ok rc brains I need help I have a Mds 1.08 I wanna replace
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ok rc brains I need help I have a Mds 1.08 I wanna replace
ok rc brains I need help I have a Mds 1.08 2 stroke I wanna replace I bought a used plane with a ok running old mds 1.08 it runs but it's seen its better days on the power end.
I wanna replace it but I don't wanna disturb the cowl does anyone know of a direct fit for this engine?
I wanna replace it but I don't wanna disturb the cowl does anyone know of a direct fit for this engine?
#2
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If you can find one the OS 1.08 is a superb runner and I still operate two of them. I have no clue if they are a direct drop in for the MDS or not, matching holes etc. That information will likely be difficult to come by since so few of them were ever actually used.
When you are asking engine suggestions for a particular airframe, you think it might be a good idea to describe what that airframe might be?
John
When you are asking engine suggestions for a particular airframe, you think it might be a good idea to describe what that airframe might be?
John
Last edited by JohnBuckner; 09-03-2015 at 06:28 AM.
#5
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Ok cool, I like that particular airplane and its one I believe to be a very honest one with no hidden problems. I have done the maidens on several for the fellows. The box recommendation was a two stroke ninety and I believe just about the ideal optimum would indeed be the OS 1.08. Now if you really need a four stroke that fine but I will defer to others on the choice just beware of excessive jumps in displacement as weight will surely become a problem.
Yes I do prefer two strokes on a lot of airplanes including this one. Now since the OS 1.08 is long out of production another option would be another out of production engine and that is the Magnum 1.08 Yes this one was a direct copy and I can say from personal experience with one that it to runs every bit as good as the OS version and power about the same. Both of these engines are likely to be found in your local club by older modelers and avalible on the cheap or for barter.
John
Yes I do prefer two strokes on a lot of airplanes including this one. Now since the OS 1.08 is long out of production another option would be another out of production engine and that is the Magnum 1.08 Yes this one was a direct copy and I can say from personal experience with one that it to runs every bit as good as the OS version and power about the same. Both of these engines are likely to be found in your local club by older modelers and avalible on the cheap or for barter.
John
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Thanks john yes I have a 2 stroke in there just maybe seen its better power days runs great just seems a little low on power.
I will be on the lookout in the mean time for a os 1.08 or the magnum. It still flys good just think it could be better. And yes it does fly really nice.
I will be on the lookout in the mean time for a os 1.08 or the magnum. It still flys good just think it could be better. And yes it does fly really nice.
#7
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There is a long running thread on the CG Extra 300 if you use the search engine in KIT BUILDING. There are tons of us still flying the plane and still building it. Every brand and type engine is being used. I only knew one person using the MDS and that was a very long time ago. If the old MDS is pooping out on you check and see if it has the shim under the head or not. If it does then just remove the shim to bump up the compression. These are/were low or no nitro engines and the shim was needed to lower the compression when nitro was used. The OS 1.08 is a much better engine though and I still run into them all the time at swap meets and our local hobby shop that has used items. I of course run an old style YS 1.20 in my CG Extra. I think Karol in Jamaica is running the Zinoah G-20. The glass cowl can be bought new at Fiberglass Specialties.
#8
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I just ran across HobbyKing's site a few minutes ago.... they have an ASP 1.08 for $99. The older ASP's were very nice for the money... I have several.. they still run fine...
I don't have any new generation ASP's... but for $99 I'd take a gamble on it.... and they actually look to be in stock... imagine that. Good luck with it.
http://www.hobbyking.com/hobbyking/s...ow_Engine.html
I don't have any new generation ASP's... but for $99 I'd take a gamble on it.... and they actually look to be in stock... imagine that. Good luck with it.
http://www.hobbyking.com/hobbyking/s...ow_Engine.html
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Odd thought. I was a MDS fan and other than the carb on an early 148 never had any problems. But I just don't remember ever seeing a 108. I thought the range went from 78 to 148 with no intermediate engines.
Are you sure you have a MDS 108?
The 148 is a great engine but it does not like high nitro fuels. I ran mine on 5%. They also take a fair bit of running in.
Are you sure you have a MDS 108?
The 148 is a great engine but it does not like high nitro fuels. I ran mine on 5%. They also take a fair bit of running in.
#10
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Odd thought. I was a MDS fan and other than the carb on an early 148 never had any problems. But I just don't remember ever seeing a 108. I thought the range went from 78 to 148 with no intermediate engines.
Are you sure you have a MDS 108?
The 148 is a great engine but it does not like high nitro fuels. I ran mine on 5%. They also take a fair bit of running in.
Are you sure you have a MDS 108?
The 148 is a great engine but it does not like high nitro fuels. I ran mine on 5%. They also take a fair bit of running in.