(10th-May-21, 03:11 PM)BARacer Wrote: I need to make them a bit narrower on the inside edge, so will try out the little needle tyre cutter on the Hudy.
And I do need to take a bit off the diameter to get them to the size I want. So I might end up without any imperfections after all.
Then I'll have a N22 / Supergrip showdown!
Jeremy, do not use the needle tyre cutter on the Hudy !!!,....it is for sponge tyres only.
If you are careful, you can use the Hudy and a scalpel to narrow the tyres......make sure the tyres are rotating away from you (at the top) , and with a fresh/sharp scalpel blade (and a steady firm hand) you will be able to slice the tyre cleanly.
You may want to consider placing the dimple in line with the grub screw on the wheel.....the slight depression in the sidewall at the dimple, may give a bit more room to insert your tyre wrench.
With NSR tyres it is never a bad idea to start with a tyre that is a touch taller..........this allows you to take off a smidge more rubber, ensuring you get below all the dips/dimples/irregularities commonly found on the NSR's.
Cheers
Chris Walker
(This post was last modified: 10th-May-21, 04:37 PM by chrisguyw.)
Dimple on the inside usually..............for traction I don't worry about the dimple as it's on the inside of the tire. If it's there it's there. Some NSR tires fit better though (only select model of NSR tires & 12mm & 13mm CBD Hubs) with the dimple on the outside (check inside / outside hub fitment) and make sure the profile is tall enough in order for you to be able to true down to eliminate the dimple / irregularities as it is the outside of the tire that will be taking the full cornering load.
You can sand any sidewall irregularities as you have pictured. Don't forget to sand both directions by reversing polarity to eliminate any "feathering". I have aluminum "sticks" with various types of grit glued on for sidewall grinding. Lighter fluid works well on the sidewall to smooth the surface if you had to grind down the sidewall.
I have tried various brands of rubber tires and so far the non EVO tires are my favorite.
True slowly and use finer and finer grits along with lighter fluid to true and keep cool no other tire has won the GT3 or Group5 proxies. Both proxies have set several track records in North America. Patience is key.
(11th-May-21, 06:50 AM)BARacer Wrote: Who'd have thought that all I would be left with was this little dink...
(everyone but me it seems!)
Yep. Can't add any more advice, all the others beat me to the good bits.
I haven't found the "dimples" to be an issue. Like others, I always put the mold marks to the inside, as the load is always to the outside of the tyres.
Once you have done a few hundred laps, the tyres will begin to show a natural taper to the outside as they wear and bed in.
The end result of that is a leaning tyre which then has full load across the width...
A lot of cars "get faster" as the wear settles in.
(10th-May-21, 07:33 AM)BARacer Wrote: So all the advice is to use NSR tyres for your fast cars, but when a packet of 4 Supergrips contains the following three examples, you have to question their manufacturing methods.
I can't remember where I bought these from, but the fact they even made it into the pack puts me off spending my money with them.
So it would appear that NSR are having some serious issues with faulty tyres. Even the new super grip (grey tyres) have considerable mold defects and dags, the response from NSR has been to return for refund, though the return postage negates the refund...
The grey tyres true up great and run great, the only thing I've noticed is as the tyre wears the holes and other defects are getting bigger over time.
What's the fix for this? Well NSR need to inspect their tyre molds and injection machinery to get a handle on this before further damage is done to their name and products.
(10th-May-21, 07:33 AM)BARacer Wrote: So all the advice is to use NSR tyres for your fast cars, but when a packet of 4 Supergrips contains the following three examples, you have to question their manufacturing methods.
I can't remember where I bought these from, but the fact they even made it into the pack puts me off spending my money with them.
So it would appear that NSR are having some serious issues with faulty tyres. Even the new super grip (grey tyres) have considerable mold defects and dags, the response from NSR has been to return for refund, though the return postage negates the refund...
The grey tyres true up great and run great, the only thing I've noticed is as the tyre wears the holes and other defects are getting bigger over time.
What's the fix for this? Well NSR need to inspect their tyre molds and injection machinery to get a handle on this before further damage is done to their name and products.
It's been a problem for years, as they were the best tyres we put up with it...but there's new compounds on the block...even NSR special black tyres are pretty damn good, SlotIt G25's and Scaleauto A-S25's also seemingly as good.
Life is like a box of Slot cars...
1 member Likes Kevan's post:1 member Likes Kevan's post • Johnno
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