New to Fly trucks and I must say I love these beasts! Have several and working on tuning them to my 60' SCX Track, longest straight is 15' with R2 and R3 curves. So far it seems they run best at 10-12 volts single mag. Tires take a lot to true and the slots on the MBs and Mans are taking spacers to help keep them in slot that and some lead weight up front. Not a whole lot of info to be found on tuning them. Just wanted to see what others had done to theirs to make them run any better. I ordered the NSR trued rubber wheel set to mess with along with a NSR King 21,400 rpm and plan a 27/9 gearing. Have a few other motors I may tinker with a Spirit SXXX and the Avant Slot Orange can both which seem like they have good braking. Excellent breaking and good acceleration are more important than top speed. So what motors, wheels tires gearing have you all used to tune these. Chassis has some chatter seems like it comes from the front. Maybe putting in bushings up front may help. Chassis seems to have a lot of flex. Anywho just looking for suggestions, tips from the experts! Thanks Gene
Thanks Ronan! Vey informative site, Definitely need to gear them down a bit. I was contiplating a similear mod he did to the chassis near the guide. Have the site saved. Everybody else feel free to pipe in! Thanks again Gene
Send me a PM with a real address. I don't have the link and I had to wade through 12 monthly editions from 2003 to 2009 to find it and I'm not doing it again
Not having a tire truer I gave up They also don't seem to want to absorb any treatment so I don't know what they are made of? I run no-mag at 10v . Laps and beer.
There are two or more different chassis. The solid and the "backbone" version so info maybe chassis specific I can't remember.
BTW The "Racer" Buggyra version uses 8/28
The tires are huge 26.5mm dia so when you do any rpm/gearing/speed calculations.....OOB at 12.5v the "Racer" is 24 kph same as Spirit 205 4x4 rally car. With some break-in might get 26kph which is the same as AS 207 4x4 which has a green motor.
In recent tests (not mine) Spirit xxx motor has marginally the best brakes so far....
Just remembered: Maybe I was unlucky but the rear end is a bit flimsy so you may wish to consider super gluing a thin piece of 4.5 x10mm plastic at the rear underneath the bushings on either side. I had one side crack/split. Maybe I was just unlucky. This has nothing to do with tuning per se.
Last edited by Abarth Mike; 10-29-2009 at 01:53 AM.
Thanks Ronan! Vey informative site, Definitely need to gear them down a bit. I was contiplating a similear mod he did to the chassis near the guide. Have the site saved. Everybody else feel free to pipe in! Thanks again Gene
No problem Gene! I find Rob's site very informative and I love the projects he works on. He sold some of his cars recently including a beautiful MB Slot Pagani he painted up in Coke Zero colours and I managed to buy it from him, a beauty!
I've been meaning to do the same mods to my Fly trucks (have all the relevant parts!) and one of these days I'll get around to it!
Thanks for the info Mike, I pm'ed you! Ronan I just got my NSR wheel set so will have to see how that goes. The MBSlot wheels keeps the rear as a dually. Want to get a set of those for comparison. I did put in a slot it rear axle 8t pinion 26t Spur for a 3.25 gear ratio. Acceleration is very good, braking is excellant reaches top end pretty quick. Putting a 9/27 with the NSR set so it will probably be a bit better. Rob has some very good info on his site I have now added it to my favorites. Hey maybe we can get a fly truck proxy race going! Keep it coming thanks Gene
Thanks for the info Mike, I pm'ed you! Ronan I just got my NSR wheel set so will have to see how that goes. The MBSlot wheels keeps the rear as a dually. Want to get a set of those for comparison. I did put in a slot it rear axle 8t pinion 26t Spur for a 3.25 gear ratio. Acceleration is very good, braking is excellant reaches top end pretty quick. Putting a 9/27 with the NSR set so it will probably be a bit better. Rob has some very good info on his site I have now added it to my favorites. Hey maybe we can get a fly truck proxy race going! Keep it coming thanks Gene
Wow! I think those NSR axle sets for the trucks look amazing! I'd say it will fly with them on! (Oops, bad pun!).
I love the idea of a truck proxy race, the only downside would be the size of the box required to ship them from event to event. It would be a good looking field though!
Thanks for the info Mike, I pm'ed you! Ronan I just got my NSR wheel set so will have to see how that goes. The MBSlot wheels keeps the rear as a dually. Want to get a set of those for comparison. did put in a slot it rear axle 8t pinion 26t Spur for a 3.25 gear ratio. Acceleration is very good, braking is excellant reaches top end pretty quick.Putting a 9/27 with the NSR set so it will probably be a bit better. Rob has some very good info on his site I have now added it to my favorites. Hey maybe we can get a fly truck proxy race going! Keep it coming thanks Gene
Gene,
I was testing again on the SpeedChecker and thinking (always dangerous). For trucks lower gearing like the Racer 8/28 maybe more suitable. Even 8/30. I know we all want to strive for the best lap times but real FIA Trucks are governed to 160 kph or 100 mph. So actually Fly trucks should be slower on the straight than rally cars. This would help the braking.
Gets real silly Maybe someone could adapt a smoke generator from an electric train to simulate the steam that comes off the brakes?
Man, I bought a set of the MBSlot truck wheels, and one of them had an inner diameter so large that the wheel wobbled horribly on the axle. Big disappointment.
One of the handling issues I had with the Mercedes trucks was up front in the axle holder. Giving the front axle a tiny bit of float helps. You can't give it much, because there isn't a ton of clearance up there.
Good info guys, Ronan been working on a draft for a possible Proxy. It would have to be limited to say 12-16 Trucks and maybe 6 tracks. If I can get enough interest maybe 2010 will see a truck Proxy El-Secundo sorry to hear about the MBSlots maybe it was just a bad batch or lack of QA but I will have to get my hands on a set to try them. Especially with a set of urethanes I have coming in. Those stock tires are such a pain to true without an actual truer. I have added a bit of float on my MAN and one of my MBs and it helps. Mike that generator idea sounds interesting! Thanks Gene
Good info guys, Ronan been working on a draft for a possible Proxy. It would have to be limited to say 12-16 Trucks and maybe 6 tracks. If I can get enough interest maybe 2010 will see a truck Proxy El-Secundo sorry to hear about the MBSlots maybe it was just a bad batch or lack of QA but I will have to get my hands on a set to try them. Especially with a set of urethanes I have coming in. Those stock tires are such a pain to true without an actual truer. I have added a bit of float on my MAN and one of my MBs and it helps. Mike that generator idea sounds interesting! Thanks Gene
I like the sound of this proposed proxy! You can certainly count me in for this event please!
Ronan sure will! Will have to make a seperate post and see how much interest there would be. Been working on my Buggyra, much better handling. Sits lower, suspension seems like it works to keep the back rear down. Looks like the Buggyra chassis should fit on the Man trucks as well. Just may need to remove some lines on the Man cab. Perhaps a bit of sanding on the front of the Buggyra chassis as well. This would give the Man Truck a better guide set up. Working on getting some Urethanes and a set of MBslot wheels now. Gene
Ronan sure will! Will have to make a seperate post and see how much interest there would be. Been working on my Buggyra, much better handling. Sits lower, suspension seems like it works to keep the back rear down. Looks like the Buggyra chassis should fit on the Man trucks as well. Just may need to remove some lines on the Man cab. Perhaps a bit of sanding on the front of the Buggyra chassis as well. This would give the Man Truck a better guide set up. Working on getting some Urethanes and a set of MBslot wheels now. Gene
It all sounds good! I'll keep an eye out for when you post a topic about this proposed proxy.
I do believe the Buggyra is the fastest but it would be good to have a varied field, so somehow the rules might be able to encourage this. Roll on 2010!
It all sounds good! I'll keep an eye out for when you post a topic about this proposed proxy.
I do believe the Buggyra is the fastest but it would be good to have a varied field, so somehow the rules might be able to encourage this. Roll on 2010!
A proxy for these trucks is a great idea. These things don't get the credit they deserve!
But there's no question that the Buggyra is the quickest, and no doubt that the Mercedes is the slowest. I think you'll find it's the Buggyra, SISU, Man, and Mercedes. So how do you even them up? Or would you run a separate class for each type?
Fly trucks and tuning, you know you have them!
They also don't seem to want to absorb any treatment so I don't know what they are made of? I run no-mag at 10v . Laps and beer.
Maybe I was unlucky but the rear end is a bit flimsy so you may wish to consider super gluing a thin piece of 4.5 x10mm plastic at the rear underneath the bushings on either side. I had one side crack/split. Maybe I was just unlucky. This has nothing to do with tuning per se.
Keep it coming thanks Gene
This would help the braking. 
El-Secundo sorry to hear about the MBSlots maybe it was just a bad batch or lack of QA but I will have to get my hands on a set to try them. Especially with a set of urethanes I have coming in. Those stock tires are such a pain to true without an actual truer. I have added a bit of float on my MAN and one of my MBs and it helps. Mike that generator idea sounds interesting! Thanks Gene
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