Archive for The Unofficial Mamod and Other Steam Forum The Original Toy Steam Forum Established 2006 The biggest, most popular global steam forum around! Accept NO imitations! We have a growing community of regular posting members who chat about all aspects of toy and model steam.          The Unofficial Mamod and Other Steam Forum Forum Index -> General discussion James Girth Mamod Having just been given a lathe/milling machine, I am going to seriously build a scaled up Mamod. Questions are: 1) What model should I do? (not too hard for my first, maybe SE3?) 2)Mike, would you be able to make me a big decal for it? MooseMan Re: Girth Mamod James wrote: Having just been given a lathe/milling machine, I am going to seriously build a scaled up Mamod. Questions are: 1) What model should I do? (not too hard for my first, maybe SE3?) 2)Mike, would you be able to make me a big decal for it? How about an SE4 oldstuff You're gonna have fun, mate! steamyjim is that like the 1/3rd sized mamod sr1 that someone i knows built he takes it round the rallys behind a 4inch scale foster James Aye. I could probably do the SE4 if I had all of the measurements and that. James What model would you do? steamyjim probally a twin cylinder MM2 or a wilesco D32 James No! Not a bloody D32! I need one that I have got really I guess oldstuff Cut your teeth on a simpler project...minimizes the frustration factor! James I thought about doing a big SE3. What do you think? Only problem would be the boiler fittings SPOKESMAN You need to learn how to use the machines first!! James I need to unseize it first oldstuff James wrote: I thought about doing a big SE3. What do you think? Only problem would be the boiler fittings Would be VERY COOL. You can make fittings, safety valves, bushes. Right now there's a guy on ebay selling steam valves with handles and bushes for making whistles, etc. Might not ship to UK, though... http://cgi.ebay.com/ws/eBayISAPI....em=280083056386&rd=1&rd=1 Titan It has to be said... 5 inch gauge SL1 !!! Exactly 4 x full size! Might be more of a challenge than you are looking for mind! steamyjim can i ask why not a wilesco D32 dare you disrespect the D32 Mamodman123 Titans idea gets my vote! Would be a lot simpler than an SE3 or SE4 anyway! James Ahh SJ, this reminds me of MSN where all you say is D32 this and D32 that I would build a girth loco, but then it would need girth track and girth rolling stock Mamodman123 James wrote: Ahh SJ, this reminds me of MSN where all you say is D32 this and D32 that I would build a girth loco, but then it would need girth track and girth rolling stock umm maybe a simple MM1 then? James Or SE3? Mamodman123 James wrote: Or SE3? Aye! Seems simple enough, the pressed base might be difficult though, might be worth having a go at the pre-war one? James Aye, but the SE3 is so cool! I could get a net for a raised base (as the SE3 corners on the base ain't joined are they?) and then press the sides down Mamodman123 James wrote: Aye, but the SE3 is so cool! I could get a net for a raised base (as the SE3 corners on the base ain't joined are they?) and then press the sides down Only one isn't Jimbo James On mine none are joined! Mamodman123 James wrote: On mine none are joined! Yes sorry i was thinking of the SP4 James I will ask the old man when he gets home. I would be trying to get it done in time for next STIA Mamodman123 James wrote: I will ask the old man when he gets home. I would be trying to get it done in time for next STIA It will be plain sailing once you have the cylinders and flywheel done Boiler will be the easiest part James It's the whistle, safety valve, and throttle that is worrying me. Life is no fun without challenges though! Would truely be a show stopper Mamodman123 James wrote: It's the whistle, safety valve, and throttle that is worrying me. Life is no fun without challenges though! Would truely be a show stopper they'll be one of the easiest parts! The whistle is made in 2 pieces then soldered together! James Ahh! that's ok then! Just a big thing to take on, but will be very rewarding! bessytractor I did seriously consider building a big SL1. I wrote the idea off because I wasn't sure a 5" loco would work too well with a pot boiler!! I decided to knuckle down to Todd the coffee pot instead! James Well my old man said he is getting me some sheet steel home tomorrow, and I can start doing the base then James Anyone fancy an SE3 with a base 66cm x 75cm? 9cm long cylinders, and 48cm long boiler? James 51cm meths burner (with handle) Griffin James wrote: Well my old man said he is getting me some sheet steel home tomorrow, and I can start doing the base then Drilling all those holes will keep you busy James Aye Roly Williams Mamodman123 wrote: James wrote: I will ask the old man when he gets home. I would be trying to get it done in time for next STIA It will be plain sailing once you have the cylinders and flywheel done Boiler will be the easiest part The boiler won't be as simple as it sounds. One that big will have to be certified. It might be best to find a ready made boiler and design the rest around that. It's a great idea, though. I would suggest something simple but impressive - like an old style SE1/2 with a flatbed base and exhaust throttle. A cast engine frame might be a bit of a problem though. A loco might be a bit abitious but track would be no problem if you made it 3 1/2" (the same as the Hornby Rocket). James Doubt it would need a certificate mate Mamodman123 Roly Williams wrote: Mamodman123 wrote: James wrote: I will ask the old man when he gets home. I would be trying to get it done in time for next STIA It will be plain sailing once you have the cylinders and flywheel done Boiler will be the easiest part The boiler won't be as simple as it sounds. One that big will have to be certified. It might be best to find a ready made boiler and design the rest around that. It's a great idea, though. I would suggest something simple but impressive - like an old style SE1/2 with a flatbed base and exhaust throttle. A cast engine frame might be a bit of a problem though. A loco might be a bit abitious but track would be no problem if you made it 3 1/2" (the same as the Hornby Rocket). If it's made to a good standard I don't see why it wouldn't pass the test. Basically the boiler will be easier to make than the pressed items, i.e the supports, which will be very difficult. The boiler is just a brass tube with two end caps soldered on. Relativly easy compared to the rest of the SE3 parts You wouldn't find a large boiler that looks like an SE3 one either oldstuff James wrote: Doubt it would need a certificate mate Not for home use, maybe. But keep in mind you'll be dealing with substantially higher boiler pressures in order to push those big pistons. James Steamyjim said if it has a boiler capacity under 2litres it doesn't need one. Will just have to work to that figure and maybe do a boiler inside a boiler so it is under 2 litres but still the same size oldstuff James wrote: Steamyjim said if it has a boiler capacity under 2litres it doesn't need one. Will just have to work to that figure and maybe do a boiler inside a boiler so it is under 2 litres but still the same size 2 liters? That's huge! You'll be pulling trucks out of the mud with that engine! Mamodman123 oldstuff wrote: James wrote: Doubt it would need a certificate mate Not for home use, maybe. But keep in mind you'll be dealing with substantially higher boiler pressures in order to push those big pistons. Definatly not for home use, All depends on the operating pressure James Set the safety valve Mamodman123 James wrote: Set the safety valve Yes! Don't let it put you off James! don't be scared out of something you want to do! James Hmm. It would pass the test I'm sure. I might even be able to turn the whistle into a secondary safety valve Roly Williams James wrote: Steamyjim said if it has a boiler capacity under 2litres it doesn't need one. Will just have to work to that figure and maybe do a boiler inside a boiler so it is under 2 litres but still the same size Good idea. Like the Rocket boiler: it's only about half the size it looks. Mamodman123 James wrote: Hmm. It would pass the test I'm sure. I might even be able to turn the whistle into a secondary safety valve Possibly, but if it's working on the same prinicple of a Mamod, the cylinders will effectivly act as a safety valve when pushed away from the engine block James Aye, should be exactly the same Chris Don't forget to add a dynamo so you can power your house with the thing! I'm going to take out some shares in the meths companies, the share price will rocket once you get around to powering it. Mamodman123 Chris wrote: Don't forget to add a dynamo so you can power your house with the thing! I'm going to take out some shares in the meths companies, the share price will rocket once you get around to powering it. That's true James Will take about 1 or 2 bottles per steaming Unless you have to use gas? Chris That will then only work until the Russians turn off our gas supply! James When I have built this one, I MAY build another for sale TE1A_man James wrote: What model would you do? I would do the bus Or the TE1A. SPOKESMAN Its going to be a rather big job James. James Aye Mike I know, but would be bloody cool finished! It is certainly going to happen, as even if this lathe we got don't work, he is going to do it at work sparky you could start on something simular to what i first made with my dads help when i was younger, a little verticle steam engine, it was brilliant and they are so much fun or our you wanting something a bit more techniqal James Naa, buildng this first sparky fare enough mate James Would be awsome though wouldn't it? Imagine that at STIA oldstuff sparky wrote: you could start on something simular to what i first made with my dads help when i was younger, a little verticle steam engine, it was brilliant and they are so much fun or our you wanting something a bit more techniqal Sparks...you still have it? Would be cool to see it. James Right guys. Been having a think about this one with dad. The boiler tube would cost around £50 on it's own. Meths might not have enough heat to work it, and I couldn't cast the flywheel. The other 2 I can sort I think, but I have a plee. Does anyone have/know anyone who has the facilities to cast me a SE3 flywheel, but 2 or 3 times the size? Any help will be greatly appreciated, as I think alot of people would actually like to see this one running. James If I can't, I will just have to scrap the idea and go for a home made engine to my own design. But I don't want to do that Mamodman123 James wrote: If I can't, I will just have to scrap the idea and go for a home made engine to my own design. But I don't want to do that Will be difficult James..... I can't see how you will cast it. Maybe ask the bloke with the big roller how he made it? that's if you can contact him somehow? James No idea who he is. http://pic6.piczo.com/newellsmamods/?g=20206989&cr=6 Mamodman123 James wrote: No idea who he is. http://pic6.piczo.com/newellsmamods/?g=20206989&cr=6 Looks like aluminium? bessytractor my school has a foundry but I'm not sure I could adequetly cast spokes! James Could you ask mate? Roly Williams James wrote: Right guys. Been having a think about this one with dad. The boiler tube would cost around £50 on it's own. Meths might not have enough heat to work it, and I couldn't cast the flywheel. The other 2 I can sort I think, but I have a plee. Does anyone have/know anyone who has the facilities to cast me a SE3 flywheel, but 2 or 3 times the size? Any help will be greatly appreciated, as I think alot of people would actually like to see this one running. Does your school have the means to cast it? Mine did. You'd have to make a patern out of wood then cast it in sand. James Not sure, they have a sand pit for casting, but probably wouldn't let me anywhere near it Roly Williams James wrote: No idea who he is. http://pic6.piczo.com/newellsmamods/?g=20206989&cr=6 Here's his email address: newellsmamods@hotmail.co.uk [/url] Mamodman123 Roly Williams wrote: James wrote: No idea who he is. http://pic6.piczo.com/newellsmamods/?g=20206989&cr=6 Here's his email address: newellsmamods@hotmail.co.uk [/url] Hmmm he definately didn't make that big mamod! Thats for sure! James Nope, not his mate. He filmed it at a rally Roly Williams James wrote: Not sure, they have a sand pit for casting, but probably wouldn't let me anywhere near it There might be somebody who would do it for you if you made the patern. James Aye, but you have to get the pattern perfect and all that. No idea how I can do it James Got it. Going to make a small engine first I think, to see if all my ideas work, so I ain't jumping in on this SE3 and wasting my money. The idea for the flywheel is to get a solid lump of aluminium, turn it, make it into a circle, drill holes as big as you can get in the different parts, then file down into the shape I need. I should have the SE3 done before STIA 2008. Dad said if we hit a brick wall we will just find another way around it, so one way or another, it will be done! Mamodman123 James wrote: Got it. Going to make a small engine first I think, to see if all my ideas work, so I ain't jumping in on this SE3 and wasting my money. The idea for the flywheel is to get a solid lump of aluminium, turn it, make it into a circle, drill holes as big as you can get in the different parts, then file down into the shape I need. I should have the SE3 done before STIA 2008. Dad said if we hit a brick wall we will just find another way around it, so one way or another, it will be done! What engine is on the list Jimbo? James Just something homemade to my own design. The tube one this SE3 alone is costing me £50+ Mamodman123 James wrote: Just something homemade to my own design. The tube one this SE3 alone is costing me £50+ It will do! Metal isn't cheap! James Anyway mate, back to school tomorrow I'm off now, night MM James Aye. The good thing is I can get the base for free And the firebox, and the engine frames Mamodman123 James wrote: Aye. The good thing is I can get the base for free And the firebox, and the engine frames Good good! SPOKESMAN How big is this SE3 going to be? Wallace So you are making a girth SE3 James? Going to be hard with the flywheel, I agree. If you want a exact replica especially, otherwise I was thinking of a early model SR back wheel as a flywheel. Otherwise, you need to look for someone who does what is called "Billet" Billet wheels on cars are a one piece thing, made from a solid block of alloy, which they machine and stuff. Might cost a fair bit though. I know they can use high pressure water to do cut outs James If I do it the size I intend, the base will be: 72cm by 66cm. Boiler: 48cm by 15cm. Mamodman123 James wrote: If I do it the size I intend, the base will be: 72cm by 66cm. Boiler: 48cm by 15cm. Is it twice the size then? James 3 times. The normal x 2 so is that twice or 3 times? Mamodman123 James wrote: 3 times. The normal x 2 so is that twice or 3 times? Yes! It'll be bloody big either way James 3 times. Told thee, girth Mamodman123 James wrote: 3 times. Told thee, girth Aye James Imagine what people would be like at STIA Mamodman123 James wrote: Imagine what people would be like at STIA We definately won't be fitting any more peopleon that table then James Probably won't. Seriously, it is going to be ready for next Feb hopefully, and there isn't going to be much room Mamodman123 James wrote: Probably won't. Seriously, it is going to be ready for next Feb hopefully, and there isn't going to be much room there wasn't anyway SPOKESMAN get 8 tables! Mamodman123 SPOKESMAN wrote: get 8 tables! No room for them Mike James Might put this SE3 in a trailer Roly Williams Hook up a generator to it and you should be able to power one of the electric Jensens from it mj James wrote: If I do it the size I intend, the base will be: 72cm by 66cm. Boiler: 48cm by 15cm. With a boiler that size (2.26 lts) you'll need a certificate. It's a controlled device at that volume, especially for public exhibitons. I would speak to a specialist model boiler maker about the design & construction. There's a bit more to it than just making it bigger, a pressurised vessel of this size is a very very dangerous thing. James Aye I know it is, but danger=fun as danger=steam engines        The Unofficial Mamod and Other Steam Forum Forum Index -> General discussion Page 1, 2  Next Page 1 of 2