Vendetta Vendetta 150+ build thread

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Arrma RC's
  1. Infraction
  2. Limitless
  3. Mojave EXB
  4. Senton 3s
  5. Talion
  6. Typhon 3s
  7. Vendetta
Will post the build up of my vendetta before winter hit and what setups i ran in that time. Then continuing to fine tune things this winter.
I’ll also post on the spools I’ve built in case someone wants some guidance for them.

I had a very successful two month set of runs with my vendetta before winter hit with the best of 145mph, I have the gearing setup to crack 150 this spring with the car exactly the way it is. I hit between 143-145 5 times on the previous gearing, with stable voltage supply.

Very excited to see where I can take this chassis to.
My goal after 150 is definitely to get into the 160-170 range to compete with the fastest slash and crack past my current limitless record pb. Thankyou for checking everything out

Basic run down of the car:

Mmx8s

Killmode cap pack

Tp4050 motor

Custom spool

Upgrade to typhon 17mm hexes

Bsr foam shaved to 91-92mm height (about 2-

3mm of foam left on the rim.

Upgraded to metal front and rear exb diffs (plastic ones did hold up for my 145mph pass)
But they melted when I added a second parallel
battery weight.

All runs this past couple months we’re done with a single 5000 mah g+ cnhl battery

Diffs using 20million weight diff fluid

Properly shimmed to spin freely(which actually meant removing what they had installed from the factory because it was binding)

Custom made chassis brace from a cut down limitless brace

Custom made carbon fiber wing set

Filled front wheel holes on body

Custom carbon fiber front diffuser along with full carbon under tray.

With the under tray I made from carbon I was able to drill into the front control arms and make droop screws to adjust the height like the limitless

Added fuel line to the rear shocks to help keep them from compressing


My setups and speeds consisted of:
Stock motor with mmx esc on 4s, stock speed gear and stock spur, stock chassis and tires, 107 mph best with about 10 runs all near the same speed( tires eventually cracked apart)

Mmx8s esc / tp4050 motor on single 4s 117mph pb, only did 2 runs on 4s with this setup

Mmx8s /tp4050 motor on single 6s
145mpg pb, about 15-20 completed runs on this setup. 8 or so with the car going airborne, the rest between 139-145
All on the same gearing to try and make sure I could fix my other issues.





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The body did get destroyed during a 143 mph crash.
The biggest problem I seem to have with this car is it likes to go airborne about 130-135.
I have done some more changes now and this should be fixed
This was the last run of the season and it was 30 degrees with snow and salt on the road, I should not have chanced it really.


Since then I lowered the front down more and realigned the camber and toe
I am also working on adding a second battery in the front bumper to then run parallel this spring and also shift some weight to the front of the car

Here’s the 145mph pass,
Run is around the 1:10 mark
 
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Here’s how I built my spools.
Two slipper hub plates
One long red insert
Foh mod 1 solid gear from island hobby nut

Smallest gear for this design that fits is 34,
I made a 36 first and did my fastest passes with 28/36.
30/34 is the largest you can run in the housing without making the spur smaller.

To make a spool smaller then 34t you have to use a different spool setup
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I’m currently working on a new design spool to allow me to run smaller sizes, but using the gearing I have to work with is what should dictate the motor kv that is chosen
 
Here’s how I built my spools.
Two slipper hub plates
One long red insert
Foh mod 1 solid gear from island hobby nut

Smallest gear for this design that fits is 34,
I made a 36 first and did my fastest passes with 28/36.
30/34 is the largest you can run in the housing without making the spur smaller.

To make a spool smaller then 34t you have to use a different spool setup
View attachment 194682View attachment 194683View attachment 194684View attachment 194685View attachment 194686
I’m currently working on a new design spool to allow me to run smaller sizes, but using the gearing I have to work with is what should dictate the motor kv that is chosen
There is another member on the forum that's ran a 29t..im sure he'll chime in.
 
There is another member on the forum that's ran a 29t..im sure he'll chime in.
I’ve almost got my 30t one built with a saga gear. I’ll post it up shorty. I saw one guy with a similar design as my first one but he cut the slipper hubs down to allow the smaller gear. I’m trying something a little different.
My goal is to build something that others can copy somewhat easily
 
I’ve almost got my 30t one built with a saga gear. I’ll post it up shorty. I saw one guy with a similar design as my first one but he cut the slipper hubs down to allow the smaller gear. I’m trying something a little different.
My goal is to build something that others can copy somewhat easily
Awesome to see you share what works.some are secretive. I share everything also.spool makes 1/10 a blast 👍👍👍
 
Awesome to see you share what works.some are secretive. I share everything also.spool makes 1/10 a blast 👍👍👍
I’m pretty open about my setups other than specifics on the motors for a few reasons. Spent a lot of time researching to choose my motors and the same speeds can be achieved with different motors/Kv’s depending on battery supply and gearing for the motor. So when people ask i get the curiosity but it’s not the answer to automatically go fast.
 
I’m pretty open about my setups other than specifics on the motors for a few reasons. Spent a lot of time researching to choose my motors and the same speeds can be achieved with different motors/Kv’s depending on battery supply and gearing for the motor. So when people ask i get the curiosity but it’s not the answer to automatically go fast.
Definitely gotta do your work an open your wallet to get good #s.so much research,test,tuning,crashing etc..guess if I was running 190s I'd probly keep more to myself.your logs show PP smooth trigger finger.at what speed did ya start useing something.im at 140mph an crashingmore an more with no gyro or pp.
 
Definitely gotta do your work an open your wallet to get good #s.so much research,test,tuning,crashing etc..guess if I was running 190s I'd probly keep more to myself.your logs show PP smooth trigger finger.at what speed did ya start useing something.im at 140mph an crashingmore an more with no gyro or pp.
This vendetta I am using a gyro set around 10% but no perfect pass in my cars. My limitess I tried the perfect pass for some of the runs but took it back out. I did 158-159 and didn’t get any increased speed with it over my pb with that car.
I noticed in my vendetta under 50mph no matter how I set my controller because of either steering geometry or something it seems to steer all over the place. I want to get that dialed in this spring. I haven’t been using the perfect pass tho. Here’s my 145mph pass and 143. I’m lucky I didn’t lose control cuz on the top end i nailed the throttle way too fast.
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Here’s a closer look at how I made a way to run droop screws in the front so I can adjust ride height and also keep the front shocks from decompressing when going fast.
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Carbon tray that the droop screws press against
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Looks good so far.
Really pushing that platform beyond what they built out of the factory.
Much appreciated. Really want to squeak past that 150 mark on this setup come spring.
I’ve got a wide vendetta I’m also building which I’m really gonna go wild with
 
I was going to ask about how you got droop screws set up in another thread now I see. Is that 3mm carbon fiber the plate you have installed?

I'm working on my air dam game for a 1:8 GT 365mm wheelbase car. I dunno if you have seen my build thread but I am super glad you are posting all this stuff about your GTs.
 
I was going to ask about how you got droop screws set up in another thread now I see. Is that 3mm carbon fiber the plate you have installed?

I'm working on my air dam game for a 1:8 GT 365mm wheelbase car. I dunno if you have seen my build thread but I am super glad you are posting all this stuff about your GTs.
I used 2mm,
3mm just seemed to be overkill.
2mm is very rigid and strong
 
I would recommend looking into G10 FR4 epoxy fiberglass composite sheet as another option.
It is on par with carbon fiber in strength /stiffness and has 2 big perks. Lower cost and will not block radio signals.
Only one down side.... does not have that cool carbon fiber look.

https://www.amazon.com/300x335x3mm-Black-Epoxy-Fiberglass-Composite/dp/B081KTPTZZ/ref=sr_1_6?crid=6FWG2J9AZSYP&keywords=g10+sheet&qid=1645117932&sprefix=g10+shee,aps,96&sr=8-6
The radio signal problem does kind of suck.
I have my receiver mounted right under the front of the body, so the whole antenna will be out of the body but I do have to mount the gps on the rear diffuser. Thanks for the link
 
Got the new hub and axle in today. Car is ready to rock. Hopefully I can get out tomorrow for a run or two.
Instead of using the heavily shaved down foam tires That were around 92-93mm I’m using the foams I took off my limitess. They are probably 100mm and required a good bit more clearance.

I was able to get my buddy at the hobby shop to make so wheel well extensions to allow me to trim the body but not have the wheel exposed.
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