some drivetrain comparisons between Samurai and Dolphin

The place for all things Marui.

Moderators: scr8p, klavy69

User avatar
GoMachV
Approved Member
Posts: 11431
Joined: Mon Apr 30, 2012 2:31 am
Location: Twin Falls, ID
Has thanked: 854 times
Been thanked: 2586 times

some drivetrain comparisons between Samurai and Dolphin

Post by GoMachV »

I've seen it mentioned that the drivetrain of the Aristocraft Dolphin is compatible with the Samurai. Since I am currently rebuilding a Samurai and needed a few things I ordered a Dolphin gear set and front diff.

I'll keep the Dolphin parts on the right and Samurai on the left

First thing I found is that the idlers seem to be totally compatible.
20230731_110712.jpg
20230731_110510.jpg
The Dolphin lacks a center diff, but I believe the cluster gear would be a perfect substitute if you were desperate or wanted to lock it up
20230731_110644.jpg
The diff in the bag I bought is from the later upgraded dolphin, and is substantially wider than the samurai. I do not know if the older version was the same or not. So this part is incompatible at least with the reinforcement plates installed.
20230731_110802.jpg
Next up is the sprocket and adapter, and these are identical
20230731_110620.jpg
Lastly, the front diff. The long output shaft is longer on the Dolphin by a couple mm. The short one appears to be the same. The plastics are usable but you will need to shim up the long side approx 1mm and shave off the flange on the short side. I needed this as my front diff had some issues and it worked very well.
20230731_111304.jpg
20230731_110952.jpg
It's time to stand up to the bully. Support the companies that support the industry, not the ones that tear it down. Say no to Traxxas
Factory Works website

User avatar
silvertriple
Approved Member
Posts: 1732
Joined: Sun May 02, 2021 2:31 pm
Location: France, Isere
Has thanked: 614 times
Been thanked: 931 times

Re: some drivetrain comparisons between Samurai and Dolphin

Post by silvertriple »

I had some NIP packs of Marui and Aristocraft parts...
You may add the small bevel gears are technically identical. The color slightly differs, but you can drop in the bevel gears from Aristocraft in a Samurai diff (of Ninja/Shogun/Coors except the two later ones were metal ones) and vice versa.
I've never seen a diff mounted, but the NIP I got are including a Diff gear which is similar to the Samurai rear diff (maybe first version).
I buy kits to build and ru(i)n them :-)

Dadio
Approved Member
Posts: 3906
Joined: Sun Apr 24, 2016 6:21 pm
Location: Guildford UK
Has thanked: 2352 times
Been thanked: 2017 times

Re: some drivetrain comparisons between Samurai and Dolphin

Post by Dadio »

Looking at the parts next to each other does it look like they came from the same molds ?
If a jobs not worth doing then its certainly not worth doing well.
A problem shared is a problem halved but an advantage shared is no advantage at all.

User avatar
GoMachV
Approved Member
Posts: 11431
Joined: Mon Apr 30, 2012 2:31 am
Location: Twin Falls, ID
Has thanked: 854 times
Been thanked: 2586 times

Re: some drivetrain comparisons between Samurai and Dolphin

Post by GoMachV »

I'd say no, while very similar there are some differences including where the sprues attach. They are very well copied though, just adjusting for their own design like the offset of the front diff.
It's time to stand up to the bully. Support the companies that support the industry, not the ones that tear it down. Say no to Traxxas
Factory Works website

User avatar
silvertriple
Approved Member
Posts: 1732
Joined: Sun May 02, 2021 2:31 pm
Location: France, Isere
Has thanked: 614 times
Been thanked: 931 times

Re: some drivetrain comparisons between Samurai and Dolphin

Post by silvertriple »

Well... They may have used the original Marui design. Likely modify the original parts and build a mould for it. As long as you have working design, conical bevel gears are defined by 3 things mainly : Number of teeth input, numer of teeth output and the mod. Everything else is defined from there. You could argue the pressure angle is part of the equation, but most of the times the default pressure angle is used.

But here it is very clear when you look at the parts that the design was done using the Marui design as a basis (too much similarities between the parts to be a coincidence...
I buy kits to build and ru(i)n them :-)

Dadio
Approved Member
Posts: 3906
Joined: Sun Apr 24, 2016 6:21 pm
Location: Guildford UK
Has thanked: 2352 times
Been thanked: 2017 times

Re: some drivetrain comparisons between Samurai and Dolphin

Post by Dadio »

The design of the whole Dolphin leans very heavily on the Samurai , the modular layout of components is the same , even the mounting of the bumper is the same design , the rear gearbox (disregarding quality control) may actually be better .
I think the question that's been most often asked is was there any cooperation or purchase of rights involved or was it just design theft ?
If a jobs not worth doing then its certainly not worth doing well.
A problem shared is a problem halved but an advantage shared is no advantage at all.

Dadio
Approved Member
Posts: 3906
Joined: Sun Apr 24, 2016 6:21 pm
Location: Guildford UK
Has thanked: 2352 times
Been thanked: 2017 times

Re: some drivetrain comparisons between Samurai and Dolphin

Post by Dadio »

The design of the whole Dolphin leans very heavily on the Samurai , the modular layout of components is the same , even the mounting of the bumper is the same design , the rear gearbox (disregarding quality control) may actually be better ?
I think the question that's been most often asked is was there any cooperation or purchase of rights involved or was it just design theft ?
If a jobs not worth doing then its certainly not worth doing well.
A problem shared is a problem halved but an advantage shared is no advantage at all.

  • Similar Topics
    Replies
    Views
    Last post
  • Yodel The Dolphin
    by LTO_Dave » » in Off-Topic / Chit-Chat
    4 Replies
    482 Views
    Last post by civilguy
  • 4x4 Buggy (Aristocraft-Hitec Dolphin)
    by SFC K » » in Other Makes/Models
    17 Replies
    3352 Views
    Last post by SFC K
  • Ten4 drivetrain resistance
    by Dr1rrrr » » in RC10 Buggy Forum
    5 Replies
    479 Views
    Last post by XLR8
  • RC10T2 drivetrain issues
    by Jeremy » » in RC10 Truck Forum
    10 Replies
    2068 Views
    Last post by janaya
  • How to make a drivetrain free-er?
    by Helgaiden » » in R/C Off-Topic / Chit-Chat
    4 Replies
    1153 Views
    Last post by Eau Rouge
  • Top Force Evo drivetrain issues.
    by Tomas Karlsson » » in Tamiya Forum
    12 Replies
    1465 Views
    Last post by tamiyadan
  • Motor comparisons?
    by toykilla » » in Modern Electronics
    2 Replies
    425 Views
    Last post by JK Racing
  • Some chassis plate comparisons
    by aconsola » » in Losi Forum
    16 Replies
    2454 Views
    Last post by GJW

Return to “Marui Forum”

Who is online

Users browsing this forum: No User AvatarCommonCrawl [Bot] and 0 guests