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Crawler / climber discussions

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Old 02-06-2007, 09:46 PM
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Default Crawler / climber discussions

Hi all, let's discuss crawler / climber here... can u post some photos of your rigs. thanks. I'm particularly interested in this category.
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Old 02-06-2007, 10:39 PM
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Which RC shop carry crawler/climber models?
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Old 02-06-2007, 10:41 PM
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the correct thread at last.
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Old 02-06-2007, 11:58 PM
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Frost,
Some of our members have built some custom trucks. Speed Demon has a PTI Goliath and has custom built a stick-chassis (Buatan Malaysia version) crawler. Bargump and Uthaya has some pics of their trucks too. And Kei Seng has been busy with a scratch-built scale-truck project with a ladder frame and leaf springs. Quite a few others too. The photos are all at the MT thread at http://www.rctech.net/forum/showthre...&page=36&pp=30. But it's great we have a crawler thread.

devious,
Tamiya Underground has the TLT-1 Max Climber. Saw it in their window. I think it's RM999 retail. They also have the new Ford F350 High Lift. Forgot the price. For something tiny, RC Pitstop (inside Tamiya Underground, ask for Terrence) used to have a GS 1/20 scale mini SUT. Needs a little custom modding to work as a crawler (have to pandai-pandai install an airplane gear-reduction unit, can get from Nam Lee) to get the slow-speed torque you need out of the tiny motor. Haven't done it myself but I know it can be done.
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Old 02-07-2007, 12:11 AM
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i tot i saw that Mini SUT some time back.. maybe today I will drop by again.

can post some photos guys.. then discuss from there. I plan to build one... soon after CNY
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Old 02-07-2007, 01:30 AM
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http://www.thecrawlerstore.com/nn.html

but I still need to source for motor,esc,servo, wheels for the NN

RTR is USD 1114

Thanks Sim600, any other place carry these crawlers? The NN looks DIY'ble but I lack the tools not time or patience to give it a go .

The TLT looks ....... fugly
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Old 02-07-2007, 01:51 AM
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Not onli need to have reduction gear but you'll need to lock the axle diffs, else it will unload when crawling.
Curiously, i think that the TLT n Ford hi-lift dun allow u to lock the diffs. But the old old Tamiya unibody 4X4 chassis ,eg, Jeep, Mu,Pajero ,etc do have the locking device to lock the diff. TU has got the Volkswagen Tuareg right now.

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Old 02-07-2007, 01:55 AM
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to lock the diffs means what? both side wheels no slipping? unload mean?
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Old 02-07-2007, 01:57 AM
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lock diff = no differential=both wheels turns the same rotation.

Unload = one wheel turns freely when it's off traction = no movement on that end of the crawler .
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Old 02-07-2007, 02:10 AM
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whoa i saw u guys crawler DIY photos.. how u get to make chassis like that.. I no tools to cut & bend and precision drilling what not... to join up the parts.

impressed2

I was really interested in the TXT-1 until I saw the mechanical speed controller that reminded me of my bitter Dagger which i wanted to make into a backyard crawler (i think now is called Double Blaze, the transmission is good but bulky, and chassis plastics are crap, and body post melted under sun)
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Old 02-07-2007, 02:11 AM
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Frost

If you dont lock the diff, the tire with the least traction will spin (which is not what u want).
Imagine that you (well, ur truck) is crawling over rocks n 1 wheel goes up in the air. It is this wheel that will spin freely if you press ur throttle. All the other wheels on the rock will not rotate, thus u are stuck on the rocks.

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Old 02-07-2007, 02:12 AM
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Hi See Liang,
You're right. Definitely lock the diffs, at least for either the front or rear. You get very little steering if you lock both though, so trial and error lor. I think I read somewhere that the F350 has a way of locking the diffs. Lemme see. If there's no other way, then whip out the epoxy lor (the overnight stuff is stronger than the 5-minute epoxy).

Devious, wow, you straight away go high-end stuff, the NN! TLT-1 is ugly to start with but most people stretch it out to about 11 inches wheelbase and it looks very good after that. It's a lot of work with a lot of parts though.
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Old 02-07-2007, 02:15 AM
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Here we go... F-350 online build.

http://forums.radiocontrolzone.com/s...8&page=2&pp=25

Insert a pin somewhere into the bevel gears to keep them from moving. Sounds like stopping a bicycle by throwing a stick into the spokes. Haha. Not sure how secure this is but who knows.
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Old 02-07-2007, 02:32 AM
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Oh ya, in case you haven't been there. The best forum for R/C crawlers are at http://www.rccrawler.com/forum/
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Old 02-07-2007, 05:16 AM
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guys... if I know and only if I know that you all is gonna start crawling... I wouldn't have sold my mean machine.. dang!!
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