Yokomo MX-4 SSG Special

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naushad
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Re: Yokomo MX-4 SSG Special

Post by naushad »

Dual,

Lovely build photos and I like the high quality hop ups you've used - many hard to find indeed.

Would be a shame not to give a gentle run once finished.

Dual
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Re: Yokomo MX-4 SSG Special

Post by Dual »

Parts have arrived to rectify the issue I had with the centre layshaft/front drive pulley not lining up with the motor mount that is specific to this YMP chassis/MR4-TC Special. The centre layshaft for the YMP/TC Special calls for a spacer to be used on the left side of the layshaft that moves the front drive pulley and one-way gear adapter to the right by a few mm which solves the issue I was having when using the layshaft for the earlier MR4-TC model. Along with the new layshaft setup, I installed the required ZS-132S thin rear drive belt and changed the rear differential pulley from the wide ZG-503 pulley to a Team Suzuki TS-2013 thin/standard width pulley.

Having installed the centre layshaft and rear differential, I mounted the bulkhead caps and front SSG bulkhead brace. Lastly, I mounted the motor mount onto the chassis. Apart from the issue mentioned above with the centre layshaft, the fit and finish of all the parts has been exceptional so far.

Next up is installing the steering bellcranks and upper deck onto the chassis.

ImageIMG_3042 by Vincenzo Triventi, on Flickr

ImageIMG_3044 by Vincenzo Triventi, on Flickr

ImageIMG_3045 by Vincenzo Triventi, on Flickr

ImageIMG_3046 by Vincenzo Triventi, on Flickr

ImageIMG_3038 by Vincenzo Triventi, on Flickr

ImageIMG_3048 by Vincenzo Triventi, on Flickr

ImageIMG_3049 by Vincenzo Triventi, on Flickr

ImageIMG_3050 by Vincenzo Triventi, on Flickr

ImageIMG_3051 by Vincenzo Triventi, on Flickr

Dual
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Re: Yokomo MX-4 SSG Special

Post by Dual »

Steering components ready to be installed onto the chassis.

ImageIMG_3055 by Vincenzo Triventi, on Flickr

Completed installation of the dual bellcrank system onto the chassis.

ImageIMG_3058 by Vincenzo Triventi, on Flickr

ImageIMG_3059 by Vincenzo Triventi, on Flickr

I have made a few changes since taking these photos which will be noticeable in future photo uploads. I changed out the blue anodised ball studs for a set of gold anodised versions, I replaced the stock steering kingpins for a set of Lunsford titanium units and I had Paul Sims machine a recess into the chassis to allow the steering servo to sit a little lower in chassis and allow a more secure fit. This was a modification that Masaaki Hirosaka did on Masami's touring cars in the early 2000's.

Dual
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Re: Yokomo MX-4 SSG Special

Post by Dual »

Topdeck components and hardware.

ImageIMG_3060 by Vincenzo Triventi, on Flickr

Topdeck installed onto chassis.

ImageIMG_3068 by Vincenzo Triventi, on Flickr

ImageIMG_3062 by Vincenzo Triventi, on Flickr

ImageIMG_3064 by Vincenzo Triventi, on Flickr

ImageIMG_3065 by Vincenzo Triventi, on Flickr

ImageIMG_3066 by Vincenzo Triventi, on Flickr

ImageIMG_3067 by Vincenzo Triventi, on Flickr

ImageIMG_3069 by Vincenzo Triventi, on Flickr

Dual
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Re: Yokomo MX-4 SSG Special

Post by Dual »

Next up is the installation of the front shock tower, I-arm brace and front suspension. No issues during installation and it is starting to look like an off-road buggy now. The Team Suzuki aluminium steering parts work very well and imo, look good against the silver surface material.

ImageIMG_3072 by Vincenzo Triventi, on Flickr

ImageIMG_3075 by Vincenzo Triventi, on Flickr

ImageIMG_3076 by Vincenzo Triventi, on Flickr

ImageIMG_3077 by Vincenzo Triventi, on Flickr

ImageIMG_3078 by Vincenzo Triventi, on Flickr

ImageIMG_3082 by Vincenzo Triventi, on Flickr

Dual
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Re: Yokomo MX-4 SSG Special

Post by Dual »

Rear shock tower and anti-roll bar ready to be installed onto the chassis.

ImageIMG_3084 by Vincenzo Triventi, on Flickr

Rear shock tower, long wheel base conversion kit, anti-roll bar and rear suspension installed onto chassis. The ZS-LWC long wheel base conversion kit was a popular option part for the Yokomo MR4-BC (came standard on the MR4-BC Special) as it extended the wheelbase by approximately 6mm and added some much needed stability over the standard length 'touring car' chassis that the MR-4BC used.

ImageIMG_3087 by Vincenzo Triventi, on Flickr

ImageIMG_3086 by Vincenzo Triventi, on Flickr

ImageIMG_3088 by Vincenzo Triventi, on Flickr

ImageIMG_3089 by Vincenzo Triventi, on Flickr

ImageIMG_3090 by Vincenzo Triventi, on Flickr

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Re: Yokomo MX-4 SSG Special

Post by Lurker »

Great build! Thank you for documenting it so well.

Dual
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Re: Yokomo MX-4 SSG Special

Post by Dual »

Lurker wrote: Sat Sep 05, 2020 4:03 pm Great build! Thank you for documenting it so well.
Thanks mate. Glad you you are enjoying the build.

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Re: Yokomo MX-4 SSG Special

Post by Dual »

Last pieces to be installed apart from the rims, tires, body, wing and undertray. The shocks are from the Yokomo MR4-BC Special and are wonderful units. I am quite familiar with these style of Yokomo shocks as I have built and rebuilt the touring car versions many times over the years. The bleed screw on the shock cap makes controlling equal compression and rebound among all 4 shocks effortless. I added Yokomo titanium nitride shock shafts, Rayspeed o-rings and Rayspeed aluminium spring cups for a very smooth final shock assembly. The hubs are again from the Yokomo MR4-BC Special and although quite light in weight, they do require specific rims which will only mount on these hubs.

I am not sure what paint design I will be incorporating for this build but I have always liked Atsushi Hara's design. I will see how I go. I have a set of the Yokomo TR-20 Foam Tires already mounted on the specific BC Special Rims and once I have sorted the paint for the body, wing and undertray, I will post some photos of the completed machine.

Hope you enjoy the 'almost complete' Yokomo MX-4 SSG Special-

ImageIMG_3094 by Vincenzo Triventi, on Flickr

ImageIMG_3096 by Vincenzo Triventi, on Flickr

ImageIMG_3097 by Vincenzo Triventi, on Flickr

ImageIMG_3098 by Vincenzo Triventi, on Flickr

ImageIMG_3100 by Vincenzo Triventi, on Flickr

ImageIMG_3102 by Vincenzo Triventi, on Flickr

ImageIMG_3104 by Vincenzo Triventi, on Flickr

ImageIMG_3105 by Vincenzo Triventi, on Flickr

ImageIMG_3107 by Vincenzo Triventi, on Flickr

ImageIMG_3108 by Vincenzo Triventi, on Flickr

ImageIMG_3103 by Vincenzo Triventi, on Flickr

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DennisM
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Re: Yokomo MX-4 SSG Special

Post by DennisM »

It´s so nice, one can almost forget/forgive that it´s shaft driven 8)
Edit - It´s belt driven! Now I really like it a lot :-)
Gone fishing

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Alex B
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Re: Yokomo MX-4 SSG Special

Post by Alex B »

Awesome build Dual, just a quick question relating to the LWB conversion. What parts are actually used to allow for the conversion? I've studied the pics and can't quite understand how it works.
:shock:

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Re: Yokomo MX-4 SSG Special

Post by RS Chris »

Nice build. Really wish I had held on to my MX4.
Current:RC10T, T3 FT, GT Blue Tub, GT FT, GT2 FT, GT5, RC28, SC28, Micro RS4.

Previous:B2, B3, B3 FT, 10T pink chassis, GT FT, TC3, TC3 FT, RS4MT
Tamiya TA02, Thunder Tiger TS4N pro, Kyosho VoneR, Emaxx, MX4, MP 7.5, 7.5 Kanai.

Dual
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Re: Yokomo MX-4 SSG Special

Post by Dual »

Alex B wrote: Tue Nov 03, 2020 3:53 pm Awesome build Dual, just a quick question relating to the LWB conversion. What parts are actually used to allow for the conversion? I've studied the pics and can't quite understand how it works.
Hey Alex, happy that you like the build :D . The ZS-LWP Long Wheelbase Conversion Kit is based on moving the rear A-arms 6mm further back on the chassis. This is accomplished with the rear arm mounts being modified by having material machined off the front portion of the mounts thus allowing the a-arms to be mounted further back compared to the standard MR4-BC. This creates a gap which is made up with a 6mm spacer on the rear portion of the mounts. Quite a simple solution to the issues that the standard MR4-BC suffered from. The kit also uses different length hinge-pins, the rear portion of the bulkhead has also been modified/machined to allow for the altered length of the hinge-pins and the the whole assembly is tied together by an aluminium brace that is screwed onto the the rear bulkhead.
RS Chris wrote: Tue Nov 03, 2020 10:26 pm Nice build. Really wish I had held on to my MX4.
Cheers Chris. The MX-4 can still be found for a good price. Just need a little patience :wink:

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Alex B
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Re: Yokomo MX-4 SSG Special

Post by Alex B »

Hey Alex, happy that you like the build :D . The ZS-LWP Long Wheelbase Conversion Kit is based on moving the rear A-arms 6mm further back on the chassis. This is accomplished with the rear arm mounts being modified by having material machined off the front portion of the mounts thus allowing the a-arms to be mounted further back compared to the standard MR4-BC. This creates a gap which is made up with a 6mm spacer on the rear portion of the mounts. Quite a simple solution to the issues that the standard MR4-BC suffered from. The kit also uses different length hinge-pins, the rear portion of the bulkhead has also been modified/machined to allow for the altered length of the hinge-pins and the the whole assembly is tied together by an aluminium brace that is screwed onto the the rear bulkhead.



Thanks mate very helpful, I just picked up a MR4-BC after not doing anything Yokomo related since my WCS Build, doubt I'll get it to your standard but I have a few mods inline to bring it up a few notches. One other question is there a part number for the spacers you used to mount the MX-4 style shock tower and camber link?
:shock:

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Re: Yokomo MX-4 SSG Special

Post by Dual »

Thanks mate very helpful, I just picked up a MR4-BC after not doing anything Yokomo related since my WCS Build, doubt I'll get it to your standard but I have a few mods inline to bring it up a few notches. One other question is there a part number for the spacers you used to mount the MX-4 style shock tower and camber link?
I remember your WCS quite well 8) . Beautiful build of a rather special model. The standoff spacers are Iflight items. They are for their drones but can be used in any application. Length is M3 x 15mm

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