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3racing F109

Old 03-10-2012, 08:36 AM
  #1756  
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Do you use the 104 tear axle as well?
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Old 03-10-2012, 09:50 PM
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Originally Posted by scootr117 View Post
Do you use the 104 tear axle as well?
You can, but if you are using the f109 diff you don't have to. The f104 tires are narrower than the 103. That's where the difference in the rear width come from. If you change to an f104 pro diff then you will need the 110mm axle.
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Old 03-11-2012, 03:31 AM
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hi all.....have decided to get back into f1 for a bit of fun....got the f109 and love it so far.....just a quick question....what front kingpins are everyone using??? wanting to get a spare set but cant seem to find the right ones....

thanks

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Old 03-12-2012, 06:57 AM
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Originally Posted by texastc View Post
all you need is the F104 front end, F104 wheels/tires/bearings. And you will have to cut the servo mounts to fit the F104 lower arms mounts.


Thank you, However do you need the Entire fromt end, caster block, etc. Not sure if that is just the arms and you can use the hubs, axles, etc from the F109, or you need the whole shubang from the F104.

Next question, I am assuming this will being the car to 180mm. Once this is done I am assuming the F104 widening kit ti bring it to 190mm will also work. I know the front end for sure, since it is now a F104, but do the extended rear hubs fit as well?

Thanks for all the info.
Rob
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Old 03-12-2012, 08:25 AM
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Originally Posted by Robudda723 View Post
Thank you, However do you need the Entire fromt end, caster block, etc. Not sure if that is just the arms and you can use the hubs, axles, etc from the F109, or you need the whole shubang from the F104.

Next question, I am assuming this will being the car to 180mm. Once this is done I am assuming the F104 widening kit ti bring it to 190mm will also work. I know the front end for sure, since it is now a F104, but do the extended rear hubs fit as well?

Thanks for all the info.
Rob
you can use the 109 hubs, you will need F104 kingpins. because they are a bit longer. Caster block comes with the 104 arms.
For the widening kit to work, you will need the 104 pro diff along with the 110mm rear axle.
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Old 03-12-2012, 09:22 AM
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Thanks texastc, that is great info. We are trying to start up a F1 class this summer and hope it is successful enough to roll into Carpet next winter. We have about 7 racers ordering cars soon and a couple more that already have cars. Hoping after seeing them run others will want to play also.

My personal goal is to get acquainted with the car enough to run at IIC Vegas in October.

Rob
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Old 03-12-2012, 09:45 AM
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It's a good car. Not as popular in the States because of the 180 rules but I really like it. I'm piecing mine back together as a 200 car for after the Nats.
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Old 03-12-2012, 12:39 PM
  #1763  
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Originally Posted by scootr117 View Post
Do you use the 104 tear axle as well?
Yeah, but that wasn't really necessary. Also, as stated, you then need a shorter rear axle too.

Another bit that I've found to be less that perfect is the whole rear pivot arrangement. Wouldn't mind seeing a hop-up part to improve that. Same with the uprights between the bottom and top deck, very easy to strip threads there, especially as you're often screwing/unscrewing those to get access to the battery.
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Old 03-14-2012, 01:38 PM
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If all works out well, the F109 should be shipped tomorrow and be here next week. Next questions are. What 21.5 motors are the F1s liking. Was told the Revtech line would be a good motor for F1 but want to see what others are running.

Also we are running outdoor asphalt this summer, Medium size track 120 ft straight fairly open infield. We will be running Rubber tires. So few more questions if someone could recommend

1. Tires -looking for a combo of traction and longer lasting. I am willing to give up a little grip to not have to buy tires every other week.

2. Gearing.

3. Setup (Will be running the F104 front end and wheels, so believe that will make me 180mm wide, and will have the CRC side spring mod.

Thanks,
Rob
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Old 03-14-2012, 01:45 PM
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Originally Posted by Robudda723 View Post
If all works out well, the F109 should be shipped tomorrow and be here next week. Next questions are. What 21.5 motors are the F1s liking. Was told the Revtech line would be a good motor for F1 but want to see what others are running.

Also we are running outdoor asphalt this summer, Medium size track 120 ft straight fairly open infield. We will be running Rubber tires. So few more questions if someone could recommend

1. Tires -looking for a combo of traction and longer lasting. I am willing to give up a little grip to not have to buy tires every other week.

2. Gearing.

3. Setup (Will be running the F104 front end and wheels, so believe that will make me 180mm wide, and will have the CRC side spring mod.

Thanks,
Rob
thunder power or reedy as they smooth to drive
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Old 03-14-2012, 01:50 PM
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I recently bought a F109, and I like the car very much!!Its pretty fast. And great out of the box.
But now I want to replace the kits diff with the Tamiya F104 aluminum diff housing set #54158. So I was wondering anyone tried it??

Thanx
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Old 03-14-2012, 04:31 PM
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Finally got to drive the F109 at the track. Well impressed with its performance so far; fairly easy to drive. Stiff rear end worked as expected, we managed to finalise the roll-out with the Tamiya F1-tuned brushed motor at just short of 70mm.
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Old 03-14-2012, 04:58 PM
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Originally Posted by JD Skyline View Post
I recently bought a F109, and I like the car very much!!Its pretty fast. And great out of the box.
But now I want to replace the kits diff with the Tamiya F104 aluminum diff housing set #54158. So I was wondering anyone tried it??

Thanx
I have the F104 aluminum diff on my Exotek F1R which was originally my F109. The only difference really is that the 104 diff you don't have to take aprat the diff to take off the tire. BUT you have to take off the tire to adjust the diff. So either way you go, there you are. F109 diff is actually pretty nice.
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Old 03-14-2012, 05:05 PM
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Originally Posted by JD Skyline View Post
I recently bought a F109, and I like the car very much!!Its pretty fast. And great out of the box.
But now I want to replace the kits diff with the Tamiya F104 aluminum diff housing set #54158. So I was wondering anyone tried it??

Thanx
Compared to the F109 diff I found the F109 diff smoother. The advantage of the F104 diff is that you can change wheels without dismantling the diff so you never lose your diff setting. The disadvantage of the F104 diff is that adjusting the diff or replacing spur gears is a pain compared to the F109 diff, to adjust the diff setting means taking the wheel off and removing the diff cap to get access to the nut, unlike the F109 where if you put it on the track and the diff is slipping or too tight you can adjust it in seconds.
As I adjust the diff setting or change the spur gear more often than I change wheels, I found no advantage at all with the F104 diff and went back to the F109 diff.
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Old 03-14-2012, 06:18 PM
  #1770  
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I have the F104 diff on my F109. Works great. Once you set it, you really don't have to mess with it again for a while.
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