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TD .049/Medallion .049 differences
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TD .049/Medallion .049 differences
SuperDave Tue Mar 13, 2012 9:42 am
Similar but in so many ways different.
The former being more highly regarded than the later.
I'd like start a discussion as to why. You first. This could be very informative for all.
The former being more highly regarded than the later.
I'd like start a discussion as to why. You first. This could be very informative for all.
Last edited by SuperDave on Tue Mar 13, 2012 11:43 am; edited 1 time in total
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Re: TD .049/Medallion .049 differences
Cribbs74 Tue Mar 13, 2012 10:14 am
SuperDave wrote:Similar but in so many ways different.
The former being more highly regarded than the later.
I'm like start a discussion as to why. You first. This could be very informative for all.
Dave,
I prefer the TD over the Medallion for one reason only....... aesthetics
The TD just looks better In my opinion as it has more flash and less plastic. Performance wise yes they do differ some but, they both run quite well.
Kind of like the Opal GT. It will always be a poor man's Corvette but, it's still fun to drive.
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Re: TD .049/Medallion .049 differences
SuperDave Tue Mar 13, 2012 10:21 am
Ron:
I was looking for something more substantive than a preference.
One cost more to produce and to buy.
Why?
SD - Master of the Socratic method of instruction
I was looking for something more substantive than a preference.
One cost more to produce and to buy.
Why?
SD - Master of the Socratic method of instruction
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Re: TD .049/Medallion .049 differences
Cribbs74 Tue Mar 13, 2012 10:40 am
SuperDave wrote:Ron:
I was looking for something more substantive than a preference.
One cost more to produce and to buy.
Why?
SD - Master of the Socratic method of instruction
Dave,
You kill me..........
Almost everyone here knows the differences. These engines have been around since the early sixties. I say almost as some may not.
What makes one better than the other? That is really up to the owner. I bet there are guys on here that prefer the Medallion over the TD.
I think the main differences are crank, cylinder porting and head. The Medallion venturi is said to flow better.
I think in some applications the Medallion may actually excel over the TD.
BTW, I own every TD from .010-.15 with the exception of the MKII.
I am a TD fanatic!
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Re: TD .049/Medallion .049 differences
Surfer_kris Tue Mar 13, 2012 10:42 am
It's all about horse power and bragging rights as usual...
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Re: TD .049/Medallion .049 differences
Cribbs74 Tue Mar 13, 2012 10:47 am
Surfer_kris wrote:It's all about horse power and bragging rights as usual...
Lol Kris,
True, numbers don't lie. My position is that both are very good engines. What makes them better to one person may not be so for the next.
Based on pure stand alone performance the TD is clearly the winner.
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Re: TD .049/Medallion .049 differences
Cribbs74 Tue Mar 13, 2012 10:52 am
Now that I look at it closer the Medallion test was done on 15% nitro and a year later. I wonder what the Medallion would have done if tested on the same day same 25% fuel as the TD?
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Re: TD .049/Medallion .049 differences
SuperDave Tue Mar 13, 2012 10:59 am
Ah, I see side-tracking evasions of my central question.
There are internal differences between the two engines. What are they? (Those differences caused the TD .049 to be more expensive to produce and purchase)
There are internal differences between the two engines. What are they? (Those differences caused the TD .049 to be more expensive to produce and purchase)
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TD .049/medallion .049 differences
proctor Tue Mar 13, 2012 12:37 pm
Main internal difference is of course the rectangular inlet on the TD versus
drilled inlet on Medallion.
John
drilled inlet on Medallion.
John
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Re: TD .049/Medallion .049 differences
SuperDave Tue Mar 13, 2012 12:40 pm
proctor:
That's one, good for you!
But there are others...............................
That's one, good for you!
But there are others...............................
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Re: TD .049/Medallion .049 differences
microflitedude Tue Mar 13, 2012 12:48 pm
Dual boost and bypass flutes on the TD. Plain dual bypass on the Medallion with no boost flutes.
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Re: TD .049/Medallion .049 differences
nitroairplane Tue Mar 13, 2012 12:49 pm
Boost flutes on the tee dee.
Larger square crank port.
Higher impressions head.
And a "better" intake.
Larger square crank port.
Higher impressions head.
And a "better" intake.
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Re: TD .049/Medallion .049 differences
SuperDave Tue Mar 13, 2012 12:57 pm
Matt and Indra have SCORED! Nice job, lads! You've done yourselves proud. 
(They undoubtedly had to dig for those answers which was my intention originally)
(They undoubtedly had to dig for those answers which was my intention originally)
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TD .049/medallion .049 differences
proctor Tue Mar 13, 2012 12:57 pm
Was the inlet tract in crankshaft drilled larger? or additional boost ports in TD cyl?
There was a higher parts count of course on TD carb.
Apart from carb was there actually significant additional production costs for
TD or was it simply priced higher because modelers wanted a more powerful
engine.
John
Sorry you beet me to it, I have not mastered save/ modify thing yet when posting
There was a higher parts count of course on TD carb.
Apart from carb was there actually significant additional production costs for
TD or was it simply priced higher because modelers wanted a more powerful
engine.
John
Sorry you beet me to it, I have not mastered save/ modify thing yet when posting
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Re: TD .049/Medallion .049 differences
Cribbs74 Tue Mar 13, 2012 1:05 pm
SuperDave wrote:Matt and Indra have SCORED! Nice job, lads! You've done yourselves proud.
(They undoubtedly had to dig for those answers which was my intention originally)
Actually Dave....
I Noted the differences in one of my first replies.
I just didn't provide that level of detail.
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Re: TD .049/Medallion .049 differences
nitroairplane Tue Mar 13, 2012 1:12 pm
Dave,
No digging involved its common knowledge and Ron did get there first I think.
No digging involved its common knowledge and Ron did get there first I think.
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Re: TD .049/Medallion .049 differences
SuperDave Tue Mar 13, 2012 1:33 pm
Indra:
As to common knowlege, remember there a bunch of people on the forum that probably don't share the level of expertese as the experienced here. I write in an attempt to bridge those differences.
BTW, what is the median age level here?
As to common knowlege, remember there a bunch of people on the forum that probably don't share the level of expertese as the experienced here. I write in an attempt to bridge those differences.
BTW, what is the median age level here?
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Re: TD .049/Medallion .049 differences
Cribbs74 Tue Mar 13, 2012 1:37 pm
SuperDave wrote:Indra:
As to common knowlege, remember there a bunch of people on the forum that probably don't share the level of expertese as the experienced here. I write in an attempt to bridge those differences.
BTW, what is the median age level here?
Good question I bet it's around 45yrs.
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Re: TD .049/Medallion .049 differences
RknRusty Tue Mar 13, 2012 1:43 pm
The Medallion #2 cylinder only had one bypass.microflitedude wrote:Dual boost and bypass flutes on the TD. Plain dual bypass on the Medallion with no boost flutes.
Of course I took it off of mine and replaced it with a Killer Bee style SPI cylinder/piston set.
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Re: TD .049/Medallion .049 differences
microflitedude Tue Mar 13, 2012 2:09 pm
cribbs74 wrote:SuperDave wrote:Indra:
As to common knowlege, remember there a bunch of people on the forum that probably don't share the level of expertese as the experienced here. I write in an attempt to bridge those differences.
BTW, what is the median age level here?
Good question I bet it's around 45yrs.
About 41 - 42.
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Re: TD .049/Medallion .049 differences
microflitedude Tue Mar 13, 2012 2:18 pm
RknRusty wrote:The Medallion #2 cylinder only had one bypass.microflitedude wrote:Dual boost and bypass flutes on the TD. Plain dual bypass on the Medallion with no boost flutes.
Of course I took it off of mine and replaced it with a Killer Bee style SPI cylinder/piston set.
So there were a few variations? Maybe the one I saw had a misplaced cylinder.
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Re: TD .049/Medallion .049 differences
microflitedude Tue Mar 13, 2012 2:20 pm
I see now, it was the RC version that had the dual bypass cylinder to compensate for power loss. The standard, like you said, had one port.
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Re: TD .049/Medallion .049 differences
fit90 Tue Mar 13, 2012 2:27 pm
I believe that all but the very latest Tee Dees had a taper bored cylinder. I do not think any Medallaions did.
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Re: TD .049/Medallion .049 differences
SuperDave Tue Mar 13, 2012 2:33 pm
fit90 wrote:I believe that all but the very latest Tee Dees had a taper bored cylinder. I do not think any Medallaions did.
True, Fit, I was just hesistant to mention yet another difference taught me by Paul Gibeault of "mouse racer" fame when I bought his "Jewel Case" TD .049 recently.
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Re: TD .049/Medallion .049 differences
Puffie40 Tue Mar 13, 2012 4:14 pm
If you look closely, you can see some flaws in the data that show some inconsistency. For instance, one medallion uses 30% nitro and the TeeDee used 25% nitro, while the rest use 15%. The difference in years will also affect data as well.
There is a margin of error here that I would say renders this chart unusable for power output.
I think if you set up a test stand and test all the motors at the same time, with the same fuel, that the motors will start to appear to put out the same power. The Tee Dee would have a higher power band, but I would think it should be closer to the others in power output.
There is a margin of error here that I would say renders this chart unusable for power output.
I think if you set up a test stand and test all the motors at the same time, with the same fuel, that the motors will start to appear to put out the same power. The Tee Dee would have a higher power band, but I would think it should be closer to the others in power output.
cribbs74 wrote:Surfer_kris wrote:It's all about horse power and bragging rights as usual...
Lol Kris,
True, numbers don't lie. My position is that both are very good engines. What makes them better to one person may not be so for the next.
Based on pure stand alone performance the TD is clearly the winner.
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