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#1
11-01-2010
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DB01 Front Arms
I seem to be an expert in breaking the front arms of the DB01.
I've tried kit, the high traction ones, and have 501X kit ones on the way. The question is, which ones are the strongest? And, do bent hinge pins break wishbones more readily? 
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#2
11-01-2010
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501X are the strongest. Bent hinge pins make them break easier. I have some 501X ones if yours are coming from Hing Hong and you want them sooner?
 G
__________________
Graham North http://www.atomic-carbon.co.uk https://www.facebook.com/atomiccarbon https://www.facebook.com/nortechracing 
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#3
11-01-2010
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I have broke one arm, but that was some serious hit... the DB01 ones are the strongest out there!
__________________
dragon paints : team tekin : fusion hobbies :SCHUMACHER RACING : Nuclear R/C for all my sticky and slippery stuff - if it needs gluing or lubing, Nuclear RC is the man!
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#5
11-01-2010
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The original db01 arms are not carbon reinforced. They should allow more flex and therefore be able to take more abuse. I may be wrong.
The high traction ones are also carbon reinforced, but not as much as the TRF501X ones of course.
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#6
11-01-2010
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The kit (DB-01) ones are dirt cheap and hard to break but the screw holes strip easier.
__________________
http://www.modrc.com
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#7
11-01-2010
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Fingers crossed I won't break the 501x arms with new pins then!
I've got some coming from Finland hopefully before Petit. Northy: pm me, you going too?
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#8
12-01-2010
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may seem like an odd question, but why would they make 3 types of the same arm?, i cant see it making economic sense, u have the plastic one for the db01, why not just list the 501x arms as an upgrade instead of making a specific db01 hi traction arm, unless theres something else im missing, anyway im not too worried, i have the high traction arms coming as spares, i dont break arms often running 17.5
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#9
12-01-2010
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Quote:
1st: trf501x arm. Vey strong, carbon reinforced 2nd: DB01 released, Tamiya use same mould to make a cheaper arm by using cheaper plastic material 3rd: Hopup high traction arm with less webbing and material, thus uses an amended or new mould itself (going tekkie I guess they have put inserts in the old mould to reduce the thickness of the arm in certain areas etc). They also change the plastic/carbon mix, but not sure if it's a third material or simply changed to the db01 material, someone who has both can say, my guess it's another new material! Just to confuse things, my DB01R had high traction arms, but the material looked like the old trf501x arms (eg more carbon), which make 4 types! No new part number though as far as I remember, so I'm guessing it's just a consistency issue between batches! In terms of strength, the old 501x arm was the strongest, but maybe the db01 arm used to flex instead of break making it effectively as good!? The high traction arm is much weaker, Tamiya themselves say not to use it except in high end racing because of this. Whether it really has more traction, and whether undamped flex in suspension arms is a good thing or not is another story.... 
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#11
12-01-2010
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The DB01R comes with the 54141 and 54142 high traction arms. There are "only" 3 types of arms. So Dave, you´re right. It is consistency issue between batches.
They are not good for "bashing", but works for racing. Team drivers used them at the euros. Seemed to work just fine. I used them last season on my 511 and they worked fine as long as I did´nt smash into things...  When you run into things the thin material of course snaps of easier than the thicker arms. Those who have tested the db01 arms for racing says that they are to soft. I haven´t tested them yet. Migs, I think your are right. The high traction arms should be lighter than the others. They have less material and therefore allow also more flex than the 501X arms. EDIT! A high traction front arm weigh 8,8 grams. A TRF501X front arm weigh 12,6 grams. Thats 43% more... A DB01 arms weigh 12,8 grams. Rear high traction arm weigh 9,8 grams and DB01 rear arm 12,4 grams. Thats 26% more. I have some pics of the arms at the bottom of this page: http://www.tamiyaclub.com/showroom_m...87535&id=13377
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#12
18-01-2010
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Quote:
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#13
25-01-2010
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was doing some testing at a local track yesterday, came of a small jump badly and snap went the right front arm, it was the original db01r one (hi traction) luckily my hobby shop had a pair of 501x arms in stock, straight away you can see how much chunkier they are, they will withstand much more abuse, which is what im looking for, though anyone know if these arms are interchangable, once cut from the tree, i couldnt find any markings to indicate its a left or right arm
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#15
25-01-2010
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Yep, the fronts are identical either side.
The 501x kit arms are stronger, but not indestructable. I snapped one at Petit... But, I'll only buy them in the future, the high traction and DB01 (not R) kit arms are weaker, in my experience.
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