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New Owner - Starter Return Spring

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New Owner - Starter Return Spring

Post  duanebennett on Sun Jun 24, 2012 9:32 pm

Hi Guy's - Gals
Just joined the forum
I have just purchased a 1961 Plover project from a well known online auction site
The bike has not been on the road since 1974 - Fuel tank completely rotted through - etc
I have stripped the engine finding the rings seized and the end where the gudgeon pin circlip fits had bursted out of the piston (circlip still present)
Engine is back together with new gasket kit , new std piston, rings etc and starts first kick
I would like help and advice on the following questions if possible.
1) Does the engine have an insulated spacer between barrel and carb?
2) Does the gearbox have a return spring on the kick start? If so where is it?
And where will I get one from?
3)Where can I get a primary chain from? - The chain does not look to have a joining link.
4)I have currently jury rigged the bike up to run on a donor (bsa bantam) fuel tank and am using a 6 volt battery and coil from the bantam as the ignition source - I could get a spark from the magneto BUT the spark seemed to disappear when in the cylinder - I am getting a spark from the HT lead even though it is not connected to the points and condenser (Approx 70 volts AC measured at tickover) - Is this normal?
Thanks
Duane




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Which Model is it?

Post  ChrisTurner on Mon Jun 25, 2012 7:48 pm

I think the earlier Plover had a Villiers engine and the later model an AMC one. Which does yours have?

Chris
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ChrisTurner

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Spark

Post  kerabo on Tue Jun 26, 2012 6:50 am

I am not quiet sure how you are checking you spark but it is more like several 1000v when working correctly and even nthen not AC. The best way is to hold the lead away from the block as its kicked over. To test the lead you need ohms on you meter but i cant remember the scale you need.

Regards Ken
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kerabo

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Join date : 2008-02-12
Age : 68
Location : Falcon 87..1936 Cruiser 39. Falcon 81 Green Lane bitsa. Sunbeam S8. Honda Deuville.

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Re: New Owner - Starter Return Spring

Post  duanebennett on Tue Jun 26, 2012 8:22 am

ChrisTurner wrote:I think the earlier Plover had a Villiers engine and the later model an AMC one. Which does yours have?

Chris

Hi Chris - The engine fitted to my plover is an AMC 15T
Thanks for the reply
Duane

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Re: New Owner - Starter Return Spring

Post  duanebennett on Tue Jun 26, 2012 8:30 am

kerabo wrote:I am not quiet sure how you are checking you spark but it is more like several 1000v when working correctly and even nthen not AC. The best way is to hold the lead away from the block as its kicked over. To test the lead you need ohms on you meter but i cant remember the scale you need.

Regards Ken
a
Hi Ken - I put the multimeter on the lead and the other lead on the ground - I am definetly reading a AC voltage at tickover of 70 volts - It does produce a spark from the end of the lead when put against the frame
Please note I have the primary side disconnected and the coil is getting no trigger signal from the points / condenser assy.
I assumed the secondary HT coil must be generating a voltage from the moving magnets on the flywheel
I have taped this up at the moment and have been running the bike on a donor coil and battery set up.

I am more interested in getting the kickstart returning and the location of the return spring (If fitted -that is)
Thanks
Duane

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Some Answers - Maybe.

Post  ChrisTurner on Tue Jun 26, 2012 5:57 pm

If you are running the engine with a remote donor battery and coil then the output from the original flywheel ignition coil is very likely to be of low voltage as it is not being amplified by a condenser. The coil is, in effect, acting as a generator. The function of the condenser is to store and release compounded energy at a specific point in the cycle, i.e. when the points open. hence the reading you have obtained with the coil acting as a generator may well be correct. I fear that the only way to test the individual components may be by substitution. In any event, you will never get a (worthwhile) spark at the plug without a condenser in place.

The kickstart is indeed fitted with a spring but I am sure that I heard somewhere that parts for these engines are very scarce so you may have a bit of trouble finding one. if it helps, I have a handbook and parts list for your model and will send an electronic copy if you supply an email address.

The primary chain should be fairly easy to source from a chain specialist as it will be a standard size. if it is anything like the Villiers engine fitted to the earlier models, you will have to remove the engine sprocket and clutch drum to change the chain. Alternatively, butcher the old one off and buy a replacement with a spring link. Try this man. http://www.the-chain-man.co.uk/.
Chris
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spark

Post  kerabo on Tue Jun 26, 2012 6:40 pm

If your using an external battery and coil. You do have that battery earthed to your frame ?
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kerabo

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Location : Falcon 87..1936 Cruiser 39. Falcon 81 Green Lane bitsa. Sunbeam S8. Honda Deuville.

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15T Primary Chain and K/S return spring

Post  FB vincent on Wed Jun 27, 2012 4:42 am

As per the instruction book for the 15T, the Primary Chain is Renold No.54130 58 links, 3/8" pitch, 1/4" roller, .225 wide, pre-stretched.

The Kick Start return spring (Part No.040043) for the 15T gearbox is the same as that fitted to the AMC 20T and 25T engines.

FBOC can provide the Instruction Manual and parts list.

FB vincent

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Re: New Owner - Starter Return Spring

Post  duanebennett on Wed Jun 27, 2012 5:21 am

Hi Guys / Gals
Chris - Thanks for the info - please email PDF etc to

I have located a spring from Sheffield British Motorcycles and collected it today 26-06-12
Can't Add External Links for 7 days! - New Member
Thanks
Duane

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Re: New Owner - Starter Return Spring

Post  duanebennett on Wed Jun 27, 2012 5:25 am

Chris duanebennettATvirginDOTnet


Last edited by duanebennett on Wed Jun 27, 2012 5:26 am; edited 1 time in total (Reason for editing : spelling mistake)

duanebennett

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received email

Post  duanebennett on Sat Jun 30, 2012 7:37 am

Thanks Chris

duanebennett

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Re: New Owner - Starter Return Spring

Post  duanebennett on Sat Jun 30, 2012 7:40 am

FB vincent wrote:As per the instruction book for the 15T, the Primary Chain is Renold No.54130 58 links, 3/8" pitch, 1/4" roller, .225 wide, pre-stretched.

The Kick Start return spring (Part No.040043) for the 15T gearbox is the same as that fitted to the AMC 20T and 25T engines.

FBOC can provide the Instruction Manual and parts list.

It seems to be the same size as BSA Bantam chain so plenty of it about
I will get 58 links and a joining link
Is there any way to adjust the chain? Or Is it Plug and Play?
I see on the BSA B31 that the gearbox can be adjusted and is on slots

duanebennett

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Gearbox Jumping Out of First!

Post  duanebennett on Mon Jul 09, 2012 12:45 am

Hi Guys - Gals
I have fitted the primary drive chain - made a cork gasket for the chain case - adjusted the clutch etc
I have welded up the petrol tank - not pretty but will do till I source alternative
I have been riding it around my garden - neighbours think I am a nutter!
The bike jumps out of 1st gear and has to be toed back in
I have had the gearbox to bits - to change the kickstart spring - chris sent me a email with a breakdown of the gearbox - not too clear but its better than nothing (thanks chris)
The first gear engaging dogs don't look sufficienty worn to cause a problem
The first gear is floating and seems to be held in position by the kick start shaft
Is there supposed to be a way to eliminate the end float - secure this gear from moving on the shaft - Any help would be great - I see the parts book mentions shims - where do these fit?
Thanks
Duane

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Re: New Owner - Starter Return Spring

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