BMW R1200RT/R1250RT forum

BMW R 1200RT => BMW R 1200RT General Discussions => Topic started by: heathy65 on 2019-11-25 17:35:27

Title: starting problem
Post by: heathy65 on 2019-11-25 17:35:27
for as long as I can remember my 2005 has been sluggish starting, as if the battery is on its way out. New battery fitted last year made no difference. Recently it got so bad I considered changing the starter motor. Then yesterday it cranked freely and has been ok today. So the question is why? could it be a poor earth, gunked up starter motor,  bikes trickle charged when not being used and battery id fully charged.
So anyone got any suggestions as to whats wrong?
Title: Re: starting problem
Post by: milleplod on 2019-11-25 18:17:32
I'd say the starter motor will be caked in crap inside - my '06 bike had the same symptoms....OK once in a while....till I took the plunge as per my PM. Of course, it could be a bad earth - you can have a good look around if you take the starter off - although the 1200s don't seem to suffer with that like the earlier bikes did.
Pete
Title: Re: starting problem
Post by: ds99 on 2019-11-27 14:21:36
my 2007 model is a bit like that
Title: Re: starting problem
Post by: julianq on 2019-11-28 11:52:41
MY 2005 was similar, a few of earthing problems, ending up running separate earth wire from battery to engine by alternator bolt and starter motor bolt, seemed to solve the problem.
Title: Re: starting problem
Post by: David. on 2019-11-28 12:33:27
Is this Motolectric upgrade of any help or interest, https://www.youtube.com/watch?v=bSVS_HMxR6Y

BMW Hexhead, https://motolectric.com/makes/bmw.html
Title: Re: starting problem
Post by: heathy65 on 2019-11-29 10:58:01
Cheers David. this is not the problem. The engine fires up very easily, it's the starter motor struggling to turn the engine over in the first place (as if the battery is discharged),but not all the time. some days it struggles other days it spins the engine without any problem.  Hence my wondeing if its a poor earth to the starter.
Title: Re: starting problem
Post by: David. on 2019-11-29 12:14:41
Hence my wondeing if its a poor earth to the starter.

The video & Motolectric website basically show that they are just doubling up on the +ve & -ve leads from the battery to the starter solenoid (+ve) & engine (earth).

(https://motolectric.com/install_guides/hicap/bmw/oil.hexheads/source/image/dscn7885.jpg)

(https://motolectric.com/install_guides/hicap/bmw/oil.hexheads/source/image/dscn7882.jpg)

The likes of Halfords do a range of battery leads for a fraction of the cost which are available in the UK, https://www.halfords.com/webapp/wcs/stores/servlet/SearchRouter?langId=-1&storeId=10001&catalogId=10151&action=search&srch=battery+leads

An additional earth lead won't do any harm & may indeed improve the situation.
Title: Re: starting problem
Post by: milleplod on 2019-11-29 15:24:08
The video & Motolectric website basically show that they are just doubling up on the +ve & -ve leads from the battery to the starter solenoid (+ve) & engine (earth).

(https://motolectric.com/install_guides/hicap/bmw/oil.hexheads/source/image/dscn7885.jpg)

(https://motolectric.com/install_guides/hicap/bmw/oil.hexheads/source/image/dscn7882.jpg)

The likes of Halfords do a range of battery leads for a fraction of the cost which are available in the UK, https://www.halfords.com/webapp/wcs/stores/servlet/SearchRouter?langId=-1&storeId=10001&catalogId=10151&action=search&srch=battery+leads (https://www.halfords.com/webapp/wcs/stores/servlet/SearchRouter?langId=-1&storeId=10001&catalogId=10151&action=search&srch=battery+leads)

An additional earth lead won't do any harm & may indeed improve the situation.
A visit to Halfords has got to be worth it looking at those prices on Motoelectric's website! 
Title: Re: starting problem
Post by: David. on 2019-11-29 16:15:08
A visit to Halfords has got to be worth it looking at those prices on Motoelectric's website!

Motolectric claim their technology is different, https://motolectric.com/motolectric_technology.html
Title: Re: starting problem
Post by: milleplod on 2019-11-29 16:35:52
Motolectric claim their technology is different, https://motolectric.com/motolectric_technology.html (https://motolectric.com/motolectric_technology.html)

I bet they do - their $75 kit for the hexheads is just replacement cables matched with some very nice marketing hot air! They might be decent-spec cables, as opposed to cheap stuff.....but 60 quid's worth...plus postage?! "No hocus-pocus, no magic, no secret sauces." Indeed not, they're just cables!
Pete
Title: Re: starting problem
Post by: David. on 2019-11-30 10:29:40
MY 2005 was similar, a few of earthing problems, ending up running separate earth wire from battery to engine by alternator bolt and starter motor bolt, seemed to solve the problem.

An additional earth lead won't do any harm & may indeed improve the situation.