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silvertriple

Marui Samurai - Another SilverTriple's journey...

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Hi everyone,

Recently a project I had in mind materialised... The Marui Samurai 4WD was one of my dreamt cars when I was 15 years old. I never got one back in the time. This car looked awesome and aggressive. It maybe the most beautiful roll cage buggy of those times, ahead of the Javelin (which is still very nice and totally among my favorites).

For the technical specs : 

  • 4WD
  • 3 Differentials
  • Chain transmission
  • 1070g !

And what is really awesome is its look. It really looks aggressive, with bigger diameter rims and low profile tyres on the front, and some smaller rims and bigger tires at the rear end. And the driver figure is much more realistic than what it was on Marui's Hunter and Galaxy...

Few press articles I found out while searching for information (not exhaustive list - I'm still searching for more)

Long story short, searches were active on "Marui" in many places for ages before even I started my Hunter project. And I saw some Samurai going thru... Until I decided it was time...

  • Few weeks ago, I contacted someone in the region where I was born and where my parents are still living. For the small story, the guy posted some pics of his Samurai on a group asking question on a car he was considering as he'd like to be able to use it without the fear of breaking something, and that was the day of my 50's anniversary... We discussed and it appear thru the discussion that the guy knew my uncle, and he accepted to book the car for me for a few months. I asked my father to go and buy the car for me, but was not sure how long it would take for him to do...
  • Decided it was time to find some parts for a project, found one set of rear plates for almost nothing and ordered them, intension was to tease about the car on some forums :)
  • A Marui chassis is always a thing to bother about when you start a Marui project. Dadio was selling one of his modeled chassis on ebay, he gave me the link and I was alone to bid on it.
  • The day I received the chassis, one good friend in another forum contacted me to proposed me a Samurai with a broken chassis, as he knew that I was that in mind. Having a chassis already, I thought the chassis was made for this one, so I decided to go for it

The first of the two Samurai arrived home last week, with a Galaxy roll cage and few parts.
KvI276R.jpg

It's not complete, but I don't mind. This is a project, a new journey, and will keep me busy for some time, which is definitely what I'm looking for :-D

Yesterday, after getting the Nichimo Spirit FF down to parts, I decided it was time to do the same with the Samurai to have a more precise idea of what was needed for it.
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Status at the end of what is missing or need rework :

  • Left and right chassis to replace (Thanks Dadio to the rescue)
  • Middle Front Bulkhead broken
  • Gearbox damaged with a lot of play for the center diff (I believe the car was probably running forward in RWD and backward in FWD :-D)
  • Rear right arm slightly damage where the pivot ball is placed. Luckily, it seems that I can just inverse the arms to get that back to work[
  • One of the front Knuckle is damaged (again a thread which was damaged)
  • Missing a roof, and roll cage requires work
  • Driver missing

On the good side : not everything is bad, and with the play on the gearbox, I feel very lucky having none of the gears to replace...

And there is also the second Samurai I'll probably not have in hands before Xmas. In any case, this is one of the new background routing I'll regularly post about in the next few weeks/months...

That's all for today!

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You have actually found some of the weaknesses I spoke about , but luckily your gears are good . The diffs are like hens teeth to find . I had 2 of these , but they are long gone . As you said the Samurai is one of the coolest looking buggies ever

Samurai in garden lettered.JPG

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54 minutes ago, KEV THE REV said:

You have actually found some of the weaknesses I spoke about , but luckily yours are good . The diffs are like hens teeth to find . I had 2 of these , but they are long gone . As you said the Samurai is one of the coolest looking buggies ever

Samurai in garden lettered.JPG

Well, The Samurai Warrior was the coolest looking Marui car, but all Marui cars were cool, and very often cooler than their counterparts on the market...

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Ball bearing size is today's question...

The Marui manual is not really explicit regarding the ball bearing size (and some may be quite specific). So if anyone can route me to the proper size information, it would be very helpful...

Thanks

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For the ninja I used 14 of the top one and 8 of the lower one. I suspect shogun would be similar numbers, and probably same sizes? The rs (rubber shielded) was for hubs ie exposed to the elements. I believe they only did 2 sizes ‘small’ and ‘large’ which is the 2 below.

4x8x3 (MS) Bearing (x1) MR84zz 

6x10x3 (RS) Bearing (x1) MR106rs 

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14 hours ago, CoolHands said:

For the ninja I used 14 of the top one and 8 of the lower one. I suspect shogun would be similar numbers, and probably same sizes? The rs (rubber shielded) was for hubs ie exposed to the elements. I believe they only did 2 sizes ‘small’ and ‘large’ which is the 2 below.

4x8x3 (MS) Bearing (x1) MR84zz 

6x10x3 (RS) Bearing (x1) MR106rs 

I went to the same conclusion. And in terms of numbers it's 10 for the 4x8x3 and 8 for the 6x10x3.

 

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21 hours ago, silvertriple said:

I went to the same conclusion. And in terms of numbers it's 10 for the 4x8x3 and 8 for the 6x10x3.

Just had a look through my parts list and I bought exactly those bearings and quantities some time ago .

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1 minute ago, Goudar said:

I grab a seat to see how it ends. Good luck !

I start to feel the pressure :-D

Not much progress this week-end. 2 days of work before the vacations, I hope to be able to have some progress (small) before xmas...

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As I  reached my parents place,

eaHIpCN.jpg

I finally succeed to get my hands on my second Samurai, which I had requested my father to catch up few weeks ago... It's in decent condition and I'm very happy with it...

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That's a beauty! Very decent condition. The perfect Xmas present. :lol:

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I know next to nothing about the Marui range of cars, but that certainly is a cool looking car!B)

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Detailed inspection of the second Samurai without getting it down to parts for the moment (have enough in the queue to work out at this stage before starting this - and the first Samurai is still waiting for parts)... 

I took benefit of the weather to take some pics...
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The driver is in, but he will require some work... I'll decide what I do with it once in parts : cleaning and rebuild or remove the paint, repaint and rebuild...
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The roof mounting will require a slight revision... TX/RX are working.
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The front body mount is broken and will require replacement (the STL is on thingiverse, that will make it)
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The front damper is having a step when moving. I will check once down to parts and cleaned up (the one from the other Samurai is dirty but seems to work much better). The piano wires acting as spring for the front suspension may require replacement, as they can play a role in the step.

The chassis is marked by usage, but is in proper condition (no apparent sign of cracks)
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The left half gearbox is damaged at the place where the motor support goes (the screw is in the Samurai box)...
q5P39BC.jpg

Other elements :
- The linear MSC is in the box, and I don't know if it is working. I will have to test it. In any case, its fixation plate is absent (I may have it with the other samurai, which would allow to reproduce the part in 3D printing if needed).
- There is an ESC to run it (Hobbywing Quicrun 1060WP), and it is directly glued with tape on the accu pack
- The rims are marked, but I have seen other in much worse state. Tires are worn out. I will need to find a solution for those.
- Differentials are working perfectly. Small details, and I don't know if it is a question of settings or a problem, this will be seen once the gear box is tore down : the rear is driving front, but the front doesn't drive rear (I think it may be link with the center differential setting, but this will need check later on).

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The different sizes is a key particularity of the Samurai.

I'm trying to recap here the different options:

  1. Original rims.
    1. You may search on Thingiverse, someone put some stl for the tires, printed in some flexible TPU filament, they may be a valid option...
    2. However,  I may have found a much better solution IMHO
  2. Other alternatives requires new rims or designs not too much different between front and rear.
    1. You may consider similar diameter tyres such as Hotshot tires, Alien8 sells Samurai like wheels for Hotshot tires (shapeways) - and it would be probably much better to get front and rear to get the same design
    2. Other solution is to use at the rear Kyosho Turbo Optima re-release wheel set (2 inches, large) and front from Kyosho 4wd Optima (jcracingproducts.co.uk) with tires from Kyosho (the front version for the one used on the Turbo Scorpion re-release which is used on the Kyosho Dirt Hog (2.2 inches, 4WD Front)...
    3. In last ressort, you may use any 4WD Hex Wheels with an adaptor (some exists on the Shapeways, and there might be even some on Thingiverse if you have the capability to print).

Obviously I prefer a combination that keep the particularity of the rims diameter difference which is key in the Samurai design.

Now that being said, you should also consider that the tires are participating to the dampening, and changing the size of the rear tire profile may lead to some damage to the shock towers... The best options is maybe the one using the original rims and tire sizes.

 

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