MTX 5
11-11-2011 | 03:40 AM
#1381
Tech Elite
Joined: Aug 2001
Posts: 3,278
From: Bavaria, Germany
Wassup guys!
Plastic diff gears? ftw! That's what happens when Swauger isn't testing for Mugen. I bet he could shred those in one tank!
Not enough turn in? What body are you guys running?
Just remember...
The pros don't have problems like some of us mere mortals. They can easily identify and work around any issues on a new car and make it perform. What we see as a design/manufacturing flaw is nothing more than a minor inconvinience for the pros. They see it, fix it (by any means necessary) and the problem disappears. We end up struggling with it and eventually one of us figures it out - or a pro takes pitty on us and gives us the fix.
It's too bad that nitro has declined as much as it has in the U.S. I miss the "old crew" that did all the grunt work to figure things out make our lives easier.
Plastic diff gears? ftw! That's what happens when Swauger isn't testing for Mugen. I bet he could shred those in one tank!
Not enough turn in? What body are you guys running?
Just remember...
The pros don't have problems like some of us mere mortals. They can easily identify and work around any issues on a new car and make it perform. What we see as a design/manufacturing flaw is nothing more than a minor inconvinience for the pros. They see it, fix it (by any means necessary) and the problem disappears. We end up struggling with it and eventually one of us figures it out - or a pro takes pitty on us and gives us the fix.
It's too bad that nitro has declined as much as it has in the U.S. I miss the "old crew" that did all the grunt work to figure things out make our lives easier.
11-11-2011 | 07:36 AM
#1382
Tech Regular
Joined: Aug 2005
Posts: 490
From: Hong Kong
http://www.redrc.net/2011/11/kurzbuc...en/#more-48923
a group photo
11-11-2011 | 12:30 PM
#1383
Tech Regular
Joined: Feb 2005
Posts: 274
From: Cologne, Germany
11-12-2011 | 05:44 AM
#1384
Joined: Mar 2006
Posts: 5,120
From: www.moorebankraceway.com
it seems liek the only gear that strips is the large crown gears right? the gear strips where the pin sits in??
if this is the only place it is stripping you could just change the large crown gears and use the steel ones leaving the other gears and shafts as the lighter original parts....or are people stripping the teeth of the gears also?
if this is the only place it is stripping you could just change the large crown gears and use the steel ones leaving the other gears and shafts as the lighter original parts....or are people stripping the teeth of the gears also?
11-12-2011 | 06:47 AM
#1386
My guess is dissimilar materials would make for a poor combo in a diff, I suspect the plastics would chew quickly working against metal.
Titanium would be nice, but then you can bet it would be expensive.
Why not alloy?, my guess is cost, cast plastic can ok, as can cast steel, cast alloy is traditionally soft, you'd need machined alloy gears, which I'd guess would be expensive, like machined titanium, nice but would you pay for them?.
Titanium would be nice, but then you can bet it would be expensive.
Why not alloy?, my guess is cost, cast plastic can ok, as can cast steel, cast alloy is traditionally soft, you'd need machined alloy gears, which I'd guess would be expensive, like machined titanium, nice but would you pay for them?.
11-12-2011 | 07:43 PM
#1387
Tech Addict
Joined: Apr 2004
Posts: 589
From: fl
My guess is dissimilar materials would make for a poor combo in a diff, I suspect the plastics would chew quickly working against metal.
Titanium would be nice, but then you can bet it would be expensive.
Why not alloy?, my guess is cost, cast plastic can ok, as can cast steel, cast alloy is traditionally soft, you'd need machined alloy gears, which I'd guess would be expensive, like machined titanium, nice but would you pay for them?.
Titanium would be nice, but then you can bet it would be expensive.
Why not alloy?, my guess is cost, cast plastic can ok, as can cast steel, cast alloy is traditionally soft, you'd need machined alloy gears, which I'd guess would be expensive, like machined titanium, nice but would you pay for them?.
11-12-2011 | 07:57 PM
#1388
[QUOTE=TomB;9900705]it seems liek the only gear that strips is the large crown gears right? the gear strips where the pin sits in??
if this is the only place it is stripping you could just change the large crown gears and use the steel ones leaving the other gears and shafts as the lighter original parts....or are people stripping the teeth of the gears also?[/QUOTE
That is the place it goes and it only occurs on the one side of the diff, i shimmed the end float out of that side by using the xray shim which is .3mm as opposed to the mugen one which is .2mm. I ran the car today with this shim in and it was fine
if this is the only place it is stripping you could just change the large crown gears and use the steel ones leaving the other gears and shafts as the lighter original parts....or are people stripping the teeth of the gears also?
[/QUOTEThat is the place it goes and it only occurs on the one side of the diff, i shimmed the end float out of that side by using the xray shim which is .3mm as opposed to the mugen one which is .2mm. I ran the car today with this shim in and it was fine
11-12-2011 | 08:10 PM
#1389
Well that is kind of the bad part, cause with alloy my guess is even made with a good grade you would have to replace the gears once or twice a year, the alloy will wear, think of your pinion gears, even hard coated how long do they last?.
And even Titanium would wear, teeth meshing will always wear, hence why steel comes back to being the long option, everything else will wear out at some point a lot sooner.
Really it's why I don't mind the plastic option so much, if they can make them last six months or so, cause last I checked they were about $5 to replace.
And even Titanium would wear, teeth meshing will always wear, hence why steel comes back to being the long option, everything else will wear out at some point a lot sooner.
Really it's why I don't mind the plastic option so much, if they can make them last six months or so, cause last I checked they were about $5 to replace.
11-12-2011 | 10:53 PM
#1390
Joined: Mar 2006
Posts: 5,120
From: www.moorebankraceway.com
i just checked my spare diff and there is no in and out play on my outdrive. also, i remember when i built my diff the pin was very tightly seated in the hole of the outdrive.
Am i right in assuming you only shim the pin out if there is play? I dead set had no play between the pin and outdrive when assembled
Am i right in assuming you only shim the pin out if there is play? I dead set had no play between the pin and outdrive when assembled
11-12-2011 | 11:52 PM
#1391
Tech Fanatic
Joined: Mar 2009
Posts: 768
mtx5
i have had mugens sinse mtx2 and hate matanace why take a diff that was unbrakebil an go and do this i have always said you can by a mugen and race it not like some ather brands i hate matince like i spell
car is very good my grandson tell me
greg
car is very good my grandson tell me
greg
11-13-2011 | 11:38 AM
#1392
Tech Lord
Joined: Aug 2007
Posts: 14,052
From: Holland
The main question is if it is more reliable. If it is a guess if you can finish one race on plastic or know you can race for sure 2 or 3 races on aluminium gears is is a much improvement. Beside that, aluminium is easier to work with than steel, for sure in larger production series.
11-13-2011 | 08:50 PM
#1394
Only thing I'm not so keen on is the threads stripped out on two holes on the cover section of mine when building it, using barely any finger tip strength to put the tiny screws in.
11-13-2011 | 10:46 PM
#1395
Joined: Mar 2006
Posts: 5,120
From: www.moorebankraceway.com
Being able to flex around is likely a good thing, I known nitro cars are known to create issues with receivers when any vibrations from the car transfer into the radio gear.
Only thing I'm not so keen on is the threads stripped out on two holes on the cover section of mine when building it, using barely any finger tip strength to put the tiny screws in.
Only thing I'm not so keen on is the threads stripped out on two holes on the cover section of mine when building it, using barely any finger tip strength to put the tiny screws in.