aquakiwi Posted June 12, 2017 Report Share Posted June 12, 2017 (edited) I have a couple of orange end bell motors which otherwise look identical to the Piranah, on the tacho at 12v, they are 23.3 and 23.180. Are they the same as the Piranah or older Slot-It motors. Both spare Piranah motors I have are 23k, one of which has a black and the other a white, endbells. Still trying to decide between 20k Shark (20.150) or one of the afore mentioned motors for the Grp 5 Proxy. Edited June 12, 2017 by aquakiwi Quote Link to comment Share on other sites More sharing options...
GAS41T Posted June 12, 2017 Report Share Posted June 12, 2017 So that means the piranha motor isn't suited For the group 5 B class then Quote Link to comment Share on other sites More sharing options...
aquakiwi Posted June 13, 2017 Author Report Share Posted June 13, 2017 (edited) So that means the piranha motor isn't suited For the group 5 B class then By the rpm, no. I think the rules refer to manufacturers specs. In my experience in Slots and RC car racing, motors vary quite significantly. Edited June 13, 2017 by aquakiwi Quote Link to comment Share on other sites More sharing options...
shadow_rusty Posted June 13, 2017 Report Share Posted June 13, 2017 (edited) 'Late' model 'square edged' orange can motors have been re-classified by slot.it to be a 23k motor. 'Early' model 'rounded edged' orange can motors are the original 21.5k motor. I believe that the new 'black' endbell motor is rated at 21k, and is the 'spiritual' replacement for the 21.5k motor, and is found in the Slot.it Alfa / Calibra. Edited June 13, 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...
Wobble Posted June 13, 2017 Report Share Posted June 13, 2017 I'm going with a 20k Shark this time around because I think they have more punch and better brakes than an orange end bell, and although I don't have a tacho to measure rpm I go by sound and the Shark is definitely not as quick as an orange endbell. The rear wheels on my Capri are significantly larger than my P68 and Mk4 so effectively it is geared up a lot to those 2, and at 35:12 gearing it is still accelerating at button off point on Wazzas back straight which would be one of the longest straights the cars run on in the proxy. I'm going to try 36:12 gears next and see how it pans out. Quote Link to comment Share on other sites More sharing options...
aquakiwi Posted June 13, 2017 Author Report Share Posted June 13, 2017 (edited) Yep thats what the tacho tells me Bram both the orange endbell and Piranahs are 1.5 to 2.5 k faster, respectively, than the Shark. I'm leaning towards the Shark. Edited June 13, 2017 by aquakiwi Quote Link to comment Share on other sites More sharing options...
shadow_rusty Posted June 13, 2017 Report Share Posted June 13, 2017 (edited) Hmmm, this is interesting... Assuming 100% efficiency, and exact RPM ratings... NSR 20k with 9/27 gearing has the axle spinning at ~6666rpm. To Gear a 23k slot.it to a similar axle speed (6571), it would need 8/28 gearing. The question is then, would the NSR and the SLot.it motors then feel more 'similar' to drive? Alternatively, if you gear the NSR 20k at 10/26 (7692), which is similar axle speed as the slot.it 23k at 9/27 (7666rpm), would it then be lacking brakes? Slot.It V12/3 "orange endbell" later version, square corner case (FC-130) Rated - 23,000 RPM/12v, 170 gcm/12v, 9.8W/12v Tested - 23,535 RPM/12v, 167 gcm/12v, 9.8W/12v NSR Shark (FC-130) Rated - 20,000 RPM/12v, 164 gcm/12v, 8.2W/12v Tested - 20,204 RPM/12v, 203 gcm/12v, 10.3W/12v Edited June 13, 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...
aquakiwi Posted June 13, 2017 Author Report Share Posted June 13, 2017 SR not familiar or sure what you mean by square corner case. Quote Link to comment Share on other sites More sharing options...
shadow_rusty Posted June 13, 2017 Report Share Posted June 13, 2017 (edited) Square Shouldered Can Round Shouldered Can Edited June 13, 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...
Wobble Posted June 14, 2017 Report Share Posted June 14, 2017 Yep thats what the tacho tells me Bram both the orange endbell and Piranahs are 1.5 to 2.5 k faster, respectively, than the Shark. I'm leaning towards the Shark. Alan, I had a run on Wazzas track tonight with my Capri with a 20k Shark and 11:34 gearing and that even felt too tall as the braking wasn't as good as I expected and it didn't 'peak' before the end of the straight. Maybe my car is too heavy at 86gm and/or the wheels are too big to get the best braking out of the motor in it. Quote Link to comment Share on other sites More sharing options...
Wobble Posted June 14, 2017 Report Share Posted June 14, 2017 Yep thats what the tacho tells me Bram both the orange endbell and Piranahs are 1.5 to 2.5 k faster, respectively, than the Shark. I'm leaning towards the Shark. Alan, I had a run on Wazzas track tonight with my Capri with a 20k Shark and 11:34 gearing and that even felt too tall as the braking wasn't as good as I expected and it didn't 'peak' before the end of the straight. Maybe my car is too heavy at 86gm and/or the wheels are too big to get the best braking out of the motor in it. It turns out this motor is pulling around 22k so I'm thinking it may have weaker magnets which would explain the lack of braking effort too. I'm going to swap it out for the one in my Mk4 which doesn't pull as many revs but is a quick car with good brakes. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.