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SQC049's Scale FJ Cruiser Ascender Build

sqc049

Newbie
Joined
Oct 14, 2014
Messages
6
Location
Long Island, NY
Hey guys, new to this forum and new to crawling but not RC. A little about me before I get into pictures and descriptions. I've been an avid off road racer for years, I've done pretty well for myself and never really ventured away from electric and some nitro off road racing. I never really paid much attention to rock crawling, even going so far as to mock it because of how slow they are.

That all changed a couple of weeks ago. I was at the J Concepts Fall Nationals at RC Excitement in Massachusetts. This race had huge attendance, so much so that there was hours in between heats. RCE has an awesome rock crawling track out back. So during one of my many walks outside to get some air, I was watching some guys crawl. A few of them were kind enough to let me try their rigs and I was hooked. I immediately went into the hobby shop to look for a crawler of my own. At this point I still didn't know anything about scale crawling or much about this segment of the hobby at all.

After looking at some RTR trucks and some kits, the racer in me took over and I decided to pick up the K5 Blazer Ascender kit. I went back to the pits and started to build my new truck. I also picked up an RC4wd 35T brushed motor and cheap Dynamite speed control while I was in the shop. I'm going to use some of my race shorties for batteries and a Futaba HV servo for steering out of my nitro buggy. Ultimately I'd like to upgrade to a Tekin FX-R down the road, but this setup will work to get me going.

I built the kit per the manual with 314mm wheelbase and mounted up my electronics, I just need to wire up the speedo and change the connector to get it running. This was a nice build with no issues other than some missing screws which I was able to source from my spare hardware.

Here she is all built out of the box:


Once I got home from Massachusetts, I started doing a lot of research and really got into the idea of a scale build. I have some experience in static models so this appealed to me. I also own a 2013 FJ Cruiser, so my own truck will serve as my inspiration for this build up.

Here is my muse:


I'm going to build this truck not how my FJC currently sits, but how I would build it if I had unlimited funds. I've always imagined this truck as an overland vehicle, capable of getting in and out of the wilderness and being able to spend a few days there if need be.

The first order of business was finding a body. After doing some research I decided to go ahead and order the Tamiya FJC body. Based on the dimensions of this body, I knew I would have to rebuild the truck to the shortest wheelbase possible and probably have to narrow the track width as well.

I also decided to ditch the 1.9 wheels and tires that come with truck. They looked way to big and wouldn't fit under the body properly. I ordered a set of 1.55 black steelie beadlocks from RC4wd and a set of 1.55 Rock Crusher tires. This should give a much more scale appearance to the truck.

The body showed up on Friday and I got straight to work.

Here is the Tamiya FJC next to the stock Blazer body:



Here is the FJC body on the chassis built at 314mm and with the 1.9 wheels and tires:


You can see in the photo the truck is way too long and tires are way out of scale.

Yesterday I ripped the chassis down and rebuilt it at the shortest wheelbase available. Here is the chassis shortened up:



Here she is with the 1.55s mounted up:



And with the 1.55s and body mocked up. The length is just about perfect:




The next step will be narrowing the track width. The shots below show how wide the truck is in relation to the body. I probably won't get a chance to work on the truck again until tomorrow or Tuesday, but I'll post an update once she is narrowed up and sitting properly. After that I will get the body painted up and mounted and then start on the scale aspect of the body build. This will be a bit of process for me as I'm learning as I go, but looking forward to this build.




Thanks for looking guys, hope this wasn't to long winded.

-Andrew
 
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Great start so far, the adjustability of this chassis is what sets this kit apart from the competition for sure. Brings out the creative juices in us for sure! Will follow this as i'd like to see how it looks and performs after the track width adjustment. Color?
 
Great start so far, the adjustability of this chassis is what sets this kit apart from the competition for sure. Brings out the creative juices in us for sure! Will follow this as i'd like to see how it looks and performs after the track width adjustment. Color?

It's going to be Toyota Quicksand, just like my 1:1.
 
I got down to shortening the track width today. I started with the front end as I figured this would be the most difficult to complete. All in all, it was a fairly painless process. Took me about an hour and a half start to finish, with taking some pictures along the way. I ended up taking 7mm off of each side to get it as narrow as possible.

I started by taking the axle down to just the housing.


Then I took my measurements, marked my new hole location and lopped off 7mm from each side using my dremel and a cutoff wheel.

One side cut:


Both sides done:


Here I was test fitting to see how everything lined up before drilling my new holes. I did have to remove a little bit of material around the counter sunk hole where the unused screw would go through in order for it to fit behind mounting point for the shock and lower link. No big deal here, just hit it with my file to take some material off:


Here the axle is with new holes drilled and screws attached:


I also drilled two holes on the underside of the axle and secured them with a set screw just to add a little more security, I was happy with using just one screw.


After that is was just a matter of shortening up all the links based on my 7mm per side reduction.

Before:

After:


Here is the front end all finished up and back on the truck:


The only thing left to do is shorten the steering link. Rather then cut down the factory link I think I'm going to order up one of these from RC4WD for a little scale realism. I think this will add a cool look:


The front end narrowed and rear end still at factory width:


With the body on it has the exact look I was going for:




I'm taking a short break right now and will get back to it in a little while to get the rear end taken care of. My paint and supplies are scheduled to be delivered today so once I get the mechanical modifications taken care of, I can start on the body.

More later...
 
Liking the narrow axles, but I'm wondering about the affect this has on the steering throw. One thing I like about the Ascender is the great steering. Since you've moved the wheels/tires in, does anything rub?
 
Liking the narrow axles, but I'm wondering about the affect this has on the steering throw. One thing I like about the Ascender is the great steering. Since you've moved the wheels/tires in, does anything rub?

No negative effects on the steering throw. It gets awfully close to shock spring at the fullest range of throw, but I haven't set end points yet as I'm yet to shorten the steering link. I took a couple of quick pics for you just now. Not the best pictures, but took them real quick. Haven't had a chance to get to the work on the rear of my rig yet today.




 
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