The BSA A7-A10 Forum

Technical => Lucas, Electrical, Ignition => Topic started by: Caretaker on 09.03. 2006 22:49

Title: Magneto repair?
Post by: Caretaker on 09.03. 2006 22:49
Hi, who are currently the best in England to take care of my magneto? Twin (with manual control), needs everything new except the body, and want a perfect job that lasts for a while.
Regards

Edit August 2009:  I did start on a quite complete magneto overhaul, see http://a7a10.net/forum/index.php?topic=1375.0 for details, story and pictures
Title: Re: Magneto repair?
Post by: Michael Yates on 14.03. 2006 08:58
I tried FTW 3 years ago and found it looked superb but was expensive.  But when on bike using dial gauge for advance (A10 magneto with manual advance) there was massive difference between each cylinder.  Phoned to complain and told bring it in and they could grind the slip ring.  No satisfactory answer why they didn't check it, they have the magmaster machine in there work shop.
I would go SRM not cheap but am impressed with there service.
Now fitted SRM digital in mag body and its brilliant and maintenace free.
Mikey
Title: Re: Magneto repair?
Post by: Caretaker on 14.03. 2006 11:40
Thanks for the usefull answer, you experienced exactly what I am trying to avoid, having to find the faults after an expensive repair and all the hassles with complaining etc.  :(  Have heard before that not all repaired magnetos have the L R cylinders firing accurately, you confirmed my worries. So SRM it will be. And will think about electronic, altough I have an affinity towards sticking with the original systems.

Regards
Erling
Title: Re: Magneto repair?
Post by: beezerbum on 15.03. 2006 01:13
Also - anywhere over here in the USA?  I have a bum K2F on my other A10.  I know I can ship it to England for sure.
Title: Re: Magneto repair?
Post by: Richard L. on 17.03. 2006 06:17
You could spend a lot of money shipping a magneto back and forth to the UK. Repairing the unit yourself is not out of the question. Try www.magneto.co.uk for parts. Of course SRM is great, but they might get their parts from this company. Www.magneto.co.uk may even answer som of the questions that come up, like, how do you replace the condenser? Probably the most mysterious aspect.
Title: Re: Magneto repair?
Post by: beezerbum on 17.03. 2006 14:54
Thanks!  I've got most of my bike done, but the mag has NO spark.  I think from my testing, the condensers are the faulty bits.  Maybe a complete replacement armature with the new condesers in itwill be the best. I'm sure they are original. Thanks again!
Dave
Title: Re: Magneto repair?
Post by: Caretaker on 19.03. 2006 19:10
Replacing the capacitor is difficult, but with patience it's no problem. The capacitor in the K2F is moulded into some hard stuff at the drive side of the armature. You have to dig it out carefully without damaging the wiring, then solder on an new one. I filled up with silicone sealant. Results were fine & lasting.

But now the only OK part in my magneto is the capacitor, everything else is worn out & falling to pieces. Well, I could fix it myself up to very-near-perfect, I now how to correct LR firing, shimming etc, but am short of time & energy so I'd like to pay for someone to make it 100%.

Regards
Erling
Title: Re: Magneto repair?
Post by: roadrocket on 21.03. 2006 20:29
Just to add another possibility; In Copenhagen Denmark is man who does excellent mag and dynamo etc. rebuilds. More and better windings than new, better sealing, the whole thing straightened in a lathe etc. E.S. Electro if you want contact address I can dig it up. Had mine done and dynamo too; great stuff!

Roadrocket
Title: Re: Magneto repair?
Post by: rocket man on 12.03. 2009 21:43
hi mate go for electronic carnt go wrong less parts to go wrong i have it fitted in to my original mag and had no probs srm do a good kit also i would think about converting to a 12 volt system better lighting
Title: Re: Magneto repair?
Post by: groily on 12.03. 2009 22:33
Disagree rocket man (re sparks) in the very nicest possible way unless you've got an alternator! (I know, Luddite tendency, little faith, old fart etc). Agree with all the plus points of the box of tricks - it's just the small problem of reliable long-term charging  . . and roadside sparks maintenance. Agree with you 100% re 12v conversions though.
 
What do I know - but there are 4 people in the UK I think I'd send a mag to - SRM, Sean Hawker, Tony Cooper (v highly recommended indeed for quality and price by many v happy punters) and Dave Lindsley. Personally, I've recently had one complete K2FC from SRM, and two additional exchange armatures. Quite-to-very happy. In future, I'll go for the exchange guts and assemble-myself option, as armatures are not that bad price-wise and all the mechanical bits can be got, whereas complete rebuilds start to get a bit costly compared to the cost of the parts. Reasonable enough, skills don't come free.  But while none of us has a Magmaster, obviously, if the coil has been wound and the pole pieces attached correctly, the rest should follow. If in doubt, cam rings are out there too.

Title: Re: Magneto repair?
Post by: snowbeard on 13.03. 2009 03:13
I've had a few offers over on the "other" brit bike site, JoeA sounded competent (in the states), he has the body remagnetizing unit also, and sounds like he knows what he is doing. 

Also Beno Rudi (sp?) in Atlanta, GA was highly recomended by someone in the GAMBA group. I spoke to him on the phone in my time of need and I felt that if I had the money I would have felt very comfortable sending him mine.  many years of experience and a solid track record.

it's been over a year since my mag went south and I did all the research, and I can't go onto that site from my home connection for some odd reason, but I am the same screenname there if you wanted to search on my posts?
Title: Re: Magneto repair?
Post by: BSA500 on 13.03. 2009 09:30
I whole heartly recommend Independent ignition(they refeathered the points key-turnaround 1 day) also many years ago rebuilt my mag.Years later the mag failed so I sent it back to them for a report,they found a batch of slip rings were faulty and repaired my mag free of charge even though it was years outside gurantee.The quailty and knowledge of these people is just brilliant.
Andy
Title: Re: Magneto repair?
Post by: zitman on 13.03. 2009 12:10
I have had two done by Tony Cooper and my mate has had more done.  No problems.  Even when one of them had fuel leak into it and caused trouble Tony Cooper repaired it for nothing.

He is certainly the guy I would have do mine in future.

Z
Title: Re: Magneto repair?
Post by: Chrisf1 on 13.03. 2009 12:14
I have to reccomend Tony Cooper he did mine last year the service was excellent the work good and very reasonably priced
Title: Re: Magneto repair?
Post by: rocket man on 13.03. 2009 21:34
hi again here is a pic ove the kit its very good had no probs with it myself
Title: Re: Magneto repair?
Post by: rocket man on 13.03. 2009 21:44
also you have to  get the 12 volt battary  the dinamo has a belt drive kit on which has a large pulley on it which charges the battry a lot better
Title: Re: Magneto repair?
Post by: Triton Thrasher on 15.03. 2009 08:14
hi again here is a pic ove the kit its very good had no probs with it myself

I didn't have much luck with Boyer Micro Power. Have you done many miles with it?
Title: Re: Magneto repair?
Post by: rocket man on 15.03. 2009 14:21
yes over 8000 miles on mine no hasle
Title: Re: Magneto repair?
Post by: Triton Thrasher on 15.03. 2009 18:54
yes over 8000 miles on mine no hasle

Good.  There are winners and losers!
Title: Re: Magneto repair?
Post by: diyjonesy on 13.09. 2010 21:08
I have to reccomend Tony Cooper he did mine last year the service was excellent the work good and very reasonably priced

Have you got any contact details for Tony Cooper?
Title: Re: Magneto repair?
Post by: a10gf on 13.09. 2010 21:30
A forum search result (http://www.a7a10.net/forum/index.php/topic,2494.msg16111.html#msg16111)
Title: Re: Magneto repair?
Post by: chaterlea25 on 13.09. 2010 22:07
HI All,
I would also recommend the people mentioned already, I have had work done by all of them from time to time
Independant ignition have sold their winding busineess, I have no news of how the new co. is

As an interesting aside  for comparison purposes
On the Irish rally the other week, 130 bikes @500 miles each = 65000 bike miles
(OK the weather was good)
One magneto failure, it was just overhauled and the spark disappeared?? It was persuaded back to life with some TLC by one of the guys
I lost count of how many electronic and battery/coil ign bikes gave trouble  ???? ???? ???? ???? ????
batteries failed, pickups got oil on them, charging systems failed (not all dynamos) coils etc, wiring issues
and so on,
So for me I'm sticking to my mag *smile*

Cheers
John O R
Title: Re: Magneto repair?
Post by: a101960 on 13.09. 2010 23:11
Quote
Have you got any contact details for Tony Cooper?

Tony Cooper Motorcycles
110, Olive Lane,
Halesowen,
West Midlands,
B62 8LT

Tel 0121 5592405
Fax 0121 5612410
Title: Re: Magneto repair?
Post by: iansoady on 14.09. 2010 12:21
AFAIK:

Tony Cooper Motorcycles
110, Olive Lane,
Halesowen,
West Midlands,
B62 8LT

Tel 0121 5592405
Fax 0121 5612410
Title: Re: Magneto repair?
Post by: andy2565 on 14.09. 2010 16:33
tonys very good,but i think he's very busy,and a four week wait,but good things come to he who waits.
Title: Re: Magneto repair?
Post by: cotterpinkid on 14.09. 2010 16:41
Tony Cooper Motorcycles
110, Olive Lane,
Halesowen,
West Midlands,
B62 8LT

Tel 0121 5592405
Fax 0121 5612410

Just had mine done for the A10 Plunger. He comes recommended from various sources including my mates down at the Velocette Club. Fair price and was recently turned round in about 3 weeks.
Title: Re: Magneto repair?
Post by: bikerjohndavies on 14.09. 2010 18:05
I would also like to recommend Paul at

A.P.L Magnetos
1 Maple Close
Shaftsbury
SP7 8RF

Tel: 01747 852136
Mob: 07860828546

He has done a number of mags for me and all have been well reconditioned, quick turnaround if you just want it to work, a bit longer if you want to look like new, and all at a reasonable price. I understand that he rewinds the armatures for a number of repairers including SRM and Tony Cooper.
Title: Re: Magneto repair?
Post by: Triton Thrasher on 15.09. 2010 11:13
tonys very good,but i think he's very busy,and a four week wait,but good things come to he who waits.

Yes, but Tony took exactly the time he said he would, on my Mag.

That was one week then.

Almost all other repairers seem to lie about such things.