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Hans 1948 D1 rigid
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Hans Kreuzen
Queensland Australia
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June 21, 2017 - 9:20 pm
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Same here, very busy, I will finish my 48, and when it's done, this forum will be the first to know.

Take carewave

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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ianlambert
Perth, Western Australia
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August 13, 2017 - 9:33 am
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Hi Hans,

You mentioned an alloy headlamp: I have just picked up an early-ish Bantam (1950 spring frame - 1951 engine) and in the box of bits which came with it was a bashed about alloy headlamp shell with the same interior as you have in your finished headlamp shell. Do you know if the alloy version was an after-market replacement? Thanks also for pointing out the differences in silencers for rigid and plunger: I'd ordered a new one for one of my other Bantams (1950 rigid frame, 1951 engine) and it has the plunger indentations. Fortunately the box of bits contained an original rigid silencer sans indentations, though the baffles have probably long since departed, and at least I can use the new one for the newly-acquired 1950 spring frame bike.

Does your 1948 have the three-magnet flywheel? My D1s have the six-magnet flywheels, but one has the Geni-Mag coils. I've seen mention that the six-magnet later flywheels can cause the bulbs to blow: is that why you fitted a regulator?

As an aside, my third Bantam is a 1955 spring-frame D3 in very oily rag condition, though it's a genuine Perth-delivered matching numbers D3; Mortlock Bros., Hay Street, being the sole importers for BSA back then.

I think I might have to live with play in the forks on both the D1 bikes, as the work involved in fixing the bushes sounds pretty full-on.

Thanks for the running commentary thus far,

Ian

1974 Honda CB350 Four, 1951 Triumph 6T Thunderbird, 1950 BSA C11, 1950 D1 Rigid, 1950 D1 Plunger, 1955 D3

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Hans Kreuzen
Queensland Australia
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August 27, 2017 - 12:10 am
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Hi Ian, Sorry for not replying to your post, the notifications where turned of for some reason.

However, I think I answered most of your questions during our phone conversation, but if there anymore info you need, just ask.

As for my 48 rigid resto, still waiting on the engine rebuild to be finished, I think I'll have a go myself, how hard can it be, ha ha,

Hans

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Hans Kreuzen
Queensland Australia
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August 27, 2017 - 8:12 am
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My friend and I have been working on the engine all afternoon, We managed to seal the engine casings together, Fitted new gear select spring and ball, The Crank and end play is great, but we had trouble selecting 3rd gear,it just won't select, so tomorrow night after work, we will start again, disassemble and see what we did wrong or maybe the gear fork bracket etc. might be to worn.

At least we are working on the 48 again.fingers-crossed SOOOOOOOOOOOOOOOOOO CLOSE.

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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BSAdave
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August 28, 2017 - 10:05 am
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Yeeharr, glad to see you working on it again.

Verbum satis sapienti

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Hans Kreuzen
Queensland Australia
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August 28, 2017 - 12:06 pm
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Determent to finish the resto Dave, Worked on it again today after work and after pulling the casings apart 3 times in a row, I found the problem to be the gear selector plate failing on the ball and spring housing edge (hard to explain), so tomorrow night we will put it all together again and see if we can get third gear with the problem fixed, I HOPE.fingers-crossed

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Mags 1
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August 28, 2017 - 12:14 pm
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Hans Kreuzen said
Determent to finish the resto Dave, Worked on it again today after work and after pulling the casings apart 3 times in a row, I found the problem to be the gear selector plate failing on the ball and spring housing edge (hard to explain), so tomorrow night we will put it all together again and see if we can get third gear with the problem fixed, I HOPE.fingers-crossed  

Also watch out for wrongful installation of bottom bolts lock washer, if in the wrong position it can foul the selector arm.

A common enough mistake, not mentioned in the manuals.

Four now on the road and at least several in bits.

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Hans Kreuzen
Queensland Australia
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August 28, 2017 - 12:24 pm
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Thanks Mags, I'll be sure to check that tomorrow, great information.thumbs-up

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Hans Kreuzen
Queensland Australia
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September 13, 2017 - 12:39 pm
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Waiting on parts from Rex  for the 48 engine and my friend helping with the engine has been ill, so bit of a hold up again, but it will get finished.

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Hans Kreuzen
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October 28, 2017 - 10:31 pm
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We fitted the new gear select spring collar today on my 1948 rigid engine, It came out and the new one fitted easy with the help of a heat gun, just like ** Please log in to view ** said it would.
We also fitted a extra cup washer under the spring that holds the selector plate on... But we still cant select all the gears when we bolted the casings together,, It will be just a process of trying to work out what the problem is....I must be doing something wrong

I'll have another look on Monday night after work.

At least we are working on the engine again so I can finish the resto.

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  • sp_PlupImage gear-select-spring-housing.jpg(100 KB)

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Hans Kreuzen
Queensland Australia
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January 4, 2018 - 10:26 pm
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Hi everyone, I know I am slow but this is ridicules, It's taken 2 years and 9 months to finish my 1948 D1 restoration, but I hope to start the engine today and finish the resto.

I will post pictures soon.

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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dimitris
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January 5, 2018 - 5:54 am
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Hi Hans. You are to slow indeed... did you have mechanical issues with your chainsaw?? rofl

BSA D1, 125cc (1952)---BSA D10 Sport 175cc (1967)---Triumph Cub T20 (1960)

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Hans Kreuzen
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January 5, 2018 - 10:55 am
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Hi Dimitris, Great to hear from you and, No I did not have trouble with my chainsaw, rantingha ha, 

I AM FINISHED, FINALLY, 

It's as close as I could get to original.

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  • sp_PlupImage 1948-D1-Bantam-1.jpg(123 KB)
  • sp_PlupImage 1948-D1-Bantam-4.jpg(154 KB)
  • sp_PlupImage 1948-D1-Bantam-5.jpg(86 KB)
  • sp_PlupImage 1948-D1-Bantam-8.jpg(127 KB)

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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cocorico
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January 5, 2018 - 11:33 am
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Absolutely superb Hans. tip-my-hat

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dimitris
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January 5, 2018 - 12:00 pm
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cocorico said
Absolutely superb Hans. tip-my-hat  

As always...!! I think they were not so shiny even the day coming out of the BSA factory....bow

Fork gaiters where not used that year? 
You are also missing the ** Please log in to view ** that used to be a standard feature on  the 48'scheers 

BSA D1, 125cc (1952)---BSA D10 Sport 175cc (1967)---Triumph Cub T20 (1960)

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Hans Kreuzen
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January 5, 2018 - 12:14 pm
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Thanks for your comments guys, gaiters are not used in 1948 and the end caps are smooth without the groove.

Pressure caps, ha ha, are you still riding your Banty?

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Hans Kreuzen
Queensland Australia
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January 5, 2018 - 12:16 pm
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There is a video clip of the engine running on the BSA Bantams Australia facebook page

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Blue Heeler
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January 5, 2018 - 1:11 pm
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Stunning!

I`m off to Facebook to have a listen.

Blue

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Hans Kreuzen
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January 7, 2018 - 2:53 am
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Just paid the club membership for another 2 years thumbs-up

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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