Hobao Goes Brushless

[SpEEdyBL]

Finally a 1/8 buggy that is designed for electric from the ground up. The diff in the rear really opens up space in the chassis and allows the battery to sit right next to the center drive shaft. Also the straight drive shaft will almost eliminate wear on the drive pins as they do not slide back and forth in out drives.

[FG101C]

Check out the Hyper 8.5 sprint car on NitroHouse.

http://www.nitrohouse.com/catalog/

[jhautz]

More pics of the Hyper 9 here BTW:

http://www.redrc.net/2009/02/toy-fair-2009-hobao/

[gixxer]

I really like the look of the hyper 9. hope they have some more info soon. I was going to buy the losi 8 v2 but will hold off until I find out more about this.

Jeff if you get one, you better have the full run down on that! I actually had that set up in my CRT.5, with a CD. Never finished because of racing. Would be a nice tight layout for sure. In a .5 the only thing to fit was a 44T spur I believe

Id love to put that into my 777 worlds if it could work

Although the layout (sans the center diff) is very common in smaller scale, it is really refreshing to see it in 1/8. I really wish there's a top deck or something for additional stiffness though.

I might just have to replace my Hyper 7 with the 9e once they become more available - there's one on ebay:

http://cgi.ebay.com/Hyper-9-E-versio...742.m153.l1262

[BrianG]

Wow, the 8.5 looks crappy IMO. I've seen better hacked conversions made by drunken monkeys. That can't be serious.

The 9 looks better by far since things look like they were meant to be where they are - except the ESC; that looks like an afterthought. I do like the diff in the rear, but agree they must be either reducing the spur tooth count or lowering the chassis for rear diff alignment. If they made the ESC look like it actually belonged somewhere, it would be a winner IMO.

Edit: I like the chassis grooves on the bottom. Should make it a little sturdier and act as a skidplate for reduced drag when it does bottom out. And I agree with the top plate idea; I like the durability so I make my own. But, doesn't that reduce the wanted flex for handling?

[jhautz]

Yea, they way I understand it the Hyper 9 is using a 40T spur gear on the center diff. Makes it easier to get the diff that low for lining up with the 43T front/rear diffs.

A top plate ould take alot of the available "twist" out of the chassis. that twist is important for traction. Although, they do it in 1/10 so it would probably mean going thinner on the bottom chassis plate to get some of the flex back. I think the thicker single plate is probably thougher in the long run. For sure wouldnt want the electric 1/8 stuff to turn into big fragile 1/10 style cars. I acually think that this hyper 9 layout is the closest Ive seen to ideal so far.

The only reason I think they put the ESC up top like that was becasue they were using a gigantuous hobbywing esc and there just wasnt quite enough room down low on the main plate for that big sucker.

[jhautz]

Check out the headline on the OFNA Page!!

http://www.ofna.com/
Hyper 9 E comming soon!!!

Originally Posted by jhautz

Check out the headline on the OFNA Page!!

http://www.ofna.com/
Hyper 9 E comming soon!!!

Why don't they just show it already!? Pictures and info about is available all over the net, and the one is even on ebay already - that one is really tempting me, but I shouldn't. I still need to finish my ST Pro.

twist is important for traction

You're right: some flex is good. Maybe a turnbuckle-style brace above the center drive-shaft to allow twisting but limit bending.

put the ESC up top like that was becasue they were using a gigantuous hobbywing esc

Wonder if an MMM would fit under the servo plate.

[gixxer]

Originally Posted by jhautz

Check out the headline on the OFNA Page!!

http://www.ofna.com/
Hyper 9 E comming soon!!!

good to see. according to there forum the U.S ones wont be here till May. I am tempted to buy one from ebay but since the tekin esc is not here yet I guess I can wait.

Surprised to see the mini is ready to ship though.

Also I believe you are right about the spur. The nitro uses a 40t so I would assume the electric probably does too. Would be great if we could get the slipper in there too. :)

[Nek]

I haven't even started working on my 808 kit and am already thinking of ways to put my center diff at the back

A friend is very good with making composite parts, so I might give a shot to a custom CF chassis and copy the 9 E layout with the 808 front/rear assemblies, now that be nice :) And of course a slipperential at the center (back now? lol). Someone posted on rctech about how he did his D8E like that and that got me started lol He had a good idea to extend the front driveshaft, key 2 cut ones (long truggy ones) together and hold them with an outer tube, the keying takes all the torque, not the outer tube that just keeps things lined up. Nice thinking... He explained how the hyper 9 center diff coupled with the back one but I just did not get it:

At SS I saw Kortz' Hobao Hyper 9e which was the inspiration for my car, and liked its coupling a lot better, it had a giant cut out of the diff cup and almost normal size piece of what looked like a cvd cup with the cup cut off. The giant center diff cup went over the cvd part, done. This setup allows for some flex in the chassi and is easier to work on, my idea allows no flex between the center diff and the rear diff without some binding.

Can someone make that out?

Can't wait for more pics of the 9E!! Someone buys that ebay kit already and posts some pics!!!!

While on the "1/8 chassis layout/format" subject, what do you guys think of Tekno's square can motors? I find it really good. It's similar to how the nitro engines are mounted and saves on the motor mount plate and what not. Just 2 small alu inserts that the motor bolts on and it can slide side to side for mesh. How much simpler/lighter can it gets? Only draw back I can see is if you have a large spur/pinion your motor has to be offseted to the side more and that calls for a larger chassis, probably why tekno v3 chassis are so wide. Not a very good thing imo.

What do you guys think?

[gixxer]

nitrohouse now has them listed. coming soon but you can order them. much better price then the ebay buy it now. hopefully this means they will be here soon.
http://www.nitrohouse.com/catalog/pr...ducts_id=20796