Possible fix for slow starter motor speed with hot engine

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banner001
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Possible fix for slow starter motor speed with hot engine

Post by banner001 » Fri Jul 18, 2014 11:08 pm

I've bought an 8-tonne hydraulic crimper so I've made myself some new cables from the battery to the starter relay and from the relay to the starter motor...now the starter motor spins as fast when the bike is warm as it did when it's cold.

The wire im using should be a lot better than standard, the original wire is 50-strand 0.45mm diameter copper, im using 126-strand 0.4mm diameter copper, so thats an increase in cross-sectional area (used to measure the resistivity of the wire) from 7.95mm2 to 15.83mm2...should reduce the wire resistance by half, also my cables are a few cm shorter than standard so thats another gain as the voltage loss across the length of wire should be less. All this means that the wire should be able to deliver a stronger current, with a greater amount of voltage actually going to the starter motor, and should stand up to repeated starting and engine heating cycles.

If you are suffering from the same problem I'm offering the two +ve cables at a cost price of £8 +p&p. If you want the negative return only it will cost you £5 +p&p. And the full set of 3 cables is £13 +p&p. Postage rates are currently £3.50 for first class postage.

The two +ve leads from cradleys will cost you £51 and the negative return would be £13...I can't find anywhere else to buy them?

All the wires will be fitted with 6mm eleyets, except for the connection to the starter motor which is 5mm, and all the +ve cables will come with water/dirt covers.


Here are the ones im doing for Leey - now all complete, this is what you would get:
Image
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Re: Fixed my hot starting issue.

Post by Leey » Sat Jul 19, 2014 10:24 am

Ace sounds good may I have a set please? :smt002

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Re: Fixed my hot starting issue.

Post by banner001 » Sat Jul 19, 2014 2:16 pm

Sure thing, the 2x positive leads, the negative lead, or both sets?
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Re: Fixed my hot starting issue.

Post by Leey » Sun Jul 20, 2014 2:23 pm

Both sets please :smt003

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Re: Fixed my hot starting issue.

Post by banner001 » Sun Jul 20, 2014 3:24 pm

No problems, I'll buy some more wire and cut a few sets. I'll PM you when they are done and take a few pics.
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Re: Fixed my hot starting issue.

Post by Leey » Sun Jul 20, 2014 4:55 pm

Ace thanks Banner.

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Re: Possible fix for slow starter motor speed with hot engin

Post by tink » Wed Jul 23, 2014 6:56 am

Nice work once I've sorted my loom out I'll be having a set

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Re: Possible fix for slow starter motor speed with hot engin

Post by banner001 » Wed Jul 23, 2014 10:05 am

no problems, ill be getting the rest of the wire today, so ill cut a few sets and bag them up.

leey, yours will be ready for the end of the week, ill send you my paypal email address.
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Re: Possible fix for slow starter motor speed with hot engin

Post by Leey » Wed Jul 23, 2014 1:44 pm

Cheers Banner the leads look smart so when will you start making a full loom :smt002

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Re: Possible fix for slow starter motor speed with hot engin

Post by banner001 » Wed Jul 23, 2014 3:03 pm

I could do full looms no problems...I did one for my fzr1000 from scratch, the only issues are where you have manufacturer specific connector blocks...I've just not been able to find a supplier for them. It wouldn't be cheap for a new loom either, I suppose I could look at making a loom jig if I had loads to make, but I think it's highly unlikely.
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Re: Possible fix for slow starter motor speed with hot engin

Post by Leey » Wed Jul 23, 2014 5:11 pm

If you have a link for the manufacturer specific connector blocks that would be great as it on my to do list for winter nice new tidy loom.

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Re: Possible fix for slow starter motor speed with hot engin

Post by banner001 » Thu Jul 24, 2014 11:04 am

thats just it though, i dont have any idea where to buy them from, probably why there are so many cut/shut looms about these days.

its for connectors like the CDi etc... there must be somewhere you can buy them, but im guessing its for bulk buy only (i.e. 1000+ connectors).
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Re: Possible fix for slow starter motor speed with hot engin

Post by Mori Man » Thu Jul 24, 2014 12:37 pm

They look good (y) I would be up for a set :smt001

I also found the maker of bike specific block connectors - I bought some for doing the CDI's on the race and SP modules, I had their website in my favourites but PC crashed and wiped them out :smt009

I'll do another hunt and see if I can find them again but the good news is - no minimum order , Daytona also do a whole range and they are re-usable too :smt004
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Re: Possible fix for slow starter motor speed with hot engin

Post by banner001 » Thu Jul 24, 2014 8:06 pm

Oh that would be a good find...I've had no luck, and I've searched!
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Re: Possible fix for slow starter motor speed with hot engin

Post by Mori Man » Fri Jul 25, 2014 12:55 am

banner001 wrote:Oh that would be a good find...I've had no luck, and I've searched!
What ones are you struggling to get ?

Shove up photos of them if you can.
Nothing worse than having an H and not being able to scratch it !
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