1:10 or 1:12 scale project wanted...

[skellyo]

Originally Posted by cemetery gates

Uggh, the 5s 4000 is not going to fit without hanging off the side of the chassis. Looks like the highest mAh 4s pack is the 4000. Anyone know of any others that will fit?

Bye:018:

Complaining about not being able to fit a 5S 4000mAh pack on a vehicle this small is comparable to someone complaining that a big block V8 won't fit on their bicycle. :027:

[BrianG]

Originally Posted by skellyo

Complaining about not being able to fit a 5S 4000mAh pack on a vehicle this small is comparable to someone complaining that a big block V8 won't fit on their bicycle. :027:

LOL! :005:

@GO-RIDE: Mike has the hardened pinion in the store right now. Just go to the gears page, scroll down to the Mod1 5mm bore pinions, and open the drop-down list. You will also need the 5mm to 1/8" bore adaptors. For these, scroll down to the botton of the "RC Monster parts" page.

EDIT: Skellyo beat me to it...

@Cemetary: lol, no, I don't think 4s will fit. You'd have to have it haging off the side. But 3s should fit with careful tray fabrication. My tray sits so about 1mm away from the spur so I have options should I decide to go with 3s later.

[GO-RIDE.com]

Brian, thanks for the info on the pinions. I was thinking a 12 or 13 based on the other posts I've read. My motor is a 6400, but I also have a 4300 if the 6400 runs too hot. Are those pinions available from RC-Monster and are they a direct fit for a 10th scale motor (Mamba/Novak)? If not available from RC-M then were might I find them?

Thanks, Scott

[QUOTE=BrianG@GO-RIDE.com: Welcome to the forums! I'm not familiar with the GTB systems, so I can't really offer advice. I was running 16T pinion and was getting some overheating using a MM and 4600 motor on 2s. I have 12T, 13T, and 14T hardened pinions coming (hopefully today) so I should be able to find the sweet spot with one of those. I'm thinking the 13T will be the ticket.
[/QUOTE]

[skellyo]

Originally Posted by GO-RIDE.com

Brian, thanks for the info on the pinions. I was thinking a 12 or 13 based on the other posts I've read. My motor is a 6400, but I also have a 4300 if the 6400 runs too hot. Are those pinions available from RC-Monster and are they a direct fit for a 10th scale motor (Mamba/Novak)? If not available from RC-M then were might I find them?

Thanks, Scott

The hardened MOD1 pinions that Mike sells are a 5mm bore. You'll need one of the bore reducers at the bottom of this page to fit them on your Novak motor:
http://www.rc-monster.com/rcm.php

[GO-RIDE.com]

Does anyone know the gear ratios or overall gear ratio of the stock CRT.5?

Scott

[BrianG]

I think they use a 14T pinion, but don't hold me to that. You really can't compare the stock nitro ratio with BL though...

[GO-RIDE.com]

Originally Posted by BrianG

I think they use a 14T pinion, but don't hold me to that. You really can't compare the stock nitro ratio with BL though...

I'm looking for the diff ratios to calculate the final drive ratio. Novak uses a formula (Trans x Spur)/Pinion = 11.0 for a 6.5 in a 1/10 off-road buggy. Due to the 4X4 and greater weight of the CRT.5 I was thinking of 12 or 13.

I can't seem to find the diff ratios in the owners manual. Any help out there with this formula?

[BrianG]

Well, got the pinions in today and have the CRT.5 up and running! YAY! Temps are much better, but still a little hot. But maybe that's because I put regular 2.2" wheels and Proline snake-eyes on it. :) It looks so much more like a truggy now though, and the extra ground clearance is nice.

Originally Posted by skellyo

Complaining about not being able to fit a 5S 4000mAh pack on a vehicle this small is comparable to someone complaining that a big block V8 won't fit on their bicycle. :027:

I meant 4s 5000mAh:024:, and well when I get the CRT.5 it's gonna get a 10L running on 3s-4s.POWER!!!!!!!!!!:mad:1

Originally Posted by BrianG

Well, got the pinions in today and have the CRT.5 up and running! YAY! Temps are much better, but still a little hot. But maybe that's because I put regular 2.2" wheels and Proline snake-eyes on it. :) It looks so much more like a truggy now though, and the extra ground clearance is nice.

Nice, we need some new pics!

Bye:018:

[skellyo]

Originally Posted by cemetery gates

I meant 4s 5000mAh:024:, and well when I get the CRT.5 it's gonna get a 10L running on 3s-4s.POWER!!!!!!!!!!:mad:1

10L? Why? IMO, that's just wasteful overkill for a motor in that thing. I'd also be willing to bet you'll have a hard time loading that motor enough to keep it cool in such a light vehicle.

Originally Posted by skellyo

10L? Why? IMO, that's just wasteful overkill for a motor in that thing. I'd also be willing to bet you'll have a hard time loading that motor enough to keep it cool in such a light vehicle.

Possibly, but I want a motor with a 5mm shaft. I don't think I could get an S sized motor with 5mm shaft. (besides a Neu 1506) Also, I don't like the idea of a bore reducer. I think a 10L on 3s should be some what tame:027:

Bye:018:

[GO-RIDE.com]

Originally Posted by BrianG

Well, got the pinions in today and have the CRT.5 up and running! YAY! Temps are much better, but still a little hot. But maybe that's because I put regular 2.2" wheels and Proline snake-eyes on it. :) It looks so much more like a truggy now though, and the extra ground clearance is nice.

I was wondering when someone was going to do the full truck wheels. The Losi pro at my local track said it would handle poorly due to the wheels being to close together (short chassis), but I'd still like to try it for rough backyard tracks or bashing. Post some pics when you can.

What pinion did you settle on?

[riceman]

Originally Posted by BrianG

Well, got the pinions in today and have the CRT.5 up and running! YAY! Temps are much better, but still a little hot. But maybe that's because I put regular 2.2" wheels and Proline snake-eyes on it. :) It looks so much more like a truggy now though, and the extra ground clearance is nice.

Wow - I missed this post. I actually tried 2.2 truck wheels myself a couple weeks ago. I robbed my Associated GT2 stock wheels and tires and the Bowties off my T4 and took the .5 for a spin on the track. I had some issues with the Proline splines rubbing but no issues with the Associated wheels. The few laps I did get in before I shut it down (due to the rubbing) convinced me to invest in a set of the truck tires. I went to my LHS and picked up a set of the Associated Rear wheels and the last pair of Snake-eyes. I had to order the other pair of tires and am still waiting on them. I think the extra ground clearance will offset any handling losses at the track I run at. Check out my video with the stock buggy tires and you'll see my truck constantly flipping over on the straights. The ruts and sometimes small chunks of dirt are just brutal.

Brian - did you need to re-gear for the added diameter of the snake-eyes?

On a side note I raced it for the first time a couple weeks ago in the 1/10th gas truck class ( no other electrics out that night). If I could have kept it off it's lid I probably would have done better. I think I already admitted in another thread how poorly I drive. I did open some nitro eyes though when I opened it up on the straight. :027: Two five minute quals (3rd and 2nd) and then 4th (15 seconds separating 2nd-4th - good thing I didn't have to pit :dft001: ) in the 10 min main.

[BrianG]

No can do. It's dirty now. Looks the same as before, just with bigger tires. :)

[BrianG]

It seems to handle better in the backyard due to more tire area touching the ground. And it looks better too. :) Since I'm running large tires, I used the 12T pinion. For track use, I'll probably go with the stock size for cooler running.