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Post by johnbalich on Apr 12, 2009 13:27:03 GMT -7
If you are feeling at a disadvantage because you don't have a 16.0 armature for SuperStock, I thought you guys might find this interesting
I tested about 40 T jet arms last night, and my best batch (several) read 17.0-17.0-17.0. I wonder if this is typical of other guys findings. How about weighing in on this guys?
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Post by allstarhr on Apr 12, 2009 13:47:53 GMT -7
From what I've read, your 17.0-17.0-17.0 will be better than a 16.0-16.4-16.9 if all else is equal.
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Post by kdog on Apr 12, 2009 14:17:00 GMT -7
Everyone gets hung up on the OHM reading of the arms. While it is good to have equal readings on the 3 Poles, some of my fastest cars OHM above 17, and I have some 16 OHM arms that aren't worth a darn. The only way to know for sure is to slap it into a good chassis and see how it runs. And don't throw away those Christmas tree arms, I have a few that are sweet runners high Ohm's and all, in fact I hunt for them at the Slot Car show.
DOG
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Post by dave hochallanged evans on Apr 12, 2009 14:55:23 GMT -7
I now have a car with a 15.5 Ohm arm and it doesn,t want to be as smooth at low voltage as the rest which the lowest is 17-21,21 being a truck Chassis i bought for the extra large rims. the 6 Ohm mean green for my up coming gasser wont even kick over till 9 v while the rest 4v is enough.
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Post by 440gtx on Apr 12, 2009 19:29:38 GMT -7
Dad's AMX qualified #6 at last years SS race with a mid 17 ohm christmas tree arm. All three poles were the same. We didn't even balance it. He ran it with a matched set of black and black/white stripe magnets.
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Post by johnbalich on Apr 13, 2009 9:48:50 GMT -7
Thanks guys. I was asking for myself of course, but I was hoping your answers might be helpful to all. I agree. Much like full size cars, these little guys seem to perform best as a result of combinations and matching in parts, rather than a specific impedance or magnet strength. All things being equal, lower ohms SHOULD be best, and the stongest magnets SHOULD be best, but it ain't always so! I once had an out of the box T Jet that ran like a bat out of hell, for no apparent reason. I wish I could analyze that car today.
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Post by dave hochallanged evans on Apr 13, 2009 14:18:42 GMT -7
John , maybe it was faster like I was back when,at least the wife says every time I talk of my High School CLORY days my 440 yard dash gets faster  , and the touch down catches more dramatic  , Yep the older I get the better I was. ;D I have run into a problem with the TigerLand Expresswhile doing a clean up, and light oil , then 4 volt run it seemed a lot slower ,so I clipped the power supply leads to the shoes flipped it over and pushed the brush springs. It picked up Rpms,the rub is have adjusted these springs so many times I belive I've weakned them. Has any one tried to replace them? or is it easier to just put the top plate on another chassis  .....think I just answered my own question  |
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Post by pceng on Jul 5, 2014 14:35:16 GMT -7
Seemed like the right place for this......... I have 4 , 16 ohm arms..... 16ish..... two have gold wire two red , both grey tips.......
Upcoming race for stock jets...... had me wondering if one or the other of these arms would be preferable....... gold wire seems weak but rpm is higher (by sound) when given time.... anybody know the poop on old t-jet arms ....... as applied to drag racing.
Remember the arms being different combinations of colors...... was there every any rhyme to the reason for this ........ or just a matter of running out of one color wire , changing supplies that sort of thing ?
tia .......... Peter
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Post by pceng on Jul 6, 2014 19:26:58 GMT -7
Going to go with the red wire , seems to have more torque......... have stock jet deslotting 1 out of 2 times on launch pad......... will add balast. Never have done this before...... any words of wisdom as to how much or where to put it would be appreciated.
............ Peter
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Post by pceng on Jul 10, 2014 20:00:19 GMT -7
Hopefully one of the arm winding people can answer this......... If an arm is double wound half as many turns with stock gauge wire. It in essence has as much wire on each pole as a stock arm. Would the ohm readings be half of what they were for the stock arm ? Or would they be less ?
Have a bunch of 15ohm arms that started calling me........
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Post by pceng on Jul 13, 2014 21:53:39 GMT -7
I can answer now - it's less.......... unwound 15 ohm aw......... each pole separately onto pencil or wound onto pencil from each pole.......... 415 turns or wraps on one pole , 394 & 407 on the others.
Re-wound with same wire double or double wound........ 195 turns...... what I figure the equivalent of 390 single wraps as far as amount of wire used. Thought since each leg was half (approximately) , resistance -ohm readings would be about half........ figured amount of wire being same torque would not be affected........
Was wrong about resistance....... arm now reads 4.0 ohms each pole....... find out about torque when I put it in something......... slightly advanced by filing notch then filled space with JB....... trued comm & blank before rewinding.
Let you know how it works
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Post by pceng on Jul 15, 2014 10:35:20 GMT -7
Put arm in chassis....... ran smooth and cool while sanding gears........ should be a good running arm .......... get back on this after I get it to track......
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Post by Deleted on Jul 15, 2014 13:59:32 GMT -7
ruh roh. another re-winder is bourne!
hope it works as well as you would like.
next time you de-wind an arm, consider taking a laminate from another arm (so, you have to strip two arms) and adding to the one you are going to wind. and see if that helps your program?
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Post by pceng on Jul 15, 2014 16:36:44 GMT -7
ruh roh. another re-winder is bourne! hope it works as well as you would like. next time you de-wind an arm, consider taking a laminate from another arm (so, you have to strip two arms) and adding to the one you are going to wind. and see if that helps your program? No Al , eyes aren't what they used to be.........was looking for 14ohm arms and a bag of 15's started talking to me.............. just playing around....... do it now and then. Thought some might be intrested in what can be done with stock arm as is........... Were you suggesting , I build a quad ? .........a dbl wound quad ? .........now you've done it............ here I go again..... Naw , just kidding......... was thinking of something else to do........ re-wound this time with bobbin (for fly tying)..........made things easy........ wrappings look nice.......... better than factory. Usually takes months before I start thinking of another wind........ using bobbin made this the easiest re-wind I've ever done....... started getting ideas as soon as this one was running........ we'll see. Has to be 40 yrs ............since doing a quad mmmmmmmmmmmm. I'll have to measure from plate to floor and see how much room to play. Peter |
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Post by pceng on Jul 18, 2014 9:16:57 GMT -7
Didn't want to walk all over elim thread.......... found a 2 lam red/red that ohms 14 ......... thought I had a Red Devil , but I think they are 16 ohm........... have gold wire/red tips also 14...... never know what you'll find..........
....... Peter
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, and the touch down catches more dramatic 
, Yep the older I get the better I was. ;D I have run into a problem with the TigerLand Expresswhile doing a clean up, and light oil , then 4 volt run it seemed a lot slower ,so I clipped the power supply leads to the shoes flipped it over and pushed the brush springs. It picked up Rpms,the rub is have adjusted these springs so many times I belive I've weakned them. Has any one tried to replace them? or is it easier to just put the top plate on another chassis 
.....think I just answered my own question 
