- This topic has 21 replies, 5 voices, and was last updated 7 years, 9 months ago by
.
-
Posts
-
I am curious to hear the results of Mark’s testing of the rear side-to-side weight balance on the RevoSlot car to see what difference it makes on the increased wear to the rear tires on the left side of the car. There is a difference in rear weight left-to-right but I suspect it may not be the cause of the difference in wear. I think it may have more to do with driver technique and the layout of the track. The RevoSlot cars are heavy and increased wear can be expected. I think it may be that drivers may generally drive harder through the turns on the north end of the track, putting more wear on the left side. It could be, though, that weight balance is a factor.
In any case, it would appear that, at least, changing the rear tires left to right between races would be recommended. Measuring diameter and truing the larger tire would be an even better idea. I did not check my rear tires before the race, and only after the race did I discover that my left tire was 20.49mm and the right tire was 20.68mm. The car was unstable during the race, wriggling from side to side. The differential in gearing between the rear tires was undoubtedly the cause.
I have checked tire wear in the last three races and it is all over the map. I think so much of the tire wear is due to your driving style and how hard you are on the tires and in what turns. Some push hard in the last turn and may get more right rear wear while others might push harder in the first and third turns and get more wear out of the left rear. This is to say nothing about any variances in the tires them selves. If anything, I don’t think any extra weight would help. I think it would only exasperate the situation. These cars are 100 grams and are wearing a pair of tires every two races. I would hate to see them wear any quicker.
RevoSlot rear tires are on the way!!!!!!
Alan and Chris at 132slotcar are sending us 16 pairs of original rear tires to use for the remaining two rounds of the RevoSlot Porsche GT2 series.
Be sure to reach out to Alan and Chris with a quick Thank You.
They are pulling tires from in-stock cars to get us taken care of. He has more on the way but they won’t be here in time.
I will update everyone once the tires arrive.
These tires do not need much truing so don’t go too deep when truing.
Thanks to the work of Alan and Chris at 132slotcars we once again have tires for the RevoSlot series. 16 pairs of tires were dropped off at the track yesterday and eight pairs were gobbled up by those club members that were there tuning their F40’s, McLaren F1 GTR’s, Rally cars and RevoSlot cars. The remaining tires are in the club tool box. Please write down how many you took. The tires are not free and I need to collect from everyone. Remember that lightly trued tires work great and give you the advantage of additional roll out.
Here is an image of David hand selecting his tires.
Thanks for doing this Marty! FYI guys- the tires are in the left white pit-box, upper left side. Near them is the sign-out sheet; please take a max of two pairs (4 total).
NOTES
These are ‘new old-stock’ – they do not have the ribs or the severe divots the new tires (from PSR) have. They do have a slight center molding flash and shallow molding divot/nipple.
You need to use the HUDY or the P&N truers – the newest truer does not have a 3mm axle yet.
Avoid using lighter fluid – it accelerates the gumming; just true slow (1.8amp? at 3v)
Don’t try and get rid of the divot, just get rid of the flash and get an even tread-face.
20.9mm trued diameter gives you the better roll-out Marty mentioned and leaves enough meat for two(?) races (and associated practice).
*Roll-out – effectively higher gear ratio (like having a smaller spur) giving more forward movement covered for every turn of the pinion."... get on your bad motor scooter and ride!"
Sammy with MontroseI trued 2 sets of new tires on my wheels and kept the PN truer running at 3 volts with very little friction measured by the amp meter showing 2.1 or less. I also stopped often to look at the scuff pattern and not over true. With each set, I trued until it looked ok then ran some laps. Once the track was cleaned a little I got 4.0 second laps. One set took two tries on the truer giving a 0.2 second improvement. I ended up with tires measuring 21.2 mm on one set and 21.0 mm on the second set. No rubber balled up or chunked, but there was plenty of rubber dust on the truer. I still have the dimple on each tire. We should require the dimple at pre-race inspection.;)
I switched the tires between right and left side of the drum during each truing session. It looks to me like the sanding surface on the PN is not consistent across the drum from left to right. The right end looks higher and the left end looks more worn. Do we have replacement sanding covers?
- You must be logged in to reply to this topic.