shadow_rusty Posted May 26, 2017 Report Share Posted May 26, 2017 I tend to run the stock rubber singles on the outside of the rim, and MJK's on the inside. Quote Stolen from SlotsNZ Team ABC Team Leader (Ambitious, But Crap) Home Track Threads - Shadow's Semi-Permanent Layout & Another Rug Racer & Proud of It & Gymkhana Test Track Car Collection Thread - My Car Collection Charts / Diagrams - MJK Tyre Selector / Slot.it 4wd Gearing / PoliCar Rollout / Rollout Chart Generator / SCX 4wd Rollout / Track Wiring with Brake on Track Call Link to comment Share on other sites More sharing options...
Lloyd Lucas Posted June 8, 2017 Report Share Posted June 8, 2017 So got the truck and chassis, need pinion and crown. Not sure on which to get.(first slot car modification) Have found slot it inline 9t pinion and 27t crown. is this the best option? would like it a little bit faster outta the corners. Smaller pinion or smaller crown? Quote Link to comment Share on other sites More sharing options...
Slo Posted June 8, 2017 Report Share Posted June 8, 2017 Not familiar with these beasts so not sure on optimum gear ratio. But, smaller pinion (less teeth), technically, will give it more punch and more brakes, alternatively, so would a larger crown (more teeth). Best to grab a few crowns and pinions and play around with different ratios. Quote Link to comment Share on other sites More sharing options...
difinity Posted June 8, 2017 Report Share Posted June 8, 2017 I find what makes 'faster out of the corners' for any chassis, is smoother acceleration rather than 'more punch'. For faster motors (say 22k +) I gear for brakes - 2.7-3:1 for slower motors with good torque, I gear 2.4-2.8:1 (say Jack Rabbit). It does depend on the track too. In 1:1 scale racing, a lot of drivers have said that if you are unsure what gear to use in a corner, change up and push harder...smooths the car out Quote Link to comment Share on other sites More sharing options...
kalbfellp Posted June 8, 2017 Report Share Posted June 8, 2017 I run my trucks around 170 to 180 grams with either the standard motor or NC5, geared 9/28 or 9/29. I also reduce the tyre diameter down to around 26mm. These things are so top heavy they needs lots of weight to handle. Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
shadow_rusty Posted June 9, 2017 Report Share Posted June 9, 2017 (edited) As pointed out by Phil, tyre diameter plays a major part in the gearing of these behemoths... A 28mm tyre has a circumference of 80mm, and a more 'normal' 20mm tyre is only a 60mm circumference. To put that in perspective, if both cars are running the 'standard' 3:1 gearing, the truck will move 30mm per motor revolution, whilst the standard car will only move 20mm. That's a whopping 30% difference... Now, as the trucks do run long can motors, they can pull quite 'high' gearing. On the more open tracks, and the ovals that we have tended to run the trucks on here, I generally run the 'old' 15k trucks at 9/27, and the 'newer' 18k trucks, run much better at 9/30, or 8/27, all of which are quite tall gearing, but that assists in reducing the torquey tail slide that occurs at shorter more 'correct' gearing. Edited June 10, 2017 by shadow_rusty Quote Stolen from SlotsNZ Team ABC Team Leader (Ambitious, But Crap) Home Track Threads - Shadow's Semi-Permanent Layout & Another Rug Racer & Proud of It & Gymkhana Test Track Car Collection Thread - My Car Collection Charts / Diagrams - MJK Tyre Selector / Slot.it 4wd Gearing / PoliCar Rollout / Rollout Chart Generator / SCX 4wd Rollout / Track Wiring with Brake on Track Call Link to comment Share on other sites More sharing options...
Lloyd Lucas Posted June 10, 2017 Report Share Posted June 10, 2017 Cool, thanks guys. Will get 8 and 9t pinion and 25, 27 and 30 crown. Quote Link to comment Share on other sites More sharing options...
Sports Racer Posted September 24, 2017 Report Share Posted September 24, 2017 I've bought a 2nd hand Mercedes off eBay and it has 11/27 gearing. Even with these tall gears it seems to have enough punch out of corners with it's standard Fly longcan. Has anyone else tried gearing like this? Quote May the downforce be with you. Link to comment Share on other sites More sharing options...
kalbfellp Posted September 24, 2017 Report Share Posted September 24, 2017 IMO the gearing needs to be changed unless it has very small tyres and no weight. The Merc is the hardest of the trucks to get to handle, we run them with a big slab under the chassis. Check out the Fly Truck Proxy pics over in SCI for all the info. Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
Sports Racer Posted December 21, 2017 Report Share Posted December 21, 2017 (edited) I finally got round to running the truck on the local commercial 8 laner and it goes well, even with it's crazy gearing and no weight added. Very easy to drive and quick through the sweeping corners with it's quad MJK's on the back. I'm surprised how deep it goes into corners before you have to brake. Laps bout 4/10 ths slower than a good Scaley GT, wouldn't win a GT race but it wouldn't come last. It loses about a truck length per lap against Shadow Rusty but I'm happy with that considering how much work he's put into his trucks. . Edited December 21, 2017 by Sports Racer Quote May the downforce be with you. Link to comment Share on other sites More sharing options...
Sports Racer Posted January 13, 2019 Report Share Posted January 13, 2019 (edited) I've now got 3 trucks. The Mercedes, a lightweight Buggyra and a Sisu which is 2/10ths faster than the other 2. It's faster than a lot of the cars in our Scalex GT class. Edited January 14, 2019 by Sports Racer Quote May the downforce be with you. Link to comment Share on other sites More sharing options...
GRUNZ Posted January 16, 2019 Report Share Posted January 16, 2019 hi, would you mind sharing some pics of your truck setups? interesting that the sisu is faster than a lightweight buggyra. Quote Cheers G "I am an expert at the top of my field when mowing the lawn". Link to comment Share on other sites More sharing options...
GAS41T Posted January 17, 2019 Report Share Posted January 17, 2019 (edited) Those guys in Canberra are backwards....hehe Edited January 17, 2019 by GAS41T Quote Link to comment Share on other sites More sharing options...
Sports Racer Posted January 17, 2019 Report Share Posted January 17, 2019 (edited) I'll take some pix but the Buggyra is setup for home tracks and the Sisu is quicker on the big 8 lane track at Way2fast in Canberra where we have a class for truck racing. The Buggyra sits so low I had to trim the bottom of the body so it doesn't scrape on the track. We used to have demolition caravan racing and I put a slot car under my caravan facing backwards and took the motor out of the tow car so the caravan towed the car but backwards to all the other racers. Lots of fun (and carnage). Edited January 17, 2019 by Sports Racer Quote May the downforce be with you. Link to comment Share on other sites More sharing options...
Caddo Posted January 18, 2019 Report Share Posted January 18, 2019 Those guys in Canberra are backwards....hehe Reckon proxy racers might give truck racers a run for their money in the backwards stakes.Multiple leaps of faith missing the adrenaline of side by side contests, will forever remain a mystery to me. Understand though if there are no local racing options. Each to their own I suppose.... Quote Link to comment Share on other sites More sharing options...
GRUNZ Posted January 18, 2019 Report Share Posted January 18, 2019 thanks. Looking forward to them. by the way, the new scalex truck are really great for what they cost. Out of the box they work absolutely fine (minus the stock motor)...even the original tyres are great after some trueing and a bit of oil. Will post a review of how I did set up mine. Quote Cheers G "I am an expert at the top of my field when mowing the lawn". Link to comment Share on other sites More sharing options...
Sports Racer Posted January 26, 2019 Report Share Posted January 26, 2019 (edited) Here's the Bug, it's the lightweight race version from Fly. It's low because of the small wheels and it needs very little lead, feels like a Scalex GT to drive on home tracks. The Sisu is bigger and has more weight up top so needs a lot of lead to keep it planted. It's 2/10 ths faster on the 8 lane commercial track at Way2fast and needs a different driving style - brake early and coast into the corner and keep the speed constant so it's quick out of the corner. I'm not happy with how easy it deslots on home tracks (tighter corners than the 8 lane track) so I'll move the lead in the middle to the front of the chassis to see if that helps. Edited January 26, 2019 by Sports Racer Quote May the downforce be with you. Link to comment Share on other sites More sharing options...
kalbfellp Posted January 26, 2019 Report Share Posted January 26, 2019 (edited) We use the Fly Truck Proxy rules for our truck class, so minimum Tyre diameter is 25mm and they still look small. Thst Buggy looks like it has Go Kart wheels! Edited January 26, 2019 by kalbfellp Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
Sports Racer Posted January 26, 2019 Report Share Posted January 26, 2019 21mm, Yellowdogs off a Carrera CanAm. That's how it can get away with weighing only 142 g compared to the Sisu at 213 g. Quote May the downforce be with you. Link to comment Share on other sites More sharing options...
Brumos RSR Posted January 26, 2019 Report Share Posted January 26, 2019 What's the wheel base on a fly truck? Quote Link to comment Share on other sites More sharing options...
Vinno Posted January 26, 2019 Report Share Posted January 26, 2019 Paul it sounds like you don’t have enough guide in the slot on the Sisu have you thought about trying a different guide before moving weight? Quote Link to comment Share on other sites More sharing options...
GRUNZ Posted January 26, 2019 Report Share Posted January 26, 2019 Nice. Thanks for the pics. Quote Cheers G "I am an expert at the top of my field when mowing the lawn". Link to comment Share on other sites More sharing options...
kalbfellp Posted January 26, 2019 Report Share Posted January 26, 2019 The go to guide used to be the Ninco Pro with the spring fitted, no longer available so maybe a Scale Auto? Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
kalbfellp Posted January 26, 2019 Report Share Posted January 26, 2019 The Early Buggy is the best truck by far,with 21mm wheels is should be unbeatable. I suppose the interior has been gutted as well,most things up there have to guts and we elected them! Quote Phil https://www.hobartminiaturecarclub.com/ Email Link to comment Share on other sites More sharing options...
Sports Racer Posted January 28, 2019 Report Share Posted January 28, 2019 (edited) The Sisu has the Ninco sprung guide, the Bug has a Slot.it wood guide. Interior of the Bug is standard but a lot of the plastic frame that holds the body to the chassis has been cut away to save weight. Unlike the Tassie truck drivers ours only come with 1 head so no need to lighten the interior. Edited January 28, 2019 by Sports Racer Quote May the downforce be with you. Link to comment Share on other sites More sharing options...
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