Novak HV won't Work in new E-maxx
 

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?

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

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.

Austinmax;

Can you please shoot a picture of that situation?

Thanks.

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?

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

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. :yes:

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?

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.......

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

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.

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.

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.

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.

I have an older style HV 4400 here.

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

i wonder what they did here to get this to work?

http://stampedeproject.com/iHobby-20...3285_small.jpg

http://stampedeproject.com/iHobby-20...3283_small.jpg

I have pictures, and it aint pretty:

http://i126.photobucket.com/albums/p...s/PICT0150.jpg
http://i126.photobucket.com/albums/p...s/PICT0147.jpg
http://i126.photobucket.com/albums/p...s/PICT0145.jpg

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...

No, it isn't pretty. Someone needs to tool up and make us some spur gears that are worth using with brushless.

The design of the spur gear would be MUCH better if it were dished like the spurs on the rustler design. It would then come back around the clutch pads and move the mesh much closer to the motor plate.

IMO, this design puts the load out on the very end of the "already long" Titan Motor shaft.

http://i160.photobucket.com/albums/t...m/DSC06706.jpg

@Neil - Do you have yours all taken apart yet? :lol:

I removed the transmission from the Chassis and opened it up. The gears are much wider. All steel used on the input AND the wide idler gear is steel also.

The output gear is still plastic, but it is MUCH wider than the original design.

Spacers are used on the input shaft and the output shaft where the 2 speed kit gears will go.

There is one thing that really makes me curious here. Take a look at this output gear.
http://www3.towerhobbies.com/cgi-bin...?&I=LXTKP1&P=7

See those little "teeth" sticking out? The ones arranged in a circle?

On this transmission case, there is a "window" that has two screws and a block off plate attached. This is positioned right over those "teeth" on the output gear. hmmmmmm...........

Could this be for some sort of future speedometer upgrade?

My idea of dished spur gears won't work to pull the mesh closer.

There is a clearance issue with one of the transmission mounts.

http://i160.photobucket.com/albums/t...m/DSC06708.jpg

Have you ever heard it said that most things happen for a reason?

I think it was a very underhanded thing for Traxxas to display that truck with the Novak setup when there's NO WAY that would even work.

I also think it's pretty strange how the Velineon motors just happen to have came out with a longer than normal motor shaft. Just by looking at it, I would say it's just as long as the Titan motors. Hmmmmmmm......

Traxxas has the twin Velineon setup displayed on their website. They also know it's going to be a huge burden for motor manufacturers to suddenly stop production and accomidate this change. Even though this change puts more stress on the motor shaft. It's gonna be a shaft breaker if too much power is hooked up like this.

What about all of us that have GREAT brushless motors for this setup? Oooooops, one problem! The motor shaft is going to be too short. I guess we'll just have to buy new ones. :yes: Now for a look at the market for something that will work for this........Hmmmmmm. There's the Velineon motors. :yes:

The Marketing Genius's over at Traxxas think they have created for themselves a "window" of sales opportunity.

AS SOON as I can get my hands on a copy of the single motor plate for this, I'm going to do everything I can to create a bullet proof motor plate that will clear the clutch AND pull the motor closer to the spur.

Gentlemen, I think we've been had. At least until we can figure out a way around it. :whistle:

Maybe I am dumb, but I do not see too much problem with using a motor that has a 15mm long shaft and just spacing the pinion out a little more. There is still plenty of shaft for the set screw to hold onto. Just my feeling on the subject. Plus who is going to try and use a novak hv motor in that thing? We all know that 1/8" shafts are crap for high power applications.

I honestly don't see that much of a problem either.. just ask Mike to make up a Wider Pinion or a pinion with a wider hub... I know it puts quite a bit more stress on the bearings/shaft.... but the 5mm shaft could handle quite a bit of stress as well..

Just put a neu motor in it... it has a longer shaft than most other motors.

I had the thought of using a motor with a 5mm shaft & longer pinions too. The only trouble is most of the younger guys, like on the traxxas forum, already have the hvmaxx system and cant afford to upgrade to something more expensive, so they are pretty much stuck. Novak are working on the 5mm shaft upgrade though, and hopefully the engineers will take this issue into account (they are buying a new emaxx to check the tranny issue out)- hopefully that will be a fairly simple fix.

I dont have the new emaxx or tranny- Im happy with the old one!

Maybe I over reacted a little bit.

I swapped out the motor shaft on my Cyclon Car 2000 motor. The original shaft was a 5mm turned down to 1/8" where the gear mounts.

One of the most dependable little motors I've owned. It's been ran alot with no problems at all. Good for 18 cells and 1300 watts. :yes:

There was a longer 5mm shaft here out of a Century 600 outrunner that was a perfect match.

I'll play around with this setup for awhile. Everything lined up really good.

That is one of Mike's 20 tooth pinions for a 5mm shaft. Isn't it pretty?
http://i160.photobucket.com/albums/t...m/DSC06711.jpg

looks good sikeston.

i'm sure in a worst-case-scenario for the new emaxx owners with a novak system, they'll have to pay $30 for a new, longer rotor to replace what they have. problem solved. (maybe novak will make the shaft thicker, but then everyone will have to upgrade pinions too).

i do agree with your conspiracy theory - it seems too 'planned' by Traxxas engineers to be just coincidence. older motor shafts not reaching as far forward just cannot have been overlooked.

Not too sure if I agree about the "consiracy". The revo style slipper is a certain thickness, as are the new stlye maxx spur gears. The titan motor shafts reach just fine and that is what the tranny was designed around. Plus the hv maxx is a bit long in the tooth, and needs a shaft upgrade IMO. Pinions are a cost to factor in, but we all know by now what speed to gear a certain weight to with a certain tire and motor kv. I can pick the correct gearing first time and be happy with it.

The new E-Maxx tranny with revo spec slipper looks like a great design all around.

Just use a Mega Motors long shank pinion and a revo spur and you're all set :intello:

Novak seemed on phone that a longer shaft solution was not really a option cause of costs etc ....we will see ....I see trinty has those DUO 550 Monster Truck Brushless Motors do you need 2 of them ? Anyone use em? http://www.teamtrinity.com/shop/item.asp?item=TRI10211

lol are the shafts long enough

I agree. I would doubt that Traxxas would plan that on purpose, but at the same time when they put the Novak motor in it they knew the problem existed...and...probably were not that sad about it.

Hmm, that sounds like the most reasonable theory. I have also looked at those trinity duo motors, and the shaft looks a little longer, so should be okay- its just a shame the rotor is the same length & diameter as the Hvmaxx motors = no power benefit to be had.

Traxxas is supposedly saying that the single motor mount is different and will work with the Novak motors. This from a moderator in the Traxxas forum.

Ah, so Im not the only person in two place at once eh? Seems strange that the single motor mount would thinner or have an off-set mounting area, yet thats the only way to move the motor & shaft outwards to allow the pinion to line up with the spur....

I guess we will have to wait until Traxxas gets them in stock to see how they work.

i would say one should do.

don't know about the length of that shaft though.

I don't see any special provisions made about this motor mount. It appears to bolt directly to the transmission like the double does.

No bends or anything. Just a straight 1/8" thick aluminum plate.
http://i160.photobucket.com/albums/t...otor-plate.jpg

Hummm so traxxas knew all along when they had that novak hv bolted up at the show...thats pretty sad to be deciving like that...I won't buy any motors they come out with for it ...i won't support that kind marketing pretty crappy hey would a 1515/1.5d work for new e-maxx? could you gear it right with 4s lipo?

Good lord! You guys are really giving Traxxas a hard time. Look, the revo style slipper will only fit one way, just because the hv maxx shaft is too short for this application does not mean traxxas did that intentionally. They could have designed a 32p gear that works the same way as the 48p rustler/stampede gear, but it was not required for the titan motors to work correctly. Plus the novak motor is too small and not powerful enough to give much benefit over the titan setup. If I am going to spend 250 - 300 on a brushless sytem it better be capable of twice the power/speed of what I am replacing. I am sure tha Novak's hv replacement will be up to the task, as will the castle MMM. And both of those should have 5mm shafts, so pinion placement will not be so critical.

Give Traxxas a break, they are the only MFG with a factory truck that can handle high power brushless.

I love traxxas always will, but putting their new e-maxx with a aftermarket motor bolted up that won't work if you buy it is pretty deceiving ....