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Post by pete on Feb 20, 2019 14:12:25 GMT -7
Getting up to snuff on parts needed to compete in Drag racing. GTS's last race required slip on tires. I wasn't happy with the slip on that I used, but had no choice but to use what I had on hand. My questions are...
Are slip on tires true? If not do you not use them? Can you fix them?
Are they balanced? Can it be there are heavy spots causing vibration?
If the answers are no to both, how many do you need to buy to find good ones.
The tires I used were glued to the rims. But when you went past half speed the tires began to shake. Almost to the point the car would jump out of your hand. You could see by eye that the tire was deforming at speed. What do you guys do to get a pair of round balanced tires?
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Post by kiwidave on Feb 20, 2019 16:40:55 GMT -7
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Post by ecbill on Feb 20, 2019 17:03:53 GMT -7
www.supertires.com/Supertires are consistently good tires. Since trying them, they have become my favorites. Gluing tires on the rims so that they remain true and a straight can be tricky. Especially if you use any form of super glue. It seems like super glue dries fastest when it touches slot car tires or fingers. Even faster if both at the same time. Once they are glued on you can true them up by running them on sandpaper.
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Post by pete on Feb 20, 2019 19:38:39 GMT -7
I used silicon and they were Super tires. Maybe I didn't have enough dry time. Im guessing a fine grit? 800? I knew it wasn't right but sent them anyway. At speed they looked like eggs.
Ill try again to get it right. Thanks for the info my Brothers.
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Post by gnome on Feb 20, 2019 19:43:58 GMT -7
I like the supper tires as well
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Post by GTS on Feb 20, 2019 20:00:03 GMT -7
There is the option to use a little larger wheel so the tire will fit tighter. That of course will increase the diameter which can be good or bad  . I prefer not to glue tires on the wheels unless I'm left with no other alternative ..... but that's just me. I think Super Tires are a good choice, also. |
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Post by pete on Feb 21, 2019 3:22:06 GMT -7
The rims were 250|475 tire on the viper and looks like 275|480 tire on the storm. The rims were quicker and wizzard. Inside diameter of tires 250. I had to take tires off to get the measurements, they came right off so I didn't have them glued well.
In prep of gluing, cleaned rim and tire with rubbing alcohol. I used the silicone that Im using for casting, again what I had on hand. I will get some peratex window sili at auto store for my next tire setup.
Do I have it right? How can I improve the process? I had good speed but the et again was lacking. I have to think the rim was spinning and the car was hopping. Maybe reason I didn't need wheelie bars. I really am getting the drag car bug up in here. LOL
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Post by hairycanary on Feb 21, 2019 7:27:50 GMT -7
Pete I had the same trouble. When you rev it up it vibrates like a weed eater. The tires grow or expand off the rim. I had the same problem with glue like Bill. It dries to fast and it doesn’t let the tire seat and becomes out of balance or out of round. I’ve been marking the tire and rim to see it the tire is spinning on the rim and I mark the other tire on the other side so it’s even and the crown gear so the marks are straight across so you can see if tires are spinning on the wheels or wheels and crown are spinning on the axle ? I found some tire glue that’s been working pretty good. I will post a picture of the brand. But like Bill I don’t like gluing unless I have to. Hope what I said makes sense and helps ? I’m still learning to. These little cars are humbling.
Rick
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Post by AJR on Feb 21, 2019 7:51:48 GMT -7
I have been using this tire glue and so far it has worked great. What works for some may not work for others though. I previously used flowable silicone that can be found at the auto parts store. That also works very well on moderate builds. The tire glue is a one time use. Tire will be destroyed if removed.  |
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Post by Deleted on Feb 21, 2019 9:14:01 GMT -7
I have been using this tire glue and so far it has worked great. What works for some may not work for others though. I previously used flowable silicone that can be found at the auto parts store. That also works very well on moderate builds. The tire glue is a one time use. Tire will be destroyed if removed. thank you for the tip. I just ordered a couple bottles. if this glue works as advertised, we should be able to go very fast with slip on tires. |
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Post by dave632 on Feb 21, 2019 11:05:07 GMT -7
Super Tires are the best I have found also. I have the same glue Jeff has. It works well until I use it on the 50+ mph cars. Only silifoams work for me there. Using a tire that fits the
rim tighter is a very good idea until you reach very high speeds, 30+, then you must have glue. I have lost more tires on my track and they seem
to find the best hiding spots. It is sometimes comical to watch a tiny tire fly off the rim and go to the end of the track bouncing off the wall and
then finding a great hiding spot.
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Post by AJR on Feb 21, 2019 15:06:49 GMT -7
I have the same glue Jeff has. It works well until I use it on the 50+ mph cars. Only silifoams work for me there. Using a tire that fits the rim tighter is a very good idea until you reach very high speeds, 30+, then you must have glue. I have lost more tires on my track and they seem to find the best hiding spots. It is sometimes comical to watch a tiny tire fly off the rim and go to the end of the track bouncing off the wall and then finding a great hiding spot. Crazy rpm's = crazy centrifugal force. This glue is good to a point. But I think that is probably one of the reasons silli foams were created?? I have found that the type of tire also affects how well the glue works. Jel Claws are a softer compound tire and therefore expand more than the Super Tires. I like both tire brands, but on the faster builds I go with Super Tires and the glue. Pancake Super Comp and Inline Comp is about where I start having issues. |
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Post by dave632 on Feb 21, 2019 15:08:04 GMT -7
Here is something I wrote in the past about rim truing: Found this on another web site but it looked like good information. I added some info where I thought it was necessary. Truing the rear wheels (any HO slot car). While a lot of the more advance racers have fancy tools, the home racer doesn’t usually need them. One thing just beyond shoe adjustments and proper lubrication that’ll take most cars immediately to the next level is truing the rear wheels. Keep fresh razor blades handy. Cheaper by the box of 100. Each blade is good for maybe 5-8 cars. Dave632, I added this part: (If you have a separate power supply set it to 6-9 volts. Remove the rear tires. Holding the chassis in a vice or by hand if a vice is not available). Dave632, This info sounds good: Gently rest the blade against the spinning hub. Change angles slightly. If it doesn’t feel smooth, you should start getting shavings taking just the high parts off a little. Flip the blade over and do it again. Now the other wheel. Blow the shaving off the chassis, put your tires back on, wipe down the track with a slightly damp sponge. You’ll likely be surprised how much better the car sounds and handles. Slight fluttering sounds while running are often out of round wheels. This I agree with... Caution: Don’t over do it. It’s possible to take a wheel down too far. If you spend more than 30 seconds on each wheel, that’s probably too much. I eliminated some of the info that did not make sense to me. If you want to see the original post see below... Read more: nitroslots.com/thread/4377/rear-wheel-hub-truing#ixzz5gCogoeE3 |
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Post by AJR on Feb 21, 2019 15:17:38 GMT -7
Yes Sir! Vibration caused by untrue tires and rims are power/speed robbers! Big time. I haven't heard anyone mention double flange wheels. I don't use them a lot because I don't like the way they look, but the flanges give the tires more surface area to grip. They help tremendously.....when allowed. I have to say that the quality of the Jel Claws and the Super Tires has always been very good. I can honestly say that I have never gotten a bad set of either.
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Post by pete on Feb 21, 2019 20:34:05 GMT -7
Very Cool, THANK YOU everyone. I started racing as all of, or most of us, at a very young age. My Oma brought me a gift from Germany, a 1/32 race set. It had F1 cars and she picked up a silver Gull wing Mercedes. I loved it from the start. Later in my teens, my friends and I would cut school to race HO. Good Times. Then girls and drinking beer in the woods became to thing to do.
Around age 30 I found a group of guys racing stock super gs and it was on again.
From there the search for speed and how are you guys going so fast became the quest. I am lucky to be in a area that on any weekend you could race. Time changed, Going away for the weekend became expensive. Hotel cost and fuel doubled. I man with a family, you know.
I was taught if you want to learn how to be fast it will come at a cost. Not money, action. Action speaks louder than words. Not what you say, its what you do.
Im taken back by the information you guys are so freely sharing. Its what I believe in. Pass it along. Thank you!
I have raced road course for a long time. I can build horsepower, but never learned much about slip on tires over the years. I know enough to know I was doing something wrong. For you all to answer my question tells me I want to be here. Thank you. Did I say that already? I tend to rePete myself.
It will be returned be me as much as I know.
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. I prefer not to glue tires on the wheels unless I'm left with no other alternative ..... but that's just me. I think Super Tires are a good choice, also.
