What have you done to your FMTV or LMTV today

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MrMikey4026

Member
56
32
18
Location
Eatonville Washington
The work is in progress. The fuel system on the 3116 is a mess. Like 28 steps to running the overhead with about 9,000 dollars in special tools.
I will fill in the dollars when they are known.
Mike
 

MrMikey4026

Member
56
32
18
Location
Eatonville Washington
Wow, that’s amazing. I can’t even find anyone to work on mine around here. I tell them I have a 3116 and they go ghost on me.
I probably would have had the same problem, but I manage a large truck fleet. I send them lots of other work to do.
They have an old guy (like me), that enjoys working on them. The LMTV has really good access compared to many other applications. They did not have to change the injector, just readjust the injector timing and tweak the rack settings. So, I really lucked out.
 

olly hondro

Member
696
16
18
Location
tucson AZ
Looking good, real good!

The harness bar is just roughed in for now. For those not following the build: The tubing shown connects to factory seat belt locations to provide attachment point for the 4 pt harnesses. It is not rollover protection, that is to be fabbed on the exterior.
 

Third From Texas

Active member
366
89
28
Location
Corpus Christi Texas
In the shop for "stuff"...
View attachment 793781
I don't think I have my old SCORE rule book on shoulder harness mount angles, but that certainly looks within the proper range.

From an engineering standpoint, a front impact is going to do it's best to pull the bar forward. I would add one additional brace on the side that runs perfectly horizontal forward to the "B" pillar (or ideally add one that angles down 90° from the upper forming a "V"). That would provide your front impact hold against the encountered forces. It looks like you may have put bends in the sides behind the seats where I'm talking about tapping into the main span, though.

Just tossing it out there. I know that you don't really plan to race it, but brakes, steering, and harnesses are the three things I always over-engineered on a car.

btw, your notching looks good. You doing that by hand or with a notcher or by hand?
 

olly hondro

Member
696
16
18
Location
tucson AZ
I don't think I have my old SCORE rule book on shoulder harness mount angles, but that certainly looks within the proper range.

From an engineering standpoint, a front impact is going to do it's best to pull the bar forward. I would add one additional brace on the side that runs perfectly horizontal forward to the "B" pillar (or ideally add one that angles down 90° from the upper forming a "V"). That would provide your front impact hold against the encountered forces. It looks like you may have put bends in the sides behind the seats where I'm talking about tapping into the main span, though.

Just tossing it out there. I know that you don't really plan to race it, but brakes, steering, and harnesses are the three things I always over-engineered on a car.

btw, your notching looks good. You doing that by hand or with a notcher or by hand?
The TruckTrial rulebook is silent on harness attachment, but yes, the angles are set according to harness manufacturer recommendations. We certainly were not going to attach to the floor like we see some do to get thru tech. There is some more gusseting going on, will update you when its complete.

A commercial notcher was used.

I agree with you: margin is my most favorite thing.

The most likely "event" scenario would be a flop over at less than 5 MPH, worst might be an endo while descending. I'm not convinced I have the cojones to put myself in those situations though.

Thank you for taking the time to author a thoughful reply, I appreciate it.
 
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