modern parts for trx-1 Tranny???
- Lonestar
- Approved Member
- Posts: 4270
- Joined: Wed Dec 12, 2007 5:17 am
- Location: Switzerland, yannow, in Europe (or almost)
- Has thanked: 626 times
- Been thanked: 166 times
modern parts for trx-1 Tranny???
Hi Guys
I am in the process of restoring a trx-1 which I bought from a member of this site, and that, to say the least, is in a state that I would be very ashamed of selling to a fellow site member as a "runner" to be honest... I started pulling it apart yesterday and I saw some appalling stuff... some people, I swear... anyway, enough of this....
The question is: which modern (Read: easily and cheaply available) diff parts would be a direct replacement for the trx-1? The one on the POS I bought is shot (Read: main gear chewed, missing belleville, rusted outdrives, melted thrust bearing)? Anything bandit would work, maybe? The rest I have parts for I think...
Thanks a lot,
Paul
PS: Updated topic title to "tranny" rather than "diff" given the turn the discussion takes
I am in the process of restoring a trx-1 which I bought from a member of this site, and that, to say the least, is in a state that I would be very ashamed of selling to a fellow site member as a "runner" to be honest... I started pulling it apart yesterday and I saw some appalling stuff... some people, I swear... anyway, enough of this....
The question is: which modern (Read: easily and cheaply available) diff parts would be a direct replacement for the trx-1? The one on the POS I bought is shot (Read: main gear chewed, missing belleville, rusted outdrives, melted thrust bearing)? Anything bandit would work, maybe? The rest I have parts for I think...
Thanks a lot,
Paul
PS: Updated topic title to "tranny" rather than "diff" given the turn the discussion takes
AE RC10 - Made In The Eighties, Loved By The Ladies.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
- jwscab
- Super Member
- Posts: 6494
- Joined: Wed Jan 28, 2009 9:42 am
- Location: Chalfont, PA
- Has thanked: 10 times
- Been thanked: 446 times
Re: modern parts for trx-1 diff?
rebuild kit, still in stock, amazingly....
http://www.buytraxxas.com/product_info.php?products_id=606
dunno about the main gear, not in stock there, maybe ebay is your best bet.
the bandit uses a gear diff i think.....so everything is different internally. if the gear has 45 teeth(trx1 gear), it would probably fit.
http://www.buytraxxas.com/product_info.php?products_id=606
dunno about the main gear, not in stock there, maybe ebay is your best bet.
the bandit uses a gear diff i think.....so everything is different internally. if the gear has 45 teeth(trx1 gear), it would probably fit.
- Lonestar
- Approved Member
- Posts: 4270
- Joined: Wed Dec 12, 2007 5:17 am
- Location: Switzerland, yannow, in Europe (or almost)
- Has thanked: 626 times
- Been thanked: 166 times
Re: modern parts for trx-1 diff?
jwscab wrote:rebuild kit, still in stock, amazingly....
http://www.buytraxxas.com/product_info.php?products_id=606
dunno about the main gear, not in stock there, maybe ebay is your best bet.
the bandit uses a gear diff i think.....so everything is different internally. if the gear has 45 teeth(trx1 gear), it would probably fit.
Awesome - very, very helpful, thanks a lot. Now let's just hope these guys ship overseas...
Thanks
Paul
AE RC10 - Made In The Eighties, Loved By The Ladies.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
- bearrickster
- Approved Member
- Posts: 4375
- Joined: Thu Mar 06, 2008 11:36 am
- Location: Hollywood Maryland
- Been thanked: 5 times
- jwscab
- Super Member
- Posts: 6494
- Joined: Wed Jan 28, 2009 9:42 am
- Location: Chalfont, PA
- Has thanked: 10 times
- Been thanked: 446 times
Re: modern parts for trx-1 diff?
OK, I found 2 differential kits that traxxas offers, both can have a 45 tooth main gear. Why there are 2, I don't know for sure, I don't know enough about the difference between the applications.
4420 is for nitro rustler
2520 is for alot of vehicles. I'm thinking this is the parts you need. I can't find the part number for just the main gear, but i think they modified the diff a little after the trx1, so it might not be a drop in to what you have, ie, you can't just buy the gear I don't think for your application.
both are in stock at towerhobbies. I would call traxxas and ask if the main gear would fit in a trx1, and if not, if the whole assembly will fit. maybe have the old one in your hand so you can give them dimensions. I know the output shafts are 5mm, almost all traxxas stuff is like that, fortunately. The main gear is 45 teeth, so as long as it's narrow enough to fit in the trans case, it should fit!
whatever you do, make sure you let us know if it works or not, becuase sooner or later, someone here might need this info(like me )
4420 is for nitro rustler
2520 is for alot of vehicles. I'm thinking this is the parts you need. I can't find the part number for just the main gear, but i think they modified the diff a little after the trx1, so it might not be a drop in to what you have, ie, you can't just buy the gear I don't think for your application.
both are in stock at towerhobbies. I would call traxxas and ask if the main gear would fit in a trx1, and if not, if the whole assembly will fit. maybe have the old one in your hand so you can give them dimensions. I know the output shafts are 5mm, almost all traxxas stuff is like that, fortunately. The main gear is 45 teeth, so as long as it's narrow enough to fit in the trans case, it should fit!
whatever you do, make sure you let us know if it works or not, becuase sooner or later, someone here might need this info(like me )
- Lonestar
- Approved Member
- Posts: 4270
- Joined: Wed Dec 12, 2007 5:17 am
- Location: Switzerland, yannow, in Europe (or almost)
- Has thanked: 626 times
- Been thanked: 166 times
Re: modern parts for trx-1 diff?
yes, that I know, I have the manual in front of me...a01butal wrote:TRX1 diff gear is part #2725.
Thanks all for the valuable help - after a couple of hours on the internet, 2520 is the correct full diff... Traxxas doesn't ship overseas, but Tower does
Now, a closer inspection of the tranny reveals the idler gear and the top gear are also shot... idler gear I have, top gear is 21T slotted, much harder to find it seems... anyone has a spare one for sale? Part# 2795...
I'm actually thinking about putting rusty or pede gears in my trx-1 tranny, and offset it with the spur/pinion combo... mmmh...
I just spent about 3h today going thru cross reference lists... gotta love "budget" restoration projects bhahaha
Wilco - thanks all
Paul
AE RC10 - Made In The Eighties, Loved By The Ladies.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
- jwscab
- Super Member
- Posts: 6494
- Joined: Wed Jan 28, 2009 9:42 am
- Location: Chalfont, PA
- Has thanked: 10 times
- Been thanked: 446 times
Re: modern parts for trx-1 diff?
probably have to keep your eyes peeled on ebay for the upper gear, however, there is a solution, less than ideal, but.....
21t is a moderately sized 48 pitch pinion gear, If you were to purchase an aluminum pinion gear, and file a groove in the small side, and drill the hole out to the main shaft diameter, you have a nice new upper gear. Just a bit narrower than the idler. you might even be able to use the set screw to tighten it down.
if you want to be really fancy, you can get a metal idler, so you won't wear down the plastic idler with a narrow upper gear.
I went through alot of this rebuilding a blue eagle, I was almost ready to do just this option until I found the right gears.
the blue eagle is pain because there are 2 styles of the same tooth number gear, with different diameter diff ball pattern, so i had to buy both to figure out which one was right.....ugh.
21t is a moderately sized 48 pitch pinion gear, If you were to purchase an aluminum pinion gear, and file a groove in the small side, and drill the hole out to the main shaft diameter, you have a nice new upper gear. Just a bit narrower than the idler. you might even be able to use the set screw to tighten it down.
if you want to be really fancy, you can get a metal idler, so you won't wear down the plastic idler with a narrow upper gear.
I went through alot of this rebuilding a blue eagle, I was almost ready to do just this option until I found the right gears.
the blue eagle is pain because there are 2 styles of the same tooth number gear, with different diameter diff ball pattern, so i had to buy both to figure out which one was right.....ugh.
Re: modern parts for trx-1 diff?
I have a top gear you can have, PM me your shipping info and I'll get it out by Friday.
Mark
Aaaaahhhh crap! I'm about to get passed by that orange truck!
Aaaaahhhh crap! I'm about to get passed by that orange truck!
- Lonestar
- Approved Member
- Posts: 4270
- Joined: Wed Dec 12, 2007 5:17 am
- Location: Switzerland, yannow, in Europe (or almost)
- Has thanked: 626 times
- Been thanked: 166 times
Re: modern parts for trx-1 diff?
Mark,markt311 wrote:I have a top gear you can have, PM me your shipping info and I'll get it out by Friday.
you are outstanding - I thought about this restoration all nite wondering if this was worth it at all and I was ready to chuck the pile-o-parts on evilbay, but you just made me change my mind.
PM coming to you - this is MUCH appreciated. Thank you.
Paul
AE RC10 - Made In The Eighties, Loved By The Ladies.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
- Lonestar
- Approved Member
- Posts: 4270
- Joined: Wed Dec 12, 2007 5:17 am
- Location: Switzerland, yannow, in Europe (or almost)
- Has thanked: 626 times
- Been thanked: 166 times
Re: modern parts for trx-1 diff?
Mmmh I like the slotted 48P pinion idea too, but this will have to be made in due time... I have to race this car in the vintage class in early march
Thanks all for all the ideas and the help!!!
Paul
Thanks all for all the ideas and the help!!!
Paul
AE RC10 - Made In The Eighties, Loved By The Ladies.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
- Lonestar
- Approved Member
- Posts: 4270
- Joined: Wed Dec 12, 2007 5:17 am
- Location: Switzerland, yannow, in Europe (or almost)
- Has thanked: 626 times
- Been thanked: 166 times
Re: modern parts for trx-1 diff?
I also saw that the stealth diff gears are 45T too... the inner bearing would be different, but the gear could be bored out to 8mm... anyone has ever tried this?
Paul
Paul
AE RC10 - Made In The Eighties, Loved By The Ladies.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
Blue Was Better - now, Blue Is Bankrupt.
Facebook affiliate program manager: "They go out and find the morons for me".
Life is short. Waste it wisely.
Re: modern parts for trx-1 diff?
[quote="Lonestar
Mark,
you are outstanding - I thought about this restoration all nite wondering if this was worth it at all and I was ready to chuck the pile-o-parts on evilbay, but you just made me change my mind.
PM coming to you - this is MUCH appreciated. Thank you.
Paul[/quote]
No problem, just repaying some good karma I recieved from a few members of this forum.
I never thought about the stealth diff gear idea, anything is worth a try. Just remember the diff ring diamater might play a role in how that works out too.
I always thought swapping a complete stealth tranny would be an easy fix but I was always hesitant to drill any more holes in my chassis. Plus changing the axles and carriers.
Mark,
you are outstanding - I thought about this restoration all nite wondering if this was worth it at all and I was ready to chuck the pile-o-parts on evilbay, but you just made me change my mind.
PM coming to you - this is MUCH appreciated. Thank you.
Paul[/quote]
No problem, just repaying some good karma I recieved from a few members of this forum.
I never thought about the stealth diff gear idea, anything is worth a try. Just remember the diff ring diamater might play a role in how that works out too.
I always thought swapping a complete stealth tranny would be an easy fix but I was always hesitant to drill any more holes in my chassis. Plus changing the axles and carriers.
Mark
Aaaaahhhh crap! I'm about to get passed by that orange truck!
Aaaaahhhh crap! I'm about to get passed by that orange truck!
- jwscab
- Super Member
- Posts: 6494
- Joined: Wed Jan 28, 2009 9:42 am
- Location: Chalfont, PA
- Has thanked: 10 times
- Been thanked: 446 times
Re: modern parts for trx-1 diff?
as Mark said, you'll have to watch the ball diameter, but that is a great thought!
if you have taken the diff apart already (I'm guessing, based on your descriptions) take a look at how the gear is molded, does it have an offset, like, does the center of the gear actually 'sit' in the center of the gear? I'm pretty sure the stealth has no offsets, so it's probably OK as long as the balls line up somewhere on the diff rings.
I would also ream the hole out to the right diameter, to keep it concentric, and close tolerance, as well.
keep us updated!
if you have taken the diff apart already (I'm guessing, based on your descriptions) take a look at how the gear is molded, does it have an offset, like, does the center of the gear actually 'sit' in the center of the gear? I'm pretty sure the stealth has no offsets, so it's probably OK as long as the balls line up somewhere on the diff rings.
I would also ream the hole out to the right diameter, to keep it concentric, and close tolerance, as well.
keep us updated!
- jwscab
- Super Member
- Posts: 6494
- Joined: Wed Jan 28, 2009 9:42 am
- Location: Chalfont, PA
- Has thanked: 10 times
- Been thanked: 446 times
Re: modern parts for trx-1 diff?
here are pics of both. they look damn close! The associated gear looks a bit wider, but you could sand it down to the right width pretty easily......just have to use the right balls, hopefully, they are the same size, 3/32 vs 2.4mm(same), dunno for sure....doe the traxxas one use 3mm balls?
- Attachments
-
- ascc4680-stealth.jpg (19.19 KiB) Viewed 1621 times
- ascc4680-stealth.jpg (19.19 KiB) Viewed 1621 times
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute
Sign in
-
- Similar Topics
- Replies
- Views
- Last post
-
- 5 Replies
- 938 Views
-
Last post by CCristo
-
- 9 Replies
- 1182 Views
-
Last post by mark
-
- 66 Replies
- 7454 Views
-
Last post by Raman
-
- 3 Replies
- 1366 Views
-
Last post by Lonestar
-
- 2 Replies
- 1218 Views
-
Last post by Lonestar
-
- 0 Replies
- 270 Views
-
Last post by TRX-1-3
-
- 1 Replies
- 1058 Views
-
Last post by klavy69
-
- 29 Replies
- 6161 Views
-
Last post by Retro rc
Who is online
Users browsing this forum: No registered users and 1 guest