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Old 05-31-2010, 10:08 PM   #4546
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Originally Posted by Ron Goetter View Post
Why would anyone what to do that? The rod ends on the photon are the best out IMO...
I hear ya...
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Old 06-01-2010, 04:03 AM   #4547
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Originally Posted by E.J. Evans View Post
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).
Hi,

Thanks for the setup.

Just to confirm.. the measurement of 5.5 (front) and 0.5 (rear).. is that droop or downstop?

sam
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Old 06-01-2010, 08:28 AM   #4548
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Originally Posted by 008-Racer View Post
Hi can anybody please tell me what ball nuts and studs this gentleman is using to mount his shocks and camber links

Also what anti roll bar mounts are these?
I think it is Tamiya ball nut, ball cup and roll bar mount. or at least it is Tamiya style.

last year, there were some photos of his car (Bruins) at ETS, using black Tamiya TRF shock.
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Old 06-01-2010, 08:30 AM   #4549
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Why anyone would put those junk Tamiya ball ends on their car and ditch the top ones is beyond me. The TOP rod ends are the best in the business I have owned basically every major brand of car on the market and its not even close.
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Old 06-01-2010, 11:30 AM   #4550
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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?
Anyone have an idea why this is done?
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Old 06-01-2010, 01:09 PM   #4551
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Originally Posted by bkspeedo View Post
Anyone have an idea why this is done?
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.
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Old 06-01-2010, 11:40 PM   #4552
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stiltskin, thank you for posting this there was a lot of information there.
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Old 06-02-2010, 05:18 AM   #4553
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stiltskin, thank you for posting this there was a lot of information there.
Anytime. I'm here for you.
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Old 06-02-2010, 05:21 AM   #4554
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Can someone please post part numbers to the aspahlt springs used on the Photon? Thanks
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Old 06-02-2010, 05:59 AM   #4555
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Can someone please post part numbers to the aspahlt springs used on the Photon? Thanks
If i remember correctly they are Gamma Springs 326pounds and 306pounds rear. as for part number i'm not sure
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Old 06-02-2010, 06:27 AM   #4556
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If i remember correctly they are Gamma Springs 326pounds and 306pounds rear. as for part number i'm not sure

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:
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Old 06-02-2010, 09:25 AM   #4557
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Default 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.
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Old 06-02-2010, 09:31 AM   #4558
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Sorry my bad
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Old 06-02-2010, 09:36 AM   #4559
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EJ will probably kill me for this - but this is the new super narrow chassis TOP was caught experimenting with
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T.O.P. Racing "Photon" 1/10 EP Touring Car-img_1570.jpg  
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Old 06-02-2010, 10:00 AM   #4560
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EJ will probably kill me for this - but this is the new super narrow chassis TOP was caught experimenting with
This is what happens when Juan is allowed to work on his own car....
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