Another Brushless Revo Project

Isn't the a-arm going to hit the motor and wires? I mean the revo has long travel suspension.

[suicideneil]

It might do- best option is to rotate the motor so that the wires exit at the top, rather than the bottom. Still, if the motor sticks out too far towards the rear, the a-arms will hit it before the wires, but its only at the very top of the suspension travel (I have read), so it isnt too much of an issue.

[Arct1k]

Personally mount the esc over the rear shocks and ditch the mount - I wouldn't want the extra motor lead extension

Originally Posted by Arct1k

Personally mount the esc over the rear shocks and ditch the mount - I wouldn't want the extra motor lead extension

yea true..i'd do the same. U could mount the esc just before the rear shocks where theres some room to drill into d chassis...

Hey guys......thanks for checking out my pics.....another set of eyes is always a good thing. Im at work so I don't have the it in front of me right now but I dont think the motor will hit the arms but I will check...I know it looks close though.

I do agree about relocating the ECS to avoid extending the motor wires. I actually did that last night and im not crazy about the set up. Im gonna look at some of the other treads and try and find other ideas for mounting the esc closer to there rear.

I did get everything working last night. I was not to crazy about the gear mesh however.
Just from running it with the wheels off the ground...I could see the spur gear wearing down. I thought that maybe since it was a new spur it was just getting worn in. I took it outside and tried it out this morning before work and sure enough.......stripped the spur after about 30 feet.

I still have alot of work to do to iron things out. So what are my options for a pinion set up if I dont use the elektri_clutch adapter/?

[BrianG]

As I see it, your ESC mounting options are:
- Over the shocks. Makes it hard to adjust them though.
- Over the tranny. Makes it sit kinda high exposing it to potential damage from on-the-lid landings.
- If you went with electrical brakes (need to lock the tranny in second), you'd have the area where the brake servo is.

Gear mesh should not wear out that quick. Did you have it too tight? Using the paper trick to set the mesh works well.

Pinion options are kinda limited since the motor shaft isn't long enough to reach the spur using regular pinions. The Tekno mount makes the motor sit kinda far back. You could find a way to lock the clutchbell to the flyweel (JB-Weld/screws?), or use Mike's two speed pinion adaptor and only use the first gear pinion position.

Originally Posted by BrianG

As I see it, your ESC mounting options are:
- Over the shocks. Makes it hard to adjust them though.
- Over the tranny. Makes it sit kinda high exposing it to potential damage from on-the-lid landings.
- If you went with electrical brakes (need to lock the tranny in second), you'd have the area where the brake servo is.

Gear mesh should not wear out that quick. Did you have it too tight? Using the paper trick to set the mesh works well.

Pinion options are kinda limited since the motor shaft isn't long enough to reach the spur using regular pinions. The Tekno mount makes the motor sit kinda far back. You could find a way to lock the clutchbell to the flyweel (JB-Weld/screws?), or use Mike's two speed pinion adaptor and only use the first gear pinion position.

I kinda like the idea of using the mechanical breaks rather than the motor so I think Im gonna stick with that. Right now im just trying to figure out what the pro's and con's are for using pinion or clutch.

Do you think the Long Shank Pinion from Mega Motor USA would line up?
What pitch pinion would I need to go with Revo Spurs?

[BrianG]

Not sure about that. I would just get some measurements and see what works.

Revo spurs are Mod1 pitch...

Originally Posted by fore106

I kinda like the idea of using the mechanical breaks rather than the motor so I think Im gonna stick with that. Right now im just trying to figure out what the pro's and con's are for using pinion or clutch.

Do you think the Long Shank Pinion from Mega Motor USA would line up?
What pitch pinion would I need to go with Revo Spurs?

I ama big fan of KISS (keep it simple stupid), no offense if you thought I was calling you stupid...., I chose not to go with the clutch because I have more expierence with electric systems over nitro. I still have about another $650 to spend on a radio, ESC and motor...when I am done I think I am looking @ $1500-2000

UPDATE........
so here is what i did this morning....

1. Removed 2.5 trans.....installed 3.3 trans (had to use the dremel some)
2. Added center diff, FOC, rear break, close gear ratio
3. Moved ESC mount to rear shock tower
4. 15T clutch bell, Robinson 40T Spur
5. RC Monster Heatsink,clamp

You guys ad asked if the rear arm would hit the motor and wires the way I had it installed. Well the wires were in fact hitting. I took your advise and mounted the motor with the wires on top. The motor will touch a-arms only if the suspension is fully compressed.

Things I still have to do.

1. Install novak fan to esc.
2. Shorten the motor wires
3. Install tekno wing mount

Not sure I will be able to put in on the road today due to the rain.

Well the rain finally stopped. (I installed the tekno wing while I was waiting)

I loaded up the batteries....12 cells 4300mah......and fires it up. Ran for about 10 minutes with no problems. Speed probably around high 20's low 30's. hits second gear a little late but i can adjust that. front wheels came up for a few feet if I gave it full throttle off the line. All and all im very pleased. I didnt check the temps while I was running but nothing was too hot to touch. I did check temps when I got inside......motor and esc were around 100 and the batteries were 150.

Now I will play with gearing...maybe lock into second gear. I also have two 7 cell packs I may try but im not sure if 16.8v is too much.

I cant wait for the 4s 8000 lipo to get here.


Where should I wire the fan into?

[suicideneil]

Normally the fan (for the esc) would be plugged into the Rx- yours is at opposite ends of the truck, so I would say maybe take a power-tap from the BEC, or the deans plug going to the battery pack (7.2-14.4v, depending on the fan voltage).

I was able to route the wiring for the fan to the receiver. No problem there. Its a 5-7.4v novak fan and I have the CC BEC set to 6v.

I got the 4s 8000mah lipo today from true rc. I cant wait to see that it can do tomorrow.

Do you think the MM and 7xl can handle a 4s lipo?

I have noticed that most are running 8xl's in there revo's or emaxx's. Whats the advantage of a 8xl over a 7xl? I have been looking for an feigao 8xl but cant find one anywhere. Im not looking to spend the money for a Neu but im looking for another motor. I noticed that the rc monster store has wanderer's on stock.......is the wanderer 8xl comparable to the fiegao??

[lincpimp]

I can say that a 7xl will work fine on 4s. Just gear for about 35mph and check temps. You can gear up as temps allow. With good batteries you can get 45mph out of a 7xl, but 40mph will yeild better temps. Most go to 8xl as they can gear up to make up for lost speed due to a slower turning motor. And motor temps are supposed to be better. I am not sure if it is worth the extra cost.

I have a few 7xl motors and they work fine on 4s, no reason for me to change!

project complete.........well almost. I still have to put on all the rpm arms and carriers....but for the most part its done. I received my 4s 8000 true rc lipo yesterday and mounted it this morning. I spun the speed control around to better access the usb port.

I should have a video later to day.

Also if anyone has any input on another motor I would appreciate it. I cant find a feigao 8xl anywhere. Im thinking of getting a Wanderer from the store here. Im looking more for acceleration more than top speed and looking to spend 100 or less. Any suggestions??