Novak HV won't Work in new E-maxx - RC-Monster Forums

**Novak HV won't Work in new E-maxx -** 12.20.2007, 07:07 PM

when you try to slide the pinion on the HV motor to line up with the spur the motor shaft is not long enough...the new e-maxx has more space between the spur and motor now..., a pinion that has a longer shaft might work ,,,here is a link to 5mm long shank pinions http://www.megamotorusa.com/ look under new stuff and scroll down

Any ideas?

12.20.2007, 10:11 PM

Novak called me and is aware now and is getting a truck to see what they can do..he commented longer shafts and longer pinions will prob add stress and be a shaft breaker, he said they may look at moving spur closer etc ...so it doesent look great for now....no simple solution he said...they will update site in week or two with an update he said....anyone need a novak hv setup?...lol

starscream · 12.20.2007, 10:50 PM

I find it hard to believe that the spur sits that far from the motor shaft as the stock brushed motors would run into the same problem.

I've never had faith in the 1/8th shafts so it sounds like you need a 5mm shaft with a Mega long shank pinion.

Serum · 12.21.2007, 04:02 AM

Austinmax;

Can you please shoot a picture of that situation?

Thanks.

_paralyzed_ · 12.21.2007, 04:19 AM

is there any gap between the spur gear and motor plate? if so I would think you could put a spacer (washers or another cut motor plate) beteween the transmission housing and motor plate to close the gap, how far off is it?

sikeston34m · 12.21.2007, 10:34 AM

The Tracking number says my new E maxx is "Out for Delivery"!

I'll take a close look at this also. My plans are to strip the motors/esc and sell those anyways.

I'm tempted to take that transmission apart and get a close up view of what it's made of.

jhautz · 12.21.2007, 10:47 AM

If this a problem on the HV maxx why wouldnt this be a problem on other motors as well?

Is this just a major screw up by traxxas?

sikeston34m · 12.21.2007, 11:00 AM

Here's the exploded view from Traxxas of the setup.

http://www.traxxas.com/products/elec...maxx_trans.pdf

I notice they have the pinions turned around with the set screw on the motor side.

There is no spacer between the slipper and the tranny. The Revo style slipper engages a pin that goes through the input shaft.

Is this slipper really that much thicker than the original?

Hmmmmmm.......

Serum · 12.21.2007, 11:05 AM

hard to tell from the exploded views, i am still hoping for a picture!

sikeston34m · 12.21.2007, 11:46 AM

I have a HV Maxx here on hand. (along with a bunch of other motors) I'll check it out as soon as mine gets here.

I hope it isn't that way. It's just going to add another element to doing conversions.

BUT, let me ask this.

Is there that much difference in the motor shaft length on the vxl motor?

They used twin vxl's in the demo maxx.

ClodMaxx · 12.21.2007, 11:59 AM

Quote:

Originally Posted by sikeston34m

They used twin vxl's in the demo maxx.

they also had a 2nd demo showing the new maxx with the novak HV system, utilizing their new single motor mount. i'll try and find pics.

lincpimp · 12.21.2007, 12:17 PM

Ok, I did a similar conversiopn to the old emaxx tranny using a revo slipper and mgt mod1 spur gears. Traxxas is using the same backing plate on the slipper that the revo uses, and I am sure that they have left a small (1mm) gap between it and the motor plate. The motor plate appears to be the same thickness as the stock plate in the old emaxx. Since the new emaxx spur mounts to the top of the slipper (like the revo spur) there is some spce between it and the motor plate (more than a std emaxx peg slipper )

I just did some mesurements on my old emaxx tranny with the revo slipper and spur. Looks like a 12-15mm long shaft (from the front plate of the motor) would be sufficient, as long as the pinion is oriented so that the setscrew is betwwen the gear and the motor plate. I can't imagine the hvmaxx motor having a shaft shorter than 12mm.

A feigao L can motor has a 15mm long shaft for comparison purposes.

sikeston34m · 12.21.2007, 12:22 PM

I have an older style HV 4400 here.

It's shaft, measured from the mounting surface, is exactly 15mm long.

NovakTwo · 12.21.2007, 12:16 PM

Quote:

Originally Posted by austinmaxx

when you try to slide the pinion on the HV motor to line up with the spur the motor shaft is not long enough...the new e-maxx has more space between the spur and motor now..., a pinion that has a longer shaft might work ,,,here is a link to 5mm long shank pinions http://www.megamotorusa.com/ look under new stuff and scroll down

Any ideas?

We just became aware of this length issue yesterday, from a comment on the Traxxxas E-Maxx forum. We have a new E-Maxx on order and will post updates concerning whatever re-designs to our HV motor will be necessary.

We were made aware (earlier) by Traxxxas of the rotor shaft diameter issue and are presently tooling up and testing a new 5mm shaft rotor and endbell assembly for our HV motor. I will check with our design team and post updates on the forums as more information becomes available.

I realize that many customers have our HV systems that were designed as a drop-in brushless replacement for the original E-Maxx. Novak is committed to a re-design that will make our HV motors compatible once again.

suicideneil · 06:10 PM

I have pictures, and it aint pretty:

taken from the traxxas forum.

EDIT: Unless Im mistaken, the concept truck at the expo with the hvmaxx mounted was a static model, so no one saw it running, or inside the gear cover- traaxas probably didnt even have a pinion mounted...