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too much compression ??

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steve.w
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#16 PostAuthor: steve.w » Sun Oct 21, 2012 3:05 pm

zed1015 wrote:If you still have probs after checking all the wiring etc get a later four brush starter from a J/gpz.
They are higher torque and should easily do the job.
Also if replacing the battery those Motobatt gell ones are very good and deliver more cranking amps than a normal lead acid one.
yep motorbatt are excellent :wink:

bob fell
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#17 PostAuthor: bob fell » Tue Oct 23, 2012 11:02 am

ok thanks all good advice, I will start with connections, wiring, battery, then timing etc, will check out some prices on the stuff mentioned

will let ya know

thx

buzzard
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compression

#18 PostAuthor: buzzard » Tue Oct 23, 2012 12:26 pm

I would try advancing the ignition timing so it fired at 10 degrees btc instead of 20 degrees standard , this would then make fully advanced timing 30 degrees btc instead of 40 degrees btc, but this is fine in a high comp motor. Alternatively if you fit a Z1 advance/ retard assembly they fire at 5 degrees btc and fully advance to 40 degrees btc. Buzzard
Every man should have a shed (for bikes obviously..)

bob fell
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#19 PostAuthor: bob fell » Tue Oct 23, 2012 8:01 pm

I fitted electronic ignition a few ears ago, it may not be ste right as my rev counter doesn`t work very well, I think you need to set the timing to a certain rev figure , is that right ??

needaz1100r
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Re: compression

#20 PostAuthor: needaz1100r » Tue Oct 23, 2012 8:09 pm

buzzard wrote:I would try advancing the ignition timing so it fired at 10 degrees btc instead of 20 degrees standard , this would then make fully advanced timing 30 degrees btc instead of 40 degrees btc, but this is fine in a high comp motor. Alternatively if you fit a Z1 advance/ retard assembly they fire at 5 degrees btc and fully advance to 40 degrees btc. Buzzard


Not being picky, but isn't that retarding the ignition Buzzard?

Do you ever see Colin Cowley or is that a name from the dim and distant past for you as for me?

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Pigford
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#21 PostAuthor: Pigford » Tue Oct 23, 2012 8:11 pm

bob fell wrote:I fitted electronic ignition a few ears ago, it may not be ste right as my rev counter doesn`t work very well, I think you need to set the timing to a certain rev figure , is that right ??



....only if an optical unit, or an old magnetically fired thing......

Set a Dyna S statically with the advance unit held at "full advance" - by turning ignition on and watching an earthed sparkplug, errrr, spark :|
And on the 7th day... Zeds were created!

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ADRIAN H
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#22 PostAuthor: ADRIAN H » Tue Oct 23, 2012 8:11 pm

bob fell wrote:I fitted electronic ignition a few ears ago, it may not be ste right as my rev counter doesn`t work very well, I think you need to set the timing to a certain rev figure , is that right ??


Dyna S - set up from memory 3500 revs, I believe ?
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Sunny Bournemouth. Dorset. UK.

buzzard
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#23 PostAuthor: buzzard » Wed Oct 24, 2012 10:23 am

Needaz1100r, your right, slight slip up there but you know what I ment, starting the engine at 10 degrees btc is much easier than 20 degrees btc, that's the setting I used on my 1425cc aspirated bike without any grief. And answering you other question I haven't seen Colin Cowley for 20 years, but that guy could do one hell of a wheelie!!!!! How do you know him? Buzzard
Every man should have a shed (for bikes obviously..)

needaz1100r
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#24 PostAuthor: needaz1100r » Wed Oct 24, 2012 12:01 pm

Buzzard, it was obvious what you meant, and a reasonable thing to do, I have experience of it starting monster compression Harley engines - the sort you can't kickstart without your mate sat on your shoulders.

I used to work with Colin in his (our) Honeywell days, the last time I saw him was at that pub in Hook about 12 years ago.

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Mark Tiller
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#25 PostAuthor: Mark Tiller » Fri Nov 09, 2012 11:03 am

just bought a Motobatt from Busters(M&P) very good, noticeably more oomph

http://www.ebay.co.uk/itm/271072137358? ... 1439.l2649
07962421462

Bruce Sexton

#26 PostAuthor: Bruce Sexton » Fri Nov 09, 2012 1:20 pm

neilbarrett wrote:do what i have to do sometimes,a good push and bump :wink:


Is that allowed nowdays? :shock:


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