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Old 01-09-2019, 08:48 AM   #326 (permalink)
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One of my favorite buggy builds for sure, love seeing updates.
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Old 01-09-2019, 10:16 AM   #327 (permalink)
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Looks Good Scott. Are you going to make opening weekend at K2?
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Old 01-09-2019, 10:50 PM   #328 (permalink)
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Originally Posted by mccustomize View Post
One of my favorite buggy builds for sure, love seeing updates.
Thanks man! I hope to have some better wheeling videos soon.

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Looks Good Scott. Are you going to make opening weekend at K2?
Unfortunately I have a prior family commitment...I cannot believe I haven’t had this thing out to K2 yet!
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Old 01-12-2019, 06:52 PM   #329 (permalink)
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Love the build, if it wasn't for being street legal I would have also went the BFR route. Anyways, based on the suspension videos it doesn't look like you're getting into the bumpstops much but wondering if you've played with the pressures in them at all? Front or rear?
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Old 01-13-2019, 08:17 PM   #330 (permalink)
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Love the build, if it wasn't for being street legal I would have also went the BFR route. Anyways, based on the suspension videos it doesn't look like you're getting into the bumpstops much but wondering if you've played with the pressures in them at all? Front or rear?

In that video I only get into the rear bumps twice, mainly due to just bombing around the pasture and lots of travel.

I have the bumps at 250 I think? Maybe 300. I feel the front bumps could use some pressure; the rear seem to work great. I need to invest in a no-loss chuck before we get all scientific and all
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Old 01-14-2019, 11:29 AM   #331 (permalink)
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In that video I only get into the rear bumps twice, mainly due to just bombing around the pasture and lots of travel.

I have the bumps at 250 I think? Maybe 300. I feel the front bumps could use some pressure; the rear seem to work great. I need to invest in a no-loss chuck before we get all scientific and all
You're not kidding about the no-loss chuck, I did not figure it would be THAT sensitive to a regular chuck! Took me a couple go-arounds to figure out why the pressure kept dropping 40-50psi between checks!
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Old 01-14-2019, 11:55 AM   #332 (permalink)
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You're not kidding about the no-loss chuck, I did not figure it would be THAT sensitive to a regular chuck! Took me a couple go-arounds to figure out why the pressure kept dropping 40-50psi between checks!
I guess now that you brought it up I need to buy one...I filled all of my suspension without one

Here is a long video of my and a buddy tearing through a local Offroad park. Some jumps and high speed stuff around the 8-9 minute mark.
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Old 03-13-2019, 04:44 PM   #333 (permalink)
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Update:

The Ruffstuff trailing arms are just too large/deep for this car and I have been getting hung up a bit too much on them. They are a good product and went together well when I welded them, but just too large and bulky.

I had left +1.5” of shock shaft showing at full compression when I originally set the rear up. I did this thinking I might get into that portion of travel when the car was articulating. The bump cans are inboard of the arms/shocks and I assumed incorrectly that this last portion of travel would be useable.

In come the straight trailing arms. I ordered up some 2.5” OD .25w chromoly tubing, some solid 2” 7075 bar, and some TMR anti-wobble joints.

Since the OD of the aluminum was a few thousandths larger than the ID of the chromoly I had to get creative. I don’t own a lathe, and it is like pulling teeth in my town to get a one off item machined.

Further, since I didn’t want to sacrifice up-travel, I decided to notch the tubing to set the shock eye lower “into” the arm. Doing so allowed my original setup to utilize the last 1.5” of travel I had left on the table.

Super strong; super low profile. I’ll let the pictures do the talking from here.
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Old 03-13-2019, 04:47 PM   #334 (permalink)
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Old 03-13-2019, 04:50 PM   #335 (permalink)
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Old 03-13-2019, 07:03 PM   #336 (permalink)
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Digging that notch idea.
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Old 03-14-2019, 08:54 AM   #337 (permalink)
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sooooo how did you get the aluminum in the steel? the look like they would not roll as much with the notch, compared to other over the center trailing arms.
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Old 03-14-2019, 08:56 AM   #338 (permalink)
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Your arms are very cool !

I went with the BKOR trailing arm kit and let Tim modify the chassis side to fit the big anti-wobble cup.

Quote:
Originally Posted by scottapher View Post
I had left +1.5” of shock shaft showing at full compression when I originally set the rear up. I did this thinking I might get into that portion of travel when the car was articulating. The bump cans are inboard of the arms/shocks and I assumed incorrectly that this last portion of travel would be useable.
I'm interested in your feedback on this. I would like to keep the bumpstops inboarded, like you, and was wondering how much bump travel do the shock really have after the bumps are compressed.

Here is what I'm envisioning :



Bump stops in red, bump pad in blue, inboarded (about 6-8") from the heim which is the pivot point.

This is full bump :


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Old 03-14-2019, 08:50 PM   #339 (permalink)
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sooooo how did you get the aluminum in the steel? the look like they would not roll as much with the notch, compared to other over the center trailing arms.
I used a belt sander, and jigged it up all fancy like and used a drill to spin the aluminum while I took some material off. I used a micrometer to intermittently check where I was at. Then I beat the aluminum into the steel with some time and muscle.
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Old 03-14-2019, 08:54 PM   #340 (permalink)
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I'm interested in your feedback on this. I would like to keep the bumpstops inboarded, like you, and was wondering how much bump travel do the shock really have after the bumps are compressed.
Right now, there are maybe a few c-hairs before the rubber pad around the shock shaft hits the shock body. I had 1.5” of shaft showing before and it was unused travel.
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Old 03-14-2019, 09:50 PM   #341 (permalink)
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Great and simple idea to the trailing arms...you should do a kit and sell...it's smart and simple and can be done easily in the home garage or at the pro shops...
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Old 03-14-2019, 10:38 PM   #342 (permalink)
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Great and simple idea to the trailing arms...you should do a kit and sell...it's smart and simple and can be done easily in the home garage or at the pro shops...
I think TMR or Jake Burkey (spelling?) sell something nearly identical without the notch’s, chromoly tubing, or as low of a shock mount. Honestly, these were born out of necessity; time will tell how they hold up.
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Old 03-15-2019, 09:05 AM   #343 (permalink)
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Right now, there are maybe a few c-hairs before the rubber pad around the shock shaft hits the shock body. I had 1.5” of shaft showing before and it was unused travel.
Thank you for the info.
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Old 03-18-2019, 07:30 AM   #344 (permalink)
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The new straight trailing arms were a BIG improvement. Next step is upgrading the rubber this thing rides on.
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Old 03-18-2019, 12:25 PM   #345 (permalink)
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She sounds mean, I can't wait to see it with some stickies.
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Old 03-25-2019, 08:43 AM   #346 (permalink)
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She sounds mean, I can't wait to see it with some stickies.
Me either, I am impatient and pulled the trigger on some BFG KR3-S tires this past week.

I should have gone comp compound a long time ago! Here is a short video going up Royal Gorge at Hidden Falls. Ran it a few times where I have been previously denied.

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Old 03-25-2019, 09:55 AM   #347 (permalink)
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Big baller!!
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Old 03-25-2019, 10:08 AM   #348 (permalink)
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Big baller!!
I can't let you cool kids have ALL the fun
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Old 03-25-2019, 10:18 AM   #349 (permalink)
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Curious how they do in mud?
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Old 03-25-2019, 10:44 AM   #350 (permalink)
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Curious how they do in mud?
I try to avoid mud like the plague.

With that said they cleaned out well when I did find some wet spots at the park. The KR3-S is a tad taller than my 40" Toyos when both were unmounted; a good bit lighter as well at ~86 lbs a tire vs ~104 lbs for the toyo.

The Ultra4 race this past weekend was a mudfest, looks like most teams were running these tires or a Trep.
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