Tamiya TRF 801XT Build Thread
10-21-2010, 12:04 PM
#51
RE: Tamiya TRF 801XT Build Thread
ORIGINAL: Eman77
You might be right - can you link to that conversion for reference? Should be an interesting comparison.
Here's a couple shots of the front hubs/carriers/whatchacallits. Seem pretty durable!
You might be right - can you link to that conversion for reference? Should be an interesting comparison.
Here's a couple shots of the front hubs/carriers/whatchacallits. Seem pretty durable!
10-21-2010, 01:34 PM
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RE: Tamiya TRF 801XT Build Thread
Well, the buggy ones are nice and shiny - but both are metal. Just not sure what the xt ones are made of (buggy ones are blue, so anodized alum I imagine). Maybe the size/shape difference (if any?) makes it handle better.
Anyway, I'll just be bashing, so I'm fine with stock. I think I will take the advice of some guys here though, and go with the narrower buggy/truggy type tires instead of big fat MT ones though, so it's a bit more nimble.
In other news, the electric conversion kit has been shipped today - should get it by Monday. Looking forward to that! You heard about yours yet?
Anyway, I'll just be bashing, so I'm fine with stock. I think I will take the advice of some guys here though, and go with the narrower buggy/truggy type tires instead of big fat MT ones though, so it's a bit more nimble.
In other news, the electric conversion kit has been shipped today - should get it by Monday. Looking forward to that! You heard about yours yet?
10-21-2010, 02:52 PM
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RE: Tamiya TRF 801XT Build Thread
I like the fact that there are metal clamps around the input shaft bearing, the one that goes into the diff housing. My E-Savage had issues where, under big power (and traction), that housing around the bearing would flex under torque, causing the input pinion to skip against the diff ring gear. It was nasty sounding. This should take care of that.
10-21-2010, 03:23 PM
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RE: Tamiya TRF 801XT Build Thread
The buggy was designed after the truggy has come out. A lot of the improvements were included in stock form. For example better knuckles (durability + handling,) angled engine mount, etc. There are actually a significant amount of different parts between the cars. Unfortunately this means annoyances like the same bump box setup won’t work for both cars…..
As for that diff ring, it’s very similar in design to the TNX monster truck diff ring. Unfortunately it is a cast piece, and quite a few people have reported cracked parts. A new machined part is out now as an upgrade.
As for that diff ring, it’s very similar in design to the TNX monster truck diff ring. Unfortunately it is a cast piece, and quite a few people have reported cracked parts. A new machined part is out now as an upgrade.
10-21-2010, 04:32 PM
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RE: Tamiya TRF 801XT Build Thread
Interesting info. Sad outdated TRF 801XT w/out updated parts is sad. Very sad. 
I guess if anything breaks, I know where to start hunting for upgrades.
I guess if anything breaks, I know where to start hunting for upgrades.
10-22-2010, 11:20 PM
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RE: Tamiya TRF 801XT Build Thread
Nice to have all those upgrades!
Onward on the build: Here's the center differential being put together. Very, very similar to front/rear diffs. Truggies use center diffs, and not a transmission. I'm not sure why.
Onward on the build: Here's the center differential being put together. Very, very similar to front/rear diffs. Truggies use center diffs, and not a transmission. I'm not sure why.
10-22-2010, 11:24 PM
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RE: Tamiya TRF 801XT Build Thread
And here I am slapping the center diff on the chassis. Notice the motor plates I put on for no good reason, as well as the brake rotors (?) alongside the center diff. My electric conversion kit hasn't arrived yet, so I really have no clue what I'll be taking off, putting on here. Thus, my build will be a bit sketchy in those areas for now. I might just not do much more around the motor/center diff area, and just focus on other areas for now.
10-22-2010, 11:29 PM
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RE: Tamiya TRF 801XT Build Thread
Moving on to the shocks build for now. Here are most of the parts I'll be using, in the first pic. I thought I'd take a pic of all the parts I'd be using, but I goofed and didn't get them all - and you poor readers suffer. *tsk tsk*
Anyway, notice the rubber booties for the shocks to keep grit out of 'em, and the green slime I'll be using. Oooh yeah, green slime!
Second pic is the parts involved with building a single shock. Fun, fun!
Anyway, notice the rubber booties for the shocks to keep grit out of 'em, and the green slime I'll be using. Oooh yeah, green slime!
Second pic is the parts involved with building a single shock. Fun, fun!
10-22-2010, 11:34 PM
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RE: Tamiya TRF 801XT Build Thread
Remember e-clips when building shocks? They are the devil's work, slipping out of needle nose pliers and flying across the room amidst the loud swearing of the RC kit builder, not to be found until 6 months later when you're looking for a 1mm shim you dropped.
Alas, the TRF 801XT kit does NOT use e-clips in the shock build. The piston disc inside the shock body has a depression in it, and rests neatly on the shock shaft. A tiny screw (and tiny lock washer) hold it in place Ingenious! Why don't all shock kits do this? Sadistic !@#!@#!'s.
Alas, the TRF 801XT kit does NOT use e-clips in the shock build. The piston disc inside the shock body has a depression in it, and rests neatly on the shock shaft. A tiny screw (and tiny lock washer) hold it in place Ingenious! Why don't all shock kits do this? Sadistic !@#!@#!'s.
10-22-2010, 11:37 PM
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RE: Tamiya TRF 801XT Build Thread
And here is a shock comparison. Shown is a front Durga (DB01) shock compared to an 801XT front shock, and a few rears. The truggy shocks are massive in comparison. It's most impressive.
I show pics of a build front and rear 801XT shock without the rubber booty to cover the shock shaft, and one rear with the booty. Shock build was one of the easiest I've ever done.
I show pics of a build front and rear 801XT shock without the rubber booty to cover the shock shaft, and one rear with the booty. Shock build was one of the easiest I've ever done.
10-22-2010, 11:40 PM
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RE: Tamiya TRF 801XT Build Thread
Time to move on to the steering build I guess. After putting a few parts together, I found this interesting - the spring for the servo saver is pretty stout. Somehow I've got to thread that adjustable blue alum ring down over the blue alum tube by compressing that stout spring by hand while I try to engage the threads. Good luck!
10-22-2010, 11:42 PM
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RE: Tamiya TRF 801XT Build Thread
First pic is a scattering of steering parts involved.
Somehow, I Got R Done, and here is a second pic of the steering assembly put together, but not on the chassis yet. It's very smooth. Bearings FTW.
Somehow, I Got R Done, and here is a second pic of the steering assembly put together, but not on the chassis yet. It's very smooth. Bearings FTW.
10-23-2010, 01:21 PM
#65
RE: Tamiya TRF 801XT Build Thread
ORIGINAL: Eman77
Remember e-clips when building shocks? They are the devil's work, slipping out of needle nose pliers and flying across the room amidst the loud swearing of the RC kit builder, not to be found until 6 months later when you're looking for a 1mm shim you dropped.
Alas, the TRF 801XT kit does NOT use e-clips in the shock build. The piston disc inside the shock body has a depression in it, and rests neatly on the shock shaft. A tiny screw (and tiny lock washer) hold it in place Ingenious! Why don't all shock kits do this? Sadistic !@#!@#!'s.
Remember e-clips when building shocks? They are the devil's work, slipping out of needle nose pliers and flying across the room amidst the loud swearing of the RC kit builder, not to be found until 6 months later when you're looking for a 1mm shim you dropped.
Alas, the TRF 801XT kit does NOT use e-clips in the shock build. The piston disc inside the shock body has a depression in it, and rests neatly on the shock shaft. A tiny screw (and tiny lock washer) hold it in place Ingenious! Why don't all shock kits do this? Sadistic !@#!@#!'s.
Ive read a review that this screw backs out and you should add thread lock to it, I used tread lock when I rebuilt them.
10-24-2010, 05:37 AM
#67
RE: Tamiya TRF 801XT Build Thread
I received my conversion kit yesterday (the post man left it out by my garage[&:]) I wont steal your thread but you asked how far can you go on the build before you omit stuff for the conversion so this is what it should look like for the conversion
10-25-2010, 08:33 AM
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RE: Tamiya TRF 801XT Build Thread
Hey, no worries man - not stealing the thread at all. Don't hesitate to add good info!
So it looks like you don't really install much of anything on the chassis plate if you do the e-conversion. Cool - appreciate the pic. I think my kit should get here today, so will get rolling on it soon!
Thanks for the tip on the screw in the shock shaft. Since I'm already all set up w/oil and all, I'll just leave it and threadlock next time I do a rebuild, I think.
So it looks like you don't really install much of anything on the chassis plate if you do the e-conversion. Cool - appreciate the pic. I think my kit should get here today, so will get rolling on it soon!
Thanks for the tip on the screw in the shock shaft. Since I'm already all set up w/oil and all, I'll just leave it and threadlock next time I do a rebuild, I think.
........maybe............ I ordered a couple of pinions so I can have some options.
10-26-2010, 07:29 AM
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RE: Tamiya TRF 801XT Build Thread
Good deal, I think I have mod1 pinions lying around. I think you'll get a chance to run yours before mine, so let me know what gearing you settled on (and with what motor/battery combo, etc). Just for a reference point.
Also, could you provide a pic with your conversion kit installed? Want to be sure I'm doing it right. Got mine last night, and just started installing. Noticed the nice engraving on the motor mount/bearing carriers, but they face inward (toward the center diff) so you can't read them.
Anyway, a pic or two for Eman's peace of mind is appreciated.
Also, could you provide a pic with your conversion kit installed? Want to be sure I'm doing it right. Got mine last night, and just started installing. Noticed the nice engraving on the motor mount/bearing carriers, but they face inward (toward the center diff) so you can't read them.
Anyway, a pic or two for Eman's peace of mind is appreciated.