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Messages - robbsa

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1
British Bikes / Spark eroding valves BSA 1929
« on: October 23, 2019, 03:28:00 PM »
Hi All,

I need to get some slots eroded into my valves for my BSA1929. Got some new valves from BSA Bob? a few years ago but without slots to hold the pin for the valve springs. I'm in the bristol area - tried a company in porttalbot who said they could do it, but have failed to reply to my messages since.

Anyone know of any other options out there?

Many thanks
Rob

2
British Bikes / Re: Amal type 5/101 carb rebuild (BSAl29)
« on: August 30, 2019, 12:19:23 PM »
Thanks again for the tips.

I am also trying to track down a part number for the needle jet.

I spoke to amal down in salisbury and they provided me with a part (106) but it doesn't have the right fit to the carb body. the original has a thred to attach to the plate that sits on the underside of the body. I have a contact who may have a selction of spares but needs to know a part number if I can find one.

otherwise i'll be making a replacement.

3
British Bikes / Re: Amal type 5/101 carb rebuild (BSAl29)
« on: August 29, 2019, 07:40:07 AM »
Thanks guys, great advice.

4
British Bikes / Amal type 5/101 carb rebuild (BSAl29)
« on: August 28, 2019, 08:21:59 PM »
Hi All

I'm rebuilding my carb which is an AMAL type 5/101. I believe they only made this one for 1 year, but its pretty similar to the surrounding years.

I have most of the parts and picked up a few extras from AMAL a few years ago.

One issue (if its an issue) is I can't seem to remove the jet block. obviously don't want to do anything forceful as the body is in relatively good condition.

1. do you think I need to remove it to recon the carb?
2. does anyone out there know how-  there seems to be an alignment feature of the part that the main jet screws into. does this plate at the bottom unscrew from the body? does the jet block slide out from the top?

any help would be appreciated.

its off a 1929 BSAL29 if you haven't seen my other posts.

thanks
Rob

5
British Bikes / Re: BSA L29
« on: August 28, 2019, 08:05:40 PM »
Stainless steel wool arrived and piston came up nicely.

checked the bore again, and there are a few tiny spots of corrosion in there. may have to get it honed. what do you think?

I still need to double check the bore diameter and piston.



6
British Bikes / Re: BSA L29
« on: August 23, 2019, 10:44:31 PM »
Thanks for the word of caution, I’m 99% sure it’s the right one but I will check as suggested to be on the safe side.

7
British Bikes / Re: BSA L29
« on: August 21, 2019, 09:33:31 AM »
99% sure it’s alloy judging on the weight, colour and corrosion on it. I’ve ordered some stainless wool and will go gently at it with a sharpened lolly stick this weekend to try and remove the carbon. Thanks again for the help guys, although I have plenty of workshop experience doing other things and tinkering with engines and bikes that are less precious, I want to get it right on this one first time due to the age. All the tips and help is appreciated.

Feel like progress is good at the moment.




8
British Bikes / Re: BSA L29
« on: August 19, 2019, 09:39:06 PM »
Good news, I have obtained a split washer, connected up the spark plug and attached the magneto to my drill......and have a spark!

Thanks for the help.

I've built myself a jig to help me work on the engine whilst I work on the frame. and the next step is to get the piston and cylinder head back on. The bore looks okay in the cylinder but since been left in the garage, the piston has got a bit of surface corrosion and also has some carbon build up.

The surface corrosion looks like it could be taken off with a bit of emery paper, but I'm guessing this will possibly ruin my compression?should this be machined? not sure how to get the carbon crust off without damaging the piston. Any further top tips?!


9
British Bikes / Re: BSA L29
« on: August 13, 2019, 08:40:32 PM »
Thanks chaps, will let you know how I get on.

10
British Bikes / Re: BSA L29
« on: August 12, 2019, 07:35:45 PM »
this will probably seem like a really basic question too, but I could do with an image of the HT lead assembly (the end that plugs into the magneto)  - I need to make one up. It has a flat pin type terminal that makes a face on face contact. if anyone could share an image or part to show how its held in place and assure a good contact that would be a great help, but I'll probably work it out if not.

cheers
Rob

11
British Bikes / Re: BSA L29
« on: August 12, 2019, 07:33:10 PM »
Great stuff guys thanks  - I did some investigating over the weekend and concluded the same, but good to know about the date stamps - I will check.

Also, thanks for confirming the voltage regulator. I'm feeling like it might be best to source a replacement for this. I'm also assuming that this bike would be running a 6V system?!

Thanks
Rob

12
British Bikes / Re: BSA L29
« on: August 10, 2019, 05:46:10 PM »
this is the setup I have the old original one is too corroded. the previous owner seems to have had this refurbed.

I also seem to have some sort of votage regulator?

13
British Bikes / Re: BSA L29
« on: August 09, 2019, 08:59:15 AM »
Great thanks all, I’ll try and post some photos. Believe it is either the option that came with the battery or a mag/Dyno with electrics has been retro fitted. I’ll post a photo of the parts I have.

14
British Bikes / BSA L29
« on: August 08, 2019, 10:00:19 PM »
Hi there,

anyone out there got any knowledge of 1920's BSA side valves. I have a BSA l29 that I have had for a few years and haven't touched it for a while. now trying to get my teeth into it again.

One of my first questions is around the ignition, magneto and then lighting setup. The bike I assume needs no battery to start and run, but what does the lighting require? I have no setup for this. I'm assuming some sort of 6v supply (it has a Lucas headlight, not a acetylene headlight).

Sorry if this is a naive question.

thanks
Rob

15
British Bikes / 22g thread size - 5/16 Bsf
« on: May 25, 2012, 07:19:06 AM »
Hi All,

Maybe being really stupid here, but unfortunately i'm of the metric generation, so need a little help! the needle jet on my carb is not as the standard one from Amal, the bore that it fits into is larger than the fit they provide. Its on a type 5 carb so only run for a very short period of time so could have been originally like this or could have been modified at some point to fit a home made jet.

Anyway, the thread on my jet measures at 22G on my thread gauge that i have just purchased off ebay. 22G! whats this! is this refereeing to the TPI, really annoying as all the other sizes give the fractional measurement next to it too. I believe from looking on the internet that this may be a 5/16 bsf thread. Can anyone confirm.

thanks

Rob

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