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Messages - BSAfrica

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British Bikes / Re: 1949 Vellocet 350 help please guys!
« on: May 27, 2012, 04:37:17 PM »
The start of the above mentioned Ariel project, and the only reason I took it on is because I hate to see old motorcycles going to the melting pots.   >:(

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British Bikes / Re: 1949 Vellocet 350 help please guys!
« on: May 27, 2012, 04:35:24 PM »
As Luke mentioned, any old bike can be restored, took on this Ariel, now in year 3 and making progress, nearly there.

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British Bikes / Re: GB Gearbox Help Needed
« on: October 02, 2011, 04:26:16 PM »
Time for an update. Kick start is sorted out, and not by the way I did it as per the previous post, that turned out to be more of a bodged job than anything else. Bottom line, pinion was seized on the bush as a result of water ingress. Got a new bush and pinion ratchet, all works fine, at least, everything in that part is new.

Next milestone is to get all the gears to engage without having to bend the gear selector lever in the process.

Cheers from South Africa

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British Bikes / Re: GB Gearbox Help Needed
« on: July 18, 2011, 03:35:42 PM »
Thanks for the replies.

According to the diagram for the GB gearbox, it appears that the kick start ratchet pinion is suppose to slide on a separate bush, kept in place by the spring. The one in my gearbox is a single piece, pinion and ratchet is one. Measuring the the length of the pinion and the ratchet drive, found to be about 0.5 mm too long to give enough clearance for the system to release. Bit of home engineering (using a bench grinder) to take off the 0.5mm, assembled and seems to be working just fine. Could be that with time, the thread was cut deeper, thus when fully tightened, not enough clearance was available.


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British Bikes / Re: GB Gearbox Help Needed
« on: July 16, 2011, 01:51:00 PM »
Just another picture of inside of the gearbox

Barend

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British Bikes / GB Gearbox Help Needed
« on: July 16, 2011, 01:46:04 PM »
The gearbox is a Burman GB type, part of a basket case rebuild of a '54 Ariel KH500 plunger project. When I first opened the gearbox, there was evidence that at some time the gearbox was half filled with water, thus the "high" water mark. The kickstart ratchet pinion nut at the time of stripping was not fully home, thus, when assembling the gearbox, this nut was fully tightened and secured with a tab washer. Problem was then that the kick start ratchet would not returned to the home position as the kick start ratchet pinion and kick start ratchet drive would not disengage. Only way to get this to happen was to slacken the nut, however, this results in the ratchet drive and pinion not fully engaging, causing them to slip when pressing the kick starter. Bushes and bearings were replaced, as well as all items showing excessive wear or corrosion, including the kick starter ratchet drive and spring.

Question: Should the ratchet nut be tightened fully home, which in this case does not allow allow the ratchet drive and pinion to disengage, or is there something else that I need to look at? Just does not seem normal that the nut should be halfway out to get the system to work.

Advise and suggestions will be much appreciated

Barend

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Autojumble / Wanted - '54 Ariel KH500 Fieldmaster Brake Pedal
« on: June 14, 2011, 05:55:39 PM »
Looking for the rear brake pedal for a KH500, plunger frame.

Regards
Barend

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British Bikes / Re: Ariel KH500 Primary Drive Sprocket Alignment
« on: June 14, 2011, 05:43:45 PM »
John, thanks for the reply. Tried all 5 motorcycle dealers in town (Richards Bay), no one stock Regina range of chains. Will have to go to plan B, import from UK.

Next question. What should the torque setting be on the cush drive retaining nut, or is it a matter of making use of a "light" locktite and then tightening as best as you can?

Best regards
Barend

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British Bikes / Re: Ariel KH500 Primary Drive Sprocket Alignment - next questions
« on: June 04, 2011, 06:25:17 PM »
Sorted out without having to use a spacer, when measure to the bottom of the clutch drive sprocket, no spacer is required.

Now, next challenge - Using a 428 motorcycle chain as primary chain, it seems to foul on the primary chain case behind the clutch sprocket. Can it be that the new generation chains are wider that the original? Any suggestions? Is it a standard practice to use a half link on these primary drive chains, with a 21 teeth main and 44 teeth secondary sprocket, no adjustment of the gearbox will give me enough slack to use full sets of chain links.

Last question, for those with a KH500 Plunger frame, what is the length of the brake lever measured from the pivot to the front of the lever.

Much appreciated for the help.
Barend

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British Bikes / Re: Ariel KH500 Primary Drive Sprocket Alignment
« on: May 30, 2011, 06:19:03 PM »
Thanks John, I did not took that into consideration,will change my order at the engineering company, revision 2.

Regards
Barend

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British Bikes / Re: Ariel KH500 Primary Drive Sprocket Alignment
« on: May 29, 2011, 08:23:28 AM »
Thanks for the reply, indeed uses a cuch drive. Seems that making up a spacer that will go over the slider to fit between the sprocket and the slider shoulder will solve the problem
Barend

How do you add a picture?

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British Bikes / Ariel KH500 Primary Drive Sprocket Alignment
« on: May 28, 2011, 05:02:42 PM »
Found the primary drive sprockets to be 5 mm out of alignment. With the sprocket on the clutch side as reference, engine side sprocket is 5 mm closer to the engine. Can it be shimmed, or is there an alternative method to align these sprockets.

Ariel KH500 1954

Thanks
Barend

13
British Bikes / Re: triumphs
« on: July 04, 2008, 02:58:50 AM »
Hi Beesa,

I did a rebuild of the '71 A65T, started with no knowledge of British bikes, previously only done Japanese. Usefull was a parts manual for the bike, and a Haynes workshop manual. Build up a library of pictures from bikes that gets advertised on e-bay, normally the seller would place a number of photos from different angles, became very usefull in getting detail during the rebuild. Drop me an e-mail at barendj@lantic.net, based in Richards Bay, South Africa. Regards, Barend

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British Bikes / Re: triumphs
« on: July 02, 2008, 05:50:42 PM »
Beesa, maybe I can help with electric diagrams, done a A65T OIF while ago, very similar. Curently buzy with a Triumph T110 pre-unit. Regards, Barend

15
British Bikes / BSA A65T, '71
« on: May 06, 2006, 11:23:21 PM »
Although having a number of years motorcycle experience, mostly Japanes, ownership of a British 1971 BSA 650 Thunderbird is new, having bought it in running condition for the equivalent of 400 British pounds. Being in the process of refurbishing the motorcycle, I am amased at quility of the welding, more than once I gave it serious thought to grind it all off and have it welded to Japanese standards, but I suppose, that is what brings character to these older bikes. Spares here in South Africa is not easy to come by, however, found some suppliers in New Zeeland and US who can supply most items needed to do a full restoration, only seems to have problems locating the air filter box with covers as well as the side covers for the bike, can anyone help. What is the length of the dip stick (oil in frame) Barend, South Africa

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