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Old 07-25-2013, 03:24 AM   #1231
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Cap tires? Where?
Looking through the list of shops on the manufacturers website http://johnsbsrracing.com/cap-tires throws up Lefthander RC
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Old 07-25-2013, 09:00 AM   #1232
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Those are oval-style caps, the softest of which is still very hard. When "caps" were used in roadcourse/On-Road racing, they were generally more like and sometimes quite literally, "capping" a standard foam tire with a bicycle innertube, usually not even wrapping the rubber over the sidewall to give a very soft tire. It was popular technique for F1-rubber classes some two decades ago but I'm pretty certain they've closed that loophole in their rules by now.
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Old 07-25-2013, 09:26 AM   #1233
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It was popular technique for F1-rubber classes some two decades ago but I'm pretty certain they've closed that loophole in their rules by now.
You are talking about Tamiya tyre caps there, sold as a rubber sleeve you fitted over your foams. Great tyres in the wet, gave more grip in standing water than foams on a dry track, but not much good in the dry as they picked up any dust on the surface. Long since discontinued but they do pop up on ebay from time to time. Search for Tamiya 53090 or 53184.
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Old 07-25-2013, 05:58 PM   #1234
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Now that you mention the Tamiya-type caps, I remember folks trying this with bicycle inner tubes. The BSR-type caps are one reason that I don't have an interest in oval racing. The indoor oval that was in Greenville, SC years ago would eat a set of caps in one night in the pro stock class. This was back in the days of 45* timing advance on 27t "stock" motors, so you'd destroy a $28 motor every race night, too. With entry fee, that's about $100 for 16 minutes of run time (12 minutes on some nights).....and that's in 1990's $!
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Old 07-27-2013, 01:47 AM   #1235
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I have no experience with them but I have read that BSR caps last quite a long time on normal surfaces like asphalt? They are quite expensive though so I don't know how the price vs wear is against foams (in oval).
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Old 07-27-2013, 10:21 AM   #1236
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I have no experience with them but I have read that BSR caps last quite a long time on normal surfaces like asphalt? They are quite expensive though so I don't know how the price vs wear is against foams (in oval).
It would vary a bit on the surface but the key to remember is that in Oval, you are quite literally grinding one side of your car into high-speed corners thousands of times a race day and they would often run staggered caps, meaning the outside tire is larger than the inside, so you just have to grin and bear it with replacing at least your right-hand tires very often. There's a reason interest in Oval is best described as "regionalized"....
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Old 07-27-2013, 10:22 AM   #1237
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Pro 10: 235mm Le Mans Prototype Pan Car Discussion-20130725_200358.jpg

Almost done!
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Old 07-28-2013, 10:45 AM   #1238
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Wanted to share my Delta Villian. It is in as raced condition from back in the day. Was run as both an oval and a roadcourse car. Only optional piece is the Hyperdrive belt drive.
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Old 07-29-2013, 02:57 AM   #1239
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Cool car! I am not sure if I could work with no ride height adjustments
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Old 08-03-2013, 01:59 PM   #1240
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Not bad...you ever thought of converting it for brushless motor racing?
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Old 08-05-2013, 03:18 PM   #1241
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Thought you might like to see my current project. It is a graphite RC10L with a few new pieces. I installed the chassis brace from a fiberglass 10L2 and the object on top of the Rx is a $3 Turnigy voltage booster.
Enjoy!
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Old 08-05-2013, 03:19 PM   #1242
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Another picture.
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Old 08-05-2013, 03:23 PM   #1243
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One more.


Also, I need to learn how to post pictures.
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Old 08-10-2013, 03:06 PM   #1244
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Wanted to share my Delta Villian. It is in as raced condition from back in the day. Was run as both an oval and a roadcourse car. Only optional piece is the Hyperdrive belt drive.
So finished the conversion to a Delta Villain IFS with NIP parts and an older set of Delta shocks from my Intimidator.

The ride height was not an issue back in the day when we ran caps. Also it will stay in the last run condition, aside from the IFS and displayed in a book case.
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Old 08-10-2013, 03:37 PM   #1245
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Wow that looks awesome!, nice work you got there.
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