LOLA T70 scratch build...
- Thread starter marcus
- Start date
Watch those things, mine tried to kill me !
Phew...thanks for telling me. You had them replaced by the same type?
Zeegates
Looking good Marcus.
Dave
Looking good Marcus.
Dave
Not much work on the chassis recently...BUT in the meantime the injection system has arrived.
A BBC Kinsler/Lucas injection with Cosworth mechanical fuel pump. All I´m still needing to complete the injection set up is the Lucas unit setting the system under presssure for starting.
Hope the engine - once complete -will kick me the real deal one day...
A BBC Kinsler/Lucas injection with Cosworth mechanical fuel pump. All I´m still needing to complete the injection set up is the Lucas unit setting the system under presssure for starting.
Hope the engine - once complete -will kick me the real deal one day...
Attachments
An Update:
Now with all the chassis panels being fabricated, it´s time to get to a really "hot" issue:
Panel bending.
Before bending the bigger panels (inner sidepods and doublers) with their correct bending sequence and the right direction (90 deg. to direction of rolling) we fabricated some 2024 T3 probes, 1,5 millimeters thick, for testing beforehand. What a pain in the a..
By using a hydraulic sheet metal bending machine we made several attempts using a torch, sheet inlays, bending speeds and angles in order to find the right approach towards bending that stuff. So some time and an impressive number of cracked probes later we think we found a passable way for avoiding cracks along the bend line:
Given that you have to bend the above panels to an angle of 90 deg. and the bending radius can be at least 3 times that of the panel´s thickness, a good way of avoiding stress on the material is to bend in two steps of 45 deg. each along slightly displaced bend lines. For example if you have to bend 90 deg. we had very good results by bending 1mm to the one side of the bend line to 45 deg. and bending another 45 deg. 1 mm to the other side of the bend line which totals to 90 deg. By adopting that, we didn´t even have to heat up the panels along the bend line which is very difficult doing it evenly, anyway. Sounds very simple and is perhaps an old trick, but at least it seems to work fine.
Any other opinions, ideas?
Best,
Marcus
Now with all the chassis panels being fabricated, it´s time to get to a really "hot" issue:
Panel bending.
Before bending the bigger panels (inner sidepods and doublers) with their correct bending sequence and the right direction (90 deg. to direction of rolling) we fabricated some 2024 T3 probes, 1,5 millimeters thick, for testing beforehand. What a pain in the a..
By using a hydraulic sheet metal bending machine we made several attempts using a torch, sheet inlays, bending speeds and angles in order to find the right approach towards bending that stuff. So some time and an impressive number of cracked probes later we think we found a passable way for avoiding cracks along the bend line:
Given that you have to bend the above panels to an angle of 90 deg. and the bending radius can be at least 3 times that of the panel´s thickness, a good way of avoiding stress on the material is to bend in two steps of 45 deg. each along slightly displaced bend lines. For example if you have to bend 90 deg. we had very good results by bending 1mm to the one side of the bend line to 45 deg. and bending another 45 deg. 1 mm to the other side of the bend line which totals to 90 deg. By adopting that, we didn´t even have to heat up the panels along the bend line which is very difficult doing it evenly, anyway. Sounds very simple and is perhaps an old trick, but at least it seems to work fine.
Any other opinions, ideas?
Best,
Marcus
Hi Marcus,
This link may help, specifically page 4-13, Par. 4-55;
http://rgl.faa.gov/REGULATORY_AND_GUIDANCE_LIBRARY/RGADVISORYCIRCULAR.NSF/0/99c827db9baac81b86256b4500596c4e/$FILE/Chapter%2004.pdf
Regards,
Scott
This link may help, specifically page 4-13, Par. 4-55;
http://rgl.faa.gov/REGULATORY_AND_GUIDANCE_LIBRARY/RGADVISORYCIRCULAR.NSF/0/99c827db9baac81b86256b4500596c4e/$FILE/Chapter%2004.pdf
Regards,
Scott
Along the way with the chassis build I´m trying to get all the parts which are not that easy to find. So it seems a good idea to seize the opportunity whenever something comes up. Latest is the Chevy-Hewland LG cast adaptor:
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))Very slow progress over the last couple of months due do work commitments and the build of a new workshop.
However, got a set of clutch and brake pedals fabricated to original spec by Hugh Absolom, Wokingham UK, of Diamond Racing fame who also organised whatever else was needed such as plating and then sending the finished pedals to Germany. They came out beautifully. You can get Hugh under +44 1189737973 or [email protected]
Needless to say they also passed my neighbour´s quality control check (see above post #79) with ease...
However, got a set of clutch and brake pedals fabricated to original spec by Hugh Absolom, Wokingham UK, of Diamond Racing fame who also organised whatever else was needed such as plating and then sending the finished pedals to Germany. They came out beautifully. You can get Hugh under +44 1189737973 or [email protected]
Needless to say they also passed my neighbour´s quality control check (see above post #79) with ease...
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That is amazing! I love the cad plate what detail. I find your work on this whole project to be tremendous and inspirational. I have dreamed of building a T-70 for years. I have always dismissed it due to money and material constraints. Your scratch build seems to have got a spark burning again. My concerns have always been the chassis and tracking down the body panels. I wanted to base mine on a ford power plant, having more experience and parts. I don't want to hijack the thread, but share my sense of awe at what you have done so far. Please, keep it up!
Walt, many thanks for your kind words.
Due to immense work at my job (60-70 hrs/week, call it hard work or ambition...I tend to call it self-exploitation) there´s only very slow progress.
However, my build table is not only finished but before setting up the jig (at last) minor riveting work on smaller panels is resuming.
Due to immense work at my job (60-70 hrs/week, call it hard work or ambition...I tend to call it self-exploitation) there´s only very slow progress.
However, my build table is not only finished but before setting up the jig (at last) minor riveting work on smaller panels is resuming.
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Nice work Susanne!
Marcus,
She reminds me of Rosie the riveter...
Google Image Result for http://www.project-insomnia.com/colleen/Rosie/rosieagedsm.jpg
Good to see more progress.
Cheers,
S
Marcus,
She reminds me of Rosie the riveter...
Google Image Result for http://www.project-insomnia.com/colleen/Rosie/rosieagedsm.jpg
Good to see more progress.
Cheers,
S
