BSA Crank Oil Feed
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- Опубліковано 4 лип 2020
- An update on the BSA bush to bearing conversion, just to keep you all in the loop.
There are a lot of hours behind what is now less than 20 minutes of video, I did think of showing more, but you definitely would have dozed off ;-) - Наука та технологія
You had me going for a second or two when you said "scan". I knew would do it the proper way using pure skill and imagination 👍
I really need to get back onto this project..
My goodness that brought back some memories of sand casting in metalwork at school, guess they don't do it today cos of health and safety, how did we ever survive - casting, machine shop, open hearth forging - great to see - seem to remember our sand was mixed with heavy oil - pretty unpleasant stuff and unique fragrance when casting - great work Ade
Many thanks for sharing your memories and taking the time to comment Chris.
Only people who don't have fails are the ones that don't try. Keep going.
Thanks for the comments, hopefully I can get back in the workshop in the future.
Well, that was certainly interesting to watch. UA-cam channels make casting look so easy. I never really thought it was as easy as they portray. Nice to see a real guy working his way through the issues of doing it. When I seen that Honda cover and you explaining how you were going to machine it. I thought for a moment, Ade might be attempting a "bridge too far" this time. lols Thanks again for the video.
Seemed like a good tease with the honda timing cover next to the bsa one, couldn't resist! I know I've drifted a bit with the bsa project but casting was on my list of things to try, so I threw it in there. Thanks for watching and commenting
Great end to the weekend Ade, I enjoyed watching. I've never tried casting so it's interesting to see you work through the snags. It's a really good solution to the end oil feed, should be a very tidy job when it's done. Have a great week. Dean in Oxfordshire.
It's something different for me to try, I'll master it. Probably drifting from the original project a bit 🤔
One of the best clips I’ve seen, love the cnc sledgehammer! Fascinating to watch the progress of the part. Lots of different techniques and processes demonstrated.
I got a sucessful cast the other day, I'm just going to try and make some more, update soon!
If at first you don't succeed.......and every fail is another learning experience and a furthet step towards success.
I think that the concensus is wet sand, the bucket is in the shed drying out a bit. How are you doing Chris? No model shows or jumbles to go to is frustrating.
@@AGEngineering yup getting withdrawal symptoms, even SMEE is closed for the duration but then we are all old foggies in the at risk category.
Impressive, both in determination & ability.
Thanks, I'll master it, being able to cast things will open up a whole new area of possibilities
Well done 👍
Keep going you will get there. Just a case of perfecting your technique, I would think. Kudos for having ago
I have wanted to try casting for a while now, chance to have a go with this job. Thanks for watching, Ade
I would tend to agree with your assumption about to much moisture in the sand it certainly looks like steam, especially on the bottom. With the basic shape you're casting, you could direct pour in to an open mould. That is no feeder or riser. Alloy wheels would be a cleaner source of scrap as old engine components tend to be contaminated with oil. There's a number of vids on UA-cam on how to make green sand, what are you using for the clay content in the mix? Keep going, you'll get there.
Thanks for the thoughts, I had considered an open mould, may well try that anyway.
@@AGEngineering I've never tried or heard of anyone doing this but in theory you could use the casing as the mould. You would need a release agent. A good coating with Dry molly spray is good for that. You'd them need to cool the casing. Here, you could pack it in to your damp sand so it acts as a heat sink. As I say I have not done this but I have done plenty of ally casting in to open and closed steel and sand moulds. The ally should shrink as it cools and fall out. If you do have a go, don't suggest you try on scrap casings first.
The sand is Bromsgrove greensand and bentonite clay from Artisan foundry, cost a bl***y fortune for a bag of sand!
Extremely interesting. I was wondering how you would do the oil feed block. I envisaged machining it from solid. I know nothing about casting but it would seem like something is gassing off. Huge amounts of bubbles when you pour the molten aluminium in. Intuitively steam would be the most likely culprit, as you said. Generated from the moisture in the sand. Casting seems like a huge amount of work for very little reward!
Thanks Carl, I'll get there with it. I wanted to try casting anyway, so the reward is gaining a new skill, this just happens to be a project I can use it on. Cheers for your thoughts, Ade
@@AGEngineering You are welcome. I was spoiled this Sunday with John Mills, Jon's Workshop and then you! Great to see your progress. And you are right of course. Gaining a new skill is the best reward.
I've just put a photo on the community page
Ade, are you casting the ally too hot I wonder? Casting temps are quite vital. Also try degassing?
I must check the temperature actually, good thought. I'm using nitral c3 for degassing from Artisan foundry. Thanks for watching, Ade.
Correct with the moisture, are you degassing? It isn't just steam creation but cooling of the charge plus this isn't an intricate casting and the sand could be on the dry side with no collapse issues, also surface finish isn't paramount.
Thanks for watching through the older videos. I'm looking at other methods as well including petrobond and trying lost foam, but that's a while down the road.
@@AGEngineering no need for petrobond, though that is good, the moisture content in greensand is quite critical, if it holds together with a squeeze and leaves palm prints it's wet enough.
It actually bakes when you pore if you get it right.
Good try Ade like watching your videos can I offer some help I’m a retired patternmaker and we used wood patterns and then cast our ali patterns off the wood master pattern. You are correct your green sand is too wet our method to check was to get a hand full of your prepared sand and squeeze it together if the sand sticks to your hand it’s to wet. Can I suggest you use a feeder with the ingate cut into your mould cavity and connect the feeder with a runner bar to downhole.Ideally your runnerbar wants to be larger than than your ingate and your downhole larger than your runnerbar. When you cast try to get keep your downhole full . I presume you are going to machine the top face so you can just vent straight off the mould cavity. By the way Ade how can we get in touch I’ve got an old beemer needs brake hubs machining
Excellent info thank you Derek. My email is adegwilliam@gmail.com.
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I thought that I set myself difficult projects but this is getting out of hand Ade.
I'll have to put some photos up of the conversion I worked on a few months ago, that has a cast aluminium block soldered into the timing cover. I had wanted to have a go at casting for a while, I've had the furnace for over a year, so this seems a good opportunity to use it, we'll get there! Cheers for watching 👍
How about cutting it out of layers of say maybe five 1/4 aluminium plates and screwing together,? Maybe easier to construct with the oil passages in each layer.
I did consider a fabricated version, but I have very little space to work in. Thanks for your thoughts, Ade
Youp sand's too wet, your sprue is too big. You might like to have a look at "Olfoundryman" on youtube. Cheers, Matthew
Cheers for the info, thanks for watching
Just spent a couple of hours watching olfoundryman, very useful
@@AGEngineering He's a very generous helpful person who has taken the time to help me with a difficult casting that I'm working on. His videos as you can see are excellent!