T.O.P. Racing "Photon" 1/10 EP Touring Car
#4546
#4547
Tech Regular
iTrader: (1)
Hi Ralph, I'm running the belts the standard way. If I was trying to get weight down under 1400 then I would reverse the belts so I can take off weight and still balance the car L/R.
The droop is correct. 5.5 in the front (measured to the bottom of the arm under the outer hing pin) and 0.5 in the rear (measured under the connector piece of the hub).
The droop is correct. 5.5 in the front (measured to the bottom of the arm under the outer hing pin) and 0.5 in the rear (measured under the connector piece of the hub).
Thanks for the setup.
Just to confirm.. the measurement of 5.5 (front) and 0.5 (rear).. is that droop or downstop?
sam
#4548
Tech Apprentice
last year, there were some photos of his car (Bruins) at ETS, using black Tamiya TRF shock.
#4550
Tech Elite
iTrader: (5)
I've been looking at several of the Photon setups on Tchub and many like to sweep the front arms back by placing a larger washer behind the front front hinge pin holder versus the front back. In affect adding toe out.
What does this do versus just dialing in toe via the steering turnbuckles?
What does this do versus just dialing in toe via the steering turnbuckles?
#4551
Tech Champion
iTrader: (103)
If you're going to play with arm sweep, remember that the sweep of the arm also changes the wheelbase and the toe. You should correct both of them to see the function of arm sweep without confusing yourself with excess toe out or a shorter wheelbase.
Quoted from a post by Nexxus Racing.
Ah yes, the mystery adjustment...
It's a very common adjustment on rubber, but lately it has been surfacing in some foam setups. The most plain way I like to view it is to say that sweeping the arms "out" will you more steering into a corner, and (the more uncommon) "in" will give you more steering out of a corner. Just like with everything else, that statement isn't set in stone.
Lots of things come into play when you change arm sweep. When you sweep the arms out...
- the wheelbase gets shortened (moving the front axle back), and the wheelbase will change slightly as the suspension is compressed
- more ackerman results because of the wheelbase change
- the angles of the universals change. On most cars, sweeping the front arms out will make the car less susceptible to "chatter" because at any input of steering throw, the universals will assume less of an angle. This is because the universal joint is moved towards the rear of the car while the front spool/diff stays where it is, and the steering block will be toe-in some from its original position to get the proper overall toe
- the arms will bind less against the hinge pins during hard cornering, which is considered a big deal to some pro drivers
- weight transfer...it seems like less weight is transfered to the front suspension overall, however a higher % of the weight that is transferred goes straight to the tires (resulting in more turn-in) because the slightly changing wheelbase is causing the front suspension to resist compressing.
- hmm...what did I miss?
When I sweep my arms out on my rubber tire setups, I like to adjust the front end for more ackerman to give the car a nice steering feel at both low and high speeds.
Quoted from a post by Nexxus Racing.
Ah yes, the mystery adjustment...
It's a very common adjustment on rubber, but lately it has been surfacing in some foam setups. The most plain way I like to view it is to say that sweeping the arms "out" will you more steering into a corner, and (the more uncommon) "in" will give you more steering out of a corner. Just like with everything else, that statement isn't set in stone.
Lots of things come into play when you change arm sweep. When you sweep the arms out...
- the wheelbase gets shortened (moving the front axle back), and the wheelbase will change slightly as the suspension is compressed
- more ackerman results because of the wheelbase change
- the angles of the universals change. On most cars, sweeping the front arms out will make the car less susceptible to "chatter" because at any input of steering throw, the universals will assume less of an angle. This is because the universal joint is moved towards the rear of the car while the front spool/diff stays where it is, and the steering block will be toe-in some from its original position to get the proper overall toe
- the arms will bind less against the hinge pins during hard cornering, which is considered a big deal to some pro drivers
- weight transfer...it seems like less weight is transfered to the front suspension overall, however a higher % of the weight that is transferred goes straight to the tires (resulting in more turn-in) because the slightly changing wheelbase is causing the front suspension to resist compressing.
- hmm...what did I miss?
When I sweep my arms out on my rubber tire setups, I like to adjust the front end for more ackerman to give the car a nice steering feel at both low and high speeds.
#4556
Tech Adept
Hello
Shock Spring
PS-TR15550 Gamma Spring 393gf/mm, 22.0lb/in (2 pcs)
PS-TR15575 Gamma Spring 367gf/mm, 20.5lb/in (2 pcs)
PS-TR15600 Gamma Spring 344gf/mm, 19.2lb/in (2 pcs)
PS-TR15625 Gamma Spring 324gf/mm, 18.1lb/in (2 pcs)
PS-TR15650 Gamma Spring 306gf/mm, 17.1lb/in (2 pcs)
PS-TR15675 Gamma Spring 289gf/mm, 16.2lb/in (2 pcs)
The springs that come with the kit is the 344 in front and 306 in the rear.
Best regards:
Pedro Silva
#4557
Reedy Race
The Photon had a pretty good showing at the Reedy Race. I want to thank all the guys running a TOP car for all the hard work and support.
Eric Albano won 17.5. His car was good all weekend and drove excellent in the mains.
James Arluck ran the Photon and finished an impressive 2nd in 13.5. I think James held TQ through 3 rounds of qualifying.
Jesse Stark finished 3rd in open modified. He had some impressive runs, but just some bad luck in the mains.
The 2010 ROAR Nationals will be held at the same track (Norcal Hobbies). If you plan on coming we'll have a good starting setup.
Eric Albano won 17.5. His car was good all weekend and drove excellent in the mains.
James Arluck ran the Photon and finished an impressive 2nd in 13.5. I think James held TQ through 3 rounds of qualifying.
Jesse Stark finished 3rd in open modified. He had some impressive runs, but just some bad luck in the mains.
The 2010 ROAR Nationals will be held at the same track (Norcal Hobbies). If you plan on coming we'll have a good starting setup.
#4560