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Post by yellerstang on Mar 31, 2015 9:57:27 GMT -7
Hey, about the 4 gear cars from AW... What is your preference for motor brush springs and motor brushes?
Have you tried and liked/disliked original AFX parts for this, do you see improvement or loss? The brushes look so much alike, but the AFX is old old old stock....
I have been spending some time on these chassis, but have not tried the other brushes in testing.
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Post by pceng on Mar 31, 2015 13:50:26 GMT -7
Hey, about the 4 gear cars from AW... What is your preference for motor brush springs and motor brushes? Have you tried and liked/disliked original AFX parts for this, do you see improvement or loss? The brushes look so much alike, but the AFX is old old old stock.... I have been spending some time on these chassis, but have not tried the other brushes in testing. Wiz E-81 brushes are in most of my 4g's. When dropping to m/green arm from stock 15 ohm, JB Thunder brushes or Slottech. Been switching over from JB to Slottech. Slottech seem to operate better in brush pocket in response to spring. Strange somehow, both need pocket cleaned to operate. .......... Peter |
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Post by AJR on Mar 31, 2015 16:41:44 GMT -7
Those are great suggestions...... Wizzard E-81 I just started using and like them. Have used JB Thunderbrushes for awhile and like those as well. Brush pocket on some cars will need to be reamed out slightly to accomodate the JB's. Haven't tried the Slottech but will give them a try now. Anything is better than the stock brushes, but I have seen fast cars built using those too. Stock brush springs are ok and can be stretched slightly if needed.
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Post by pceng on Mar 31, 2015 18:34:56 GMT -7
Those are great suggestions...... Wizzard E-81 I just started using and like them. Have used JB Thunderbrushes for awhile and like those as well. Brush pocket on some cars will need to be reamed out slightly to accomodate the JB's. Haven't tried the Slottech but will give them a try now. Anything is better than the stock brushes, but I have seen fast cars built using those too. Stock brush springs are ok and can be stretched slightly if needed. Wizard came out with a new brush (forget designation). Though.hyped.as better, from test reports I've seen elsewhere the 81's are consistently faster. Should say those were lap times. JB's , seem to work better for me in t-jet type chassis or with no coil spring. Impression I've gotten is Slottech brushes have smoother sides because of difference in movment. Also see Slottech proclaimed the best in every comparison I've seen. |
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Post by pceng on Mar 31, 2015 19:51:40 GMT -7
Forgot, have seen domed/notched bushes used. Last half coil on spring is bent up. Have not tried but this would bring silver brushes into picture. Question on mind till I try will be....... Is there enough contact between spring and brush.
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Post by yellerstang on Apr 1, 2015 10:02:42 GMT -7
Those are great suggestions...... Wizzard E-81 I just started using and like them. Have used JB Thunderbrushes for awhile and like those as well. Brush pocket on some cars will need to be reamed out slightly to accomodate the JB's. Haven't tried the Slottech but will give them a try now. Anything is better than the stock brushes, but I have seen fast cars built using those too. Stock brush springs are ok and can be stretched slightly if needed. If you are careful, you can polish the sides of the brushes to get a better fit. I have done this several times, but sometimes they are snug even after they are cleaned. Hold your used brushes with self closing tweezers, put them in the blue part of the flame from a zippo lighter. Cook the crap out of them, you will see an instant pickup in power. The brushes are porous and they hold oil... I hope to try some of my old Tjet silver brushes, but haven't had a chance yet. Soon, I hope. Family stuff and holidays.... |
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Post by AJR on Apr 1, 2015 16:19:20 GMT -7
Those are great suggestions...... Wizzard E-81 I just started using and like them. Have used JB Thunderbrushes for awhile and like those as well. Brush pocket on some cars will need to be reamed out slightly to accomodate the JB's. Haven't tried the Slottech but will give them a try now. Anything is better than the stock brushes, but I have seen fast cars built using those too. Stock brush springs are ok and can be stretched slightly if needed. Wizard came out with a new brush (forget designation). Though.hyped.as better, from test reports I've seen elsewhere the 81's are consistently faster. Should say those were lap times. JB's , seem to work better for me in t-jet type chassis or with no coil spring. Impression I've gotten is Slottech brushes have smoother sides because of difference in movment. Also see Slottech proclaimed the best in every comparison I've seen. I have pretty much used the JB's exclusively in everything. I have not had anything perform better yet. Just bought my first E-81's before the Finals so not a lot of testing has been done with them. AFX brushes seem to be better than stock AW, but not better than JB's......for me anyway. Haven't heard about the Slottech till you mentioned them Peter, but I want to give them a try. They sound promising. |
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Post by Phantom B.S.E. on Apr 1, 2015 16:50:23 GMT -7
Wizard came out with a new brush (forget designation). Though.hyped.as better, from test reports I've seen elsewhere the 81's are consistently faster. Should say those were lap times. JB's , seem to work better for me in t-jet type chassis or with no coil spring. Impression I've gotten is Slottech brushes have smoother sides because of difference in movment. Also see Slottech proclaimed the best in every comparison I've seen. I have pretty much used the JB's exclusively in everything. I have not had anything perform better yet. Just bought my first E-81's before the Finals so not a lot of testing has been done with them. AFX brushes seem to be better than stock AW, but not better than JB's......for me anyway. Haven't heard about the Slottech till you mentioned them Peter, but I want to give them a try. They sound promising. Wizzard also has E-85 brushes I believe they have more copper in them. |
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Post by yellerstang on Apr 2, 2015 3:04:25 GMT -7
I have used the Slottech brushes in my tjets with great results. Faster than most and easier on the comm plates. Wiz brushes are hard on the plates. They work, but with a prices. JB brushes are a good choice between performance and wear over stock brushes. We have had some fast tjets with factory stock brushes too, the originals are very good, just old... (nearly as old as me!)
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Post by Eagle Racing on Apr 2, 2015 5:08:24 GMT -7
IMO it is all in the setup. I have some fast cars with AW brushes, some with wizard, slottech, and JB. Sometimes you see a major increase in performance and other times not so much.
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Post by yellerstang on Apr 2, 2015 11:13:16 GMT -7
Eagle, I agree. A lot of it is in the set up. I would love to do a brush test sometime to compare these brands, it would be interesting for sure. So many things affect these cars, just the slightest change and it slows down... so.... whaddyawant buddy, chocolate or vanilla?! Strawberry! a quote from my youth at the local ice cream shop.
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Post by pceng on Apr 3, 2015 6:34:10 GMT -7
Any comparison test I've seen puts Slottech at top of list for brushes.
Springs were mentioned. And Jeff, pointed out strectching them to increase pressure. Some will play with contact on chassis to do the same. Another method to increase pressure is to add a second spring. A "helper" spring, as used for inline pick ups. Smaller diameter that will fit inside of existing spring. Brush height in relation to chassis floor could stay the same. Only have more resistance to pressure applied by comm.
Saw Wiz E-85's mentioned......... think these are the newer brushes. Should mention that in tests comparing 81's to 85's the difference between the two is very slight if any. But when a difference is made the 81's hold the edge in terms of SLIGHTLY lower times.
......... Peter
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Post by yellerstang on Apr 3, 2015 8:24:27 GMT -7
Pceng, I just started using the smalle spring inside the pickup shoe spring in some cars, but I have no source for the tiny spring. Where can I get them?
The springs I have were from a TCR race set from years ago, but I have not seen them any where.
I think the second spring makes the other one more stable, gives more contact area to the chassis, and acts like a heat sink.
Sources for these anyone!!?? Thanks
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Post by Eagle Racing on Apr 3, 2015 11:29:15 GMT -7
Where is this comparison test information at you keep referring to Pceng? I would like to read it.
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Post by pceng on Apr 3, 2015 11:52:08 GMT -7
Second spring makes a lot of sense. Especially when consindering improved flow.
Think Lucky Bob's may carry the springs............ will check if brush springs for inlines will fit inside pancake spring. Could be source after shortening if they fit.
......... Peter
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