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MDS 148 piston

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Engine Doctor10/03/2019 12:45:48
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2317 forum posts
28 photos

Hi all. Does anyone have piston for a MDS 148 in their bits box they are willing to dispose of ? or a smashed /crashed example with good piston etc they would sell . Please PM me if you can help .

Engine Doctor06/04/2019 18:00:56
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2317 forum posts
28 photos

I'm still looking for a piston for the MDS 148 .

jeff2wings06/04/2019 19:56:12
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796 forum posts
1891 photos

So what happened to the original one to need a replacement ?I did a rebuild on one recently ,got the ring from gaviscool on e-bay Btw are you still in need of a Merco crankcase ?

imga0257.jpg

Engine Doctor08/04/2019 20:20:03
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2317 forum posts
28 photos

Engine came in job lot and looked and felt ok . A quick check revealed that about 1 cm of the circumference of the piston above the ring is missing. Ring appears ok ?

Yes still looking for a cheap c/case for a 49 .

Regards

John Duncker10/04/2019 01:26:35
79 forum posts
7 photos
Posted by jeff2wings on 06/04/2019 19:56:12:

So what happened to the original one to need a replacement ?I did a rebuild on one recently ,got the ring from gaviscool on e-bay Btw are you still in need of a Merco crankcase ?

imga0257.jpg

I don't know if you will want to fly the 148. I used a 148 in a 3D model flying the snot out of it for several years. Your 148 has the early carb which is known to have a poor mid range. The carb machined from bar stock with a better mid range.

Ripmax gave me the new model carb on request. Once the engine was run in and the carb slow running needle was adjusted it was an extremely reliable engine. NB The slow running needle is very sensitive and needs to be adjusted in tiny steps.

jeff2wings14/04/2019 12:55:06
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796 forum posts
1891 photos

John,I think the issues with MDS carbs are legendary,so my one now sports an OPS slide carb with accelerator pump.

ED,sorry to say the Merco case is for a 61sad,as for the MDS if all else fails,most likely could make one fore you ?

will -007/05/2019 02:40:19
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581 forum posts
19 photos

Hi, I think there's a piston for sale EsAAOSw0VBch43B">here:

EsAAOSw0VBch43B">https://www.ebay.co.uk/itm/UNUSED-MDS-148-2-STROKE-NITRO-GLOW-RC-PLANE-ENGINE-2-STROKE/273835523845?hash=item3fc1de7f05:gEsAAOSw0VBch43B

HTH

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