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Old 07-08-2014, 06:21 PM   #6631
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Originally Posted by scooby61 View Post
Rsd makes a set of 23mm for the xray work like a champ and are progressive rate so you won't bottom out as easy
which ones or for which car are the 23mm springs? I see 20mm and can't find a spec on spring length on any of the other ones. Got a link?

Thanks
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Old 07-08-2014, 08:34 PM   #6632
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Sorry they are 20 mm
This is what I use car is very stable on asphalt lots of mid corner and exit steering http://www.reflexracing.net/RSD-20mm...ir_p_1735.html
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Old 07-09-2014, 03:22 AM   #6633
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It is common to use progressive springs on asphalt and mostly linear springs on carpet?
The progressive springs (in comparison to linear springs) raise the CoG while cornering, thus the car bottoms out less but has a tad less corner speed?
In real racecars it is like that IMHO
Maybe scrubbing the chassis along the ground doesn`t hurt performance that much on carpet? And durability of the chassisplate is also less of an issue there?

Last edited by Worst87; 07-09-2014 at 03:34 AM.
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Old 07-13-2014, 10:08 PM   #6634
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Any recommended pinions for stock motor gearing.
Just picked up a used 411 2.0 and have no idea on gearing for 17.5.
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Old 07-14-2014, 07:29 AM   #6635
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I would guess between 45-50 in 64p. I'm at a 57 right now for a large outdoor track. Depends what your track looks like.
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Old 07-28-2014, 11:28 AM   #6636
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Any recommended pinions for stock motor gearing.
Just picked up a used 411 2.0 and have no idea on gearing for 17.5.
I run 3.9-4.0 FDR on my very small carpet track and usually have temps of 110-130F after the race. Depending on your track, I would start off with 4.1 FDR and check the temps after a 5 minute period. Gear up or down depending on how hot or cold the motor is after that.

Gearing chart provided below, courtesy of PetitRC.

http://www.petitrc.com/reglages/serp...11_Gearing.xls
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Last edited by CamLS; 07-28-2014 at 11:29 AM. Reason: typo
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Old 07-29-2014, 06:23 PM   #6637
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Something I've never gotten a complete answer on is belt tension. What's a good rule of thumb? On an eryx2.0. I just replaced both belts and not sure if they are too tight.
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Old 07-30-2014, 12:30 AM   #6638
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I've been holding out on the 3.0 becuase theres mixed feedback on whether it suits 13.5 and low grip tracks. Has anyone got feedback on how the kit performs?
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Old 07-30-2014, 09:51 AM   #6639
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I've been holding out on the 3.0 becuase theres mixed feedback on whether it suits 13.5 and low grip tracks. Has anyone got feedback on how the kit performs?
A lot of us are having great results on low bite! The biggest thing with the 3.0 is using the right tires.
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Old 07-30-2014, 11:42 AM   #6640
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Something I've never gotten a complete answer on is belt tension. What's a good rule of thumb? On an eryx2.0. I just replaced both belts and not sure if they are too tight.
It sort of depends on what class your running. In general, the slower classes can run with looser belts, where mod uses a tighter belt. You can also alter the way a car feels by running a front belt tight and a rear belt loose and vice versa. You can run a rear belt a little looser than a front belt since its shorter and doesn't whip as much.
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Old 07-30-2014, 11:29 PM   #6641
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A lot of us are having great results on low bite! The biggest thing with the 3.0 is using the right tires.
Using right tires has always been important. My local track is low traction large asphalt track and I ran in 13.5T stock class with default setup with 2000 diff oil and the car is pretty stable. Some changes are absolutely needed but the car has more than enough flex to compensate the low grips and a little tweak will make the car run fine. I'll update you after this coming Sunday.
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Old 07-30-2014, 11:30 PM   #6642
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It sort of depends on what class your running. In general, the slower classes can run with looser belts, where mod uses a tighter belt. You can also alter the way a car feels by running a front belt tight and a rear belt loose and vice versa. You can run a rear belt a little looser than a front belt since its shorter and doesn't whip as much.
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Old 07-31-2014, 07:47 AM   #6643
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Ran my 3.0 for the first time over the weekend. Med/Small outdoor asphalt track, low traction. We blew the track and sprayed with soda to help. In full sun most of the day, outside temps were mid 90's and 80ish% humidity. Car stock with 3k rear diff oil was really good. It wanted to over rotate mid corner, so increased the wheel base by moving the rear arms back 2mm (4mm front shims, 2mm back). This gave me a smidge of push, so laid down the front shocks one hole. I was dragging the left rear of the chassis on the sweeper, so increased ride height to 6mm front, 6.5mm rear and it helped some. Droop is 2mm over ride height in front, 1.5mm over ride height in the rear. Car is amazing to drive, carries tons of corner speed and is very smooth. I will be swapping to old towers and tall shocks to test next time, but car was really good.

This was running mod, 4T D3.5 motor and 0 can timing, LRP SXX V2 TC Spec with light boost (3), no ESC expo (8), and moderate drag brake (4). Geared 26/112 64p. Motor and ESC coming off around 130* after 6 min. Tires were initially Solaris Mediums which had several runs on them already. By the third run they were done, went to a new set of Sorex 36's and they were great. Had grooves in 2 of the tires and one worn spot to the belt after 6 runs though. Running 1.5 front camber, 2 rear.

Car was night and day better then my S411LE though. The additional flex really stuck the car to the track, and the corner speed was noticbly better and the car was more predictable. Very pleased.
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Old 07-31-2014, 01:39 PM   #6644
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I've been holding out on the 3.0 becuase theres mixed feedback on whether it suits 13.5 and low grip tracks. Has anyone got feedback on how the kit performs?
I've recently ran 13.5 boosted on low/medium traction large asphalt track here in the UK. Running Sorex XG-32 Tyres with Yellow Inserts (control tyre). The 3.0 was easier to drive over my 2.0 I wasn't faster with the 3.0 just more consistent because it was an easier car to drive quickly.

As the grip came up over the weekend the car started to develop off power under steer which a rear roll centre adjustment fixed. For me at least the 3.0 is a better car than the 2.0 and responded well to setup changes.
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Old 07-31-2014, 02:31 PM   #6645
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I've recently ran 13.5 boosted on low/medium traction large asphalt track here in the UK. Running Sorex XG-32 Tyres with Yellow Inserts (control tyre). The 3.0 was easier to drive over my 2.0 I wasn't faster with the 3.0 just more consistent because it was an easier car to drive quickly.

As the grip came up over the weekend the car started to develop off power under steer which a rear roll centre adjustment fixed. For me at least the 3.0 is a better car than the 2.0 and responded well to setup changes.
How's ur wheelbase? And did u increase roll center in the rear? Lastly what diff do u use Dan?
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