5T 2.0 platform- 19/58 gearing clearance issues looking for some help thanks...

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Tripp

Tripp

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Hey guys, I have a new 30DN DTT7 roller which is based on the 5T 2.0 chassis, as most of you all know. The stock gearing is a 19T/58T. I have a Zenoah 320rc that has a TLR 2.0 clutch housing as well as the TLR 2.0 bell housing/mount installed on the engine. To get the mesh to work out with this gearing, I had to remove some material from TLR clutch bell housing to allow it to nest in closer to the stock 30dn 2.0 based rear diff mount. Not really a big deal to me so I went ahead and did the modification. and everything appeared to be fine with the mesh at this point with the 19/58 gearing. However... Long story short, hopefully... lol
After the initial runs yesterday, I noticed a funny noise when just rotating the wheels on the bench. The below pics are what I discovered.
The brake rotor was actually grinding against the clutch bell. This has stumped me all day today so I mocked it all up with the 30dn supplied bell housing and sure enough the rotors would still make contact with the clutch bell. (54mm bell),
This does not occur with a 20t pinion and 58t spur combo, proven on the bench. So what is the problem here? I have racked my brain over this all day!
Any help from all you experts would be much appreciated, going to loose sleep over this one. Thanks!!!

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On a 2.0 the diff tower is flipped 180 vs a 1.0 5ive t. Your 30dnt truck may be based off a 1.0 chassis. Compare a 2.0 5ive t to yours and see if your diff tower is facing the same direction. I can see by your brake rotors they are the 1.0 style rotors so I'm guessing this is what your issue is.
The 1.0 engine sat further away from the tower then a 2.0 does, the 2.0 also uses bigger rotors and composite brake pads.

Take a picture over head of your truck looking down so I can see the diff tower orientation. Do you know if you have a v1 or v2 of the clone truck?
 
Rep732 said:
On a 2.0 the diff tower is flipped 180 vs a 1.0 5ive t. Your 30dnt truck may be based off a 1.0 chassis. Compare a 2.0 5ive t to yours and see if your diff tower is facing the same direction. I can see by your brake rotors they are the 1.0 style rotors so I'm guessing this is what your issue is.
The 1.0 engine sat further away from the tower then a 2.0 does, the 2.0 also uses bigger rotors and composite brake pads.

Take a picture over head of your truck looking down so I can see the diff tower orientation. Do you know if you have a v1 or v2 of the clone truck?
Click to expand...
It's the DTT7 which is a 2.0. The diff tower has the spur towards the front. I also have a v1 chassis as well and the spur is to the rear.
This consideration has been figured out. The 2.0 diff brace mounting holes are the only thing different between the two regarding this configuration. And yes the diff tower shifts rearward and the spur flips 180 towards the front. Thanks for checking!
 

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So here is a pic of my just installed Taylor rc 2.0 diff mount just to rule out any configuration issues. This is fitted with the 20t pinion and works fine. It clears the clutch bell by about 2mm'ish +-. If I installed the 19t, the rear brake rotor will in fact hit the clutch bell. Just as it did with the 30dn 2.0 based diff mount. I can't imagine how anyone could run an18/58 considering I can't get the 19 to clear brake rotor to the bell....
This is blowing my brain cells...
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Hm, your wanting to run 1.0 gearing? A 2.0 stock is 20/62 tho. I think the only way this is going to happen is if you bump up to a 62 spur or ditch the rotor that is hitting. I never dropped that low even on my road track 5ives. I've ran on my 1.0 20/58, 21/58 and my 2.0 21/62, 22/62.

Are you looking for torque and short bursts?
 
Rep732 said:
Hm, your wanting to run 1.0 gearing? A 2.0 stock is 20/62 tho. I think the only way this is going to happen is if you bump up to a 62 spur or ditch the rotor that is hitting. I never dropped that low even on my road track 5ives. I've ran on my 1.0 20/58, 21/58 and my 2.0 21/62, 22/62.

Are you looking for torque and short bursts?
Click to expand...
So, the stock 30dn DTT7 (2.0 based) roller chassis kit comes with a stock 19t/58t. Others have reported this fits just fine. I cannot get it to mesh as mentioned, without the brake rotor hitting the clutch bell as seen in the pics. So this is what is killing me right now.
As for the wanting this gearing... I just want it as close to a TRACK'ish setup as possible. 62t's are really hard to find right now. but this 19/58 is what the latest 2.0's were running as I've been told.
 
If I remember right the 2.0 clone used its own bell housing. Unfortunately you can't mix and match some of the losi 2.0 stuff. A real 2.0 couldn't do a 19/58 without issues that your running into.
 
Rep732 said:
If I remember right the 2.0 clone used its own bell housing. Unfortunately you can't mix and match some of the losi 2.0 stuff. A real 2.0 couldn't do a 19/58 without issues that your running into.
Click to expand...
And that is what I've been telling others. However with all the stock 30dn dtt7 rolling chassis parts (including bell housing and bell) and gearing of the 30dn DTT7 2.0, I cannot get it to mesh without the problems I have displayed. It;'s a brain pounder for sure. I've measured everything 30dn vs the losi and it all works out the same...
 
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The motor would have to physically be moved rearward (which they are not) and the clutch bell shaft would have to be longer for this to work. It's just crazy.
 
Rep732 said:
Yea sounds more trouble then its worth honestly and no problem. I'm looking forward to see what you come up with to solve the issue.
Click to expand...
Man, I don't know at this point. Just going run the 20/58 for now... I really do not understand how anyone is making the 19/58 work on the 2.0.
waiting for a magician to tell me the trick to how they are doing it.
 
So, I have confirmed that my Rovan LT360 v1 based chassis has 19/58 stock, the new 30dn DDT7 2.0 based chassis has 19/58 stock and many guys running a Losi 5T 2.0 have run a 19/58 gearing. All clutch housing, bell housing parts I have from all three models, all deminsion out the same. Whether they are Losi, Rovan or 30dn. With that being said, as much as hate to admit, It must be a "me" thing not an "it" thing.

Thanks for all the input! I'll be hiding under a rock in the desert for a few...
I was able to clean up the Losi clutch bell on my buddy's lathe!
I'll probably gain .000002 of a HP! :ROFLMAO:

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This is what i did. I only did this because the 19t and 20t vertigo pinions were out of stock. I know almost everyone will not want this gear ratio. I run on a very tight track and am not at all concerned about top speed. I want the short quick bursts. I now have a 20t and 21t to try out later.
I started with a 30dn DDT v2 29cc RTR
Stock gearing for that was a 19/58. 17755159611875773172904234976522.webp
Replaced with Taylor 35v2 reedcase
Vertigo 18t pinion
Vertigo clutch bell
Vertigo open clutch carrier
MOD center diff carrier
All of that was for a Losi 5t 2.0 fitment 1775516048806578637640024630570.webp
I am using fonzie engine washers and conical washers at the moment, i have to get more of one or the other.
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I am also using the stock 30dn brake rotors that came with it. There is just enough clearance between the clutch bell and rotor with the 18t pinion and 58t spur. When i go up on the pinion i will obviously gain more clearance.
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I know its close buts that a 18t pinion and i think the mesh is pretty good. It goes good, sounds good. I just need to run it more.
 
Wow! thanks for whipping out the gauges and really diving into the clearance concerns we discussed. I'm still blown away that the 18/58 works. 1 tooth on a pinion can really change the size hence closer mesh. Again, it must be a "me thing" not a compatibility issue.
Thanks for taking the time and sharing all that!
 
BTW, I tried to order two sets of the Fonzie washer/spacers this morning from Detroit and it only allowed me to get one set of (4) It said "do to inventory shortages"
 
This is the motor i took out of the 30dn as soon as i got it out of the box. There a chunk of the clutch carrier missing. They must of did that for clearance. I just never seen that before.17755180925311560694488316241258.webp
With the taylor/vertigo and mod center diff you can see i have no more adjustment on a 18t pinion. The clutch carrier and diff holder are right on each other.
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