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-   -   New B-MAX 4 III (http://www.oople.com/forums/showthread.php?t=135306)

jhammond 02-09-2013 09:52 PM

Have to say this looks very well put together.

mes 03-09-2013 06:19 AM

Quote:

Originally Posted by badger5 (Post 800306)
... I wonder how it will do with no top deck, chassis must be over 2mm? ...

I bet the screws along the centreline attach to a longitudinal chassis stiffener. By removing screws, you should be able to increase flex for slippery tracks.

feniks 03-09-2013 04:38 PM

car looks verry fine indeed . aldo I do miss a balldiff in there as that is what I did not like on the XB4 and there fore prefer still my old Bmax

blue_pinky 04-09-2013 09:46 AM

I agree...really hope there is a ball diff option...or the old/previous ball diffs still fit!

Be interested to see how it deals with bending/twisting down the length of the car without a top deck...it must keep the transmission in line somehow!

Does look nice to me though...I want!!! :thumbsup:

JohnM 06-09-2013 01:29 PM

Quote:

Originally Posted by Bastos (Post 799957)

If only those gears would fit in a XB4:wub

discothesnake 06-09-2013 02:24 PM

Quote:

Originally Posted by JohnM (Post 801119)
If only those gears would fit in a XB4:wub

Must admit, quality looks top notch.

dpackster1980 06-09-2013 08:59 PM

Put my deposit down. It looks really good and better equipped than I thought. :wub

I hope it's not delayed otherwise I'll have no 4wd for the 2nd round of Worksop.

Leedsey 16-09-2013 04:48 PM

B max 4iii flex control method?
 
What's others take on this -

Central shaft seems to have a spring in the extra piece near the spur gear Which is presumably allowing for flex during landings, to keep drivetrain together (not dual motor placement?)
Front top brace over steering housing at the front of the chassis seems wide and made out of alloy/metal- presumable to control sideway flex.
Lower center of gravity as Main metal chassis has side plastic add on, rather than over the top like a xb4 and this metal is 'short' to allow the diff housing to be lower at each end:thumbsup:

Considering the above, if I've assumed correctly (and the fact most xb4 have benefited from the full length top plate retro added) do you think the diffs fixed to the metal chassis on just one side combined with no top plate is likely to be problematic?:confused:

discothesnake 16-09-2013 06:02 PM

The only spring I see is for the slipper adjustment.

The car will be spot in. Yokomo don't build a bad car.

neallewis 16-09-2013 11:29 PM

Quote:

Originally Posted by Leedsey (Post 803338)

Central shaft seems to have a spring in the extra piece near the spur gear Which is presumably allowing for flex during landings, to keep drivetrain together (not dual motor placement?)

Do you mean the slipper spring underneath the -ve battery lead in this?
http://imageshack.us/a/img542/7395/zx6v.jpg

Quote:

Originally Posted by Leedsey (Post 803338)
Front top brace over steering housing at the front of the chassis seems wide and made out of alloy/metal- presumable to control sideway flex.

XB4 brace between posts is made of carbon, and is narrower here. I'd have thought the width would be to do with the Ackerman geometry setup of the steering cranks, giving enough clearance of the front gearbox/diff housing in between, rather than to directly control stiffness/flex at this point of the chassis.


Quote:

Originally Posted by Leedsey (Post 803338)
Lower center of gravity as Main metal chassis has side plastic add on, rather than over the top like a xb4 and this metal is 'short' to allow the diff housing to be lower at each end:thumbsup:

Yes lower diffs will help lower overall CoG. The XB4 used the overlayer of plastic tub to control the flex of the chassis. Here the Yok seems to not use the plastic tub to influence flex or stiffness, but the diagonal braces from gear casing down to central spine along the centreline of the alloy chassis. I guess like 1/8th scale.

Quote:

Originally Posted by Leedsey (Post 803338)
Considering the above, if I've assumed correctly (and the fact most xb4 have benefited from the full length top plate retro added) do you think the diffs fixed to the metal chassis on just one side combined with no top plate is likely to be problematic?:confused:

The inner camber link mounts are metal and will hold or brace the diff casings. If this is a weak-point, we've yet to see?

I had the XB4 full top deck, but snapped it in between the motor mount and rear slipper bearing mount. I guess the chassis flexed a bit too much on an impact at the oople race last month. A bit of dremmel work allowed me to use the rear brace piece along with the original kit top brace.

Leedsey 17-09-2013 08:09 AM

B max 4 no top plate
 
Thanks Neil, understood now.
(thought the back bulk head braces were for lipo retention as deck is sloping in-wards, didn't know like this in 1:8)

The detailing and build looks very nice indeed, see why you like it.
I would be very interested in your opinion once its out and been driven

smokes 17-09-2013 11:06 PM

look like the are creating an I beam in the spine which much stiffer and stronger shape than a flat top deck

OneKiwi 18-09-2013 05:55 AM

Looks like it could be together with the braces.

t8rtot 18-09-2013 01:15 PM

To me, it looks just like an 1/8 buggy setup. Genius!

dpackster1980 21-09-2013 03:48 PM

Don't know how it goes, never seen one in the flesh and I don't care. Looks like they've put a lot of thought into the design.

I've put my pre order in.

AfroP 27-09-2013 09:58 PM

http://www.neobuggy.net/2013/09/27/u...d-b-max-4-iii/

neallewis 28-09-2013 12:26 AM

Looks ace that. Pre-ordered.

TripleX 28-09-2013 03:20 PM

http://petitrc.smugmug.com/Hobbies/2...9794&k=GTNHRcg

dpackster1980 27-10-2013 01:47 PM

Not impressed Yokomo have changed the delivery date on the week it's due. Surely Yokomo Europe knew of the delay beforehand. Gutted it looks like I'm racing a borrowed car for the 2nd round of Worksop because I've just sold my 410 based on the original delivery date. Tut tut :thumbdown:

mikeyscott 27-10-2013 03:40 PM

Quote:

Originally Posted by dpackster1980 (Post 812328)
Not impressed Yokomo have changed the delivery date on the week it's due. Surely Yokomo Europe knew of the delay beforehand. Gutted it looks like I'm racing a borrowed car for the 2nd round of Worksop because I've just sold my 410 based on the original delivery date. Tut tut :thumbdown:

I always heard November, which it's not yet.

skyaflake 27-10-2013 08:59 PM

Date has changed from end October to begin November. Not a problem at all :lol:

mikeyscott 27-10-2013 10:13 PM

Quote:

Originally Posted by skyaflake (Post 812442)
Date has changed from end October to begin November. Not a problem at all :lol:

No biggie :)

discothesnake 27-10-2013 10:45 PM

Quote:

Originally Posted by dpackster1980 (Post 812328)
Not impressed Yokomo have changed the delivery date on the week it's due. Surely Yokomo Europe knew of the delay beforehand. Gutted it looks like I'm racing a borrowed car for the 2nd round of Worksop because I've just sold my 410 based on the original delivery date. Tut tut :thumbdown:

You've always got to expect a bit of come and go with a brand new kit. I don't think there was ever a date for the release. End of October they said. If it's a week late then so be it.

dpackster1980 27-10-2013 11:27 PM

Quote:

Originally Posted by mikeyscott (Post 812362)
I always heard November, which it's not yet.

Yokomo Europe website stated end of October until a few days ago. I've got a borrowed XB4 on standby.

dMITIj 01-11-2013 09:42 PM

So the B-MAX4 III is now on sale in Japan :drool:

http://peecee.dk/uploads/112013/ah02_big_thumb.jpg

can't wait for this bad boy :)

skyaflake 01-11-2013 10:44 PM

People in Europe have to wait another week :yawn:

dikke hond 02-11-2013 08:24 AM

Can't wait to get mine! :D

dMITIj 02-11-2013 06:55 PM

New part list is up:
http://www.teamyokomo.com/partslist/...s/b_max43.html

mekios 03-11-2013 04:51 PM

From a quick scan i can see that front hubs are 12mm, unlike the current B44 ones.
Now where do we find wheels...

mes 03-11-2013 05:05 PM

Kyosho, if Yokomo wheels are not available I guess. In case HB Cyclone D4 wheels are still available, that's another option; I used to run them on my ZX-5 SP and they were great.

discothesnake 03-11-2013 05:07 PM

I'd imagine the latest Associated wheels will fit?

gurnell 03-11-2013 06:57 PM

Diffs
 
Does anyone know whether the kit comes with ball or gear diffs?

skyaflake 03-11-2013 07:53 PM

Gear. Ball-diff is optional.

dpackster1980 04-11-2013 09:11 PM

Ball diff option too. Very nice indeed. :thumbsup:

skyaflake 05-11-2013 02:12 PM

For the UK people: CML has the car in stock, as just seen on their Facebook account.

Shouldn't take long before stores are having them :thumbsup:

Big G 05-11-2013 03:16 PM

Quote:

Originally Posted by discothesnake (Post 814035)
I'd imagine the latest Associated wheels will fit?

The B-Max 4 III uses 12mm hexes throughout compared to the 10mm/12mm setup the B44.2 adopted. Can't confirm if rear wheels will be interchangeable, but can't see why not from a quick look.

OneKiwi 05-11-2013 03:49 PM

Hope its changable to 14mm from either TD or xray.. I have those wheels

discothesnake 05-11-2013 03:57 PM

Quote:

Originally Posted by Big G (Post 814447)
The B-Max 4 III uses 12mm hexes throughout compared to the 10mm/12mm setup the B44.2 adopted. Can't confirm if rear wheels will be interchangeable, but can't see why not from a quick look.

I was pretty sure all the latest B4.2/B44.2 wheels are all 12mm hex fitment?

Unless the hexes are an upgrade?

mes 05-11-2013 03:57 PM

There should be many options, including the old small front hex version; at least the old hexes are still on the parts list.

Big G 05-11-2013 04:09 PM

Quote:

Originally Posted by discothesnake (Post 814458)
I was pretty sure all the latest B4.2/B44.2 wheels are all 12mm hex fitment?

Unless the hexes are an upgrade?

B4.2 has 12mm hex all round yes. B44.2 gained 12mm hex on the rear, but kept the 10mm original hex on the front.

You can fit the B4.2's 12mm front hexes easily enough, but the offset on the B4.2 wheels is different to the B44's front wheels.


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