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Hit & Miss Gas Engine Discussion Meet collectors of hit and miss engines, ask questions about collecting, restoring and showing antique flywheel engines.

Hit & Miss Gas Engine Discussion

Detailed Restoration of 3 1/2 HP Tank Cooled GSM


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  #21  
Old 09-30-2009, 09:04:42 AM
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Owen Bosma Owen Bosma is offline
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Wayne ................ there no pot mufflers shown in the 1912 parts booklet, it does show how the muffler was constructed. On your engine the exhaust was discharged in the top part of the cooling thank and caused a draft in the tank aiding in cooling the water, which trickled down a set of trays inside the thank. The exhaust manifold on the engine is simply made up out of plumbing pipe.
The cooling thank was pat. in April of 1904, before that a thermo syphon system was used with different types of thanks. Attached are a couple of pictures showing the cooling systems and mufflers. The first picture shows the cooling thank over the cylinder, this was dun to save space. If interested in building a thank I can give you the measurement and a cutaway drawing of the inside of the tank.

...... Owen
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  #22  
Old 09-30-2009, 11:20:53 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Brian - Thanks, a photo would be great.

Owen - The scans of the original book help a lot with a good visual description of the exhaust. I will probably use a small cooling tank located at skid level.
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  #23  
Old 09-30-2009, 11:36:43 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

For those of you following this thread. I have been unable to locate a matched set of oilers for the main bearings and con rod. I am looking for three of the same pattern all the same size OR 2 the same ( for the mains) and one larger or smaller ( for the rod)

I do have a proper rod oiler with blow-by tube and check ball in good condition.

They are made by Penberthy and must have a pattern that look like the ones shown in this photo

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  #24  
Old 09-30-2009, 12:42:16 PM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Click on the following link to go to part 2 of this story


http://www.smokstak.com/forum/showth...270#post450270










.
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  #25  
Old 09-30-2009, 07:26:23 PM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Wayne ........... your engine probably came with a crank guard and the oiler arrangement is a little different, see the attachment. The main bearing oilers used about a 3" extension.

........ Owen
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  #26  
Old 10-01-2009, 08:16:25 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Owen - Thanks. My understanding is the oiler extension was just an attachment that threaded on to the bottom of the oiler? I believe it looked like this:



I think I saw a box of these at Home Depot last weekend !

Was there any reasoning for the use of either a Christmas Tree or the crank guard?
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  #27  
Old 10-01-2009, 08:36:05 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Yes that is an original
.... Owen
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  #28  
Old 10-01-2009, 09:45:24 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Hello Wayne amazing to see what some people can do,i too will need a rocker bracket for a 3 1/2hp i have.This is one of the best posts i've seen on this web site.The pictures help alot.Cant wait untill yours is done.Let me know if i can buy a rocker bracket casting from you.Keep up the good work.
thanks
Ed
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  #29  
Old 10-01-2009, 10:00:38 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Here are some pics of the two 3 1/2hp GS&M i have.
thanks
Ed
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  #30  
Old 10-01-2009, 10:14:21 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Edwin, Absolutely you can get a rocker bracket casting from me. And that goes for the ignitor body casting as well.

I will only be machining one ignitor and 1 rocker bracket but if any collector need either of these in the raw casting form, I will gladly sell them at my cost plus shipping. Just Let me know before October 21st as that is when they go to the foundry.


Also I have not gotten there yet with this discussion but I will be casting a replacement flywheel to replace the broken one and will be sending mine to the foundry for a copy at the same time. If anyone needs one of these let me know soon. Only stipulation is that it must be picked up at my location. Preparation of the existing flywheel for a pattern will be posted within the next week.
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  #31  
Old 10-01-2009, 10:29:29 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Thanks Wayne i would be interested in an ignitor casting or two if possible.If you want you can email me and i will give you my shipping address,OK.I think i know someone who needs flywheels.
thanks
Ed
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  #32  
Old 10-01-2009, 09:15:54 PM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Wayne,
Here's a couple shots of our GSM muffler. We think it's off a 12 hp.

Jonathan
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  #33  
Old 10-02-2009, 06:07:50 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Thank you to the many that have contacted me regarding my quest for oilers.
My problem is solved. I was contacted by a very nice East Coast collector that just happened to have a original complete set of four - including the rod oiler, cylinder oiler and crank bearing "stand - offs". Thank you !

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  #34  
Old 10-02-2009, 08:11:03 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

g'day wayne
this is an excellent series and i look foward to every new post as i myself have a 3.5 h.p gsm but mine is hopper cooled. mine has had a fair bit of work done being that it was already been sleeved and had a new ignitor made as well but what my engine is missing is the only part i need to finish it which is the cast ignitor trip lever arm that works off the cam gear, and pivots off the cam gear bracket, does your engine have this or do you have to make one as well? if you have to cast one i would be interested in a casting myself to finish my engine. if you could help it would be greatly appreciated.
cheers
mick
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  #35  
Old 10-02-2009, 08:47:25 PM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Hi Wayne,

Great thread, thanks for sharing.

In post #4, when removing studs, I have had the most success by where possible using two wrenches with handles 180 deg apart. Works well on water fittings and exhaust pipes as well. Of course when they break refer back to post #4.

Regards,
Wayne

www.bluefuel-whitesmoke.com
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  #36  
Old 10-03-2009, 06:43:49 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Mick -Thanks, Yes my engine does have this part. It will need some rework but it is there.

Wayne - Thank for your method on removing stuck fittings / studs. That is whats good about this forum. Lots of information exchange.
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  #37  
Old 10-03-2009, 10:46:19 PM
Nathan K. Nathan K. is offline
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Hi Wayne,
Have you tried prospecting?, finding that set of oilers has got to be like finding a gold mine. Are they from a 3 1/2HP?, mine has the bottom of the cyl. oiler which is marked 554 on the hex(no.3 size). Nathan.
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  #38  
Old 10-04-2009, 07:00:59 AM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Nathan, Yea, I was kind of amazed myself, that a complete set of these existed somewhere and not on it appropriate engine .
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  #39  
Old 10-08-2009, 08:35:13 PM
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Default Re: Detailed Restoration of 3 1/2 HP Tank Cooled GSM

Wayne,
Thanks for the detailed description. In straightening the crankshaft, are you using wood blocks to prevent marking the crankshaft? I'm sure it must be all trial and error.
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