Author Topic: Project "Laubfrosch" - the trials hybrid  (Read 13437 times)

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Adrian II

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Reply #105 on: April 30, 2020, 03:15:22 pm
If you want that type of filler cap, think BSA export. While on the subject of BSA you could fit an alloy tube down the middle and you could have the thing all rubber mounted.

ebay item 143231834430, 2 inch. Only £20.

A.

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grumbern

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Reply #106 on: May 02, 2020, 08:20:59 am
Yes, something like this. I also found a nice "Bonora" cap, but those are stupidly expensive! :'(
Maybe a self-build? :o

Yesterday I allmost finished the left hand panel and top.
Here it is roughly cut out and started to shape:




Getting close!




After that I masked the right hand panel using tape:




Peeled off and turned inside out it makes a good but sticky stencil for a mirrored panel:




Excess material marked to be cut:




Here are the three parts for the tank body. At first glance the panels look quite symmetric:




I taped the parts together and they fit quite well. The left side seems a bit more flat to me though. I will need to work on this. But the "tank" makes for a nice slim shape. It's still a bit high in the front, but tihs will be taken care for by the tunnel cutout:





So long,
Andreas


Adrian II

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Reply #107 on: May 02, 2020, 02:56:35 pm
That shape reminds me of the BSA B50MX alloy fuel tanks.

A.
Grumpy Brit still seeking 500 AVL Bullet perfection! Will let you know if I get anywhere near...


grumbern

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Reply #108 on: May 02, 2020, 10:41:24 pm
You're right, but I guess this really is just the perspective. I was going more for something like Ariel HT5 combines with the Interceptor tank...
Today I tried a little with a thinner rear and it made me wonder. I really need to put some thoughts in this before I gon on.
Andreas


grumbern

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Reply #109 on: May 04, 2020, 07:10:18 pm
The following version is now what I think of is best (top has yet to be trimmed to fit):










Also I did a quick and therefor not very accurate test. I think its noticable, what it is supposed to (or might) become. What do you think?





Obviously it gets better in the lower right corner and I would have to practice quite a bit before applying it to the tank. ::)
If I should do it and which Logo and size, shall be thoroughly evaluated ;)
So long,
Andreas
« Last Edit: May 04, 2020, 07:14:05 pm by grumbern »


Stanley

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Reply #110 on: May 05, 2020, 06:36:24 pm
I really enjoy watching your progress with this current masterpiece, especially the hand-wrought bodywork.
The bike's colors and textures add to an artistic showpiece that also begs to be ridden.


grumbern

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Reply #111 on: May 19, 2020, 09:51:03 pm
Thanks, Stanley!

I made some progress again.
First I improved a bit on the lettering. Here's what I started with:




The tools used:




Doing the outlines:






Adding some texture:




Now it might once look like this:





Allso made some welding clamps. Much more convenient than tape:





Then I made a layout for the script:






All the letters cut out twice and sprayed with glue:




Stuck on the tank:




A thin layer of paint:



And the stencils removed:






Now I started the hammering. First panel is half way done:




Just some more hours...
Andreas
« Last Edit: May 19, 2020, 09:54:31 pm by grumbern »


grumbern

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Reply #112 on: May 22, 2020, 09:35:13 pm
Since yesterday the panel is hammered completely and today I poured in molten tar as support for the chasing:








Pretty messy and time consuming, until all was molten. But this provides me with a heavy, plane support that allso sticks well to the panel, making it easy to work on without the danger of deformation and having to hold it down by hand. 8)
So long,
Andreas


grumbern

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Reply #113 on: May 23, 2020, 12:31:46 pm
Worked a little on the script. What is seen here took me about 2 hours  ::)









So long,
Andreas


Adrian II

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Reply #114 on: May 23, 2020, 02:15:04 pm
Incredible work, how thick is that ally sheet?

A.
Grumpy Brit still seeking 500 AVL Bullet perfection! Will let you know if I get anywhere near...


grumbern

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Reply #115 on: May 23, 2020, 10:14:06 pm
Hi Adrian,
it's 1.5mm. It will be thinner in these areas for sure, but since it's just dent in, I think the change will not be too much.
Andreas


ace.cafe

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Reply #116 on: May 24, 2020, 12:14:07 am
Ace Cafe was offering bronze big-end bushes for his Fireball Bullets a few years ago, and John Hutchings of Tollgate Classics in the UK was hoping to offer leaded bronze bushes if he could buy the material in reasonable quantities, so there is a good precedent for this material.

One advantage is that if the bronze bush DID fail it would not spray sharp little pieces of steel roller all over the inside of the engine.

A.
Our Ace bronze bush retains the floating design of the original floating bush, but with different clearances to account for different materials and their thermal expansion characteristics. And we used a steel con rod.
Home of the Fireball 535 !


grumbern

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Reply #117 on: May 25, 2020, 07:19:55 pm
Moved out to the balcony, as the weather was too nice to stay inside 8)

I allso used the opportunity to digitize some of my records during. Time was enough for "Ace of Spades", "March or die" and A side of the "Bomber"-EP ;D





grumbern

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Reply #118 on: May 27, 2020, 09:43:53 pm
Today I finished the script and peeled the panel off the tar. Still needs a bit refining, but before this a thorough celaning.

But first I scraped off the burrs:




And that's how it looks like now:




So long,
Andreas


uhu

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Reply #119 on: May 29, 2020, 04:51:59 pm
incredible craftmanship. Great to follow this build. Thanks for sharing.