Wed Aug 24, 2016 9:41 am

I have had to push start both my 1200 and the 1500 in the past, I found 3rd is the best gear to use but 2nd will work, just takes a little more speed to account for the torque of 2nd

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brettchallenger
Posts: 462
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Location: Driffield, the East Riding of Yorkshire, England
Motorcycle: 1978 Triumph Tiger TR7 (sold)
2000 Honda GL1500 SE
1985 MZ ETZ250 (a cold war special).

Re: bump start

Postby brettchallenger » Wed Aug 24, 2016 10:13 am

why do you need to push start? Is it a dead battery or problem with starter motor?
The game's afoot;
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crispy1
Posts: 7
Joined: Fri Aug 19, 2016 5:57 pm
Location: Edmonton,AB, Canada
Motorcycle: 1985 GL1200 LTD

Re: bump start

Postby crispy1 » Wed Aug 24, 2016 10:23 am

starter not engaging as bike has been sitting for awhile. Have changed oil, added Seafoam, put in new battery, starter just spins

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brettchallenger
Posts: 462
Joined: Sat May 29, 2010 11:03 am
Location: Driffield, the East Riding of Yorkshire, England
Motorcycle: 1978 Triumph Tiger TR7 (sold)
2000 Honda GL1500 SE
1985 MZ ETZ250 (a cold war special).

Re: bump start

Postby brettchallenger » Wed Aug 24, 2016 10:41 am

Ah, in the old days you could have just hit it with a hammer.
The game's afoot;
Follow your spirit: and upon this charge,
Cry — God for Harry! England and Saint George!

crispy1
Posts: 7
Joined: Fri Aug 19, 2016 5:57 pm
Location: Edmonton,AB, Canada
Motorcycle: 1985 GL1200 LTD

Re: bump start

Postby crispy1 » Wed Aug 24, 2016 10:45 am

did have the rubber mallet ready though....LOL

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Rednaxs60
Posts: 728
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: bump start

Postby Rednaxs60 » Wed Aug 24, 2016 11:41 am

Have had starter issues as well, but the engine always turned over. I replaced my original OEM starter in December because it would run on after starting the bike. Replaced the starter with new and it worked better, but it stopped working two weeks ago. Put the original back in and all is well. There was a manufacturing defect in the new starter that has been fixed under warranty.

Had the engine out in June and did the clutch and other work including replacing the springs, rollers and pins on the starter clutch.

If the starter is spinning and the engine is not turning, there could be two possibilities. One, the starter clutch is not engaging, or the starter chain is broke. The latter is probably not the cause, but this can be determined by removing the starter and inspecting the starter gear and chain. Once the starter is out, you should also be able to turn the starter chain one way but not the other. If the starter chain turns both ways there is a problem with the starter clutch. If the starter clutch does not turn, issue as well.

Problem/issue with the starter clutch will require engine removal.

Here is a picture of the internals for the starter, starter chain and starter clutch that forms part of the alternator assembly. In this picture you can see how the starter is connected and the starter chain runs up in behind the alternator assembly (rotor portion). With the starter disconnected from the sprocket you should be able to turn the chain one way but not the other (forget which it is).


Here is a picture of the internals with some comments.


Hope this helps.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

crispy1
Posts: 7
Joined: Fri Aug 19, 2016 5:57 pm
Location: Edmonton,AB, Canada
Motorcycle: 1985 GL1200 LTD

Re: bump start

Postby crispy1 » Wed Aug 24, 2016 11:48 am

will look into it, thanks. Great to hear from my hometown

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roadwanderer2
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Re: bump start

Postby roadwanderer2 » Wed Aug 24, 2016 3:20 pm

Rednaxs is correct. unfortunately to get to the starter clutch the engine has to be removed from the bike and the rear engine cover has to be taken off the motor. i have the same problem with my 86 SEi and in about a week or so im starting the process of removing the engine from the frame. found all of the parts on eBay, and while i have the motor off, im replacing the timing belts, clutch friction plates, stator and rebuilding the clutch slave cylinder. no sense in removing the motor and exposing these other parts and not changing them out while i have the motor on a bench. this should insure at least another 60-80,000 trouble free miles...hopefully.

stuart.

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Rednaxs60
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Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: bump start

Postby Rednaxs60 » Wed Aug 24, 2016 6:20 pm

An exploratory to see if there is an internal issue by removing the starter will require you to remove the lower fairings, drop the exhaust, loosen off the engine guards to get enough clearance to drop the exhaust far enough and removing the rear right exhaust manifold bolt (the one right beside the starter). Takes about an hour (I have renewed all the studs and nuts - new is always nice) to take the starter out.

Good luck. PM sent as well.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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HALBUDD
Posts: 846
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Location: New Albany In
Motorcycle: 1984 gl1200a&1985GL1200A & 1996 gl 1500 aspy. us army 74-77

Re: bump start

Postby HALBUDD » Wed Aug 24, 2016 7:39 pm

I have read other posts of riders having the same problem, the sprog gets all gummed up as it does not get a good oil flow. I would try putting seafoam in your oil and running the bike for about 100 miles just dont run it hard. This will get the gum out of the starter sprog. Change your oil after you run it you will see a lot of gunk coming out with your old oil. As you said it was setting for awhile. just something I read somewhere.---------------------------------Hal
A woman that can use tools is worth her weight in gold !!

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Rednaxs60
Posts: 728
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: bump start

Postby Rednaxs60 » Thu Aug 25, 2016 12:20 am

Tried the sea foam in the oil before I removed the engine. I did not notice a difference. When I removed the engine and the starter clutch, I found it was very clean. I have since replaced the springs, rollers and pins in the starter clutch, and with the original starter in place, no more carry on by the starter clutch and it engages first time, every time so far. The small springs, much like a ball point pen spring (one fellow here in Victoria used ball point pen springs in place of the OEM springs and it worked well apparently) have to adjust to the heavy roller and can wear over time. If you do remove the engine, I'd replace these three items in the starter clutch.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
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Re: bump start

Postby dingdong » Thu Aug 25, 2016 7:07 am

You do need to get the engine running in order for the Seafoam to do it's work. More than likely the sprag clutch is gooped up from sitting.


Tom

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