Crawl Spec XR10...Next Chapter - T1E SNIPER

[WheelinKing]

Your stuff is looking great Steven . . ! Are we going to see any of these items hit the market after you finish production and testing?

[SVEN]

Originally Posted by old_dog

Great job Steven. Have you thought about mounting your battery where the servo use to be? Looks like you have a nice flat location for it.

Thanks Kevin! Yep, that's the plan. I am currently reworking the servo mount to include battery strap slots.

Originally Posted by WheelinKing

Your stuff is looking great Steven . . ! Are we going to see any of these items hit the market after you finish production and testing?

Thanks! I do plan on offering some stuff once I get the kinks ironed out.

[murderface]

the stuff you do with delrin hurts my brain lol i mean you made what is probably one of the best losi micro chasis's and wht ive seen from your xr build so far youve got somethin good goin here too

[SVEN]

Originally Posted by murderface

the stuff you do with delrin hurts my brain lol i mean you made what is probably one of the best losi micro chasis's and wht ive seen from your xr build so far youve got somethin good goin here too

Thanks! Much appreciated.

-------


I really didn't want to do a new chassis, as the stock one works great. But, The front shock location forced my hand.

Ready to run with wheels, tires, and electronics it currently weighs in at 4lbs 8.5oz.

[murderface]

I'd have to see that thing in person to ever figure out exactly whats goin on. Theres soo much delrin there, i cant tell where one part ends and another begins.

have you noticed any advantges to having your servo back behind the motor like that?

[Harvo]

Nice Steven. This one has really turned into a ... wait for it


wait for it...











XR-SVEN .

OK... seriously... It is almost an entire pound lighter than mine. To what would you credit all the weight loss? Your chassis is tiny, but wow.

And will you have to increase the spring rates up front to compensate for the new shock position?

I'm looking forward watching it run, but I noticed you haven't signed up for the comp at Northshore yet... you coming?

[SVEN]

Originally Posted by murderface

I'd have to see that thing in person to ever figure out exactly whats goin on. Theres soo much delrin there, i cant tell where one part ends and another begins.

have you noticed any advantges to having your servo back behind the motor like that?

I have not run the truck enough to know for sure, but the predicted advantages are lower center of gravity and allowing me to move my battery pack to the front axle. The battery's weight shifted to the front, rather than in the chassis will allow me to use less weight in the wheels.

Originally Posted by Harvo

Nice Steven. This one has really turned into a ... wait for it


wait for it...

XR-SVEN .

OK... seriously... It is almost an entire pound lighter than mine. To what would you credit all the weight loss? Your chassis is tiny, but wow.

And will you have to increase the spring rates up front to compensate for the new shock position?

I'm looking forward watching it run, but I noticed you haven't signed up for the comp at Northshore yet... you coming?

Haha, too funny.

I have just run it around with my old electronics set up and did some tuning to the geometry during initial designs. Like at first I had the lowers mounted to the shock mount on the axle. This did not provide enough separation from the upper link mounting on the axle and the axle would wrap badly. I wanted to use that upper hole so that I could use Revo rod ends without modifying them. In the lower hole the Revo end would have to be modified to fit. Now I am just using the stock ends drilled out to 4mm and using the stock lower hole for the lower links. It now does not wrap, but allows the shocks to do the work.

Yes, I will have to tune the shocks as they are currently much softer than I would like. And really, not so much too soft, but rather springy feeling. Could just be that they don't have much oil in them or need some thicker oil/different piston.

The weight is likely due to the lack of weight in the SLW's on all four corners. I am going to start out with nothing in the wheels and add the Little Harry slugs as needed.

[SVEN]

Just got the electronics tray cut out....

I didn't realize how stout the base piece would be, it can stand to lose a good bit of material to lighten it up.

[SVEN]

Electronics tray put together....

Now I get to have some fun soldering, yea!

[JeremyH]

Holy crap Sven! That electronics mount is NICE!!

[Jeepkid]

As I type your mind is turning, thinking up more awsome stuff to make. This build is a 100 out of a 1 to 10

[SVEN]

Originally Posted by JeremyH

Holy crap Sven! That electronics mount is NICE!!

Originally Posted by Jeepkid

As I type your mind is turning, thinking up more awsome stuff to make. This build is a 100 out of a 1 to 10

Thanks guys!

The tray is a first for me, so right now I am trying to figure out how the heck I am going to make the wiring look as neat as it deserves to be. Anyone who has seen my comp rigs knows that my electronics are typically bound together with a velcro strap and stuffed into the chassis, and on a good day they will be zip-tied down so they don't flop around. So, this step may take me a while.

[aaugman]

Looking good,

I always start out with a nice clean set up but after one glitch it ends up looking like crap. LOL

[redbaron]

Originally Posted by JeremyH

Holy crap Sven! That electronics mount is NICE!!

I agree Sven!! Very nice!!

[ittybitty]

You're gonna love the MMP's! I really like how you designed the strap to use the cooling fins on them to hold everything in place!

[stelerzman]

Originally Posted by SVEN

Lower Links...

very nice work, how and where did you come up with the links?

[stelerzman]

Originally Posted by SVEN

Got it build yet?





Thanks! I have no problem with anyone using my ideas (that's what this forum is for, to share ideas), just as long as you don't start selling them .

I don't have any DH slugs to sell. I do have a couple extras that I can loan you if we don't get rained out of the next comp.

------------------------

Well Saturday's comp was canceled, so I had a bit of free time to work on the XR10. I was able to knock out the front links that I have been wanting to try, static rear slug holders, and an axle mounted battery tray. Also made a new set of rear lower links that put me at 3 3/8 under the belly.

Still need to do a little more work on the battery tray, but this is what it will look like. The next version will be lower, so that the battery rests on the top of the gear case. The battery is a MaxAmps 860mah 3-cell Lipo.





The plate is held on with a clamp.





New Front lower links are similar to my 2 piece high clearance links, except these place the shock mount out of the tires way.





Full lock with 1" V4 SLW and 225 hubs.





Static wheel weight slug holders for the Vanquish LH slugs. I made them for the DH slugs as well, but the LH keeps it up out of the way more and I don't think I will need to add more weight to the rear than the LH's can provide.



Profile with .7 V4 SLW's and 350 hubs.






Even though I was looking forward to the comp, I was happy to have some time to crank out a couple of things floating around in my head.

HOLY SHIT, you are amazing. ? what is you're IQ? you are blowing my mind with the things you are creating. damn good work..

[JustinThyme]

I didn't read the whole thread, so I pray I'm not duplicating a previous comment. But I doubt it.

I was surprised by your title... "crawl spec XR-10".

Well, um, it's a crawler so it IS crawl spec!! Any after market parts which are specifically for the XR are "crawl spec" too. The only things where you have some leeway regarding crawl spec would be motor, ESC and servo.

I didn't know if you meant "competition spec", as that is another matter entirely.

Good job on the truck! I really like the XR.

[SVEN]

Originally Posted by stelerzman

very nice work, how and where did you come up with the links?

Thanks, I wanted 3D links, but I can only cut in 2D. Thus these links were born .

Originally Posted by stelerzman

HOLY SHIT, you are amazing. ? what is you're IQ? you are blowing my mind with the things you are creating. damn good work..

Thanks. I dunno. Thank you.

Originally Posted by JustinThyme

Well, um, it's a crawler so it IS crawl spec!! Any after market parts which are specifically for the XR are "crawl spec" too.

Good job on the truck! I really like the XR.

Yes.

Thank you!


My Blue Star = Crawl Spec

[SVEN]

Soooo, I won't mention any names here, but someone screwed up the front link length measurement and made the truck 1/2" too short. Stupid mistake ended up costing me another 6 hours of design and machine setup/runtime.

I had to redesign the upper links, lower links, and the chassis. While I was at it I made a couple of adjustments to make my wiring job a little easier (still haven't gotten to that yet).

Here is the new side plate with a couple of additions...

Any wild guesses as to what these changes might be for?