Another Brushless REVO conversion

[BrianG]

Yeah, I knew the spur gets pretty close, but wasn't sure if that spur spacer piece you got as part of the conversion kit added enough space to allow a little more clearance for larger spurs.

Since you're still using the two-speed tranny, you could gear up by simply getting a larger pinion. The thing is, to get the pinion to physically reach the spur with that mount, the pinion will probably need to be big.

Don't forget, there are three 2nd gear options, close, normal, and wide ratios, which you can use to get the gearing you want.

[Shark413]

BrianG, yeah I have the close ratio gear set. So I have several setups to test out. Std gearing and close ratrio internally, I have a 36, 38 and 40T mod 1 spurs, I have a 13 and 15T mod 1 pinions and I could use the adpater and use 48P Spurs and pinions. But I really like the mod 1 gears. I also want to get the wide ratio gear set as well. How is your brushless Revo working out? Have you tried Lipo's yet?

[BrianG]

No, no Lipos, still 14 GP3300 cells. I love my Revo. I locked it into second gear though so I could use reverse and motor brake. I'm also using the wide ratio gear set. BTW: first gear in each set is the same, it's only 2nd gear that changes. I don't know how fast it is, but is plenty fast for the small LHS track...

[GriffinRU]

After playing for some time with REVO adapters found out that rear motor support is the most important thing.

I like this setup, as being close to ideal

Artur

[Serum]

My current mounts make the motor sit so low, that it hangs on the bottom of the L plate. Works like a charm. Low CG and a good support.

[BrianG]

Originally Posted by GriffinRU

After playing for some time with REVO adapters found out that rear motor support is the most important thing.

I like this setup, as being close to ideal

Artur

Personally, I like the first one better. It uses 6 screws to hold the mount down. The second one relies on only 4 screws into the relatively weak stock motor mount. I do like the rear support though, but it seems it only works for a certain motor length.

(@GriffinRU: The first setup is what I PM'd you about)

To support the rear of the motor in my current design, I just wedged a thick piece of rubbin between the underside of the motor and the mount. Not the prettiest, but it worked. :)

[GriffinRU]

Originally Posted by BrianG

(@GriffinRU: The first setup is what I PM'd you about)

:)

This one right?

Artur

[BrianG]

Originally Posted by GriffinRU

This one right?

Artur

Yup, that's the one...

Although, if it's easier, I don't think I need the pivoting base since the motor itself can be adjusted by the slots...

[GriffinRU]

Originally Posted by BrianG

Yup, that's the one...

Although, if it's easier, I don't think I need the pivoting base since the motor itself can be adjusted by the slots...

Any thoughts on this support?

Artur

P.S. flip support 180 to match mounting holes...

[BrianG]

Yeah, that looks like it could work nicely! :027: The only thing to remember is to adjust the support when you adjust the mesh, but that's no biggie. I'd probably add a thin layer of foam or some type of cushion to keep from scratching the motor, but that's easy to do.

You haven't by any chance made a stronger mount did you? I mean the longer parts that go over to the bulkhead ends and supports the stock pivot point. It seems to be made of pot-metal or something.

[GriffinRU]

Originally Posted by BrianG

Yeah, that looks like it could work nicely! :027: The only thing to remember is to adjust the support when you adjust the mesh, but that's no biggie. I'd probably add a thin layer of foam or some type of cushion to keep from scratching the motor, but that's easy to do.

You haven't by any chance made a stronger mount did you? I mean the longer parts that go over to the bulkhead ends and supports the stock pivot point. It seems to be made of pot-metal or something.

What about making them from plastic (delrin...)
You can set it once and then set gear mesh with swing arm, like with Nitro.

No, I didn't. Do they fail?

Artur

[Serum]

I would not use a delrin as material for a mount. No heat transfer and too flexible IMO, i tried a nylon mount, of 10 mm thick, but it was too flexible. perhaps you can drill holes in it and push a 7075 aluminum tube in it for support.

[BrianG]

Originally Posted by GriffinRU

What about making them from plastic (delrin...)
You can set it once and then set gear mesh with swing arm, like with Nitro.

No, I didn't. Do they fail?

Artur

Plastic should work nicely for the rear support as long as it's ~3mm+ thick. And I don't think it necessarily has to be delrin, but that sure would work.

Actually, I wasn't planning on using the "swing-arm" Nitro mesh adjustment. It is made for a pinion that sits under the spur really. The traditional slotted holes you made would be better IMO since the motor sits more to the side. I guess you could use the swing arm mesh adjustment to tweak the angle of the mount to suit personal preference though.

I've never heard of a broken motor mount, even with using the 3.3, but it seems like it's kinda cheaply made. It does seem to hold though, so maybe I'm being too anal about it.


Oh, and apologies to Shark413 for hijacking his thread... :dft001:

[Serum]

Sorry, i didn't realized it was a rear support, i thought it was meant as an entire mount.

Brian; if it can hold a nitro motor it can hold an electric as well.

[BrianG]

Originally Posted by Serum

Brian; if it can hold a nitro motor it can hold an electric as well.

Well, I was just thinking about the instantaneous stresses of an electric motor vs a Nitro.