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Originally Posted by Robio
(Post 15903761)
What is a good starting FDR for the Gravity Spec motor. Running it for the first time on Parking Lot Asphalt. Fairly open track layout with 80-90' Backstraight.
Rob... |
2.9fdr to 3.10 fdr on 100ft straight tracks, depending on infield smoothness....
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Prefect. Thanks. I searched the thread and couldn't find much info. I know gearing is subjective but ballpark helps. I'm new to 21.5
Yes Ray, for Santee. Will you make it down? |
Originally Posted by Robio
(Post 15903872)
Prefect. Thanks. I searched the thread and couldn't find much info. I know gearing is subjective but ballpark helps. I'm new to 21.5
Yes Ray, for Santee. Will you make it down? |
Originally Posted by theproffesor
(Post 15894874)
Sent a message to Paul to get the lowdown on the new rims. The old wheel is 7mm from face of wheel to hex, new wheel is 6.7. That’s it’s. It is only .3mm difference.
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Originally Posted by Sabin
(Post 15904103)
When can we expect to see the new rims/tyres?
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Originally Posted by theproffesor
(Post 15904212)
They are already out and what is available on his site. They are the 6 spoke rims.
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Will the non belted tires be completely phased out?
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Originally Posted by glennhl
(Post 15904321)
Yes, the last 4 sets of USGT tires I've bought have been the new 6 spoke rims. However, even thought the new belted tires showed up at a national race recently they are not available to the public. I'm guessing Paul wants to use up his supply of non belted tires first to keep the hobby shops from having to eat a bunch of inventory.
Originally Posted by Dan
(Post 15904327)
Will the non belted tires be completely phased out?
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Originally Posted by theproffesor
(Post 15904212)
They are already out and what is available on his site. They are the 6 spoke rims.
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Originally Posted by Sabin
(Post 15904365)
What's the website? There's a lot going on here so it's hard to keep up.
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Went with the gearing advice I was given this past weekend. Started at 3.8, went down to 3.4. Temps were fine considering ambient was high 80's. Track temp around 120*ish. Couldn't get out of everyone's way fast enough! It wasn't horrible in the infield, but down the straight, which was shortened to about 50-60', it was laughable. Guess I could've gone lower on the fdr, but didn't seem worth the time to swap out the spur, as the pinion I used was large as I could go.
Am I missing something, or is that about all I'm gonna get out of the Spec motor? On a positive note, the new chassis was fantastic! |
Originally Posted by Robio
(Post 15905689)
Went with the gearing advice I was given this past weekend. Started at 3.8, went down to 3.4. Temps were fine considering ambient was high 80's. Track temp around 120*ish. Couldn't get out of everyone's way fast enough! It wasn't horrible in the infield, but down the straight, which was shortened to about 50-60', it was laughable. Guess I could've gone lower on the fdr, but didn't seem worth the time to swap out the spur, as the pinion I used was large as I could go.
Am I missing something, or is that about all I'm gonna get out of the Spec motor? On a positive note, the new chassis was fantastic! |
Originally Posted by Xrayray
(Post 15905709)
Rob, I could a told you it's weak and only good against other spec motors. I have a Motiv MC4 21.5 Dyno tuned if you want to try it out.
I appreciate the offer Ray. I have a new TCR 21.5 coming... |
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