1441 replies to this topic

[TSR]

What motor do you have in the car?

[Prof. Fate]

Hi,

P, I use them as well. Being that I lost my tap, I just recently got a NEW 4/40. But I am currently drilling and tapping the aluminum press-on MMK wheels I have.

Fate

[Larry LS]

What motor do you have in the car?

Dokk,

I have currently a TSR motor in the car and it also has had two Falcon 7s in it previously with the same gearing. The TSR runs well also. I even won a race last night here with it by staying on all but one time for only a two lap penalty in our crash and burn format at Foster's. So I think that is hard to beat for a gear setup.

[TSR]

Well, I will have to try it again but the first experience was not so good...

[Mark Wampler]

Congrats, Larry, for kicking my butt by a lap and the track owner by 1-1/2 laps. You kept it on and stayed out of traffic.

[SlowBeas]

The only problem that exists is using a "reducer" with 3/32" axles.

You hit the nail on the head, Ron. Although it's not really a "problem," per se, it requires jury-rigging a gear. I might not be the greatest scratchbuilder in the world, but I want things done right, not jury-rigged. No one seems to make 48p to directly fit 3/32" axles.

It just gives you the chance to run a bigger spur without hanging below the chassis like a 32 tooth Parma would.
Mid-America 64 pitch crown gears

The larger the gear, the more teeth. The more teeth, the smoother the mesh IMHO. 64p provides greater flexibility.

And BTW, I'm not trying to create a problem. Please refer to my original post. I was only asking if the use of 64p gears falls within the rules. That's why I posted my question under the section that seeks "IRRA Rules Questions and Comments." I'm not trying to be a smarta$$; just trying to find something that works best for me.

Thanks again for the helpful responses.

Beas

[Ron Hershman]

Beas... no problem created on your part at all. Good question(s) from you.

[Cheater]

Beas,

The only problem I have with you is that you haven't shown up at either of our first two SERRA races... and I suspect we won't see you at Oak Mountain in March either.

But if you don't show up at our Abbeville race in April...

[SlowBeas]

Oops. busted.

[Pablo]

Hypoid setups: I've experimented enough to tell you a Slot.it 9/30 will work fine. An 8t pinion, however, will chew the crown.

I must say Mike Swiss' steel pinion/Parma sleeved combo meshes really sweet in hypoid setup.

[MSwiss]

Pablo,

That's why I would be more excited to see new 3/32" axle, 48P crowns from GT1 (or whoever) than 64P.

[Pablo]

I think they would sell like hotcakes right now.

[Ron Hershman]

Went to IHOP for a snack... didn't see them on the menu.

[Dominator]

I'm sure this has been asked already, but in F1 is the min/max wheelbase allowed measured between the front and rear axles or from the guide post to the rear axle?

[JerseyJohn]

Wheelbase is always the distance measured between the centers of the front and rear axles.

[Dominator]

Is there a maximum overall length or is it measured by the body covering the guide and rear of the chassis and gear?

[JerseyJohn]

Every thing fits under the body with none of the chassis visible.

[Dominator]

Do all the F1 bodies fit under the 1-5/8" max width or are some skinnier than others?

[Cheater]

This is one of the few but, key, differences between the D3 ruleset and the IRRA ruleset.

IRRA calls for 1-5/8" max width on F1 chassis. D3 calls for 1-3/8".

(I think that's right, I'm so tired I could have it wrong...)

[Noose]

I'm sure this has been asked already, but in F1 is the min/max wheelbase allowed measured between the front and rear axles or from the guide post to the rear axle?

As noted by John, the wheelbase measurements is between the wheels.

[Noose]

Do all the F1 bodies fit under the 1-5/8" max width or are some skinnier than others?

There are some F1 bodies more narrow than others. When reviewing the approved body list, you will note some bodies have a description of narrow, wide, or nothing noted. The ones indicating narrow are those that would not fit "comfortably" over a max-width chassis. Those with no indication can fit all widths.

[Dominator]

Will the popular Cooper body fit on a 1-5/8" chassis? If not, what is another good option?

[Pablo]

Outisight Cooper F1 fits a 1-5/8 wide IRRA car perfectly.

[Noose]

Will the popular Cooper body fit on a 1-5/8" chassis? If not, what is another good option?

It fits quite well, as do the Red Fox F1s and the Lancer ones noted as wide.

[John Reimels]

Reviewing the various results and photos posted on this site, I've noticed that some folks add lead to the bottom of the chassis. Is this legal under IRRA rules? My reading of the rules says "no"...

John Reimels