Author Topic: A10 Sunbeam  (Read 681 times)

Offline a10gf

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Re: A10 Sunbeam
« Reply #15 on: 07.07. 2015 13:05 »
A crazy idea that became reality *smile*, am appreciating all this excellent workmanship. Thanks for the photos.

A10 GF '53 My A10 website
"Success only gets you a ticket to a much more difficult task"

Offline shuswapkev

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Re: A10 Sunbeam
« Reply #16 on: 07.07. 2015 13:13 »

  like to install that alternator on my A10...

Online chaterlea25

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Re: A10 Sunbeam
« Reply #17 on: 07.07. 2015 13:25 »
Hi All,
Quote
Wonder what the extra plate between the timing covers is for
This appears to be for the front engine mount, the engine /gbox are hung on rubber mounts, you can see the snubber rubbers pointing to the sides of the cases

On the garden tractor genny, the alloy plate houses the bearing(s) and stator, the anodised "cover" is over the magnets and spins, the front of the cover forms half the V pulley with an opposing washer forming the other side

At one time I pursued  the idea of using one of these on an A10 and obtained one for experiment
Like early Alltons they suffer from magnetic pulse at low revs and I did not think this would do any good to the timing gears or dynamo drive
My next experiment was going to be to introduce a centrifugal clutch into the drive so as it would only "work" above a set lower limit
Another line of experimentation that was never concluded *pull hair out*

Cheers
John
1961 Super Rocket
1963 RGS (ongoing)

Online Klaus

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Re: A10 Sunbeam
« Reply #18 on: 07.07. 2015 13:42 »

My next experiment was going to be to introduce a centrifugal clutch into the drive so as it would only "work" above a set lower limit
Another line of experimentation that was never concluded *pull hair out*

Cheers
John

the chainsaw solution *good3*


If you think, everything is under control, you are not fast enought.

Online chaterlea25

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Re: A10 Sunbeam
« Reply #19 on: 07.07. 2015 17:06 »
Hi All,
Klaus,
Yes, or one from a weed whacker
Theres a guy in USA/Canada who makes up generators for Vincents using similar components
http://www.thevincent.com/McDouglator.html

Regards
John
1961 Super Rocket
1963 RGS (ongoing)

Offline nimrod650

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Re: A10 Sunbeam
« Reply #20 on: 17.07. 2015 19:53 »
I was at the SoF (Sunbeam) rally in Derbyshire at the weekend. Mostly S7 and S8 motorcycles in various states of use as you would expect. One of them though had been through a conversion to A10 power. I think I might have seen pics of this one before but never in the flesh. Effectively the engine was turned sideways so that the crank output ran into the Sunbeam bell housing before driving through what appeared to all be std Sunbeam transmission to the rear wheel. Given the reputation that has for a certain level of frailty you can only wonder how it copes with the A10 output. The motor was all iron and with thin flange barrels so is presumably running in fairly soft tune – and I did have to wonder how the cooling worked out for the now rear cylinder. Timing chest faced forward of course, which did look decidedly odd. But all in, quite a feat of engineering of course.

I took a whole bunch of pics and I’ll try and work out how to post some.
do any photos show reg n0 been looking for my old s7 oua 79

Online cyclobutch

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Re: A10 Sunbeam
« Reply #21 on: 19.07. 2015 20:43 »
I'm a member of the club, so I can check directly as to whether that is a 'known' bike. I'll report back in due course ...
Various, including ...
'58 Iron Head Flash Bitza


Online cyclobutch

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Re: A10 Sunbeam
« Reply #22 on: 20.07. 2015 09:43 »
Response from the SoF reads:

"The bike is in the 1978 register.
 It was owned by R Brannan of Cumbria.
 The 1978 register listed all Sunbeams owned by SOF members and to the best of my knowledge there has not been an update since."

There is a guy at the branch meetings who keeps a log of all the Sunbeams he's ever come across, so I'll also check with him next time out.

  B
Various, including ...
'58 Iron Head Flash Bitza


Offline nimrod650

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Re: A10 Sunbeam
« Reply #23 on: 20.07. 2015 18:32 »
many thanks for all your efforts i passed my test on the bike in 1961 age 16 first time